Time lapse video recorder with auto monitoring function

Details Time lapse video recorder with auto monitoring function Time lapse video recorder with auto monitoring function

1984-10-18

1987-04-14

McElheny, Jr., Donald

Dynamic magnetic information storage or retrieval

Record editing

360 331, H04N 5782

Patent

active

046583190

ABSTRACT:
A time lapse video recorder includes auto monitoring circuitry for ensuring that proper recordings are being made. During the time between intermittent recording of fields by the time lapse recorder, the recorder is switched to a read mode of operation and the previously recorded field is monitored. If the monitored signal is of improper amplitude or frequency, an error detector activates an alarm. The invention may also be used with non-time lapse recorders to enable the quality of a recording to be checked without requiring rewinding of tape.

REFERENCES:
patent: 3761910 (1973-09-01), Vidovic
patent: 4007490 (1977-02-01), Shoda
patent: 4532558 (1985-07-01), Oota et al.

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