Dynamic information storage or retrieval – Combined independent audio systems – Radio
Patent
1982-06-21
1985-02-12
McElheny, Jr., Donald
Dynamic information storage or retrieval
Combined independent audio systems
Radio
3403111, 34082544, H04B 100
Patent
active
044995679
ABSTRACT:
A message recording controller for use with a radio frequency actuated paging subscriber system of the type wherein a plurality of portable pagers are each operative to receive a voice message on a time shared based with the other portable pagers. After transmission of an alert or beeper tone to actuate a specific portable pager, a message is transmitted. The message recording control system of the present invention includes first and second timers which have different timing intervals. The system operates a tape recorder which is turned off and on by the second timer. The alert tone causes the system to trigger both of the timers on at the same time thus permitting the transmitted message to be recorded on the tape recorder. The second timer, which has a time interval corresponding to the maximum allowed time for transmission of messages, times out and shuts off the tape recorder at the end of its timing interval. A short time thereafter, the first timer, which has a slightly greater timing interval than the second timer, times out and resets the message recording controller to its stand-by position. The system provides a locked in message record period during which time a message is being recorded and during which time false triggering of the system is precluded.
REFERENCES:
patent: 3699443 (1972-10-01), Weger
patent: 3723876 (1973-03-01), Seaborn, Jr.
patent: 4107611 (1978-08-01), Holcomb et al.
patent: 4197497 (1980-04-01), Phelps
patent: 4197526 (1980-04-01), Levine et al.
patent: 4356519 (1982-10-01), Cogdell, Jr.
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