Digital signal processing apparatus

Details Digital signal processing apparatus Digital signal processing apparatus

2004-11-01

2008-12-30

Zand, Kambiz (Department: 2134)

Information security

Access control or authentication

Stand-alone

C707S793000, C380S044000

Reexamination Certificate

active

07472415

ABSTRACT:
If content is transmitted/received through a digital signal bus, protection of copyright causes a problem because of no deterioration in quality. Accordingly, authentication is required. The quantity of information to be processed is, however, so large that a long time is required for authentication. Accordingly, both achievement of handling property as in conventional analog connection and protection of copyrighted content without user's awareness become an object. The foregoing object can be achieved by authentication which is executed, for management of copyright, among apparatuses connected to the digital signal bus when the apparatuses are powered on or connected to the digital signal bus or when an input terminal connected to the digital signal bus is selected. The object can be further achieved by an encryption key shared among these apparatuses.

REFERENCES:
patent: 4531021 (1985-07-01), Bluestein et al.
patent: 4720859 (1988-01-01), Aaro et al.
patent: 5117458 (1992-05-01), Takaragi et al.
patent: 5999629 (1999-12-01), Heer et al.
patent: 6320829 (2001-11-01), Matsumoto et al.
patent: 6519701 (2003-02-01), Kawamura et al.
patent: 6570990 (2003-05-01), Kohn et al.
patent: 6721891 (2004-04-01), Borza
patent: 6802010 (2004-10-01), Kim et al.
patent: 6839851 (2005-01-01), Saitoh et al.
patent: 7325002 (2008-01-01), Zuk
patent: 2007/0300298 (2007-12-01), Goranson et al.
patent: 2008/0022388 (2008-01-01), Grewal et al.
patent: 714204 (1996-05-01), None
patent: 763936 (1997-03-01), None
patent: 0858183 (1998-08-01), None
patent: 874299 (1998-10-01), None
patent: 875813 (1998-11-01), None
patent: 875813 (1999-09-01), None
patent: 2214966 (1990-08-01), None
patent: 4302682 (1992-10-01), None
patent: 6261033 (1994-09-01), None
patent: 8137686 (1996-05-01), None
patent: 9179812 (1997-07-01), None
patent: 2002501708 (2002-01-01), None
patent: 9701902 (1997-01-01), None
patent: WO 97/28630 (1997-08-01), None
patent: WO 97/49057 (1997-12-01), None
patent: WO/98/02881 (1998-01-01), None
5C Digital Transmission Content Protection White Paper, Jul. 14, 1998.
Nikkei Electronics 1998, 3, 23, (No. 712), pp. 47-53.

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