Method of and system for transmitting two different messages on

Details Method of and system for transmitting two different messages on Method of and system for transmitting two different messages on

1978-12-19

1980-12-09

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 20, 370 76, 370100, 370 74, H04J 900, H04J 1100

Patent

active

042388490

ABSTRACT:
In a radio broadcoast channel, an additional message is superimposed on the normal message so as to be inaudible to the listener. To accomplish this, the additional message, consisting of digital signals, is modulated on a subcarrier lying in the ear-physiological masking range of the normal message. During breaks and very quiet intervals of the normal transmission, the signal transmission is interrupted because no masking occurs during those times. To make this possible, the transmission of the normal message is delayed by at least one signal length.

REFERENCES:
patent: 3261922 (1966-07-01), Edson et al.
patent: 3426151 (1969-02-01), Tygart
patent: 3710257 (1973-01-01), Low et al.
patent: 3917906 (1975-11-01), Johnson et al.

Affiliated with

Also associated with

Rating

Method of and system for transmitting two different messages on 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 of and system for transmitting two different messages on , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of and system for transmitting two different messages on will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2284312