Method and apparatus for recording digital data on a recording medium by recording ODD-numbered and even-numbered data segments and compressed digital data in distinct recording regions

• US 5,539,586 A
• Filed: 03/16/1995
• Issued: 07/23/1996
• Est. Priority Date: 06/16/1992
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Okamoto, Ichiro, Inoue, Hajime
• Primary Examiner(s): Young, W. R.
• Application Number:
  US08/405,442
• Time in Patent Office: 495 Days
• Field of Search: 360/19.1, 360/32, 360/9.1, 360/27, 360/38.1, 360/53, 360/36.1, 360/36.2, 369/32
• US Class Current: 386/248
• CPC Class Codes: G11B 20/1208 for continuous data, e.g. digitised analog information signals, pulse code modulated [PCM] data
• CPC Class Codes: G11B 20/1809 by interleaving
• CPC Class Codes: G11B 20/1876 Interpolating methods
• CPC Class Codes: G11B 2020/10592 specifically adapted for recording or reproducing multichannel signals
• CPC Class Codes: G11B 2220/90 Tape-like record carriers
• CPC Class Codes: G11B 27/032 on tapes G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/036 Insert-editing
• CPC Class Codes: G11B 27/3027 used signal is digitally coded
• CPC Class Codes: G11B 27/3063 Subcodes
• CPC Class Codes: H04N 9/8066 with insertion of the PCM audio signals in the vertical blanking interval of the PCM video signal
• CPC Class Codes: H04N 9/888 for signals recorded by pulse code modulation

Abstract

Each track on a recording medium has a video area used for recording video and audio data, and an audio area used exclusively for recording audio data. The audio area has two regions used for recording odd-numbered audio data segments and even-numbered audio data segments, respectively. The data recorded in one of the two regions may be interleaved to further reduce vulnerability of the audio data to errors. Parity data for the audio data is recorded in a third region located between the first and second regions in each track. The audio data represents a left and a right channel. The left channel audio data is recorded in a first set of consecutive tracks, and the right channel audio data is recorded in a second set of consecutive tracks.

Claims

1. A method of recording digital data in a plurality of tracks on a recording medium, comprising the steps of:

respectively separating said digital data representing two channels and associated with a frame of video data into odd-numbered data segments and even-numbered data segments;

recording the odd-numbered data segments associated with a first channel of said frame in a first region on a first set of consecutive tracks;

recording the even-numbered data segments associated with said first channel of said frame in a second region on said first set of consecutive tracks, said second region being distinct from said first region;

recording the odd-numbered data segments associated with a second channel of said frame on a first region of a second set of consecutive tracks following said first set;

recording the even-numbered data segments associated with said second channel of said frame on a second region of said second set of consecutive tracks;

compressing said digital data representing two channels in order to produce compressed digital data;

compressing said video data in order to produce compressed video data; and

recording said compressed digital data representing two channels and said compressed video data in a third region of said first set of consecutive tracks and in a third region of said second set of consecutive tracks.

2. The recording method of claim 1, further comprising the step of recording at least one of parity data and auxiliary data in a fourth region on each track, said fourth region being located between said first and second regions.

3. The recording method of claim 2, further comprising the step of generating the parity data as a function of the digital data.

4. The recording method of claim 1, further comprising the step of interleaving one of the odd-numbered data segments and the even-numbered data segments before the data segments are recorded.

5. An apparatus for recording audio data for two channels and a frame of video data on tracks of a recording medium, comprising:

means for separating the audio data for each of the two channels associated with said frame of video data into odd-numbered data segments and even-numbered data segments;

means for generating parity data for a predetermined amount of the audio data for each of the two channels;

means for recording the odd-numbered data segments for one channel associated with said frame in a first region of each track in a first set of consecutive tracks, the even-numbered data segments for said one channel associated with said frame in a second region of each of the tracks in said first set, the odd-numbered data segments for the other channel associated with said frame in the first region of each track in a second set of consecutive tracks, the even-numbered data segments for said other channel associated with said frame in the second region of each of the tracks in said second set, and at least one of parity data or auxiliary data in respective third regions of each of the tracks in said first and second sets, the third region being between the first and second regions;

means for compressing said audio data in order to produce compressed audio data;

means for compressing said video data in order to produce compressed video data; and

means for recording said compressed audio data and said compressed video data in a fourth region of each of the tracks in said first set and in said second set.

6. The recording apparatus of claim 5, further comprising means for generating the parity data as a function of the audio data.

7. An apparatus for recording video data and two-channel audio data in tracks on a recording medium, comprising:

means for compressing the two-channel audio data;

means for compressing a frame of the video data;

means for recording the compressed video data and the compressed two-channel audio data in video and audio areas, respectively, of each of the tracks in a set of the tracks;

means for separating the audio data associated with said frame of the video data into odd-numbered data segments and even-numbered data segments for each of the two channels;

means for generating parity data for a predetermined amount of the audio data for each channel; and

means for recording the odd-numbered data segments for one channel associated with said frame in a first region of an audio area of each of the tracks in a first portion of consecutive tracks in said set of the tracks, the even-numbered data segments for said one channel associated with said frame in a second region of the audio area of each of the tracks in said first portion, the odd-numbered data segments for the other channel associated with said frame in the first region of the audio area of each of the tracks in a second portion of consecutive tracks in said set of the tracks, the even-numbered data segments for said other channel associated with said frame in the second region of the audio area in each of the tracks in said second portion, and at least one of parity data or auxiliary data in a third region of each of the tracks in said first and second portions, the third region being between said first and second regions.

8. A method of recording digital data in a plurality of tracks on a recording medium, comprising the steps of:

respectively separating said digital data representing two channels and associated with a frame of video data into odd-numbered data segments and even-numbered data segments;

interleaving one of the odd-numbered data segments and the even-numbered data segments before the data segments are recorded including rearranging the data in the one of the odd-numbered data segments and the even-numbered data segments, positioning placeholder data after a contiguous portion of the rearranged odd-numbered or even-numbered data segments, and substituting parity data for the placeholder data;

recording the odd-numbered data segments associated with a first channel of said frame in a first region on a first set of consecutive tracks;

recording the even-numbered data segments associated with said first channel of said frame in a second region on said first set of consecutive tracks, said second region being distinct from said first region

recording the odd-numbered data segments associated with a second channel of said frame on a first region of a second set of consecutive tracks following said first set; and

recording the even-numbered data segments associated with said second channel of said frame on a second region of said second set of consecutive tracks.

9. An apparatus for recording audio data for two channels on tracks of a recording medium, comprising:

means for separating the audio data for each of the two channels associated with a frame of video data into odd-numbered data segments and even-numbered data segments;

means for generating parity data for a predetermined amount of the audio data for each of the two channels;

means for rearranging the odd-numbered and even-numbered data segments for each of the two channels;

means for positioning placeholder data after a contiguous portion of the rearranged odd-numbered or even-numbered data segments;

means for substituting the parity data for the placeholder data; and

means for recording the odd-numbered data segments for one channel associated with said frame in a first region of each track in a first set of consecutive tracks, the even-numbered data segments for said one channel associated with said frame in a second region of each of the tracks in said first set, the odd-numbered data segments for the other channel associated with said frame in the first region of each track in a second set of consecutive tracks, the even-numbered data segments for said other channel associated with said frame in the second region of each of the tracks in said second set, and at least one of parity data or auxiliary data in respective third regions of each of the tracks in said first and second sets, the third region being between the first and second regions.