Title:
著作権保護情報の保護方法、情報信号再生方法、情報信号処理装置、情報信号再生装置および情報信号記録装置
Document Type and Number:
Japanese Patent JP4129610
Kind Code:
B2
Abstract:
At the time of performing signal processing of information signals to which copyright protection information has been added, signal processing which would make detection of copyright protection information difficult or impossible is restricted, based on the copyright protection information detected from the information signals. Thus, even in the event that the information signals pass through a device having a signal processing unit which would make detection of copyright protection information difficult or impossible, copyright protection can be performed in a sure and inexpensive manner.
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Inventors:
Akira Ogino
Application Number:
JP21683499A
Publication Date:
August 06, 2008
Filing Date:
July 30, 1999
Export Citation:
Assignee:
ソニー株式会社
International Classes:
G06F12/14; H04N1/387; G06F21/10; G06F21/16; G06T1/00; G09C5/00; G11B20/00; H04L9/00; H04N5/913; H04N5/85; H04N9/79
Domestic Patent References:
| JP10126614A | ||||
| JP2000083154A | ||||
| JP2000134465A |
Foreign References:
| WO2000051348A1 |
Attorney, Agent or Firm:
Masami Sato