Television – Special applications – Observation of or from a specific location
Patent
1995-03-20
1998-04-14
Chin, Tommy P.
Television
Special applications
Observation of or from a specific location
348370, H04N 718
Patent
active
057398470
ABSTRACT:
Infrared radiation from a light source such as a laser diode illuminates the field of view of a surveillance camera. The amount of illumination is varied in intervals, which may for example, be about 3/4 of a second, by varying the power applied to the light source. The radiation may emanate from optical fibers surrounding a camera lens, or through other ports. The power to the laser diode may be altered in response to background light sensed by a photo cell.
REFERENCES:
patent: 4027334 (1977-05-01), Grant
patent: 4707595 (1987-11-01), Meyers
patent: 4782386 (1988-11-01), Ams et al.
patent: 4866285 (1989-09-01), Simms
patent: 4991183 (1991-02-01), Meyers
patent: 5061997 (1991-10-01), Rea et al.
patent: 5130737 (1992-07-01), Azuma et al.
patent: 5550641 (1996-08-01), Shashua et al.
Jones Ronald B.
Lang Paul D.
Tranchita Charles J.
Anderson Terry J.
Au A.
Chin Tommy P.
Hoch Jr. Karl J.
Northrop Grumman Corporation
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