Specially formatted optical disk and method of playback

• US 7,593,623 B2
• Filed: 12/14/2005
• Issued: 09/22/2009
• Est. Priority Date: 06/24/1994
• Status: Expired due to Fees

• 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:
  US11/302,431
• Publication Number:
  US 20060098953A1
• Time in Patent Office: 1,378 Days
• Field of Search: 386/46, 386/68, 386/70, 386/95, 386/111, 386/112, 386/98, 386/125, 386/126
• US Class Current: 386/241
• 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 comprising I-, P- and B-pictures, wherein an address format is preformatted in front of the block of image information of said plurality of frames, and 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. With such a configuration, it is possible to increase the speed of fast playback, and realize smooth playback picture.

Claims

1. An optical disk storing digital image information recorded thereon, the digital image information comprising 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 bi-directionally predictive coded pictures, said disk comprising:

a track having the image information blocks recorded thereon;

wherein the image information block includes a data region preceding the picture data, said data region containing information representing the positional ordering arrangement of I-, P-, and B-pictures in the image information block and the total quantity of picture units in the image information block,

wherein a reproducing apparatus accesses said data region during playback operation and uses information from said data region for reproducing said digital image information.

2. An apparatus for playing back video information from an optical disk, said optical disk having digital image information recorded thereon, the digital image information comprising 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 bi-directionally predictive coded pictures, the image information block including a data region preceding the picture data, said data region containing first information for extracting the picture data included in the image information block, and second information for indicating total quantity of picture units included in the image information block, said apparatus comprising:

a motor for rotating said disk;

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

wherein said apparatus, during playback, reads the first information and the second information recorded on the data region corresponding to an image information block, reads at least I-picture data of the digital information in the corresponding image information block based on said first information and said second information.

3. A method for playing back video information from an optical disk, said optical disk having digital image information recorded thereon, the digital image information comprising 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 bi-directionally predictive coded pictures, the image information block including a data region preceding the picture data, said data region containing information representing the positional ordering arrangement of I-, P-, and B-pictures in the image information block and the total quantity of picture units included in the image information block, said method comprising:

reading the first information and the second information recorded on the data region corresponding to an image information block; and

reading at least I-picture data of the digital information in the corresponding image information block based on said first information and said second information.

4. An apparatus for recording, on an optical disk, digital image information comprising 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 bi-directionally predictive coded pictures, the image information block including a data region preceding the picture data, said data region containing information representing the positional ordering arrangement of I-, P-, and B-pictures in the image information block and the total quantity of picture units in the image information block, said apparatus comprising:

unit for disposing the data region of a corresponding image information block, preceding the picture data in the image information block.

5. A method for recording, on an optical disk, digital image information comprising 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 bi-directionally predictive coded pictures, the image information block including a data region preceding the picture data, said data region containing information representing the positional ordering arrangement of I-, P-, and B-pictures in the image information block and the total quantity of picture units in the image information block, said method comprising:

disposing the data region of a corresponding image information block, preceding the picture data in the image information block.