Method for protecting optical disk from recording, for recording and/or playback device for optical disk (variants)

FIELD: optical data carriers.

SUBSTANCE: for protecting optical disk from recording, information concerning protection from recording is read, which is previously recorded in at least one zone of starting or ending area of data carrier, and it is determined, whether the latter is in state of recording protection. In variant, when carrier is placed in cassette body, and body has aperture for forbidding recording protection of data on disk, it is determined, if recording protection state of recording protection data written on disk is matches with state of recording protection of said aperture, and recording of new data is prevented, if said protection data and aperture position forbid recording. In a variant information concerning recording protection is stored in zones of disk identification of at least one of zones of starting and ending area of carrier.

EFFECT: higher efficiency.

5 cl, 16 dwg

 

The technical field to which the invention relates.

The present invention relates to optical recording and/or playback for recording digital data on disk and/or reproducing information, and more specifically the way the write-protect to protect the recorded user data on the media, write-once or rewrite from unwanted blending recording or erasing, and recording media for storing information of write protection.

The level of technology

Standard recordable digital versatile discs (DVD-R, SCUD) and standard single write once, read many (WORM OSMS) are standards for disk write-once, and standard digital versatile disk random access (DVD-RAM, CUPD) and standard rewritable digital versatile disk (DVD-RW, PSCAD) are standards for rewritable disc.

In accordance with the standard CUPD, published in July 1997, entitled “Specifications of the MCC for rewritable disc, part 1 : Physical specifications version 1.0”, CUPD contains a cartridge containing a disk, and the disks from the cassette type 2 and type 3 can be used after removal of the cassette in the form of a planar disk.

For disk CUPD identified the following three types of cassettes. In the cartridge 1 is installed one-way drive or Duhs Ronni disk and mounted the disk cannot be removed from the chassis. In the cassette type 2 establish a one-way drive, and installed the disk can be removed from the chassis. However, when the disk is removed from the body once the hole sensing element capable of sensing the removal of the disk is constantly changing in an open state so that the aperture of the sensing element cannot be again changed to the closed state. Thus, it is possible to determine withdrawn if the drive from the chassis or not. In the cassette type 3 hole sensor is also able to determine out whether the drive from the case, or not, is opened at an early stage, so the disk can be removed from the enclosure and install it without restrictions.

In addition, the cartridge has a hole barring entry (alternatively called “recognition switch for write protection”) and in accordance with the standard (p.69) recording is possible when the hole of the ban account closed, and impossible when the hole prohibition write openly. That is, when the user intends to protect recorded data from unwanted blending write or erase, the corresponding hole of the ban accounts that are in the closed state, it changes to an open state, so that the recording device cannot record on the disc is suitable the cassette.

However, in the case using a cassette type 2 or type 3 open-frame drive can be used without a housing, as described above. This is because the disk can be used in thin-recorder-playback, for example in a compact portable computer, in which you cannot install the cartridge. However, the above specification does not specify any means of protection against the entry in addition to holes ban the account that is attached to the housing of the cassette.

For example, when the user after removing disk that is installed in the housing, which protects write-sets in a thin disk recorder-playing, in which you cannot install the cartridge write protection through holes ban the account is no longer valid.

In addition, there are many specifications associated with the MCC, such as the specification of the MCC for permanent storage device (specification DVD-ROM, a ROM for the MCC), specification STUD (specification of the MCC for recordable disc). In addition, you can consider many specifications for rewritable MCC, which is not yet determined, for example, specification of the MCC for recordable and readable disc, which is very similar specs STUD and specifications of the MCC for the drive with increased density. This series of specifications console MCC is called the “family of the UD”.

Working from the computer system also includes various attributes, such as read-only and write protection, which can prevent arbitrary changes recorded data using the attributes of the file in which the recorded data. However, when the drive control is carried out on a lower level than the file system management file, for example when directly perform recording and playback is not through the file system, when you initialize the disk where there is no link to the entire file system, or when the attributes of each file can not be taken into account, this method is not a reliable method of protection. Therefore, the data protection method without CUPD from unwanted blending write or erase is not yet widely spread.

If CUPD disk can be used in open condition, as well as in the housing. However, in the case STUD or PSCAD you cannot use the drive in the enclosure, so that the need to protect open-frame drive from unwanted blending recording or erasing is increased. However, when using removed from the housing without the disc you can't use the hole prohibition write, so write protection must be provided at the disk.

In the specification STUD, specifications 3.95GB (Version 1.0) and is Specificatii 4.7GB (final plan, version 1.9) does not mention the method of write protection for open-frame drive. Meanwhile, specifications PSCAD prepared on the basis of specifications STUD, and in particular version 1.9 defines the use of open-frame drive without the enclosure. However, if additional specification defines the use of the drive in the enclosure (for example, the continued application), there will not be applicable method of protection from record to open the disk, because this is the usual method of write protection, which applies to CUPD using holes ban record.

If the specification PSCAD allows you to use the case, then the recording can be prevented by using a hole that write access is denied, as in CUPD. However, if the user forgot to translate the opening status of the prohibition of the write inhibit position record, it can happen unexpected Erasure or overlay data record.

The invention

The present invention is to provide a method of write protection device for recording and/or playback, able to protect the content recorded on a recordable and/or rewritable media, from unwanted blending write or erase.

For solving the problem of the present invention, a method of write protection device for recording and/or reproducing an optical disc, the data recorded on a recordable and/or reproducible recording medium, which includes the initial region, the end region and a user data area, protect from unwanted blending recording or erasing, namely, that (a) verify the information write-protect stored on the recording medium, and (b) prohibit the recording data on the recording medium in accordance with the information of write protection.

For solving the problem of the present invention a method of write protection for recording and/or reproducing device of an optical disk that records and/or reproduces data on the recording medium or the recording media placed(CSOs) in the case of the cassette, the recording medium includes a user data area for storing data and information of write protection, suggests that prevented the recording of new data on the recording medium, and the case has a hole barring entry for write protection, namely, that

determine, consistent whether the status of the write protection information of the write-protect status of the write protection hole prohibition of entry, and

prevent the entry of new data on the recording medium, if the information of write protection or hole prohibition entries indicate the status of the write protection to prevent entry n is o data on the recording media.

For solving the problem of the present invention a method of write protection for recording and/or reproducing device of an optical disk that records and/or reproduces data on the recording medium or the recording media placed(CSOs) in the case of the cassette, the recording medium includes a user data area for storing data and information of write protection, suggests that prevented the recording of new data on the recording medium, and the case has a hole barring entry for write protection, namely, that

determine if the user enters new information of write protection in the recording and/or reproducing device of an optical disk,

determine whether new information of write protection in the state of write protection,

set the security information from the recording on the recording medium in a state of write protection of new information write protection, if the new information of write protection is set to write protect,

determine whether new information of write protection in the state of liberation write protection, if the new information of write protection is not set to write protect,

determine whether the security information from the information saved on the recording media, with the a being the hard write protection, indicates that the status of the write protection cannot be recovered in a rewritable state, if the security information from the information saved on the recording medium, installed in the hard write protection, and

change the security information from the information saved on the recording media in a rewritable state, if write protection is not set to hard write protection, and inform the user that the status of the write protection information of write protection cannot be released, if write protection is set to hard write protection.

For solving the problem of the present invention a method of write protection for recording and/or reproducing device of an optical disk in which data is recorded on a recordable or reproducible recording medium, which includes the initial region, the end region and a user data area, protect from unwanted blending recording or erasing based backup saved data write protection, namely, that

read at least two back-up saved data write protection with recordable and/or reproducible recording media and

determine whether a recordable and/or play the produced recording medium in the state of write protection or not in the state of write protection on the basis of consistent if at least two back-up saved data write protection.

For solving the problem of the present invention a method of write protection for recording and/or reproducing device of an optical disk in which data is recorded on a recordable or reproducible recording medium, which includes the initial region, the end region and a user data area, protect from unwanted blending recording or erasing based backup saved data write protection, namely, that

read at least two back-up saved data write protection with recordable and/or reproducible recording media and

determine whether a recordable and/or reproducible recording medium is not in a state of write protection on the basis of whether errors at least two back-up saved data write protection.

Brief description of drawings

The above objectives and advantages of the present invention will become more clear from the detailed description of a preferred its embodiments with reference to the accompanying drawings, on which:

figure 1 represents an image in perspective of a cassette for a digital versatile disk is random access (CUPD), having an aperture ban accounts;

figure 2 illustrates the structure of a conventional CUPD;

figa and 3B illustrates the structure of the data management defects (OAD) normal CUPD;

figa and 4B illustrate examples of data structures OAD CUPD to memorize information write protection in accordance with the present invention;

figa and 5B illustrate additional examples of data structures OAD CUPD to memorize information write protection in accordance with the present invention;

6 is a block diagram illustrating the corresponding preferred variant implementation of the present invention a method of write protection;

7 is a block diagram illustrating relevant to the present invention a method of correcting information of write protection;

Fig illustrates the structure of the ID disc for storing information of write protection in accordance with the present invention;

Fig.9 illustrates the data structure information of write protection, stored as shown in Fig zone identification disk.

figure 10 illustrates the structure of a drive that meets the General specifications STUD and PSCAD;

11 illustrates the structure shown in figure 10 initial region;

Fig illustrates the structure shown in 11 areas of governors Dan is s;

Fig illustrates the contents of the data field of the control record (DUHS) management record (GPN) in accordance with the specifications STUD and PSCAD;

Fig illustrates the content shown on Fig normal 0 field DUZ;

Fig illustrates contents 0 field DUZ to memorize information write protection in accordance with the present invention, and

Fig is a block diagram illustrating corresponding to another variant implementation of the present invention a method of write protection.

Description of the preferred embodiments of the invention

Figure 1 shows the opening of the prohibition of tape corresponding specifications CUPD, note that the reference position 1 shows the opening of the prohibition of entry, and the reference position 2 shows the hole sensing element used to determine out whether the drive from the case.

Figure 1 is a closed hole 1 prohibit entry indicates that the entry is allowed and the open hole 1 prohibit entry indicates that the entry is forbidden. Thus, when you open the hole 1 of the prohibition of entry in the respective device record-playback CUPD, writing data to disk is prohibited, even if the outer side, you enter the write command, so that the information recorded on the disk can be protected from unwanted cash the taxpayer of record.

Figure 2 shows the structure of the disk corresponding to the specification CUPD. The disc consists of three parts, i.e. the initial area, a user data area and the destination area in the aspect of function. In addition, the disk can be divided into a rewritable area and a write once area. In particular, the initial area contains the area to read-only in the innermost part, which represents the area of a write once relief data, containing indentations, and an area of a rewritable data zone after only reading, in which you can perform and record, and playback. Meanwhile, the destination area and the data area contains only an area of a rewritable data. Area to read-only initial field contains information about the physical characteristics of the disk. Area of a rewritable data start field and end field contains four management defects OD, OD, OD and OD, which contains the information about the defects of the disk, the test area of the disk for use by the manufacturer of the disk when checking the disc status, zone test drive for testing operations of the recording and reproduction device of the recording-playback, the protective zone of the track and the area identification disk.

In the version 1.0 specification CUPD purpose of the use zones identified the paths of the drive and its contents have not yet been precisely described.

On figa and 3B shows the structure of a data management defects (OAD), in particular, as described on pages 155-158 specifications CUPD, and especially they show the structure of the characteristic data certification data and sign the certification group, respectively, in the field of structure determination disc (SOD).

All four management defects OD, OD, OD and OD are in the initial region and the end region, and OD and OD are in the initial region, and OD and OD are in the target area, and each area is stored the same information concerning defects of the disk and the disk is initialized. Record this identical information in different areas, i.e. in two areas OUT and OUT primary area and two areas OUT and OUT end region, carried out to prevent the problem of unavailability of data for use due to defects of the disk.

As shown in figa, 3-th byte position, i.e. BP structure definition disc (SOD), there is a sign certification of the disk, and sign the certification of the disk contains the information “in the process”that shows the status of the disk initialization, the sign “certification”user indicating whether the disk by the user, and sign the “certification of the manufacturer of the disk, showing whether the corresponding disk drive manufacturer and the feature information, recorded in byte position BP is information about the entire disk.

In addition, in the byte positions 16-39, i.e. BP-BP, each byte has mark certification group, as shown in figv, in an identical configuration. Byte position BP-BP have information initialization, approximately 24 recordable areas, which is a group defined in the version 1.0 specification CUPD. That is, each sign of the group certification has information “in the process, showing the initialization status of the corresponding group, and sign the “certification”user indicating whether the user disk. Here the group indicates a special recordable area of the disk.

On figa and 4B show examples of data structures characteristic of certification drive and sign the certification group area structure definition disc (SOD) management defects (OAD), in which the recorded information of write protection in accordance with the present invention. In the data structure shown in figa sign certification of disk information “write-protect the disk stored in binary bits b4 and b3 of the reserve sign certification of disk “Backup”, in contrast to the data structure shown in figa sign the certification of the disk, and is defined as follows.

Write-protecting a disk
b4, b3=00bThe disk is not write-protected
10bThe disk is write-protected.
 The recording will not be performed on an entire disk, except for the field testing of the drive and area OAD.
11bThe disk is write-protected.
 Will not be recorded on the entire disk.
 These binary bits will not be changed to other values.
OtherBack.

In the same way shown in figv data structure characteristic certification group stores information “write protection group” in binary bits b4 and b3 of the reserve sign certification group “Backup”, in contrast to the data structure characteristic of the group certification shown on figv, and is defined as follows.

Write-protecting group
b4, b3=00bThe group is not write-protected
10bGroup write-protected. This unit will not store user data.
OtherBack.

Table 1 shows the Oceania binary bits b4 and b3 of the sign certification drive and status bits b4 and b3 of the sign certification group.

Table 1
Sign the certification driveSign certification groupState
b4b3b4b3 
0000There is no write protection
0010This group is write protected
10IndifferentAll flexible disk write protection
11stateAll hard disk write protection

Table 1 flexible write protection means that the write protection can be released (unlocked), i.e. the state of write protection can be changed on a rewritable state by setting the appropriate bit b4 to “0”. Hard write protection also means that the write protection is applied to the target area, as well as to the starting area, so that the state protect the s from the recording cannot be recovered in a rewritable state.

When the hard write protection for groups that make part of the hard disk is write-protected, does not provide benefits for the user in use, and not in the technical aspect, and in particular there is a problem processing in the corresponding group, when re-initiate the entire disk. Thus, it is impractical to install the hard write protection for the group.

As shown in the data structure on figa and 4B, information write-protect the disk is recorded in the structure definition disc (SOD) management defects (OAD), and identical information write protection recorded four times on the same disk, so the disk increases the reliability of the information of write protection.

When the planar disk is write-protected, insert for use in a shell hole barring entry which is in a rewritable state, or if the unpackaged drive is not write protected, is inserted into the housing hole of a ban record of which is in the state of write protection, stored on the disk information of the prohibition of entry may not be consistent with the state openings of the prohibition of recording the chassis.

In this case, if either the disk or case write-protected prefer this function so that it is relevant for the state of write protection. This is because in point is the situation of the user prefer, to the content data, and in this case was tested without imposing record, instead of important data corrupted due to imposing record.

On figa and 5B presents additional examples of data structures characteristic of certification drive and sign the certification group, respectively, the field structure definition disc (SOD) management defects (OAD), which stores information of write protection in accordance with the present invention.

In the case when the information of write protection is shown in figa sign the certification drive, you can use only one binary bit b4, regardless, is whether the write protection for the hard write protection or for flexible write protection, which is defined as follows.

Write-protecting a disk
b4=0bThe disk is not write protected
1bYou cannot write to the entire disk, except for the field testing of the drive and area OAD.

Shown in figv sign test group can store the information of write protection, using only one binary bit b4, which is defined as follows.

Write-protecting group
b4=0bThe group does not write protected
1bThe group is protected from recording. This unit will not store user data.

In this case, it is preferable to use binary bit b4 sign the certification of the disk and the binary bit b4 sign the certification group. However, instead of using the bit b4 of the sign certification drive or sign the certification of a group, you can use any “Backup” binary digit.

In addition, you can use binary bit b4 characteristic certification group, that is a sign of “write protect group”. This effectively in the disk, in which only a specific group is not write protected, and in this case, the binary bit b4 sign the certification of the group is “Backup”, as in the usual specifications.

The present invention can be applied to the body without holes ban the account, and information on the disc can effectively protect in this case, using saved on the disk write protection.

Figure 6 presents a flowchart illustrating a method of protection against the entry corresponding to the preferred variant implementation of the present invention. First check to see if the drive in the enclosure (step S101), and if the drive installed is the case, then check the state of the holes of the prohibition of recording the chassis (step S102). That is, when the aperture is ban the account is closed, it means that the cartridge is not write protected. When opening a ban of the account is open, it means that the cartridge is write-protected.

If at step S101 determines that the drive in the enclosure is not installed, or after the inspection step S102 status holes ban record check (step S103) sign write-protect the disk. That is, check the signs of write protection in the indication of the certification drive and sign the certification group.

At step S104 determines is consistent whether the write protection status holes prohibition of tape. That is, when the information of write protection recorded on the disc and the hole of the prohibition of recording the chassis is open, determine whether the sign of the write protection feature of the certification of the drive state to “write-protect” (step S105). Otherwise, the user is informed that the information write-protect the disk is not consistent with the state openings of the prohibition of recording the chassis (step S106).

If the characteristic of the write protection feature of the certification of the disk is set at step S105 in the state of write protection, or if either the drive or the enclosure indicates the status of the write protection, even if both the state of the write protect disk and housing soglasuyas is on stage S106, perform the inspection (step S107), set the drive state to “hard write protection”. If the drive is set to “hard write protection”prohibit (step S108) recording data on the entire disk, including the initial area and the destination area. Otherwise, prohibit (step S109) recording data in the data area of the user, and not in the field test drive and management defects (OAD).

If at step S105 determines that the sign of the write-protect indication certification no drive is set to “write protect”, then check to see if the sign of the write protection characteristic the group certification status to “write-protect” (step S110). If the sign of the certification group is set to “write protect”, then the write data in the corresponding group is prohibited (step S111). Otherwise, allow the entry of data in a rewritable area (step S112 ().

Shown in Fig.6 way to protect against the entry corresponds to the case of using sign the certification of the drive that contains the sign of the hard write protection, shown in figa, and sign the certification group, shown in figv. When use is shown in figa sign the certification of the disk and displayed on FIGU sign certification group, shown in Fig.6 steps S107 and S108 are not doing. When at step S105, the prize is AK certification drive is set to “write protect”, recording data in the data area of the user at step S109 prohibit.

7 is a flowchart illustrating a method of installing a rewritable disc in the state of write protection or change the status of the write protect disk rewritable state. Will now be described by way of correction information of write protection, citing shown in Fig.7. block diagram.

As shown in Fig.7, when the disk or cassette in the recorder-playback checks (step S201) information of write protection. Then determine (step S202), whether the user information of write protection, and after the introduction of user information write protection determined (step S203), whether the user had selected information for write protection. If the user information is information of write protection, then the corresponding characteristic of the write-protect a disk set in the state of write protection (step S204).

If the information set by the user at step S203 is not the information of write protection, then determine (step S205), is the information set by the user, information release write protection. If the user information is information release write protection, then determine (step S206), is whether the current my disk in the hard write protection. If the current drive is the hard write protection, then the user is informed (step S207) that the write protection cannot be released. If at step S206 determines that the drive is not in the state of the hard write protection, then the corresponding characteristic of the write-protect a disk set in the state of overwriting (step S208).

In addition, when the installation is complete write protection or release the write protection of the disc, i.e. at the completion of the steps S204, S207 or S208, and install the drive in the enclosure is determined at the step S209, how does opening status of the prohibition of recording the chassis with the security information from records stored on disk. If the status holes ban account housing is not consistent with the condition of the disc, the user is informed about this difference (step S210) and then complete the procedure.

Shown in Fig.7. a method of correcting information of write protection can be accomplished by the insertion of planar disc or a disc is inserted into the housing and can be performed after the write-protect using the information of write protection, as described with reference to Fig.6.

In a preferred embodiment of the present invention the security information from the disc record management defects of the disk. However, instead of managing defects of a disk, you can use the AMB is shown in figure 2 the area identify the drive. Area identify the drive there in the start field and end field, like the field of management of defects of the disk. Thus, the record is identical to the information two or more times in the areas of identification of the disk, located in the primary area and the destination area can be guaranteed to the same extent as in the management of defects of the disk.

Because the area identify the drive is not currently used for a particular purpose, advantage is that the area identify the drive does not contradict the information recorded in the management area, the defect of the disk. In particular, information information about defects applies only CUPD, so it is difficult to maintain compatibility between discs for optical record-playback. Meanwhile, since the area identify the drive is not limited to a special disk, an ID of the disk can be maintained consistent with another disk that meets the same specifications.

Example remembering information write protection using the ID of the disk will be described with reference to Fig and 9.

As shown in Fig, in the structure of the ID of the disk that stores information of write protection for open-frame drive, in the area of identification of the disk simultaneously recorded four characteristic for C the shields from the write and read two or more common characteristic of the four signs. If the content of the signs read consistent with each other, it is considered that the write-protected disk is installed.

For example, four characteristics write only in the area of identification of initial disk region and the identification information of the disk size of 1 block is 1 byte), write down four times in four blocks from the beginning of the ID disc initial field, the first byte of the identification information of the disk contain the characteristic of the write protection. Identification information of the disk 1, a block size, summarize, as shown in table 2.

Table 2
BPContentThe number of bytes
0Information write-protect1 byte
1-32767Backup32767 bytes

Sign write protection (33) information identifying the disk corresponds to the oldest binary digit (SDR) of the first byte, as shown in Fig.9. When the characteristic value (indicated by “ZZ”) is 1b (binary), this means that the entire area of the disk is write-protected, except for the ID of the disk and zone test drive. In addition, when the characteristic value is 0b, this means, Thu the whole area of the disc is rewritable. That is, the “ZZ” in Fig.9 is defined as follows.

33=1bThe entire area of the disk is write-protected, with the exception of the test drive and the ID of the disk.
=0bThe entire area of the disk is not forbidden to write.

The reason for reading only two of the usual signs of the four recorded signs of write protection is as follows. In that case, if recorded only one characteristic of the write-protect error can be created in the area in which is recorded the corresponding characteristic, so that the area cannot be used. Also, if you can only read, not write, there is a risk of faulty operation, so that the information may not be recorded permanently on the disk due to an erroneous reading of the respective attribute.

Meanwhile, when recording information of write protection in a large number of locations, the problem is that it increases the time required to read the relevant information. That is, can increase the time required for a number of processes, ranging from the insertion of the disk, including the reading of a variety of information from the disk and recognition of information required to control the drive microcontroller.

However, in the case of correction in the information write protection operation is performed only adjustment. That is, due to the fact that information is not read, the recording time in units of several hundred milliseconds can hardly be taken into account. Thus, the record in four locations perform because of the reliability of information and take into account the possibility of correcting errors during reading. That is, unless you create two errors, or read usually adjusted signs, and two of them coincide with each other, the state of write protect disk set without reading the other signs, thereby increasing the operation speed.

The above proposed method of write protection is not limited CUPD, and it can be applied to the disk, with technical data, physically the same as disk SCUD-PSCAD, and similar specifications of the MCC, which will now be described.

Figure 10 shows the structure of a disk corresponding to the common specifications drive STUD and PSCAD. Drive roughly divided into two parts in respect to functionality, including the area information record (C) and area information. Area C-the information is divided into a calibration power (ACM) to calibrate the power and sphere of control entry (GPN), showing General information concerning the account, i.e. information about the recording mode of the disc, recording status, control optimal modestie area of the frame, and information area is divided into the initial region of the write data, in which the user can write data, and the destination area, which is not yet defined in the specifications STUD and PSCAD.

As shown in figure 11, the initial area contains the starting area (content: 00h), for which a specific purpose is not defined, the zone reference code (binary channel code 3T-6T-7T), used to control the correlator RF signal to drive the first and second buffer zones (content: 00h) and the area management data, including the content shown on Fig.

On Fig information about the physical format area management data represents information about the types and versions of the specifications, the disk size and maximum transfer rate, structure, dick (unilateral/bilateral), areal density and distribution of the data area, and information about the manufacturer of the disk is not associated with compatibility.

On Fig shows the contents of the data field of the control record (DUHS) management account (OAS), the corresponding specifications STUD and PSCAD. Znz contains the initial area of the OAS, including system backup field (content: 00h) and the unique identification and field DUHS. As shown in Fig one field SCHOOL consists of 16 sectors in which the first sector assigns the I as the field of communication loss basic information disc is memorized in the 0 field STATION, information associated with the management optimal power (MSD), is stored in 1 box DOUZ, special user data (content: 00h) memorized in the 2 field STATION, and information about the zone border is memorized in the 3 field of DOUZ. In addition, in the case of disk STUD corresponding to the specifications of version 1.9, whenever you record to 4-12 fields of DOUZ, memorized information C-zone (zone records), including the elements of the record, and 13-14 field DUZ reserved.

In the case of a rewritable or erasable disk PSCAD, the specification of which is yet to be determined, information C-zone is stored in 4 field STATION, and 5 field DOUZ and 12 field DUZ assigned for storing information related to the management and certification of defects, taking into account the used reliability certification before using the drive and control defects. 13 field of DOUZ and 14 field DUZ also reserved.

On Fig shows the contents of the usual disk, stored in the 0 field DUZ Fig. On Fig byte position BPO and BP store information about the format of DOUZ (recorded only 0001h), byte position BP stores information about the status of the disk, and the byte position BP reserved. Byte position BP-BP store information about the unique identifier of the disk, which stores the date and time to be written and the data in the form of ASCII code (American standard code for information interchange). In the byte positions BP-BP copied information pre-grooves, and the remaining byte positions BP-BP reserved. Here on disk STUD information about the state of the disk, stored in byte position BP, is defined as follows.

(BP)The disk status.
00bIndicates that the drive is empty.
01bIndicates that the disk is in the mode of simultaneous recording.
02bIndicates that the disk is in incremental mode entry.
03bIndicates that the disk is completed, when using incremental entry.
Other:Back.

On Fig presents an example of a table showing the state when the information of write protection is stored on the disk containing the drive specifications STUD and PSCAD corresponding to the present invention, using basic information disc, stored in the 0 field DUZ Fig.

That is, by determining the subsequent use of the reserve byte position BPG 0 field DUZ on the drive can transmit information indicating that the drive is protected from the recording.

(BPG)Sign write-protect the disk.
00bIndicates that the disk is not write-protected.
01bIndicates that the disc is protected (hard) from the recording.
02bIndicates that the disc is protected (flexible) from the record. The recording will not be performed on an entire disk, except the OKM and so on.

In the corresponding present invention information write protection 00b indicates that the disk is not write-protected. 01b indicates that the entire disk is write-protected (the hard write protection), and 02b shows that the entire disk, with the exception of part of the disk (e.g., ACM), write-protected (flexible write protection). In the present embodiment, the security information from the record indicates that the entire disk is write protected or not write-protected. However, in the field of DOUZ Fig recorded information associated with the previous data whenever new data is written, so that the write protection can be set only for the recorded data corresponding to the OAS.

For example, even if the security information from records stored in a byte position BPG 0 field DOUZ, in addition to the region of DOUZ, you can record information of write protection on the planar disk, using the initial region and the end region, shown in figure 10. In addition, the byte position BP 0 field DUZ stores information about the status of the disk, so that the security information from the record can be stored in a byte position BP DUHS.

Because information write protection cannot be correct in STUD after recording, given the consistency with the family drives the MCC information write protection can be shown by the finalizer, which means an entry in a particular primary area and the destination area. That is, that the finalization is completed, shows that SCUD write-protected. Otherwise, it means that the write protection is missing.

Furthermore, since the management of defects OD, OD and OD disk CUPD is written to one and the same content many times to correct errors, it guaranteed reliability. In STUD and PSCAD this reliability is guaranteed by grouping data DOUZ region OAS and ensure data DUZ belonging to the same group with the same content.

The disk must include information about the format whenever the current disk is STUD or PSCAD, so that the disc STUD and drive PSCAD compatible in the same drive. As shown in Fig format DUZ can be defined using the byte position BP and BP field DUZ as follows.

(BP 0, 1)The format of DOUZ.
0001hFor the record
0002hTo overwrite.
0003hFor a mode that is compatible with recording and overwrite.

Fig is a flowchart illustrating a method of protection against the entry corresponding to another variant implementation of the present invention, the proliferation of applications on PSCAD contained in the case.

First, determine (phase spider S301 demonstration), installed the drive in the enclosure. If the drive is installed in the housing, the check (step W302) opening status of the prohibition of recording the chassis. That is, if the hole of the prohibition of recording the chassis is closed, it means that the cartridge is not write protected, and if the hole is ban the account is open, it means that the cartridge is write-protected.

If the drive phase spider S301 demonstration is not installed in the case, or when checking on the stage W302 status holes ban records check (step S303), the sign of a write-protect the disk. That is, check the sign of the write-protect 0 field DUHS.

Then determine whether the information corresponds to the write protection state of the holes of the prohibition of recording the chassis (step S304). That is, when the information of write protection recorded on the disc and the hole of the prohibition of recording the chassis is open, determine (step S305), if the sign zametyat records in the state of “write protect”. Otherwise, the user is informed about what information to write-protect the disk does not match the condition, the holes write protection corps (step S306).

If at step S305 or after step S306 sign write-protect the disk is set to “write protect”, i.e. if either the drive or the enclosure is in the “write protection”, even if the write-protect a disk is not consistent with the state openings of the prohibition of recording the chassis, determine (step S307), set the drive state to “hard write protection”. If the drive is hard to write-protect the entire disk, including in the area of user data, protect it from the record (step S308). Otherwise, protect write-only data area of the user (step S309). In addition, if at the step S305, the sign of write protection is not able to “write protect”, the disk is not write-protect (step S310).

At the appropriate present invention recordable and/or rewritable media such as a disk that meets the specifications of the MCC, for example CUPD, SCUD and PSCAD, open-frame data disk, which is not the case, can be effectively protected. In addition, when either the housing or the disk is write protect, write prohibit data, and the user is given the opportunity is Rovereto state disk or cassette. The result is that data recorded to the disc can be effectively protected from unwanted blending write or erase.

1. The way to write-protect an optical disc device for recording and/or reproducing an optical disc in which data is recorded on a recordable and/or reproducible recording medium, which includes the initial region, the end region and a user data area, protect from unwanted blending recording or erasing, namely, that reads at least two back-up saved data write protection with recordable and/or reproducible recording media, comparing the read information of write protection for approval and determine whether a recordable and/or reproducible recording medium in the state write protection on the basis of the detected whether the agreement, and the security information from records stored in the zones identify the drive at least one of the areas of the initial region or end region of the recording media.

2. Method of write protection according to claim 1, characterized in that it further determines whether the information of the write protection information of the hard write protection, indicating that the status of the write protection cannot be recovered in a rewritable state, and banned the ut record data on the entire recording medium, if the write protection information is hard write protection, and otherwise deny write data only in the data area of the user.

3. Method of write protection according to claim 1, characterized in that it further determine whether information write protection information flexible write protection, indicating that the status of the write protection can be restored in a rewritable state, and prohibit writing of data on the entire recording medium, except for the indicated part of the recording media, if the write protection information is flexible write protection, and otherwise allow the writing of data in the data area of the user.

4. Method of write protection according to claim 1, characterized in that it further determine is whether the write protection for a specific area on the user data, and prohibit writing of data in the specific area of the data area of the user, if the information of write protection is intended for site-specific, and otherwise allow the writing of data in the entire data area of the user.

5. Method of write protection according to claim 1, characterized in that it further determines whether the recording medium in the case, if the recording medium is installed in the housing, then check to see if the case in which the state of write protection, and,

if the information write-protect the recording media is not consistent with the state of the write protection corps, inform the user about the difference.

6. Method of write protection according to claim 5, characterized in that it further prohibits the recording data on the recording medium, if the information write-protect the recording media or the state of write protection corps is set to write protect.

7. Method of write protection according to claim 1, characterized in that it further checks whether the user information of write protection, and adjust the security information from the information saved on the recording media, the state of write protection or the state of liberation write protection in accordance with the information of write protection, set by the user.

8. Method of write protection according to claim 7, characterized in that the phase adjustment information of write protection, if the user sets the state of write protection, correct information protection the write protection status of a record and, if the user sets the state to release the write protection, then determine whether the recording medium in the state of the hard write protection, and if the recording medium is set to the hard write protection, we inform the user that the liberation of protection from the recording is impossible, and otherwise correct information of write protection in the state of liberation write protection.

9. Method of write protection according to claim 7, characterized in that it further determines whether the recording medium in the case, inform the user about the contrary, if the write-protect of the recording medium as set by the user, and the status of the write protection of the body do not agree with each other.

10. Method of write protection according to claim 1, wherein the security information from records stored in multiple physically separate locations, each of the at least one zone identification disk.

11. The protection method of recording according to claim 1, wherein the security information from records stored in at least one area of the management of defects in the initial region or the final defect management area of the recording media.

12. Method of write protection according to claim 1, characterized in that a recording medium is recordable and reproducible recording media that meets specifications digital versatile disk random access (CUPD), a rewritable DVD (PSCAD) or the recording of the MCC (SCUD).

13. Method of write protection on item 12, characterized in that when the recording medium is a disk that meets the specifications PSCAD or STUD, information protect what you write is stored using the backup of bytes of the data field of the control record (DUHS) management recording disk, moreover, the management area of the recording disk is different from the initial region, the end region and the user data.

14. The way to write-protect an optical disc device for recording and/or playback of an optical disk that records and/or reproduces data on the recording medium or the recording media placed(CSOs) in the case of the cassette, the recording medium includes a user data area for storing data, and an area information record for storing information of write protection, suggests that prevented the recording of new data on the recording medium, and the case has a hole barring entry for write protection, namely, that determine how does the status of the write protection information write-protect status of the write protection hole prohibition of entry, and prevent the entry of new data on the recording medium, if the information of write protection or hole barring entry point to the state of write protection, to prevent the recording of new data on the recording medium, and information to write-protect the backup is stored in multiple locations in at least one area of the initial region or end region of the recording media.

15. Method of write protection on 14, characterized in that it further inform Paul is the user if the status of the write protection information of write protection and holes ban records are not consistent with each other.

16. Method of write protection on 14, characterized in that it further determines whether information of write protection in the state of write protection, determine whether information write protection in the state of the hard write protection, indicating that the status of the write protection cannot be recovered in a rewritable state, if write protection is set to write protect, prevent the entry of new data on the entire recording medium, if the information of write protection is set for the hard write protection, and prevent the entry of new data only in the data area of the user, if write protection is not installed to the hard write protection, and allow the entry of new data in the entire region of the recording media, if write protection is not set to write protect.

17. Method of write protection on 14, wherein the security information from records stored in the sign of the certification drive and sign the certification of groups of recording media, and more

determine whether information write protection sign the certification drive in the state of write protection, define the mouth of Olena whether the write protection feature of the certification of the disk in the hard write protection, indicates that the status of the write protection cannot be recovered in a rewritable state, if the write-protect feature of the certification of the disk is set to write protect, prevent the entry of new data on the entire recording medium, if the information of the write protection feature of the certification of the disk installed in the hard write protection, and prevent the entry of new data only in the data area of the user, if the write-protect feature of the certification drive is not installed to the hard write protection, and determines whether information of write protection characteristic the group certification in the state of write protection, and allow the entry of new data in the whole area of the recording medium, if the information of write protection characteristic certification group is not set to write-protect, and prevent the entry of new data into write-protected group sign certification group, if the write-protect indication certification group is set to write protect.

18. The way to write-protect an optical disc device for recording and/or playback of an optical disk that records and/or reproduces data on the recording medium or the recording media placed(CSOs) in the case of the cassette, and the media Zap the si includes a user data area for storing data, and an area information record for storing information of write protection, suggests that prevented the recording of new data on the recording medium, and the case has a hole barring entry for write protection, namely, that determine if the user enters new information of write protection in the recording and/or reproducing device of an optical disk, determine whether new information of write protection in the state of write protection, set the security information from the recording on the recording medium in the state of write protection of new information write protection, if the new information of write protection is set to write protect, determine whether new information of write protection in the state of liberation write protection, if the new information of write protection is not set to write protect, determine whether the security information from the information saved on the recording media, the status of the hard write protection, indicating that the status of the write protection cannot be recovered in a rewritable state, if the security information from the information saved on the recording medium, installed in the hard write protection, and change the security information from the information saved on the recording media in a rewritable state, if the information protection write not set to hard the write protection, and inform the user that the status of the write protection information of write protection cannot be released, if write protection is set to hard write protection, and information write-protect the backup is stored in multiple locations in at least one area of the initial region or end region of the recording media.

19. The way to write-protect an optical disc device for recording and/or reproducing an optical disc in which data is recorded on a recordable or reproducible recording medium, which includes the initial region, the end region and a user data area, protect from unwanted blending recording or erasing based backup saved data write protection, namely, that reads at least two back-up saved data write protection with recordable and/or reproducible recording media, determine the state of write protection for at least two backup saved data elements information write protection and determine whether a recordable and/or reproducible recording medium in the state of write protection or not in the state of write protection on the basis of consistent if at least two back-up shall apply in the case of data write protection, moreover, information write-protect the backup is stored in multiple locations in at least one area of the initial region or end region of the recording media.

20. Method of write protection in claim 19, characterized in that when a recordable and/or reproducible recording medium is set to write protect, if agreed by at least two back-up saved data write protection, additional data information write protection cannot read to verify determine the status of the write protection.

21. Method of write protection in claim 19, wherein the recordable and/or reproducible recording medium meets the specifications digital versatile disk (DVD).

22. The way to write-protect an optical disc device for recording and/or reproducing an optical disc in which data is recorded on a recordable or reproducible recording medium, which includes the initial region, the end region and a user data area, protect from unwanted blending recording or erasing based backup saved data write protection, namely, that reads at least two back-up saved data write protection from being recorded and/or reproduced carrier C is recorded, determine the state of write protection for at least two backup the stored data elements of the data protection records and determine whether a recordable and/or reproducible recording medium is not in a state of write protection on the basis of whether errors at least two back-up saved data write protection, and information write-protect the backup is stored in multiple locations in at least one area of the initial region or end region of the recording media.

23. Method of write protection on item 22, wherein the recordable and/or reproducible recording medium meets the specifications digital versatile disk (DVD).



 

Same patents:

The invention relates to a system for recording and/or playback in real-time the real-time files

The invention relates to the media, as well as recording, playback and transmission of video

The invention relates to the distribution of free areas to control the damage on the media drive, the method of manufacturing and a drive controller

The invention relates to the field of optical recording media, and particularly to a recording medium for storing information about the source position for each zone after the initial or re-boot

The invention relates to the field of optical recording and reproducing video and/or audio data, in particular to the recording medium for storing identification information of the manufacturer of the recording device, changing the contents of the recording media

The invention relates to a recording and/or playback of the still image and the additional audio data

FIELD: optical data carriers.

SUBSTANCE: for protecting optical disk from recording, information concerning protection from recording is read, which is previously recorded in at least one zone of starting or ending area of data carrier, and it is determined, whether the latter is in state of recording protection. In variant, when carrier is placed in cassette body, and body has aperture for forbidding recording protection of data on disk, it is determined, if recording protection state of recording protection data written on disk is matches with state of recording protection of said aperture, and recording of new data is prevented, if said protection data and aperture position forbid recording. In a variant information concerning recording protection is stored in zones of disk identification of at least one of zones of starting and ending area of carrier.

EFFECT: higher efficiency.

5 cl, 16 dwg

FIELD: optical data carriers.

SUBSTANCE: at least one free area is determined in position, following noted data area of user. Said free area is distributed in backward order from the last element of noted area. When replacing damaged elements of user data it is used from last elements of said free data area.

EFFECT: higher efficiency.

2 cl, 7 dwg

FIELD: data carriers.

SUBSTANCE: data carrier has formatted information for data and manufacturer information, containing identification information for recording device, which forms or modifies data on data carrier, and normalizes information, related to modification of data on carrier. Manufacturer information has individual format, incompatible to other manufacturers.

EFFECT: higher efficiency.

7 cl, 8 dwg

FIELD: data carriers.

SUBSTANCE: at least one free area is determined in location, following said user data area. Said free data area is distributed in reverse order from the last element of noted area. When replacing damaged elements of user data it is used starting from last elements of noted free data area.

EFFECT: higher efficiency.

2 cl, 5 dwg

FIELD: optical data carriers.

SUBSTANCE: data carrier has data area. The latter has multiple zones, in which code blocks with error corrections are formed and sectors remaining as a result of sliding replacement at the end of zone, number of which is less than necessary for forming of one code block with error corrections. Said sectors are not used for recording one code block with error corrections and are skipped, and said code block with error corrections is formed at the beginning of next zone after skipping sectors of zone noted above. Carrier has additional free space, necessary for skipping sectors remaining at the end of zone during sliding replacement process.

EFFECT: higher efficiency.

2 cl, 9 dwg

FIELD: optical data carriers.

SUBSTANCE: method includes following stages: forming of a group of multiple zones on disk, while a group includes data area of user, including code block with correction of mistakes, distribution of primary, free space for the group. Additional free space is distributed with possible exclusion of discontinuousness of code block with correction of mistakes contained in user data area, at the limit between zones and distribution of it at two zones. Such distribution may be realized by skipping sectors at the end of zone, of their number is less than needed for forming code block with correction of mistakes with correction of primary position of code block with correction of mistakes at limit between zones.

EFFECT: higher efficiency.

3 cl, 9 dwg

FIELD: data carriers.

SUBSTANCE: disk has several zones, while each zone has an area for user data for storing user data, and several zones form a group for controlling defects of data carrier, backup area for swapping defects for group is placed on disk, and data about source position for each zone is stored in previously set disk area, while method has following steps: reading of data concerning starting position for each zone, and access to data, on basis of read information concerning source position.

EFFECT: higher recording and reproduction stability due to possible processing of larger defects during hot swap, provided by joining several zones within limits of one group.

5 cl, 9 dwg

FIELD: data carriers.

SUBSTANCE: device has input zone, data recording zone, which is formed at outer peripheral side of input zone and into which multiple parts of content are recorded, and output zone, formed at outer peripheral side of zone for recording data. First and second information concerning control of copyright protection, by means of which copyright for multiple content portions is controlled, is recorded on data carrier is varying positions, secrecy of which is different from each other.

EFFECT: higher efficiency.

4 cl, 21 dwg

FIELD: data carriers.

SUBSTANCE: device has calculating, reserving and recording modules. Each variant of semiconductor memory card contains area for recording user data for controlling volume and area for recording user data. On carrier method for computer initialization is recorded, including calculation of size of volume control information, reserving areas and recording therein of control information for volume and user data, recording main boot record and sectors table in first section of first area, skipping preset number of sectors, recording information of boot sector of section, file allocation table and root directory element to following sectors.

EFFECT: higher efficiency.

5 cl, 59 dwg

FIELD: optical data carriers.

SUBSTANCE: method includes stages, during which manufacturer information is recorded on carrier, which is used for supporting specific function of manufacturer, while manufacturer information contains identification information of recorder manufacture, which recorded and/or modified data of data carrier, different from identification information before recording or modification.

EFFECT: higher speed of operation, higher efficiency.

6 cl, 8 dwg

FIELD: optical data carriers.

SUBSTANCE: for protecting optical disk from recording, information concerning protection from recording is read, which is previously recorded in at least one zone of starting or ending area of data carrier, and it is determined, whether the latter is in state of recording protection. In variant, when carrier is placed in cassette body, and body has aperture for forbidding recording protection of data on disk, it is determined, if recording protection state of recording protection data written on disk is matches with state of recording protection of said aperture, and recording of new data is prevented, if said protection data and aperture position forbid recording. In a variant information concerning recording protection is stored in zones of disk identification of at least one of zones of starting and ending area of carrier.

EFFECT: higher efficiency.

5 cl, 16 dwg

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