JPS6079889A - On-vehicle television receiver - Google Patents

Abstract

PURPOSE:To attain ease of viewing of a TV broadcast by inserting a scale representing the relation of a position only at confirmation in a backward direction in an on-vehicle television receiver. CONSTITUTION:The TV broadcst is inputted from a terminal 1 and the image pickup signal of a rear confirming television camera is inputted from a terminal 2. In selecting the transmission gear of a car to the backward position, an ex- citing current flows to a relay 9 and contacts 10, 11 are changed over. The image pickup signal of a television camera for confirming backward traffic is outputted via the contact 10, video circuits 3, 4, 5, and a video input switching circuit 6. A power source is made to the circuit 6 from a terminal 8 through the contact 11 at the same time. Then the output of a signal generator 7 for scale is superimposed on the video signal. Thus, the scale representing the relation of the position with the car is inserted only at the confirmation of backward traffic.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle-mounted television receiver that is combined with a rear-view television camera installed in a vehicle.

Generally, when using this frame, it is necessary to display the positional relationship with the vehicle on the screen when the rearward-confirmation television camera is photographed in 1aII, but conventionally, a scale showing the positional relationship with the vehicle was fixed on the surface of the cathode ray tube. Because of this, even if you try to display TV broadcast images or playback images at times other than when checking the rear, the scale becomes disturbing and the screen becomes difficult to view.
Therefore, the present invention has drawbacks such as being effectively used only for rear confirmation, and cannot be used as a normal television receiver for displaying television broadcast images or reproduced images. Eliminate all the drawbacks, rear 4
The purpose is to be able to use it as a monitor TV receiver during the ``1R edict, and as a regular TV receiver when not checking the rear, and to provide fc car-mounted TV image reception (IL-). .

This invention will be explained with reference to the embodiments shown in all the drawings. In Fig. 1, (1) is an input terminal for television broadcast @ or reproduction signal, and (2) is a rear checker (not shown) installed at the rear of the vehicle. TV camera shooting signal input terminal, (3
) is a video amplifier circuit, (4) is a sync separation circuit, (5) is a color signal processing circuit, (6) is a video input switching circuit, (7) is a scale signal generator, (8) is a power input terminal, (9) is a relay in which a current flows through the coil when the transmission gear (not shown) of the vehicle is placed in the pack, and when the relay (9) is not energized, the contact αOfill is in the upper position shown, and the relay (9) is Contact ucpan is adapted to switch to the lower position when energized.

In the above-mentioned in-vehicle television receiver, when the vehicle's transmission gear is not engaged, the contact point (li 111) is in the position shown, so that the TV broadcast signal range or playback signal is transmitted from the terminal (1) to the contact point (111). 1170 video increase ll'lif circuit (
3), synchronous separation circuit (4) and color signal processing circuit (5)
The video input switching circuit (6) is then sequentially processed by the power input terminal (8
) is not applied, so the scale signal generator (7) is not applied.
), all inputs are turned off, so only the TV broadcast signal or playback signal input from the color signal processing circuit (5) passes through the video input switching circuit (6) and is output and displayed on the screen. On the other hand, when the vehicle's transmission gear is placed in the pack, the contact cLOW switches to the lower position, so the photographic signal from the rear confirmation TV camera is transmitted from terminal (2) through contact aOt to the video amplification circuit ( 3), is sequentially processed by the synchronization separation circuit (4) and the color signal processing circuit (5), and then input to the video input switching circuit (6). At this time, the video input switching circuit (6) is connected to the power supply through the contact (11). Since the voltage at the input terminal (8) is applied, the synchronous separation circuit (
The input signal from the scale signal generator (7) synchronized by the synchronization signal separated from the video signal in step 4) is superimposed on the input No. a from the color signal processing circuit (5) and output. An image as shown in FIG. 2 will be displayed on the screen, in which a scale indicating the positional relationship with the vehicle is inserted into the photographed image of the rear confirmation television camera.

Since this invention is configured as described above, it can be used as a monitor television receiver when checking the rear, and obstacles etc. behind the vehicle can be confirmed based on the scale indicating the positional relationship with the vehicle. In addition, when not checking the rear, it can be used as a normal television receiver and has excellent effects such as being able to view television broadcast images or reproduced images without the scale interfering with the - side.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing an example of an image for rear confirmation. (1): Input terminal (2): Shooting signal input terminal (3):
Video amplification circuit (4): Sync separation circuit (5): Color signal processing circuit (6): Video input switching circuit (7) Niscale signal generator (8): Power input terminal (9): Relay α
0fil+! Contact Clarion Co., Ltd. Agent Ashi 1) Naoe Figure 1 Figure 2

Claims (1)

[Scope of Claims] 1. An in-vehicle television receiver combined with a television camera for checking the rear of a vehicle, the television camera 2 for checking the rear of the vehicle.
Scale + showing the positional relationship with the vehicle in the captured image
An in-vehicle television receiver characterized in that it includes means for inserting into the m-plane. 2. The in-vehicle television receiver according to claim 1, wherein the scale is inserted into the screen only when the vehicle is reversing.