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US 4,862,292 AGranted
Digital information signal recording apparatus
AssigneeCanon Kabushiki Kaisha
InventorsMasahiko Enari, Katsuji Yoshimura, Akio Aoki, Shinichi Yamashita, Makoto Shimokoriyama, Motokazu Kashida, Tetsuya Shimizu, Yoshiki Ishii, Akio Fujii
Life of this patent
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Abstract
A digital information signal recording apparatus has a first mode in which a digital information signal of one channel is recorded on a recording medium at a given bit rate and a second mode in which digital information signals of n channels (n: an integer which is at least 2) are simultaneously recorded on the recording medium at a bit rate which is 1/n of the given bit rate.
Claims23
A digital information signal recording apparatus comprising:
- (a) first signal generating means for generating a digital information signal of one channel having a given bit rate;
- (b) second signal generating means for generating digital information signals of n channels having a bit rate which is 1/n of said given bit rate, n being an integer which is at least 2;
- (c) composition means for combining said digital information signals of n channels generated by said second signal generating means to generate a composite information signal of said given bit rate;
- (d) selection means for selectively outputting one of said composite digital information signal and said digital information signal of one channel generated by said first signal generating means;
- and
- (e) recording means for recording on a recording medium a digital signal output from said selection means.
3 more elements
A digital information signal recording apparatus comprising:
- (a) first signal generating means for generating a digital information signal of one channel having a given bit rate;
- (b) second signal generating means for generating digital information signals of n channels having said given bit rate, n being an integer which is at least 2;
- (c) composition means for combining said digital information signals of n channels generated by said second signal generating means to generate a composite digital information signal having a bit rate which is n times as much as said given bit rate;
- (d) selection means for selectively outputting one of said composite digital information signal and, said digital information signal of one channel generated by said first signal generating means;
- and
- (e) recording means for recording on a recording medium a digital signal output from said selection means.
3 more elements
A digital information signal recording apparatus comprising:
- (a) first input means for receiving a first digital information signal having a given bit rate;
- (b) second input means for receiving a second digital information signal having a bit rate which is n times as high as said given bit rate, n being an integer which is at least 2;
- (c) distributing means for distributing said second digital information signal received by said second input means into n channels;
- (d) data compressing means for compressing to 1/n the amount of data of each of said digital information signals of n channels obtained by said distributing means;
- (e) composition means for combining said digital information signals of n channels compressed by said data compressing means to generate a composite digital information signal of said given bit rate;
- (f) selection means for selectively outputting one of said composite digital information signal and said digital information signal of one channel received by said first input means;
- and
- (g) recording means for recording on a recording medium a digital signal output from said selection means.
5 more elements
A digital information signal recording apparatus comprising:
- (a) first input means for receiving digital information signals of n channels having a given bit rate;
- (b) second input means for receiving a second digital information signal having a bit rate which is n times as high as said given bit rate, n being an integer which is at least 2;
- (c) distributing means for distributing said second digital information signal received by said second input means to n channels;
- (d) selection means for selectively outputting one of said digital information signals of n channels obtained by said distributing means and said digital information signals of n channels received by said first input means;
- (e) composition means for combining digital information signals of n channels output from said selection means to generate a composite digital information signal of said given bit rate;
- and
- (f) recording means for recording said composite digital information signal on a recording medium.
4 more elements
Dependencies are inferred from the claim text.