Digital voice privacy apparatus and method

Details Digital voice privacy apparatus and method Digital voice privacy apparatus and method

1994-09-30

1996-04-09

Bost, Dwayne D.

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including fiber optic link within telephone network

455 331, 380 28, H04Q 738

Patent

active

055068898

ABSTRACT:
A cellular voice privacy arrangement includes a digital privacy unit which is part of each subscriber's fixed equipment. The digital privacy unit includes suitable analog to digital and digital to analog converters. A vocoder, digital signal processor and modem provide the privacy. The identification numbers of each terminal (phone) are exclusive-ORed to form a scramble variable. Vocoder data (voice coded information) is exclusive-ORed with the scramble variable to provided scrambled data for transmission.

REFERENCES:
patent: 4182933 (1980-01-01), Rosenblum
patent: 4972479 (1990-11-01), Tobias
patent: 5060266 (1991-10-01), Dent
patent: 5150401 (1992-09-01), Ashby, III et al.
patent: 5305384 (1994-04-01), Ashby et al.

Affiliated with

Also associated with

Rating

Digital voice privacy apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital voice privacy apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital voice privacy apparatus and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-144580