Telecommunications – Transmitter and receiver at separate stations – Single message via plural carrier wave transmission
Patent
1983-06-17
1986-06-17
Ng, Jin F.
Telecommunications
Transmitter and receiver at separate stations
Single message via plural carrier wave transmission
455 2, 455 67, 381 42, 360 13, 369 7, 34087011, H04B 100, H04B 700
Patent
active
045960410
ABSTRACT:
A participant-identification, recording and playback system includes a plurality of radio transmitters, preferably FM transmitters, which are tuned to respectively different center frequencies, and serve as respective wireless microphones assigned to respective participants. A radio receiver which is operatively associated with a recording and playback system is provided to receive signals from all of the wireless microphones, reduce these to a plurality of IF signal and record the same. The playback portion of the system includes a plurality of demodulators which allows one to recover all the audio signals on a selective basis for transcription. Circuitry is provided to identify the speakers and to indicate start and stop times.
REFERENCES:
patent: 2668283 (1954-02-01), Mullin
patent: 2904682 (1959-09-01), Rawlins
patent: 3058065 (1962-10-01), Freeman et al.
patent: 3122847 (1964-03-01), Redfield et al.
patent: 3587077 (1971-06-01), Kaldor et al.
patent: 3673331 (1972-06-01), Hair et al.
patent: 3879751 (1975-04-01), Gimelli
patent: 4109104 (1978-08-01), Toyoshima
patent: 4345334 (1982-08-01), Nordahl
Gaffey James R.
Ng Jin F.
LandOfFree
Participant-identification recording and playback system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Participant-identification recording and playback system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Participant-identification recording and playback system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2277014