Transmitter control apparatus

Details Transmitter control apparatus Transmitter control apparatus

1976-03-05

1977-03-22

Griffin, Robert L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340147LP, 340150, 340217, 340295, 340346, 343177, H04B 102

Patent

active

040139590

ABSTRACT:
A plurality of transmitters, such as radio transmitters, frequently share a common communication medium or path, such as a single radio frequency channel. In order to prevent two transmitters from simultaneously transmitting over the common medium, each transmitter is provided with control apparatus. This apparatus causes transmission in response to a start action and in the absence of any other transmission on the medium. The apparatus also produces a repeating signal at predetermined intervals in response to the start action, so that if there is a transmission on the medium, the repeating signal continues until such time as there is an absence of any transmission on the medium. The repeating signal then causes a transmission, and thereafter the repeating signal is stopped. The interval between repeating signals may be the same for each transmitter, but simultaneous transmission by two transmitters will not or is very unlikely to occur because start times are likely to be different.

REFERENCES:
patent: 2271305 (1942-01-01), Mullerheim
patent: 2662974 (1953-12-01), Dorff
patent: 2731622 (1956-01-01), Doremus et al.
patent: 3772667 (1973-11-01), Falck, Jr.
patent: 3825897 (1974-07-01), Lawton

Affiliated with

Also associated with

Rating

Transmitter control apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1958621