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JPS6414769A - Copyright information adding device - Google Patents

Copyright information adding device

Info

Publication number
JPS6414769A
JPS6414769A JP17024887A JP17024887A JPS6414769A JP S6414769 A JPS6414769 A JP S6414769A JP 17024887 A JP17024887 A JP 17024887A JP 17024887 A JP17024887 A JP 17024887A JP S6414769 A JPS6414769 A JP S6414769A
Authority
JP
Japan
Prior art keywords
information
signal
copyright information
false
music information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP17024887A
Other languages
Japanese (ja)
Inventor
Atsushi Osada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP17024887A priority Critical patent/JPS6414769A/en
Priority to DE3851724T priority patent/DE3851724T2/en
Priority to EP88306101A priority patent/EP0298691B1/en
Priority to US07/216,495 priority patent/US4979210A/en
Publication of JPS6414769A publication Critical patent/JPS6414769A/en
Priority to US07/544,276 priority patent/US5073925A/en
Pending legal-status Critical Current

Links

Landscapes

  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

PURPOSE:To prevent the generation of a lack of a signal having specific frequency in music information and a change of a phase by adding a false irregular noise to obtain copyright information. CONSTITUTION:The titled device is provided with an information adding means 3 for adding a false irregular noise to music information when a copyright owner records the music information in a recording medium. Namely, when the music information to which copyright information is added is inputted, the copyright information is added by an adder 304 and outputted. The copyright information is the false irregular noise and is formed by applying a clock from a clock signal generator 302 to an M-sequence generator 301 and converting an output signal from the generator 301 into an analog signal by a D/A converter 303. Consequently, a signal with the specific frequency is not lacked and a large change of a phase is not generated.
JP17024887A 1987-07-08 1987-07-08 Copyright information adding device Pending JPS6414769A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP17024887A JPS6414769A (en) 1987-07-08 1987-07-08 Copyright information adding device
DE3851724T DE3851724T2 (en) 1987-07-08 1988-07-05 Method and device for protecting copy signals.
EP88306101A EP0298691B1 (en) 1987-07-08 1988-07-05 Method and apparatus for protection of signal copy
US07/216,495 US4979210A (en) 1987-07-08 1988-07-08 Method and apparatus for protection of signal copy
US07/544,276 US5073925A (en) 1987-07-08 1990-06-13 Method and apparatus for the protection of signal copy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17024887A JPS6414769A (en) 1987-07-08 1987-07-08 Copyright information adding device

Publications (1)

Publication Number Publication Date
JPS6414769A true JPS6414769A (en) 1989-01-18

Family

ID=15901419

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17024887A Pending JPS6414769A (en) 1987-07-08 1987-07-08 Copyright information adding device

Country Status (1)

Country Link
JP (1) JPS6414769A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06129411A (en) * 1992-10-14 1994-05-10 Kito Corp Coupling device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06129411A (en) * 1992-10-14 1994-05-10 Kito Corp Coupling device

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