JPH032786U

JPH032786U -

Info

Publication number: JPH032786U
Application number: JP6292989U
Authority: JP
Priority date: 1989-05-30
Filing date: 1989-05-30
Publication date: 1991-01-11

Description

[Brief explanation of drawings]

第１図は本考案の一実施例に係る監視カメラ装
置の回路構成を示す図、第２図は感知領域の設定
方式を示す図、第３図はタイムチヤートである。２……カメラ部、８……モニター部、１０……
同期分離回路、１２……ウインドウ設定回路、２
４……第１積分ホールド回路、２６……第２積分
ホールド回路、２８……差動増幅器、３０……タ
イミング信号発生回路、３８……ウインドウコン
パレータ、４８……報知回路、５０……第１の基
準電圧発生器、５２……第２の基準電圧発生器、
５４……第３積分ホールド回路、５６……加算回
路。 FIG. 1 is a diagram showing a circuit configuration of a surveillance camera device according to an embodiment of the present invention, FIG. 2 is a diagram showing a sensing area setting method, and FIG. 3 is a time chart. 2...Camera section, 8...Monitor section, 10...
Synchronous separation circuit, 12...Window setting circuit, 2
4...First integral hold circuit, 26... Second integral hold circuit, 28... Differential amplifier, 30... Timing signal generation circuit, 38... Window comparator, 48... Notification circuit, 50... First a reference voltage generator, 52... a second reference voltage generator,
54...Third integral hold circuit, 56...Addition circuit.

Claims

[Claims for Utility Model Registration] A camera unit that outputs a video signal and a synchronization signal; a monitor unit that displays an image using the video signal and synchronization signal from the camera unit; and a vertical synchronization unit that inputs signals from the camera unit. a sync separation circuit that outputs a composite sync signal that is a mixture of the signal, a vertical sync signal, and a horizontal sync signal; and a sync separation circuit that outputs a composite sync signal that is a mixture of the vertical sync signal and the horizontal sync signal; a window setting circuit for setting a region; first and second integral hold circuits for integrating and holding a video signal corresponding to the specific region set by the window setting circuit; a differential amplifier capable of outputting the difference between the values held by the hold circuit; and a differential amplifier capable of outputting the difference between the values held by the hold circuit; a second timing signal that outputs a first timing signal that resets and holds the first and second integral hold circuits alternately every several fields, and operates the differential amplifier following generation of the first timing signal; a timing signal generation circuit that outputs a first reference voltage, a first reference voltage generator that generates a first reference voltage, and a differential voltage output from the differential amplifier that exceeds a voltage range determined by the first reference voltage. A second reference voltage generator that generates a second reference voltage in a surveillance camera device comprising: a window comparator that sometimes outputs a detection signal; and an alarm circuit that issues an alarm in response to generation of the detection signal of the window comparator. a third integral hold circuit that integrates and holds the signal from the second reference voltage generator in response to the first timing signal from the timing signal generating circuit; A surveillance camera device comprising: an addition circuit that adds a hold value and a first reference voltage from the first reference signal generator and supplies the result to the window comparator.