Method for appending a signal with ciphered playback mode inform

Details Method for appending a signal with ciphered playback mode inform Method for appending a signal with ciphered playback mode inform

1996-08-08

1999-12-28

Patel, Harshad

Cryptography

Cryptanalysis

380 4, 380 5, 360 60, 360 27, G11B 2328, G11B 1504, G11B 502

Patent

active

060091703

ABSTRACT:
A signal transmission method applicable to prevention of modification or alteration of the playback mode information, such as copying management information or charging information. The playback mode information form a terminal 15P is data-converted for ciphering by a playback mode information appendage circuit 14 in a header appendage circuit 13 responsive to the key information from a terminal 15K and the resulting information comprised of the data and the playback mode information is outputted. The reproducing side effects data conversion on the ciphered playback mode information for deciphering, by a playback mode information detection circuit 26 in a header separation circuit 25, using the key information from a terminal 27K, for taking out the original playback mode information at a terminal 27P.

REFERENCES:
patent: 5057947 (1991-10-01), Shimada
patent: 5185792 (1993-02-01), Shimada et al.
patent: 5315448 (1994-05-01), Ryan
patent: 5418853 (1995-05-01), Kanota et al.
patent: 5453968 (1995-09-01), Veldhuis et al.
patent: 5570339 (1996-10-01), Nagano
patent: 5673357 (1997-09-01), Shima
patent: 5689559 (1997-11-01), Park
patent: 5719937 (1998-02-01), Warren et al.
patent: 5761301 (1998-06-01), Oshima et al.
patent: 5799081 (1998-08-01), Kim et al.

Affiliated with

Also associated with

Rating

Method for appending a signal with ciphered playback mode inform does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for appending a signal with ciphered playback mode inform, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for appending a signal with ciphered playback mode inform will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2387674