Television – Special applications – Observation of or from a specific location
Patent
1998-05-06
2000-08-15
Kelley, Chris S.
Television
Special applications
Observation of or from a specific location
348169, H04N 718
Patent
active
061044288
ABSTRACT:
An addressable video camera has an ability to be assigned an address, that allows a security monitoring system utilizing a plurality of such addressable video cameras to be connected to the security guard room via a single cable. The addressable video camera includes the following: a video imaging device for generating a video signal; an amplifier for amplifying the output video signal; a switch connected between the amplifier and the input/output port of the addressable video camera; an address setting unit for presetting an address value to the addressable video camera; a sync signal detector which is capable of generating a demodulation enable signal in response to the received video control signal; a demodulator for demodulating the address signal in the video control signal; and a microprocessor capable of comparing the demodulated address data with the preset address value. If these match, the switch is turned to the conducting state and the video-imaging device is switched to active operation. It then outputs the video signal. Since the signal transmission between the central control unit and the plurality of addressable video cameras can be carried out over one single cable, the arrangement and handling of the security monitoring system is considerably simplified.
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Hsu Chien-Hung
Lu Chung-Chien
Tang Alex
Kelley Chris S.
Philippe Gims
United Microelectronics Corp.
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