Structure if information carrier and method for reading of data recorded on information carrier

FIELD: physics, computer engineering.

SUBSTANCE: invention is related to the field of information carriers with multilayer structure and methods of data reading. Carrier comprises the first recording layer containing original area, the first user section located downstream original area and intended for storage of user data, and the first section of transition located downstream the first user section; the second recording layer superimposed on the first recording layer and comprising the second section of transition, the second user section located downstream the second section of transition and intended for storage of user data, and final section located downstream the second user section, besides, original area of the second transition section follows after final address of the first transition section. Method for data reading consists in reading of final address of the first user section from original area and number of sectors in the first and second sections of transitions; reading of current address of sector, detection of current address location by final address of sector and, afterwards, the following recording level is selected, current address of sector is interpreted, initial address of the second user section in the second recording layer is calculated and found by final address of the first user section with application of procedure of transformation for provision of sequential reading of user data.

EFFECT: increase of carrier capacity and reduction of time required for data reading.

16 cl, 12 dwg

 

The technical field to which the invention relates.

The present invention relates to the General field patterns of media and ways of reading the data recorded on the storage media, and more particularly to the structure of the medium and the method of reading data recorded on the recording media is applicable when working with multi-layered structures.

The level of technology

From modern optical disks used as carriers of information, requires a large capacity for recording data. For example, such an optical disc is a dual layer DVD. Double-layer DVD contains two layers of recording information and has the capacity to record, equal to 8.5 GB (gigabytes), exceeding the capacity of a single-layer DVD-ROM, equal to 4.7 GB.

Figa illustrates the principle of reading data recorded on an optical disc with two recording layers. As shown in figa, at pre-defined points of the transparent substrate is formed of recesses and areas (tabs) of different lengths. Both deepening and sites covered by a translucent layer and a fully reflective layer for formation of the first recording layer L1 and the second recording layer L2, between which is provided an intermediate layer L3, made for example of a light curing resin (TR) to prevent unwanted maintains is deystviya signals from the first recording layer L1 and the second recording layer L2. With the proper adjustment of the thickness of the fully reflective layer of the first recording layer L1 reflects part of the fall in light, and the second recording layer L2 reflects all falling in the light. When such an optical disk placed in the optical drive, the drive can read data recorded on an optical disc by adjusting the distance between the objective lens and the recording layers of the optical disk (the first recording layer L1 and the second recording layer L2) using the optical sensor so as to move the focal point (focus) of the laser beams between the first recording layer L1 and the second recording layer L2.

It should be noted that if the media contains two or more recording layers, when assigning the addresses of the physical sectors should take into account two considerations. The first consideration is that each of the addresses of the physical sectors of the two or more recording layers must be unique (unlike the case of the read method of parallel tracks (RTR)). If the first recording layer contains the address of the physical sector, identical to the address of the physical sector contained in the second recording layer, the drive is unable to determine which of the recording layers should be selected for reading or writing information using identification the data addresses of the physical sectors. The second consideration is that the addresses of the physical sectors are assigned to each of the recording layers, can easily be converted to any address other recording layers, since the addresses of the physical sectors correspond to the location information. To enable quick and accurate movement of the optical sensor of the drive to the desired sector addresses to physical sector is used to calculate the distance that you must move the optical sensor.

In modern double-layer disks typically use the scanning method of the opposite track (Opposite Track Path OTP). As shown in figv, in sequential reading of an optical disk according to this method, an optical sensor is used for reading information from the disk, starting with the initial zone of the recording layer 0. Then the optical sensor moves over the area data to the Central zone, located in the outer ring, and then the optical sensor focuses on the following recording layer 1. Then the optical sensor is moved in the opposite direction and carries out the reading of data recorded in the Central zone of layer 1 until it reach the end zone, located in the inner ring, causing the optical sensor is in the same place where he started the movement, but stokesia the data on the target area of the layer 1, and not in the initial zone of layer 0, which started reading. The fact that the optical sensor does not need every time to move back to the inner ring at the completion of reading the data of the next recording layer, and can go directly to the reading of the data recorded in another recording layer, reduces the search time by the optical sensor data recorded in the next recording layer, which leads to the widespread use of this method.

In patent publication U.S. No. 5881032 Optical Disk, And Optical Disk Reproduction Method And Apparatus Implementing a Complementary Mathematical Relationship For Plural Layers" ("Optical disc, and method of reproduction of the optical disk and the device performing the mathematical relation of complementarity between multiple layers") describes the rules for coding location for media. In accordance with the method according to this publication, as shown in figa, the media contains multiple recording layers, and the spiral grooves layers with odd numbers have directions playback opposite directions playback spiral grooves layers with odd numbers, and addresses of the physical sectors are assigned to layers with odd numbers and layers with even numbers and have the same radii, mutually complementary.

Figv ematichesky illustrates the assignment of addresses in the storage medium, containing at least two recording layers, the above-mentioned patent document. Address X physical sector located in the first layer L1 on the radius r, mathematically additional address X' physical sector located in the second layer L2 is also on the radius r. For example, if the sector of the first layer L1 on the radius r is the address of the physical sector, equal 030000h, the more he sector of the second layer L2 on the radius r is the address of the physical sector, equal to FCFFFFh mathematically more (in binary notation), the first address. As shown In figure 2, the shaded region 1A indicates the starting area and the shaded area 1b - middle zone. Not hatched area between the starting area 1A and the average area 1b indicates the area of user information. The first sector is provided for user information in the first layer is the physical address of the sector that is equal to Xin and the corresponding inner radius, and the last sector is provided for user information in the first layer is the physical address of the sector that is equal to Xout and the corresponding outer radius, and Xout more than Xin. The addresses of the physical sectors of the first layer L1 is sequentially increased from the inner ring to the outer ring. Is the address of the physical sector of the first with the HH L1 on the radius (R), used as the address corresponding to the physical sector of the second layer L2. Therefore, the addresses of the physical sectors of the second layer L2 is also consistently increased. In addition, the address of a start physical sector of the second layer L2 is not immediately after the address of the destination physical sector of the first layer L1.

On figs shows the approximate distribution scheme positions in media containing four recording layer. As shown in figs to distinguish between the addresses of the physical sectors of the third layer L3 and the fourth layer L4 from the addresses of the physical sectors of the first layer L1 and the second layer L2 to each of the addresses of the physical sectors add one byte prefix. In accordance with this scheme, only the last three bytes of the addresses of the physical sectors consistent with the principle of subsidiarity. For example, if we assume that in the third layer L3 contains the address of the physical sector, equal 01030000h, the fourth layer L4 on the same radius contains the address of the physical sector, equal 01FCFFFFh.

However, in accordance with the encoding rule addresses described in the above patent publication, only the addresses of the first recording layer and second recording layer are completely mutually disjoint, this method of coding addresses are usually used only with but what italiani information based on a dual-layer DVD-ROM drive. Thus, the encoding rule is characterized by poor tolerability and unsuitable for wider use. If this method of coding an address is applied to the optical DVD-ROM containing three or more recording layers, the data record must be provided with one extra byte optical DVD-ROM, which reduces the useful capacity of the disk (possible amount of recorded information). Each of the recording layers lose about 2.4 MB (megabytes) of useful volume. In addition, on a DVD disc with a radius of six inches, the area data record is located between the radius of 24 mm and 58 mm, If the encoding process of the addresses is performed in accordance with the encoding rule, when the width of the address in three bytes, there are only two short address range of the location of the recorded data from 030000h to 2930E9h and D6CF16h to FCFFFFh. Therefore, a large range of address locations data from addresses 2930E9h to D6CF16h remains untapped, and the majority of possible addresses optical DVD-ROM is not used (as shown in fig.2D). In addition, in the system of document storage location storing audio/video data on a conventional optical disc allocate the positions or locations of logical sectors (LSA, Logical Sector Address)that correspond to the addresses of the physical sectors (PSA, Physical Sector Address); therefore, p is acesse reading optical drive data, recorded on an optical disc, you must perform the conversion operation between the addresses of logical sectors and physical addresses of the sectors. In accordance with the General rule adopted by most manufacturers of optical disc, the address of a start physical sector recording area normal data DVD-ROM equal 030000h, and the address of a start logical sector equal 000000h; therefore, when the drive is supposed to read data recorded in the physical sector with a specific address corresponding to the logical sector address must be converted using a conversion formula. In the above-mentioned patent publication, the following conversion formula:

LSA=PSA-Xin, if the address of the physical sector is located in the first layer, and

LSA=PSA+[2×Xout+2]-Xin, if the address of the physical sector is located in the second layer, where the LSA and PSA addresses the logical and physical sector, respectively,

However, such a conversion formula between LSA and PSA applies only to dual-layer DVDs using the scheme with mutually complementary addresses. Therefore, this conversion does not apply in the case of a DVD-ROM containing three or more layers, as additional bytes of prefix makes it impossible to convert the law of complementarity.

Accordingly, there is a need for the creation of the scheme of distribution of the data, applicable to multi-layered media containing more than two layers, which would provide efficient address assignment in optical storage media.

Disclosure of inventions

Thus, the problem to which the present invention is directed, is to eliminate the above disadvantages of the known technology by offering a structure of the information carrier and method of reading data recorded on the recording media applicable to layered media.

Another problem to which the present invention is directed, is the sentence structure of the information carrier and method of reading data recorded on the storage media, ensuring full use of non-assigned addresses, to increase capacity to record data.

Another problem to which the present invention is directed, is the sentence structure of the information carrier and method of reading data recorded on the storage medium, providing a simple method of converting between the addresses of the physical sectors and addresses of logical sectors that are applicable to layered media.

Another problem to which the present invention is directed, is the sentence structure of the media inform the tion and method of reading data, recorded on the storage medium, for enhancing the effectiveness of reading data, resulting in reduction of time reading.

In accordance with the present invention for solving the tasks the proposed structure of the medium and the method of reading data recorded on the storage media. The structure of the storage medium includes the first recording layer containing the initial region, the first user of land located directly after starting physical sector area and for storing user data, and the first transition area, located directly after the physical sector of the first user area, the second recording layer superimposed on the first recording layer and second recording layer contains a second transition area, the second user station, located directly after the physical sector of the second transition area and for storing user data, and the final section, located directly after the physical sector of the second user of the site, and the initial region, the first the plot of the transition, the second transition area and the destination area contain a constant number of physical sectors, and the initial Akrestsina sector of the second transition area immediately after the end address of the physical sector of the first section of the transition.

In accordance with another embodiment of the structure of the information carrier according to the present invention also includes a first recording layer containing the initial region, the first user of land located directly after starting physical sector area and for storing user data, and the first transition area, located directly after the physical sector of the first user site, the intermediate recording layer superimposed on the first recording layer, and the intermediate recording layer contains an outer transition area, the user area located immediately after the physical sector of the outer transition area and for storing user data, and internal transition area, located directly after physical sector of the user area and the second recording layer, superimposed on the intermediate recording layer and the second recording layer contains a second transition area, the second user station, located directly after the physical sector of the second transition area and for storing user data, and the final section, located directly after the physical sector vtoro what about the user area, moreover, the initial area and the first area of the first recording layer, the outer area and the inner area of the intermediate recording layer and the second transition area and the end area of the second recording layer contain a constant number of physical sectors, and the starting address of the physical sector of the outer transition area immediately after the end address of the physical sector of the first area, and the start address of the physical sector of the second transition area immediately after the end address of the physical sector of the inner part of the transition.

The method of reading data from storage media applicable to the storage media containing the first recording layer and second recording layer superimposed on the first recording layer and the first recording layer contains the initial region, the first user of land located directly after starting physical sector area and for storing user data, and the first transition area, located directly after the physical sector of the first user area and the second recording layer contains a second transition area, the second user station, located directly n the following physical sector of the second transition area and for storing user data, and the final section, located directly after the physical sector of the second user of the site. The method includes (1) an entry in the start area the start address of the physical sector (SGIPSA) the initial region, the initial address of the physical sector (SURPSA) of the first user site, the destination addresses of the physical sectors (EPSA) of the first user site and the second user of the site and three numbers representing the number of physical sectors in the first phase of transition, the second transition area and the target area; (2) reading end address of the physical sector of the first user of the site from the home region, as well as quantities of physical sectors in the first phase of transition and the second transition area; (3) read current address physical sector, a check to find the current address of the physical sector on the destination address of the physical sector and, in case of positive outcome of the test, go to step (4), otherwise repeat step (3); and (4) move to the next recording level, the interpretation of the current address of the physical sector and the calculation and finding the start address of the physical sector of the second user area of the second recording layer by the final address of the physical sector of the first user site with COI is whether the predetermined conversion routines to provide sequential reads the user data.

Compared to known technologies proposed structure of the medium and the method of reading data recorded on the recording media applicable to media containing at least two recording layers, and provide full use of the rooms location addresses. In accordance with the present invention also offers a simple method of converting between the addresses of the physical sectors and addresses of logical sectors. In addition, the present invention allows to analyze the location data stored on the storage medium and prepared for reading by the corresponding address information stored in the initial region, which increases the efficiency of reading data from storage media and reduces the readout time.

Brief description of drawings

The present invention will become more clear from the following detailed descriptions of preferred options for its implementation, given with reference to the accompanying drawings. In the drawings:

on figa (prior art) is a diagram illustrating the tracking and organization of information on a two-layer optical disc with two recording layers,

on FIGU (prior art) shows a two-dimensional diagram of a method of encoding location OTP method used by famous the m technology in a two-layer optical disk,

on figa (prior art) shows a diagram of the spiral grooves of the optical disc with two recording layers by known technologies,

on FIGU (prior art) shows a two-dimensional diagram of the destination addresses in the storage medium with two recording layers by known technologies,

on figs (prior art) shows a two-dimensional diagram of the destination address in the data carrier with four recording layers by known technologies,

on fig.2D (prior art) is a diagram of layers of mutually disjoint addresses of the physical sectors on well-known technologies,

on figa shows a two-dimensional diagram of the structure of the information carrier according to the first variant implementation of the present invention,

on FIGU shows a two-dimensional diagram of the structure of the information carrier according to the second variant of implementation of the present invention,

- figure 4 shows the block diagram of the working procedures of the layer definition that reads or has read an optical sensor in accordance with the address of the physical sector

- figure 5 shows the block diagram of the working procedures for determining the need of moving the optical pickup to a different layer using calculations using the procedure in figure 4,

on figa shows a block diagram illustrating the conversion of the address of the physical sector and the RES logical sector

on FIGU shows a block diagram illustrating the conversion of the address of the logical sector address of the physical sector.

The preferred embodiment of the invention

The following description contains detailed information related to the implementation of the present invention. For the person skilled in the art from the description of the implementation of this option will become clear other advantages and features of the present invention. It is obvious that the present invention can be implemented and applied in a way that is different from the case described in this application. It should also be recognized that the invention is not limited to the described specific embodiment, but may be subjected to various modifications, changes and substitutions that do not change the essence of the present invention.

The structure of the information carrier according to the present invention contains at least two recording layers. In the process of manufacturing a multilayer disk by known technologies several films adapted for recording data, impose or paste on the substrate. In the manufacturing process of both side edges of each of the recording layers of the multilayer disk becomes uneven under the influence of various factors, for example, deviations clamping devices. In affect, the, arise "error location". This "error location" may cause involuntary transfer optical sensor drive on another layer when reading data, which may not only lead to incorrect reading of data, but also to possible mechanical damage, since the optical sensor can go into the area with no data, in which he will not be able to properly focus on the track record data. To prevent incorrectly described the situation by known technologies use two protective area, located on the front and rear edges of the custom fields of each of the recording layers of the multilayer disk, and information about the addresses of the physical sectors and the names of the fields remain to ensure the availability of such areas. Thus, after the transition from one layer to another optical sensor may immediately consider the corresponding addresses of the physical sectors in accordance with the addresses on which it can focus to read. One of the distinguishing features of the present invention is that all protective field contains a constant number of physical sectors (as described below).

In accordance with this embodiment, the protective region is divided into sections of different functional is th purpose: the initial area, the internal area and an external area or the target area, which provide different functions. The initial region is provided in the initial address area of the first recording layer in a multilayer disk. Typically, the initial region is located in the inner ring of the multilayer disk and is used for recording relevant information that is interpreted by the optical sensor. The target region is located in the end area of the recording layer of the multilayer disk. If a multilayer disk contains an even number of recording layers, the initial region is located in the inner ring of the multilayer disk. If a multilayer disk contains an odd number of recording layers, the initial region is located in the outer ring of the multilayer disk. Internal transition area is located in the inner rings of all recording layers other than the first recording layer (if the outer ring of the last recording layer contains a finite area, the outer ring contains no external transition area).

On figa is a diagram of the structure of the information carrier according to the first variant implementation of the present invention. Reading of data is performed in the directions indicated by the arrows. The media contains the first Zap the define layer 31 and the second recording layer 32, superimposed on the first recording layer 31. The first recording layer 31 contains the initial region 311, the first user area 312 and the first section 313 of the transition. The initial region 311, the first user area 312 and the first section 313 of transition have consecutive addresses of the physical sectors (PSA). The second recording layer 32 contains a second section 321 of the transition, the second user area 322 and the final section 323. The second section 321 of the transition, the second user area 322 and the final section 323 also have consecutive addresses of the physical sectors. The first section 313 of the transition has the destination address of the physical sector, following immediately after or immediately before the starting address of the physical sector of the second section 321 of the transition. The initial region 311, the first section 313 of the transition, the second user area 322 and the final section 323 in the implementation structure of the media contain a constant and a reasonable number of physical sectors. However, the initial region 311, the first section 313 of the transition, the second user area 322 and the final section 323 may contain the same or different number of physical sectors, provided that these quantities do not change. In accordance with the first embodiment of the invention and the standard, certain special what finacialy DVD error conditions of each superimposed on each of the recording layers is not more than 0.5 mm, covers 676 tracks, if the pitch of the track is 0.74 μm and contains about 48,000 physical sectors on the level of the outer ring of the DVD. Therefore, one of the preferred embodiments of the present invention, it is assumed that the first section 313 of the transition and the second section 321 of the transition contain 50000 physical sectors. However, this assumption is only one of the preferred embodiments and not to limit the possible embodiments of the present invention. In addition, in the initial region 311 writes the starting address of the physical sector (SGIPSA) initial region 311, the starting address of the physical sector (SURPSA) of the first user area 312, the end address of the physical sector (EPSA1) of the first user area 312, the end address of the physical sector (EPSA2) of the second user area 322, and three numbers corresponding to the number of physical sectors in the first section 313 of the transition, the second section 321 of the transition and final part 323.

On FIGU is a diagram of the structure of the information carrier according to the first variant implementation of the present invention. Reading data in each layer is performed in the directions indicated by the arrows. The storage medium includes the first recording layer 31, the intermediate recording layer 33, naloge the hydrated on the first recording layer 31, and the second recording layer 32, superimposed on the intermediate recording layer 33. The first recording layer 31 contains the initial region 311, the first user area 312 and the first section 313 of the transition. The initial region 311, the first user area 312 and the first section 313 of the transition contain consistently located physical sectors. Intermediate recording layer 33 contains an outer section 331 of the transition, the custom section 332 and the inner section 333 of the transition. The outer section 331 of the transition, the custom section 332 and the inner section 333 of the transition also contain consistently located physical sectors. The second recording layer 32 contains a second section 321 of the transition, the second user area 322 and the final section 323. The second section 321 of the transition, the second user area 322 and the final section 323 also contain consistently located physical sectors. The destination address of the physical sector of the first recording layer 31 (i.e. the destination address of the physical sector of the first section 313 of transition) immediately before or after the start address of the physical sector intermediate recording layer 33 (i.e. the start address of the physical sector of the outer section 331 of the transition). The destination address of the physical sector intermediate recording layer 33 (e the destination address of the physical sector of the inner section 333 of the transition) immediately before or after the start address of the physical sector of the second recording layer 32 (i.e. the start address of the physical sector of the second section 321 of the transition). The initial region 311, the first section 313 of the transition, the outer section 331 of the transition, the inner section 333 of the transition, the second section 321 of the transition and the final section 323 contain in the implementation structure of the information carrier is constant and a reasonable number of physical sectors. However, these amounts may be the same or different, provided that they do not change. In addition, in the initial region 311 writes the starting address of the physical sector initial region 311, the starting address of the physical sector of the first user area 312, three target addresses of the physical sectors of the first user area 312, the intermediate user section 332 and the second user area 322, and five numbers corresponding to the number of physical sectors in the first section 313 of the transition, the outer section 331 of the transition, the domestic portion 333 of the transition, the second section 321 of the transition and final part 323.

The method of reading data recorded on the storage media described below in accordance with figa. It should be remembered that the application of this SPO is about reading is not limited to the case of two-layer structure of the information carrier, but also applies to more General case the structure of the multilayer storage media (for example, three-layer media depicted on figv).

In accordance with one variant of implementation of all the data recorded in the structure of the storage medium, read by using an optical sensor of the drive (not shown). The method described in example two-layer structure shown in figa includes:

(1) the Entry in the initial region 311 start address of the physical sector initial region 311, the start address of the physical sector of the first user area 312, the target addresses of the physical sectors of the first user area 312 and the second user area 322, and the three numbers corresponding to the number of physical sectors in the first section 313 of the transition, the second section 321 of the transition and final part 323;

(2) When read by the optical sensor data recorded on the storage medium, an optical sensor is focused on a certain site, located in the initial region 311, and reads the start address of the physical sector initial region 311, the starting address of the physical sector of the first user area 312, the destination addresses of the physical sectors of the first user area 312 and the second user area 322, and to whom icesta physical sectors in the first section 313 of the transition, the second section 321 of the transition and final part 323;

(3) comparing the read address of the physical sector of the first user section 312 with the address of the physical sector, which focused optical sensor, and determining the direction of displacement of the optical sensor, allowing the optical sensor to move to the start address of the physical sector of the first user area 312 for reading data recorded on the first user area 312 from the start address of the physical sector to the end address of the physical sector (transition from stage 3 to stage 4 is performed only after the address of the physical sector, which reads the optical sensor will be equal to or greater than the end address of the physical sector of the first user area 312 read from the initial region);

(4) After reaching the optical sensor end address of the physical sector of the first user section 312 executes a move instruction, which focuses the optical sensor on the second recording layer 32 to read the current address of the physical sector. Then the end address of the physical sector of the first user area 312 using a predetermined conversion method, described below, calculates the starting address of the physical is one sector of the second user area 322 of the second recording layer 32, and comparing the calculated starting address of the physical sector of the second user area 322 of the second recording layer 32 with the received the current address of the physical sector to enable movement of the optical sensor at the initial address of the physical sector and a continuous reading of the data. The current address of the physical sector retain and compare with the destination address of the physical sector of the second user area 322 up until the current address of the physical sector will be equal to or greater than the end address of the physical sector of the second user area 322, which corresponds to the completion of the operation of reading the data.

The working procedure of determining the position of the optical sensor according to the address of the physical sector and the need to move the optical pickup to the other layer, and the method of conversion between logical addresses of sectors and physical addresses of the sectors described below in accordance with figv. To simplify the description of this variant embodiment of the invention, it is assumed that the initial region 311, the inner section 333 of the transition and the second section 321 of transition media contain equal number of physical sectors, so that the number of physical sectors (G1) = (initial address of the physical sector SURPSA first custom plot 312) - (start address of the physical sector SGIPSA initial region 311). Similarly, it is assumed that the first area 331 of the transition and the final section 323 contain the same number (G2) physical sectors, and the number (G2) may be equal to the number (G1) or it may differ.

Figure 4 shows the block diagram of the working procedures for determining the current position of the optical sensor according to the address of the physical sector. As shown in figure 4, the working procedure begins with a step S410. At step S410 the following actions are performed: read start address of the physical sector (hereinafter briefly indicated SGIPSA) initial region 311 of the initial region 311, the start address of the physical sector (hereinafter briefly indicated SURPSA) of the first user area 312, the end address of the physical sector (hereinafter briefly indicated EPSA1) of the first user area 312, the end address of the physical sector (hereinafter briefly indicated EPSA2) intermediate user section 322 and the number (hereinafter briefly denoted by G2) physical sectors on the first section 313 of transition and calculate the number (hereinafter briefly indicated G1) physical sectors in the initial region 311 by the formula (G1)=(SURPSA)-(SGIPSA), and the number of physical sectors on the section 333 of the transition is equal to G1. This is followed by a transition to step S420.

At step S420, it reads the current address of the physical sector, followed by a transition to step S430.

At step S430, the production is carried out checking exceeding the value of X value (G2)+(EPSA1) and if the result is negative, the optical sensor is located in the first recording layer 31 (step S460), and if it is positive, then the switch is made to step S440.

At step S440 checks exceeding the value of X value (G2)+(EPSA2) and if the result is negative, then the optical sensor is located in the intermediate recording layer 33 (step S470), and if it is positive, then the switch is made to step S450.

At step S450 checks finding optical counter in the second recording layer 32.

Figure 5 shows the scheme of the working procedures, using the rule of determining the position illustrated in figure 4, to determine whether a transition of the optical sensor to another layer. In other words, when the user needs to read a particular sector of data, the working procedure provides an optical sensor, a method for determining whether there is a need to transition to another layer. The working procedure begins with step S510 read the current address of the physical sector (hereinafter briefly denoted by X), followed by a transition to step S520.

At step S520, it is determined address of the desired physical sector (hereinafter briefly denoted by Y), where Y is the address of the physical sector, the data from which you want to read to the user, after which proizvodid the transition to step S530.

At step S530, it is determined recording layer (hereinafter briefly denoted by L1), which is X, using the above rules, followed by a transition to step S540.

At step S540, it is determined recording layer (hereinafter briefly denoted by L2), which is Y, using the above rules (illustrated in figure 4), followed by a transition to step S550.

At step S550 checks the equality L1 and L2, in case of positive result of which the switch is made to step S560, and in case of negative result to step S570.

At step S560 is determined that the value of L1 is equal to L2, which means that the current address and the desired address are in the same layer and the transition of the optical sensor to the other layer is not required.

At step S570 is determined that the value of L1 is not equal to the value of L2, which means that for continuous data reading to move the optical pickup to another layer.

The diagram in figa illustrates the conversion process addresses the physical sector address to the logical sector. Taking into account signs on FIGU initial region 311, the inner section 333 of the transition and the second section 321 of the transition contains an equal number of physical sector is in; the first user area 312 and a user section 332 of the intermediate layer contain an equal number of physical sectors; the first section 313 of the transition, the outer section 331 of the transition and the second section 323 of the transition contains an equal number of physical sectors. The procedure begins with step S610, where it reads the following information: the start address of the physical sector (hereinafter briefly indicated SGIPSA) initial region 311 of the initial region 311, the start address of the physical sector (hereinafter briefly indicated SURPSA) of the first user area 312, the end address of the physical sector (hereinafter briefly indicated EPSA1) of the first user area 312, and the two numbers corresponding to the number of physical sectors (hereinafter briefly denoted by G2) on the first section 313 of transition and external section 331 of the transition, then the computation of three numbers (hereinafter briefly marked G1) for the initial region 311, the inner section 333 of the transition and the second section 321 of the transition, as well as the calculation of the number (hereinafter briefly denoted by Y) for the first user area 312 and the user section 332 of the intermediate layer, and (G1)=(SURPSA)-(SGIPSA), a (Y)=(EPSA1)-(SURPSA)+(1). This is followed by a transition to step S620.

At step S620 produces what I read physical sector addresses (hereinafter briefly denoted by X), converted to media. This is followed by a transition to step S630.

At step S630, the computation of the difference (hereinafter briefly denoted by W) between the values of X and SURPSA. This is followed by a transition to step S640.

At step S640 compares the values of W and Y; if W is less than Y, then it skips to step S651 for retrieving the address of the logical sector (hereinafter briefly indicated LSA), and otherwise, it skips to step S650.

At step S650 to reset the counter value (hereinafter summarised Count) to zero. This is followed by a transition to step S660.

At step S660, it is determined the separability of two (parity) of the Count values; in the case of even values jumps to step S671, and in the case of odd values - go to step S672.

At step S671 are calculated according to the formula (W)=(W)-(Y)-(2)×(G2). This is followed by a transition to step S680.

At step S672 are calculated according to the formula (W)=(W)-(Y)-(2)×(G1). This is followed by a transition to step S680.

At step S680 are calculated according to the formula (Count)=(Count)+(1). This is followed by a transition to step S690.

At step S690 values are compared why; if W is less than Y, then it skips to step S660, otherwise it jumps to step S691.

Figure 6 shows a scheme of the procedure of converting addresses of the logical sector address of the physical sector. The procedure begins with step S710, where it reads the start address of the physical sector (hereinafter briefly indicated SGIPSA) initial region 311 of the initial region 311, the start address of the physical sector (hereinafter briefly indicated SURPSA) of the first user area 312, the end address of the physical sector (hereinafter briefly indicated EPSA1) of the first user area 312, and two numbers (hereinafter briefly denoted by G2) for the first section 313 of transition and external section 331 of the transition, then the computation of three numbers (hereinafter briefly denoted G1) for the initial region 311, the inner section 333 of the transition and the second section 321 of the transition, as well as the calculation of two numbers (hereinafter briefly denoted by Y) for the first user area 312 and the user section 332 of the intermediate layer, and (G1)=(SURPSA)-(SGIPSA), a (Y)=(EPSA1)-(SURPSA)+(1). This is followed by a transition to step S720.

At step S720, it reads the address of the logical sector (hereinafter briefly denoted by X)to be converted to media. This is followed by a transition to step S730.

At step S730, the computation of private further summarised Q) and remainder (hereinafter briefly denoted by R) by dividing (X)/(Y). This is followed by a transition to step S740.

At step S740 is equality test value (Q) to zero; in case of equality jumps to step S751, and otherwise go to step S750.

At step S751, the computation of the addresses of the physical sectors (hereinafter briefly indicated PSA) by the formula (PSA)=(SURPSA)+(R).

At step S750 initialization parameter (hereinafter briefly indicated (I) by assigning a value (Q), reset counter (hereinafter summarised Count) to zero and initialize another parameter (hereinafter briefly denoted by W) and assign it a value of (0). This is followed by a transition to step S760.

At step S760 is the definition of divisibility by two (parity) of the Count values; in the case of even values jumps to step S771, and in the case of odd values - go to step S772.

In step S771 are calculated according to the formula (W)=(W)-(Y)-(2)×(G2). This is followed by a transition to step S780.

In step S772 are calculated according to the formula (W)=(W)-(Y)-(2)×(G1). This is followed by a transition to step S780.

At step S780 are calculated according to the formula (Count)=(Count)+(1). This is followed by a transition to step S790.

At step S790 are calculated according to the formula (i)=(i) (1). This is followed by a transition to step S800.

At step S80, it is checked to equal the value I to zero; in case of a tie, the switch is made to step S810, and otherwise return to step S760.

At step S810, the computation of the addresses of the physical sectors (hereinafter briefly indicated PSA) by the formula (PSA)=(W)+(SURPSA)+(R).

The above conversion procedure between the address of the physical sector and a logical sector address, illustrated in figa and 6B applicable to the structure of multi-layered media (including media, containing two, three or more recording layers). However, in the case of double-layer media with a simple structure and containing only one transition area, the conversion process can be simplified.

Contact figa and 6A. The conversion process addresses the physical sector address of first logical sector reads the start address of the physical sector (SGIPSA) initial region 311, the starting address of the physical sector (SURPSA) of the first user area 312, the end address of the physical sector (EPSA1) of the first user area 312 and the number (G2) physical sectors on the first section 313 of the transition and the second section 321 of the transition. The number (Y) of the first user area 312 is calculated by the formula (Y)=(EPSA1)-(SURPSA)+(1). Then it reads the converted physical address of the sector (X) with media information the AI. This is followed by calculation of the difference (W) values of X and SURPSA. In the last step, get the address of the logical sector by comparing the values of w and y. If W is less than Y, then the logical sector address (LSA) is set equal to W; otherwise, the logical sector address (LSA) is calculated by the formula (LSA)=(W)-(2)×(G2).

Contact figa and 6B. The conversion process addresses the logical sector address of the physical sector first reads the start address of the physical sector(SGIPSA) initial region 311 of the initial region 311, the starting address of the physical sector (SURPSA) of the first user area 312, the end address of the physical sector (EPSA1) of the first user area 312 and the number (G2) physical sectors on the first section 313 of the transition and the second section 321 of the transition. The number (Y) of the first user area 312 is calculated by the formula (Y)=(EPSA1)-(SURPSA)+(1). Then it reads the converted logical address of the sector (X). After that, the computation of the quotient (Q) and remainder (R) by dividing (X)/(Y). In the last step, the address of the physical sector (PSA) is calculated by the formula (PSA)=(SURPSA)+(Q)×[(Y)+(2)×(G2)]+(R).

In General, the structure of the medium and the method of reading data recorded on the data carrier, applicable to any optical drives containing at least two recording layers which have consecutive addresses adjacent (neighboring) recording layers. Thus, the present invention provides full use of numbers addresses. In addition, the present invention provides a simple method of converting between the addresses of the physical sectors and addresses of logical sectors. Moreover, according to the present invention, the destination address of the physical sector of all the recording layers is recorded in the initial area. Therefore, the optical drive can compare the current addresses of the physical sectors and to determine which of the recording layers at the moment reads an optical sensor. In addition, the optical drive can determine which of the recording layers is the address of the physical sector that must be considered, and to establish whether the transition of the optical sensor to another recording layer, which increases the efficiency of reading from storage media.

The above examples of embodiments describe the various tasks and features of the present invention, without imposing any restrictions. The person skilled in the art it is obvious that in the form of individual elements of the invention can be modified, not going beyond it. Thus, the protected scope of the present invention is defined by the attached claims.

1. The media containing the first recording layer containing the s starting area, the first user of land located directly after starting physical sector area and for storing user data, and the first transition area, located directly after the physical sector of the first user site; the second recording layer superimposed on the first recording layer and second recording layer contains a second transition area, the second user station, located directly after the physical sector of the second transition area and for storing user data, and the final section, located directly after the physical sector of the second user of the site, and the starting address of the physical sector of the second transition area immediately after the end address of the physical sector of the first part of the transition.

2. The carrier according to claim 1, characterized in that in the initial region recorded the starting address of the physical sector (SGIPSA) the initial region, the initial address of the physical sector (SURPSA) of the first user area and two numbers representing the number of physical sectors in the first phase of transition and the second transition area.

3. The carrier according to claim 2, characterized in that in the initial region is additionally recorded the final physical address is their sectors (EPSA) of the first user site and the second user of the site.

4. The carrier according to claim 1, characterized in that the addresses of the physical sectors in the first recording layer and second recording layer sequentially increase.

5. The carrier according to claim 1, characterized in that the addresses of the physical sectors in the first recording layer and second recording layer sequentially reduced.

6. The carrier according to claim 1, characterized in that the initial region, the first portion of the transition, the second transition area and the final section contains an equal number of physical sectors.

7. The carrier according to claim 1, characterized in that it is an optical disk.

8. The media containing the first recording layer containing the initial region, the first user of land located directly after starting physical sector area and for storing user data, and the first transition area, located directly after the physical sector of the first user site; at least one intermediate recording layer superimposed on the first recording layer, and the intermediate recording layer contains an outer transition area, the user area located immediately after the physical sector of the outer transition area and for storing user data, and EXT is Ni the transition area, located directly after the physical sector of the user area; a second recording layer, superimposed on the intermediate recording layer and the second recording layer contains a second transition area, the second user station, located directly after the physical sector of the second transition area and for storing user data, and the final section, located directly after the physical sector of the second user of the site, and the starting address of the physical sector of the outer transition area immediately after the end address of the physical sector of the first area, and the start address of the physical sector of the second transition area immediately after the end address of the physical sector of the inner part of the transition.

9. Media of claim 8, characterized in that in the initial region recorded the starting address of the physical sector (SGIPSA) the initial region, the initial address of the physical sector (SURPSA) of the first user area and five numbers representing the number of physical sectors in the first phase of transition, external transition area, the inner area of the transition, the second transition area and the destination area.

10. The media according to claim 9, characterized in that in the initial area of the stage is niteline recorded end addresses of the physical sectors (EPSA) of the first user site, intermediate user of the site and the second user of the site.

11. Media of claim 8, wherein the addresses of the physical sectors in the first recording layer, the intermediate recording layer and second recording layer sequentially increase.

12. Media of claim 8, wherein the addresses of the physical sectors in the first recording layer, the intermediate recording layer and second recording layer sequentially reduced.

13. Media of claim 8, wherein the initial region, the first transition area, the outer area, the inner area of the transition, the second transition area and the final section contains an equal number of physical sectors.

14. Media of claim 8, characterized in that it is an optical disk.

15. The method of reading data recorded on the storage medium, designed for reading data from storage media that contains the first recording layer and second recording layer superimposed on the first recording layer and the first recording layer contains the initial region, the first user of land located directly after starting physical sector area and for storing user data, and the first transition area, located directly after the physical sector of the first user site, and the second recording layer contains a second transition area, the second user station, located directly after the physical sector of the second transition area and for storing user data, and the final section, located directly after the physical sector of the second user of the site, the method includes the following steps:

(1) record in the starting area the starting address of the physical sector (SGIPSA) the initial region, the initial address of the physical sector (SURPSA) of the first user site, the destination addresses of the physical sectors (EPSA) of the first user site and the second user of the site and three numbers representing the number of physical sectors in the first phase of transition, the second transition area and the destination area;

(2) reads the destination address of the physical sector of the first user of the site from the home region, as well as the number of physical sectors in the first phase of transition and the second transition area;

(3) read the current address of the physical sector and verify the finding of the current addresses of the physical sectors on the destination address of the physical sector and, in case of positive outcome of the test, go to step (4), otherwise repeat step (3);

(4) move on after the respective recording level interpret the current address of the physical sector and calculate and find the starting address of the physical sector of the second user area of the second recording layer by the final address of the physical sector of the first user area using a predetermined conversion routines to provide sequential reads the user data.

16. The method according to item 15, wherein the reading of data is performed with the optical drive that contains at least two layers.



 

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