Transmitters and systems for tone-in-band transmission

Details Transmitters and systems for tone-in-band transmission Transmitters and systems for tone-in-band transmission

1985-11-15

1988-12-20

Safourek, Benedict V.

Telecommunications

Transmitter and receiver at separate stations

Inverted sideband

375 43, 455 71, 455118, H04B 176

Patent

active

047929855

ABSTRACT:
In those transparent tone-in-band systems which employ a single oscillator in the transmitter to generate a frequency notch between upper and lower portions of a band which is to be transmitted, there is not complete freedom to choose the width of the notch. In the present invention which also uses a single transmitter oscillator, one portion of the band transmitted is selected using a filter. A mixer is used to change the frequency of the input band in a way which does not allow the lower sideband to "fold" back at zero frequency and interfere with the lower transmitted portion. A further filter selects the other portion for transmission from the output of the mixer.

REFERENCES:
patent: 1750688 (1930-03-01), Potter
patent: 4195202 (1980-03-01), McCalmont
IEEE Conference on Communication Equipment Systems, Apr. 20-22, 1982, pp. 121-126, McGeehan, Bateman and Burrows.
Simultaneous Speech and High Speed Data Transmission over a Voice Grade Channel by B. Kaufman-ICC June 1983, pp. 1644-1646.
The Use of "Transparent" Tone-In-Band (TTIB) and Feedforward Signal Regeneration (FSSR) in Single Sideband Mobile Communication Systems, IEE Conf. Communications, pp. 121-126.

Affiliated with

Also associated with

Rating

Transmitters and systems for tone-in-band transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Transmitters and systems for tone-in-band transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transmitters and systems for tone-in-band transmission will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1913925