Specially formatted optical disk and method of playback

• US 6,771,884 B2
• Filed: 05/03/2001
• Issued: 08/03/2004
• Est. Priority Date: 06/24/1994
• Status: Expired due to Term

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Nagasawa, Masato
• Primary Examiner(s): NGUYEN, HUY THANH
• Application Number:
  US09/847,307
• Publication Number:
  US 20010017978A1
• Time in Patent Office: 1,188 Days
• Field of Search: 386/46, 386/95, 386/98, 386/109, 386/111, 386/112, 386/125, 386/126, 386/68, 386/70
• US Class Current: 386/329
• CPC Class Codes: G11B 20/10 Digital recording or reproducing
• CPC Class Codes: G11B 20/1217 on discs
• CPC Class Codes: G11B 20/1251 for continuous data, e.g. digitised analog information signals, pulse code modulated [PCM] data
• CPC Class Codes: G11B 20/1258 where blocks are arranged within multiple radial zones, e.g. Zone Bit Recording or Constant Density Recording discs, MCAV discs, MCLV discs
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 2220/216 Rewritable discs
• CPC Class Codes: G11B 2220/2525 Magneto-optical [MO] discs
• CPC Class Codes: G11B 2220/2537 Optical discs
• CPC Class Codes: G11B 27/005 Reproducing at a different information rate from the information rate of recording for television signals H04N5/783
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/036 Insert-editing
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/19 by using information detectable on the record carrier
• CPC Class Codes: G11B 27/24 by sensing features on the record carrier other than the transducing track ; sensing signals or marks recorded by another method than the main recording
• CPC Class Codes: G11B 27/28 by using information signals recorded by the same method as the main recording G11B27/22 takes precedence
• CPC Class Codes: G11B 27/3027 used signal is digitally coded
• CPC Class Codes: G11B 27/329 on a disc [VTOC]
• CPC Class Codes: G11B 7/0037 with discs
• CPC Class Codes: G11B 7/00745 Sectoring or header formats within a track formats in general G11B20/12
• CPC Class Codes: G11B 7/08541 involving track counting to determine position
• CPC Class Codes: H04N 19/61 : in combination with predictive coding
• CPC Class Codes: H04N 5/783 : Adaptations for reproducing at a rate different from the recording rate
• CPC Class Codes: H04N 5/85 : on discs or drums
• CPC Class Codes: H04N 9/804 : involving pulse code modulation of the colour picture signal components
• CPC Class Codes: H04N 9/8042 : involving data reduction
• CPC Class Codes: H04N 9/8063 : using time division multiplex of the PCM audio and PCM video signals

Abstract

In an optical disk storing digital image information in the form of a succession of blocks, each comprising a plurality of frames having I-, P- and B-pictures, an address format is preformatted in front of the block of image information of the plurality of frames. The data arrangement within each image information blocks is such that I- and P-pictures are collectively disposed. The position of the I-pictures within each block is shifted from one block to another. The I-picture data may be divided into fraction according to the position on the screen, the DCT frequency, or layering, and the fractional I-picture data may be arranged in the image information blocks, and a header or parity signal is recorded in front of each fractional I-picture data.

Claims

1. An optical disk, comprising:

a plurality of recording sectors, each sector being associated with an address recorded on said optical disk;

a plurality of tracks, each track including a plurality of recording sectors; and

digital image information recorded on the optical disk, the digital image information having an image information block including I-picture data for intra-frame coded pictures, P-picture data for predictive coded pictures, and B-picture data for bidirectionally predictive coded pictures, the image information block including a video attribute data region preceding the I-picture data, the P-picture data, and the B-picture data thereof, said video attribute data region containing picture arrangement or position information, which indicates an arrangement or position of coded pictures in the corresponding image information block on accessing during playback to read at least I-picture data of the digital image information in the corresponding image information block, and jump destination information, which indicates an address of the next image information to be played back during said playback by a reproduction apparatus to read at least I-picture data,

wherein the reproduction apparatus, upon playback to read at least I-picture data, determines whether or not a current image information should be skipped, reads the video attribute data of the current image information block, reads at least I-picture data of the digital image information in the current image information block based on said picture arrangement or position information when it is determined that the current image information is not to be skipped, and jumps to the next image information block from which digital image information is to be reproduced in accordance with said jump destination information.

2. The optical disk according to claim 1, wherein said picture arrangement or position information indicates an arrangement or position of I-picture data in the corresponding image information block.

3. An apparatus for playing back video information from an optical disk, said optical disk having digital image information recorded thereon, the digital image information having n image information block including I-picture data for intra-frame coded pictures, P-picture data for predictive coded pictures, and B-picture data for bidirectionally predictive coded pictures, the image information block including a video attribute data region preceding the I-picture data, the P-picture data, and the B-picture data thereof, said video attribute data region containing picture arrangement or position information, which indicates an arrangement or position of coded pictures in the corresponding image information block, and jump destination information, said apparatus comprising:

a disk motor for rotating said disk; and

an optical head for emitting light onto said disk and receiving light reflected from said disk to reproduce information recorded thereon,

wherein said apparatus, upon playback to read at least I-picture data, determines whether or not a current image information should be skipped, reads the video attribute data of the current image information block, reads at least I-picture data of the digital image information in the current image information block based on said picture arrangement or position information when it is determined that the current image information is not to be skipped, and jumps to the next image information block from which digital image information is to be reproduced in accordance with said jump destination information.

4. The apparatus according to claim 3, wherein said picture arrangement or position information indicates an arrangement or position of I-picture data in the corresponding image information block.

5. A method of playing back video information from an optical disk, said optical disk having digital image information recorded thereon, the digital image information having an image information block including I-picture data for intra-frame coded pictures, P-picture data for predictive coded pictures, and B-picture data for bidirectionally predictive coded pictures, the image information block including a video attribute data region preceding the I-picture data, the P-picture data, and the B-picture data thereof, said video attribute data region containing picture arrangement or position information, which indicates an arrangement or position of coded pictures in the corresponding image information block, and jump destination information, said method comprising:

reading, during playback to read at least I-picture data, the video attribute data of the current image information block;

reading at least I-picture data of the digital image information in the current image information block based on said picture arrangement or position information; and

jumping to the next image information block from which digital image information is to be reproduced in accordance with said jump destination information,

wherein an apparatus, upon playback to read at least I-picture data, determines whether or not a current image information should be skipped, reads the video attribute data of the current image information block, reads at least I-picture data of the digital image information in the current image information block based on said picture arrangement or position information when it is determined that the current image information is not to be skipped, and jumps to the next image information block from which digital image information is to be reproduced in accordance with said jump destination information.

6. The method according to claim 5, wherein said picture arrangement or position information indicates an arrangement or position of I-picture data in the corresponding image information block.

7. A method of recording, on a optical disk, digital image information having an image information block including I-picture data for intra-frame coded pictures, P-picture data for predictive coded pictures, and B-picture data for bidirectionally predictive coded pictures, said method comprising:

disposing a video attribute data region of a corresponding image information block, preceding the I-picture data, P-picture data and the B-picture data in the image information block;

said disk including,

a plurality of recording sectors, each sector being associated with an address recorded on said optical disk, and

a plurality of tracks, each track including a plurality of recording sectors,

wherein said video attribute data region contains picture arrangement or position information, which indicates an arrangement or position of coded pictures in the corresponding image information block on accessing during playback to read at least I-picture data of the digital image information in the corresponding image information block, and jump destination information, which indicates an address of the next image information to be played back during said playback to read at least I-picture data, and

wherein, upon playback to read at least I-picture data, whether or not a current image information should be skipped is determined, the video attribute data of the current image information block is read, at least I-picture data of the digital image information in the current image information block based on said picture arrangement or position information is read when the current image information is determined not to be skipped, and a jump is performed to the next image information block from which digital image information is to be reproduced in accordance with said jump destination information.

8. The method according to claim 7, wherein said picture arrangement or position information indicates an arrangement or position of I-picture data in the image information block.

9. An apparatus for recording, on an optical disk, digital image information having an image information block including I-picture data for intra-frame coded pictures, P-picture data for predictive coded pictures, and B-picture data for bidirectionally predictive coded pictures, said apparatus comprising:

a unit for disposing a video attribute data region of a corresponding image information block, preceding the I-picture data, P-picture data and the B-picture data in the image information block;

said disk including,

a plurality of recording sectors, each sector being associated with an address recorded on said optical disk, and

a plurality of tracks, each track including a plurality of recording sectors,

wherein said video attribute data region contains picture arrangement or position information, which indicates an arrangement or position of coded pictures in the corresponding image information block on accessing during playback to read at least I-picture data of the digital image information in the corresponding image information block, and jump destination information, which indicates an address of the next image information to be played back during said playback to read at least I-picture data, and

wherein the apparatus, upon playback to read at least I-picture data, determines whether or not a current image information should be skipped, reads the video attribute data of the current image information block, reads at least I-picture data of the digital image information in the current image information block based on said picture arrangement or position information when it is determined that the current image information is not to be skipped, and jumps to the next image information block from which digital image information is to be reproduced in accordance with said jump destination information.

10. The apparatus according to claim 9, wherein said picture arrangement or position information indicates an arrangement or position of I-picture data in the image information block.