CCTV system having improved detection function and detecting met

Details CCTV system having improved detection function and detecting met CCTV system having improved detection function and detecting met

1995-12-20

1997-09-23

Britton, Howard W.

Television

Special applications

Observation of or from a specific location

348143, 348152, 348154, 348159, 34082515, 34082527, 364146, 364188, H04N 718

Patent

active

056710097

ABSTRACT:
A closed circuit television (CCTV) system with an improved detection function and a detecting method wherein, a number of camera signals, generated by multiple monitoring cameras, are recorded on a single recording medium such as a magnetic tape, corresponding ID codes are generated in accordance with predetermined physical event and time-of-day conditions. Such physical conditions include events such as video loss, fire alarms, break-ins, and so forth. The ID codes are recorded during vertical blanking periods of the camera signals, and are detected during reproduction of previously recorded video signals. The ID codes detected are compared with a user-designated value indicative of a physical event and time-of-day condition to be detected, so that an ensuing comparison match facilitates non-sequential reproduction of the camera signals corresponding to the ID codes and effectively reduces the amount of time to detect an event recorded on a recording medium, and increases detection efficiency.

REFERENCES:
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patent: 5237408 (1993-08-01), Blum et al.
patent: 5239428 (1993-08-01), Nishida et al.
patent: 5396284 (1995-03-01), Freeman
patent: 5526133 (1996-06-01), Pfaff

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