G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 5/02 (2006.01) G11B 20/00 (2006.01) G11B 20/10 (2006.01) G11B 27/00 (2006.01) H04N 5/913 (2006.01)
Patent
CA 2191667
A synthesis signal which was reproduced from a reproducing apparatus and converted into an analog signal includes an analog information signal and a copy control code. The copy control code is modulated by a spread spectrum. A code reading unit of the recording apparatus extracts a copy control code by an inverse spread spectrum. A code changing unit changes the copy control code by a spread spectrum as necessary. An output signal of the code changing unit is converted into a digital signal. The digital signal is subjected to processes necessary for recording and is recorded to a recording medium.
Iwasaki Jun
Komatsubara Michimasa
Masaki Teruo
Mori Kaname
Naruse Tetsuya
Gowling Lafleur Henderson Llp
Sony Corporation
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