Data recording medium

Details Data recording medium Data recording medium

1996-06-27

1998-09-01

Cain, David C.

Cryptography

Cryptanalysis

H04L 900

Patent

active

058021744

ABSTRACT:
An optical disk D is composed of a first recording layer L.sub.1 and a second recording layer L.sub.2 each for two recording formats. Encrypted data is recorded on the first recording layer L.sub.1. Encrypting key data is recorded on the second recording layer L.sub.2. The encrypting key data is used for decoding the encrypted data. This recording makes easy reproduction of the recorded data quite difficult. If data recorded on a bit-formed portion may be reproduced by any means, the data signal recorded on the optical disk cannot be easily reproduced.

REFERENCES:
patent: 5150339 (1992-09-01), Ueda et al.
patent: 5371792 (1994-12-01), Asai et al.
patent: 5596639 (1997-01-01), Kikinis

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-278118