Contents recording apparatus, recording medium, contents...

Details Contents recording apparatus, recording medium, contents... Contents recording apparatus, recording medium, contents...

2006-04-04

2006-04-04

Pesso, Thomas R. (Department: 2132)

Electrical computers and digital processing systems: support

System access control based on user identification by...

C713S152000, C713S152000, C380S044000, C380S277000, C380S283000

Reexamination Certificate

active

07024561

ABSTRACT:
A recording apparatus generates key information based at least on contents reproduction permission information, encrypts contents based on the key information, and records the encrypted contents and recording date/time information on a recording medium. A reproducing apparatus reads the encrypted contents and the recording date/time information from the recording medium, acquires reproduction date/time information on the encrypted contents and, based on the recording date/time information that was read, the reproduction date/time information, and reproduction permission limit information on the encrypted contents, generates contents reproduction permission information indicating that the encrypted contents maybe reproduced. The reproducing apparatus generates key information based at least on the contents reproduction permission information and decrypts the encrypted contents that were read.

REFERENCES:
patent: 5774058 (1998-06-01), Henry et al.
patent: 5924094 (1999-07-01), Sutter
patent: 6088717 (2000-07-01), Reed et al.
patent: 09-139930 (1997-05-01), None
patent: 10-341212 (1998-12-01), None
patent: 2000-149417 (2000-05-01), None
patent: WO 95/17059 (1995-06-01), None
patent: WO 98/27732 (1998-06-01), None
patent: WO 00/62476 (2000-10-01), None

Affiliated with

Also associated with

Rating

Contents recording apparatus, recording medium, contents... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Contents recording apparatus, recording medium, contents..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Contents recording apparatus, recording medium, contents... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3564378