JPH0340135U

JPH0340135U -

Info

Publication number: JPH0340135U
Application number: JP9730889U
Authority: JP
Priority date: 1989-08-21
Filing date: 1989-08-21
Publication date: 1991-04-17

Description

[Brief explanation of drawings]

第１図ないし第４図は本考案に係る車両用後方
監視系統の撮像切換え装置の一実施例を示し、第
１図は撮像部を車両へ配設した状態の説明図、第
２図は電気回路図、第３図は第２図における撮像
信号切換え回路の作動を示すタイムチヤート、第
４図は第２図における受像部に車両後方の状況を
映し出した映像の説明図である。１……第１撮像部、２……第２撮像部、３……
車両、５……ドライバ回路、６……撮像信号切換
え回路、７……単安定マルチバイブレータ、８，
９，１４，１５……第１、第２、第３、第４アナ
ログスイツチ、１０……後退操作検知スイツチ、
１１……ブレーキスイツチ、１２……画面切換え
回路、１８……映像処理部、１９……受像部。 1 to 4 show an embodiment of the imaging switching device for a rear monitoring system for a vehicle according to the present invention, FIG. 3 is a time chart showing the operation of the imaging signal switching circuit in FIG. 2, and FIG. 4 is an explanatory diagram of an image showing the situation behind the vehicle on the image receiving section in FIG. 2. 1...First imaging unit, 2...Second imaging unit, 3...
Vehicle, 5... Driver circuit, 6... Imaging signal switching circuit, 7... Monostable multivibrator, 8,
9, 14, 15...first, second, third, fourth analog switch, 10...reverse operation detection switch,
11... Brake switch, 12... Screen switching circuit, 18... Video processing section, 19... Image receiving section.

Claims

[Scope of Claim for Utility Model Registration] (1) A first imaging unit disposed near the rear end of the vehicle that images the situation behind the vehicle in a predetermined optical axis direction and outputs it as a first imaging signal; a second imaging section disposed near the rear roof in a direction whose optical axis intersects with the optical axis of the first imaging section, which images the situation behind the vehicle and outputs it as a second imaging signal; A driver circuit that outputs a drive signal such as a vertical synchronization signal in order to drive the imaging unit for imaging, and a driver circuit that outputs a drive signal such as a vertical synchronization signal;
an image signal switching circuit that switches from the first image signal to the first image signal and transmits the first image signal; and a video processing section that converts the image signal from the image signal switch circuit into a video processing signal and outputs the signal to the image receiving section. An imaging switching device for a rear monitoring system for a vehicle, characterized by: (2) In the imaging switching device for a rear monitoring system for a vehicle as set forth in claim 1 of the utility model registration claim, there is provided a reverse operation detection switch that responds to the vehicle reverse operation of the shift lever, and a brake switch that responds to the brake pedal depression operation. , further comprising a screen switching circuit connected to the output side of the imaging signal switching circuit and transmitting the imaging signal of the imaging signal switching circuit to the video processing unit in accordance with signals from both switches. Image switching device for vehicle rear monitoring system.