Apparatus and method for recording and reproducing digital signals by error-correcting-encoding of video and audio signals collectively
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsTohru Inoue, Ken Onishi, Masaru Kawabata
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Abstract
A digital VTR is provided for recording data for one-frame of video and audio signals, which have been error-correcting-encoded collectively, in a predetermined number of pieces of tracks during normal recording and for recording data for the video and audio signals, which have been error-correcting-encoded collectively, in one less than the predetermined number of tracks and data for the audio signal, which have been error-correcting-encoded during post-scoring, in the remaining one track exclusively for the post-scoring during post-scoring audio recording.
Claims26
A digital signal recording and reproducing apparatus for digitally recording a video signal and an audio signal, comprising:
- a video signal recording processor for receiving and processing the video signal;
- a first audio signal recording processor for processing a first portion of the audio signal;
- a second audio signal recording processor for processing a second portion of the audio signal and generating recording dummy data during normal recording;
- a first signal recording processor for integrating the video signal processed by said video signal recording processor and said first portion of the audio signal processed by said first audio signal processor, collectively assigning an error-correcting code to the integrated video signal and said first portion of the audio signal to generate first error-correcting-encoded data and recording said first error-correcting-encoded data in a first area of a recording medium;
- and
- a second signal recording processor for recording said recording dummy data received from said second audio signal recording processor or high-frequency component data extracted from the video signal by said video signal recording processor in a second area of said recording medium during normal recording, and error-correcting-encoding said second portion of the audio signal to generate second error-correcting-encoded data and recording said second error-correcting-encoded data in said second area of said recording medium during post-scoring recording.
A method for digitally recording and reproducing a video signal and an audio signal, comprising the steps of:
- (a) receiving and processing the video signal;
- (b) processing a first portion of the audio signal;
- (c) processing a second portion of the audio signal and generating recording dummy data during normal recording;
- (d) integrating the video signal processed at said step (a) and said first portion of the audio signal processed at said step (b);
- (e) collectively assigning an error-correcting code to the video signal and said first portion of the audio signal integrated at said step (d) for generating first error-correcting-encoded data;
- (f) recording said first error-correcting-encoded data in a first area of a recording medium;
- (g) recording said recording dummy data generated at said step (c) or high-frequency component data extracted from the video signal in a second area of said recording medium during normal recording;
- and
- (h) error-correcting-encoding said second portion of the audio signal to generate second error-correcting-encoded data and recording said second error-correcting-encoded data in said second area of said recording medium during post-scoring recording.
Dependencies are inferred from the claim text.