Device to readout data from data carrier

IPC classes for russian patent Device to readout data from data carrier (RU 2512088):

G11B20/10 - Digital recording or reproducing

Another patents in same IPC classes:

Optical information recording medium, apparatus for recording information, apparatus for reproducing information, method of recording information, method of reproducing information and method of making information recording medium / 2511701

Invention discloses an optical data storage medium, a method for production thereof, methods of recording and producing information and apparatus for recording and reproducing information. The medium has a control region in which control information is stored. The control information includes a format number which provides information on the type of recording strategy and type of pre-compensation during recording, and a recording strategy parameter which provides information on the size of the position shift of the edge or change in pulse width in the recording pulse series for forming a record label. The value of the format number is varied according to the combination of the type of recording strategy and the type of pre-compensation during recording.

Signal processing method and apparatus for three-dimensional reproduction of additional data / 2510081

Signal processing method includes extracting three-dimensional (3D) reproduction information from subtitle data. The subtitle data include information on the region in which the subtitles are displayed. The 3D reproduction information includes an offset value which indicates the depth and direction of offset. The offset direction indicates the direction in which the offset value is applied for each of said at least one region.

Device for reproducing data from data storage medium / 2491661

Device has a reading unit which reads data from the data storage medium and a controller which controls the reading unit in order to read a substitution unit from the data storage medium using a defect list element. The defect list element contains information on the location of the initial unit and information on location of the substitution unit for substituting the initial unit. The substitution unit is a recordable unit for substituting the initial unit using LOW substitution when a defect is detected in the initial unit during LOW substitution using a read-modify-write (RMW) process.

Data medium for managing data structure of audio and video data recorded thereon and reproducing device / 2484544

Medium contains clips, playlists and metadata. Each clip contains a stream of AV data and clip information for attributes. Playlists are blocks for reproducing AV data. Each playlist contains a set of play elements corresponding to intervals for playing clips. Metadata are generated for such a playlist to provide a tile scene search function in the AV data. The metadata are defined scene after scene and contain information relating to a search keyword which must be applied to the corresponding scene. Title scene search is applicable when AV data are reproduced on the main reproduction path, and is inapplicable when AV data are reproduced on a secondary reproduction path.

Method of recording information and method of reproducing information / 2483369

In the recording method, first conversion is performed with inversion on bits of symbols of a codeword which is encoded with an error correction code and includes a plurality of symbols in order to form conversion information and the conversion information is recorded on a first recording medium. First conversion is such that the distance between first information, obtained by performing reverse conversion for first conversion of conversion information, and second information obtained by performing reverse conversion for second conversion, which is different from the first conversion of the conversion information, is 1/2 of the minimum free distance of the error correction code.

Reproducing device / 2481651

Device comprises a video coder made as capable of decoding video data, a graphical decoder and a controller. The graphic decoder is made as capable of decoding graphical data for display of a menu applied onto the image and to read information of transformation effect included into multiple menu pages and information control. A controller is made as capable of defining whether it is necessary to perform the first effect of screen conversion, when there is the first conversion between the specified multiple menu pages, to perform the second effect of screen conversion between the specified multiple pages and to display a menu page on a screen on the basis of information of the conversion effect and control information.

Data medium containing metadata for multiview title and apparatus and method for reproduction thereof / 2480849

Data medium contains film image data which support multiple views, and metadata which are used during title scene search. The metadata are given scene after scene and contain information associated with a search keyword to be applied to the corresponding scene, and attributes containing an entry point which sets the start time of that corresponding scene, the duration of which sets the duration of that corresponding scene, and the number of the view which sets the view of the scene which supports multiple views.

Storage medium containing interactive graphics stream and reproduction therefor / 2479874

Storage medium contains video data and graphics data of menu pages. Graphics data contain an interactive composition segment (ICS). The ICS contains first time information which assigns time when a button can be selected from a menu page, second time information indicating the time of the end of interactive display, at which the ICS becomes invalid. The ICS also contains a field which indicates the display set type. The type indicates whether the display set contains all data needed to display composition of the menu page, or whether the display set contains only data which are altered from the previous composition, defined by the previous display set. Each menu page contains a page identifier and transition effect information which is applied to the corresponding menu page when performing transition of the corresponding menu page. Menu page transition is performed when the menu page is displayed or disappears.

Method for formation of disc library / 2479051

In the method metadata is read from a data medium, and read metadata is saved in a reproduction device. A disc library is generated, using metadata recorded into a storage module. Metadata contains a volume identifier, which indicates, whether audio visual data creates a volume. Also metadata contains the first element, indicating the number of data media making a volume, and the second element indicating a position of a data medium in this volume.

Method of storing metadata from data medium in reproducing device / 2477536

In the method, metadata are read from a data medium and then stored in a reproducing device. The metadata are used to search for the required audiovisual data from audiovisual data stored on the data medium. The metadata contain a volume identifier which indicates the volume, which consists of a plurality of discs, used to create a disc library. The metadata also contain a first element which indicates the number of discs making the volume, and a second element which indicates the index number of the data medium in that volume.

/ 2250517

/ 2251821

/ 2258266

/ 2258267

/ 2262142

/ 2270485

/ 2270530

/ 2273109

/ 2273893

/ 2273894

FIELD: physics, computation hardware.

SUBSTANCE: invention relates to computers. Proposed device comprises a readout and disc playback system. Said readout is configured to readout data from particular region of data carrier. Control data comprises data on playback speed and data on maximum speed of data transmission complying with required application. Said data on playback speed differs from that on maximum transmission speed while playback speed making an adequate speed of main data playback. Disc playback system is configured to be controlled by aforesaid readout and data carrier as far as the drive is concerned and servo control to playback main data written in main data region in response to data on playback speed and/or data on transmission maximum speed.

EFFECT: ruled out faults at playback caused by absence of data on audio-video flow transmission speed.

10 cl, 6 dwg

1. The technical field

The present invention relates to a method for management 5 information about the playback speed for reproducing the main data recorded on the recording medium of high density, such as Blu-ray disc read-only (ROM - Read-Only Memory), playback speed, suitable for recorded data and the recording medium of high density, with such information about the playback speed.

The present invention relates to a method of playback of the main video and audio data recorded on the recording medium of high density, with a corresponding playback speed based on the information obtained from such recording media.

2. The level of technology

The standardization process new rewritable optical disk of high density, allowing you to burn large volumes of high-quality video and audio that passes quickly, and in the near future is expected to enter the market of industrially produced new optical drive. One example of such a new optical disc is a rewritable Blu-ray disc (BD-RE - Blu-ray Disc Rewritable).

As shown in figure 1, a rewritable Blu-ray disc (BD-RE) arranged in the radial direction, in the form of a landing zone, the transition region and service area BCA (BCA - burst cutting area), the initial field, the field data and the destination area.

The initial region arranged in a first security Guard 1 - Protection 1), the field of a permanent information and control data (PIC PIC - permanent information and control data), the second security Guard 2 - Protect 2), information (Info 2) and the area of optimal power calibration (OPC optimum power calibration). The protection area 1 and the area of permanent information and control data (PIC) is the pre-recorded region and the rest of the initial region, the data region and the destination region are writable fields.

The area of permanent information and control data (PIC) is used for recording or storing General information about the disk, which is stored permanently. General information on the disc is encoded by frequency modulation and then recorded on the convolution of disk tracks through binary phase modulation, as shown in figure 2.

In addition to the rewritable Blu-ray discs (BD-RE) large companies intensively discuss technical specifications Blu-ray disc read-only (BD-ROM). As shown in figure 3, Blu-ray disc read-only (BD-ROM) is arranged in the inner region, the landing area, the transition area, the information area and the peripheral area. Blu-ray disc read-only (BD-ROM) is characterized by the fact that in the data area within the field of information you can store high-quality basic Audi the video.

For example, a rewritable Blu-ray disc (BD-RE), typically used to record the data stream of digital broadcasting, whose transmission rate of 36 Mbit/s on the other hand, on Blu-ray disc read-only (BD-ROM) you can store data audiovideofoto high-quality video content that require a higher transfer rate of 40 Mbps or more. Therefore, if you do not know the baud rate, suitable for high-quality audiovideofoto recorded on Blu-ray disc read-only (BD-ROM), the operation of reading data from a Blu-ray disc read-only (BD-ROM) with a baud rate of 36 Mbit/s causes a crash when playing audiovideofoto.

3. The invention

Thus, the main purpose of the present invention is the provision of a method of managing information related to the playback speed, recorded on the recording medium is read-only, which allows playback of recorded video content on it with the playback speed, suitable for this content.

Another purpose of this invention is the provision of a recording medium with information about the playback speed, which determines the playback speed, which can be qualitatively reproduced recorded thereon video content in real time.

One more the second purpose of the present invention is the provision of a method of obtaining a value of the playback speed of the recording medium, which can be reproduced video media recording, and playback of the recording media with the specified playback speed.

The method of recording information on the playback speed on the recording medium according to the present invention includes: recording video data on a recording medium and recording information about the playback speed of video data before the data region in which the recorded video.

The recording media according to the present invention is characterized by the fact that it contains video data, as well as information about the speed of their play, written before the data region that contains video data.

How to play the recording media according to the present invention includes the following steps: move the recording medium in which recorded video data; receiving from the media recording information about the speed of video playback and video playback when you move the recording medium at a speed equal to or greater speed defined by the speed of playback.

According to the present invention, has the ability to play high-audiovideoediting the recording media that requires a higher transmission speed than the speed of the stream of digital broadcasting.

4. Brief description the drawings

In the drawings:

1 schematically shows the structure of a rewritable Blu-ray disc (BD-RE);

figure 2 shows a high-frequency modulated tracks, educated in the field of a permanent information and control data (PIC) rewritable Blu-ray disc (BD-RE);

figure 3 shows the format of the fields Blu-ray disc read-only (BD-ROM);

figure 4 shows the initial area in which recorded information about the playback speed in accordance with the present invention;

figure 5 shows a table with information about the disc in the field of a permanent information and control data (PIC), including information about the playback speed in accordance with the present invention, and

figure 6 is a schematic representation of the playback device optical drive for playing Blu-ray disc high density in accordance with the present invention.

5. Preferred examples of carrying out the invention

Below with reference to the accompanying drawings, the detailed description of the preferred embodiments of the present invention, allowing a better understanding of its essence.

As discussed above with reference to figure 3, Blu-ray disc read-only (BD-ROM) according to the present invention is arranged in the inner region, the landing area of the disk, the transition region, area information and and the peripheral region.

Disc info, among other things, includes the ID of the disc information DI (DI - Disc Information), the format of the disc information (DI) and the size/version of the disk, and is recorded in the region of the permanent information and control data (PIC) in the information area. Data is recorded on Blu-ray disc read-only (BD-ROM) by creating pre-pits on the surface of the Blu-ray disc read-only (BD-ROM).

The data area in the information area is used to record high-quality video in real time, such as the contents of the film for which you want the playback speed (baud rate) of 40 Mbps or more. As shown in figure 4, information about the disc includes in addition to General information containing the ID of the disc information, the information about the playback speed (transfer rate) of video data.

For example, information about the playback speed (transfer rate) has a length of 4 bytes and is written in the reserved area in the table information of the disk in bytes 32-35, as shown in figure 5. Information about the playback speed (transfer speed) can be written in the field 'maximum transfer rate of application', whose length is one byte.

Information about the playback speed (transfer speed) can be written in terms of its relationship to the velocity of the stream digitally what about the broadcast in 36 Mbit/s (hereinafter this speed is indicated 1X). For example, if the transmission rate of the video content from Blu-ray disc read-only (BD-ROM) is more than 40 Mbit/s and the ratio is equal to k, where k is an integer equal to or greater than 1, the information about the playback speed (transfer rate) becomes more 40/36×k (approximately 1,12k). If the transmission rate of the video content is 40 Mbit/s, as the information about the playback speed (bit rate) recorded a value of 1,12k.

As shown in scheme 6, the playback device for optical disks according to the present invention contains, among other things, block 11 of the optical head for reading signals from the optical disk; system 12 play VCD (video disc play - VDP) to perform a signal processing operation of the servo and digital to analog (D/A) Converter 13.

After installation Blu-ray disc read-only (BD-ROM), on which the recorded video along with information on the speed of playback (transfer speed), the system 12 play VCD begins to rotate Blu-ray disc read-only (BD-ROM), and then manage unit 11 of the optical head in such a way as to define the scope of the permanent information and control data (PIC) on Blu-ray disc read-only (BD-ROM) and read the information about the disc from the field of a permanent information and control data (PIC). When s is ditch the Blu-ray disc read-only (BD-ROM) is reproduced with a base 1X speed or maximum speed, with which data can be read out from the field of a permanent information and control data (PIC). If it is determined that the data in the field of a permanent information and control data (PIC) are encrypted Blu-ray disc read-only (BD-ROM) should be rotated with maximum speed.

Then the information about the playback speed (transfer speed) is extracted from one byte 17th byte or 4 bytes on a 32-m byte of disc information.

For example, if the information about the playback speed (transfer rate) is defined as 40 Mbps, ie 1,12k, 12 system playback VCD drives Blu-ray disc read-only (BD-ROM) with speed 1,12k, multiplied by 1X (hereinafter - 1,12kX), and moves the block 11 of the optical head in the zone data, resulting in a video and/or audio data is read and then decoded in the output. If the playback device of the optical disk 6 can work with playback speed (transfer speed) of several levels, for example, N₁X, N₂X, N₃X, ..., N_IX, where N₁N₂N₃, ..., N_Iare integers, and not one of the several levels of the playback speed (transmission speed) does not match the playback speed (transfer speed), the video content is reproduced from the playback speed of one of the few who their levels, the nearest to a speed greater than the playback speed (baud rate). For example, if the playback speed (baud rate) is 1,12k, which is located between the N_I-2and N_I-1(N_I-2<N_I-1), the system 12 play VCD drives Blu-ray disc read-only (BD-ROM) with a speed of N_I-1X.

Although the invention is disclosed on a limited number of examples of its implementation, specialists in the art with this disclosure, will appreciate numerous modifications and changes. It is assumed that all such modifications and changes are within the essence and scope of the present invention.

1. Device playback data from the recording media that contains:
a reading device configured to read control information from a specific area of the recording medium specified by the control information includes information about the playback speed and information about the maximum transfer rate that indicates the maximum transmission rate required by the application, and the information about the playback speed differs from the information about the maximum transmission speed and the playback speed is the speed the proper reproduction of the main data, and
the system disc, with konfigurirovaniyu to control the reading unit and a recording medium in relation to the propulsion and steering to reproduce the main data, recorded in the area of master data in response to information about the playback speed and/or information about the maximum transfer rate.

2. The device according to claim 1, in which the management information read from the reader, it also includes information about the size and version of the recording media, indicating the size of the media and the version number, respectively, and information about the object structure.

3. The device according to claim 1, in which the system disc is configured to control the playback key data in response to the information about the playback speed represents the speed above base speed.

4. The device according to claim 1, in which the system disc is configured to control the playback key data in response to information about the playback speed set such that the main data are reproduced with speed above base speed.

5. The device according to claim 1, in which the system disc is configured to control the playback key data in response to information about the playback speed set such that the main data are reproduced with a baud rate of 36 Mbps, 40 Mbps or higher.

6. The device according to claim 1, in which the system disc is configured to control playback is the introduction of the main data in response to information about the playback speed, written in the form factor transfer rate of the underlying data.

7. Device playback data from the recording media that contains:
the device driving configured for driving the recording media;
a reading device configured to read video data from the main data of the recording medium; and
the system disc, configured to control the device driving with a speed above base speed for playback of the specified video data, with the specified speed is the transmission speed of 40 Mbps or higher.

8. The device according to claim 7, in which the system disc is configured to control the device to actuate based on the information about the playback speed recorded in a specific area of the recording medium, and the information about the playback speed is the speed above base speed.

9. The device according to claim 7, in which the system disc is configured to control the device to actuate based on the information about the playback speed, and the information about the playback speed is set such that the video data are reproduced with speed above base speed.

10. Device is istwo according to claim 7, in which system the disc is configured to control the device to actuate in response to the information about the playback speed recorded in the form of a speed ratio of the transmission of video data.