Patent EP0778566A2 successfully refreshed from Google Patents.
EP0778566A2
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EP
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Apparatus and method for synthesising information signal and reproduction control signal and information signal recording apparatus
Assignee: Sony Corp
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Filing: 1996-11-27
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Granted: —
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Expires: 2016-11-27
Abstract
Abstract 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. <IMAGE>
Inventors
- 👤 Tetsuya Naruse
- 👤 Michimasa Komatsubara
- 👤 Kaname Mori
- 👤 Jun Iwasaki
- 👤 Teruo Masaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 13:09
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/00086; G11B20/00884; G11B20/00913; G11B20/10527; H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/913; H04N2005/91307; H04N2005/91314; H04N2005/91321; H04N2005/91328; H04N2005/9135; H04N2005/91357; H04N2005/91371
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
88 words
An information signal synthesizing apparatus comprising: an information source for generating a main information signal; a sub information source for generating a sub information signal; a spread spectrum circuit for performing a spread spectrum process to said sub information signal which is supplied from said sub information source; and a synthesizer for forming a synthesis information signal by synthesizing said sub information signal which is supplied from said spread spectrum circuit and was subjected to said spread spectrum process and said main information signal from said information source.
Claim 2
Dependent Claim
31 words
An apparatus according to claim 1, wherein said sub information signal is a copy control signal to control a permission and an inhibition of a copy of said main information signal.
Claim 3
Dependent Claim
34 words
An information signal recording apparatus comprising: an information signal synthesising apparatus according to claim 1 or 2; and a recorder for recording said synthesis information signal formed by said synthesizer to a recording medium.
Claim 4
Dependent Claim
36 words
An apparatus according to claim 3, further having an analog/digital converter for converting said synthesis signal formed by said synthesizer into a digital signal, and wherein said recorder records said synthesis signal as a digital signal.
Claim 5
Dependent Claim
122 words
An information signal recording apparatus comprising: an information reading circuit to which an analog synthesis signal of a main information signal and a copy control signal that was spread spectrum processed is supplied and which executes an inverse spread spectrum processed to said spread spectrum processed copy control signal, thereby reproducing said copy control signal; an analog/digital converter for converting said synthesis signal into a digital signal; and a recorder to which the digital output signal of said analog digital converter and said copy control signal from said information reading circuit are supplied and in which a permission and an inhibition of a recording of said digital output signal to a recording medium are controlled in accordance with said copy control signal.
Claim 6
Dependent Claim
138 words
An information signal synthesizing apparatus comprising: an information reading circuit to which a synthesis signal of a main information signal and a sub information signal which was spread spectrum processed is supplied and which executes an inverse spread spectrum process to said spread spectrum processed sub information signal and reproduces said sub information signal and outputs said main information signal; a sub information signal control circuit for changing said sub information signal which is supplied from said information reading circuit, thereby forming a changed sub information signal; and a synthesizer to which said changed sub information signal from said sub information signal control circuit and said main information signal from said information reading circuit are supplied and which forms a synthesis signal of said changed sub information signal which was spread spectrum processed and said main information signal.
Claim 7
Dependent Claim
168 words
An information signal recording apparatus comprising: an information reading circuit to which a synthesis signal of a main information signal and a spread spectrum processed copy control signal is supplied and which executes an inverse spread spectrum process to said spread spectrum processed copy control signal, reproduces said copy control signal, and outputs said main information signal; a copy control signal control circuit for changing said copy control signal which is supplied from said reading circuit, thereby forming a changed sub information signal; a synthesizer to which said changed sub information signal from said sub information signal control circuit and said main information signal from said information reading circuit are supplied and which forms a synthesis signal of said changed sub information signal which was spread spectrum processed and said main information signal; and a recorder in which a permission and an inhibition of a recording of said synthesis information signal formed by said synthesizer to a recording medium are controlled in accordance with said copy control signal.
Claim 8
Dependent Claim
55 words
An information signal synthesizing method of comprising the steps of: generating an analog main information signal; generating a sub information signal; executing a spread spectrum process to said sub information signal; and forming a synthesis information signal by synthesizing said spread spectrum processed sub information signal and said main information signal from said information source.
Claim 9
Dependent Claim
81 words
An information signal recording method comprising the steps of: executing an inverse spread spectrum process to a spread spectrum processed copy control signal from an analog synthesis signal of a main information signal and said spread spectrum processed copy control signal and reproducing said copy control signal; converting said synthesis signal into a digital signal; and controlling a permission and an inhibition of a recording of said digital output signal to a recording medium in accordance with said copy control signal.
Claim 10
Dependent Claim
94 words
An information signal synthesizing method comprising the steps of: an inverse spread spectrum process to a spread spectrum processed sub information signal from a synthesis signal of a main information signal and said spread spectrum processed sub information signal, reproducing said sub information signal, and outputting said main information signal; changing said sub information signal and forming a changed sub information signal; and forming a synthesis signal of said changed sub information signal which was spread spectrum processed and said main information signal from said changed sub information signal and said main information signal.
References Cited (Backward Citations)
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