Data reproduction apparatus and data reproduction module

Details Data reproduction apparatus and data reproduction module Data reproduction apparatus and data reproduction module

2007-04-10

2007-04-10

Revak, Christopher (Department: 2131)

Cryptography

Video cryptography

Copy protection or prevention

C380S281000, C380S217000, C380S237000, C380S250000, C705S057000, C713S165000, C713S166000, C713S167000, C713S168000

Reexamination Certificate

active

10069118

ABSTRACT:
A cellular phone has distributed encrypted content data and an encrypted content key stored in a memory. The encrypted content key data read out from the memory is decrypted by a decryption processing unit using key data Kp stored in a Kp hold unit, and then applied to a audio reproduction module. A decryption processing unit decrypts encrypted content data read out from the memory using a content key Kc extracted by the decryption processing unit to reproduce content data Dc.

REFERENCES:
patent: 5917912 (1999-06-01), Ginter et al.
patent: 6131162 (2000-10-01), Yoshiura et al.
patent: 6226618 (2001-05-01), Downs et al.
patent: 6697944 (2004-02-01), Jones et al.
patent: 6728379 (2004-04-01), Ishibashi et al.
patent: 6857071 (2005-02-01), Nakae
patent: 0 817 185 (1998-01-01), None
patent: 62-053042 (1987-09-01), None
patent: 05-257816 (1993-10-01), None
patent: 08-069419 (1996-03-01), None
patent: 08-186667 (1996-07-01), None
patent: 9-26798 (1997-01-01), None
patent: 9-326166 (1997-12-01), None
patent: 10-40172 (1998-02-01), None
patent: 10-136123 (1998-05-01), None
patent: 11-328033 (1999-11-01), None
Partial translation of Nikkei Electronics, No. 739, pp. 49-53, Mar. 22, 1999. See PCT search rpt.
Partial translation of Nikkei Electronics, No. 728, pp. 31-32, Oct. 19, 1998. See PCT search rpt.
Partial translation of Nikkei Electronics, No. 731, pp. 29-30, Nov. 30, 1998. See PCT search rpt.
Notice of Ground of Rejection Patent Application No. 2001-520399 Mailed Jul. 04, 2006.
“Ongaku Haishin Mattanashi”, Nikkei Electronics No. 738, Nikkei Business Publications Inc., Mar. 8, 1999, pp. 87-111.

Affiliated with

Also associated with

Rating

Data reproduction apparatus and data reproduction module does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data reproduction apparatus and data reproduction module, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data reproduction apparatus and data reproduction module will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3751396