0778566-A2 is referenced by 42 patents and cites 5 patents.

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.

Title
Apparatus and method for synthesising information signal and reproduction control signal and information signal recording apparatus
Application Number
EP19960308568 19961127
Publication Number
0778566 (A2)
Application Date
November 27, 1996
Publication Date
June 11, 1997
Inventor
Masaki Teruo
JP
Iwasaki Jun
JP
Mori Kaname
JP
Komatsubara Michimasa
JP
Naruse Tetsuya
JP
Assignee
Sony
JP
IPC
G11B 20/00
H04N 07/167
H04N 05/92
H04N 05/913
H04N 05/91
H04N 05/781
G11B 20/10
G11B 20/00
H04N 05/765
H04N 07/167
H04N 05/92
H04N 05/913
H04N 05/91
H04N 05/781
G11B 20/10
G11B 20/00
H04N 05/765
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