JPS5850768U

JPS5850768U - ITV camera automatic temperature compensation circuit

Info

Publication number: JPS5850768U
Application number: JP14095881U
Authority: JP
Inventors: 哲男中村; 村川　慎一; 浩一向井
Original assignee: 三菱重工業株式会社
Priority date: 1981-09-22
Filing date: 1981-09-22
Publication date: 1983-04-06

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は公知のＩＴＶカメラを示すブロック線図、第２
図は第１図のＩＴＶカメラによるビデオ信号を示す線図
、第３図は第１図の自動感度補正回路の拡大図、第４図
は第１図における信号出力電流Ｓ１暗電流Ｎおよび周囲
温度との関係を示す線図、第５図は本考案の一実施例を
示す温度補償回路図、第６図は第５図の回路によるター
ゲット印加電圧と暗電流との関係を示す線図である！１・・・・・・光学レンズ、２・・・・・・ビジコン管
、３・・・・・・コイルアセンブリ、４・・・・・・ビ
ーム偏光回路、５・・・・・・ビデオ増幅回路、６・・
・・・・自動感度補正回路、７・・・・・・ストロボ光
源、８・・・・・・被写体、９・・・・・・サーミスタ
、１０・・・・・・温度補償回路。第３図第４図Fig. 1 is a block diagram showing a known ITV camera, Fig. 2 is a block diagram showing a known ITV camera;
The figure is a diagram showing the video signal from the ITV camera in Figure 1, Figure 3 is an enlarged view of the automatic sensitivity correction circuit in Figure 1, and Figure 4 is the signal output current S1 dark current N and ambient temperature in Figure 1. FIG. 5 is a temperature compensation circuit diagram showing an embodiment of the present invention, and FIG. 6 is a diagram showing the relationship between target applied voltage and dark current using the circuit of FIG. 5. ! 1... Optical lens, 2... Vidicon tube, 3... Coil assembly, 4... Beam polarization circuit, 5... Video amplification Circuit, 6...
... Automatic sensitivity correction circuit, 7 ... Strobe light source, 8 ... Subject, 9 ... Thermistor, 10 ... Temperature compensation circuit. Figure 3 Figure 4

Claims

[Scope of utility model registration request]

An automatic temperature compensation circuit for an ITV camera, characterized in that a negative resistance element is inserted into a control circuit that controls a target voltage of a vidicon of the ITV camera.