Data transmitter and receiver

Details Data transmitter and receiver Data transmitter and receiver

1995-06-22

1998-07-28

Gregory, Bernarr E.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 9, 380 10, 380 21, 380 23, 380 25, 380 49, 380 50, H04L 900, H04L 908, H04L 932, H04N 7167

Patent

active

057871710

ABSTRACT:
A data transmitter capable of preventing illegal free reception of transmitted data by scrambling the same, and a data receiver adapted to descramble the received data properly despite any alteration of a scramble program. The data transmitter comprises a data source where predetermined data to be transmitted is stored; a circuit for generating a scramble program and control data; a circuit for scrambling the predetermined data in accordance with the scramble program; a circuit for generating a descramble program; and a circuit for transmitting the scrambled data, the descramble program and the control data to the data receiving terminal of each user or contractor. The control data includes a scramble key, and the scrambled data is transmitted via a satellite network or a CATV network, while the descramble program is transmitted via a telephone line. The data receiver is equipped with a circuit for descrambling the received data in accordance with the descramble program, and a circuit for compiling an intermediate code, which is included in the descramble program and is not dependent on any hardware, into a machine code.

REFERENCES:
patent: 4712239 (1987-12-01), Frezza et al.
patent: 4965825 (1990-10-01), Harvey et al.
patent: 5109414 (1992-04-01), Harvey et al.
patent: 5233654 (1993-08-01), Harvey et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-29389