JPH05236365A - Television receiver - Google Patents

Abstract

PURPOSE:To check the video signal supplied to an external output terminal in a video recording mode or a dubbing mode by providing a switching means which projects the images actually outputted on a monitor screen. CONSTITUTION:A 2nd switching circuit 16 can monitor the video signals supplied to the video output terminals O1-O3 with addition of lines M1-M3. That is the circuit 16 fetches the video signals supplied to the terminals O1-O3 and these output video signals can be monitored on a CRT 17. Therefore, the broadcast programs of a BS channel are supplied to the terminal O1 kept in a BS-out state and the circuit 16 fetches the output video signal and can monitor this signal through the CRT 17 even when a VTR connected to the terminal O1 is recording images.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a TV receiver capable of displaying a broadcast program selected by a tuner and an input video signal supplied from an external input terminal, and more particularly to an external video output terminal. The present invention relates to a TV receiver provided.

[0002]

2. Description of the Related Art Recent TV receivers are equipped with a tuner for receiving satellite broadcasts in addition to VHF and UHF broadcasts, and VTR, MDP (multi-disc player), 8 m
Some are equipped with external input terminals 1 to 5 so that a video signal supplied from an m-video or the like can be monitored.
In addition, a BS external output terminal for outputting a broadcast program received by a VHF tuner or a BS tuner as a video signal, and a video signal supplied from the external input terminal so that it can be used when performing dubbing are output to the outside. Some are equipped with a line-out output terminal.

Such a high-quality large-sized TV receiver is
Almost all operations can be performed by a remote controller (remote control) and can be operated by command data output from a microcomputer housed inside, and 1 to 4 on the monitor screen using the multi-image division function. Some of the images can be displayed simultaneously.

[0004]

As described above, a TV receiver capable of selecting an input video signal and sending it to the output terminal of the TV receiver is convenient, for example, when performing dubbing. When selecting a video signal to be output from the input video signals, I was worried whether or not the desired video signal was actually output, and there was a problem that I could not know the contents of the video signal being output. ..

[0005]

In order to solve such a problem, the present invention is provided with a switching means for displaying an image which is actually output on a monitor screen.

[0006]

Since the content of the output video signal is displayed on the screen or a part of the screen, the user can confirm the content of the output video signal.

[0007]

1 is a block diagram of a video system circuit of a TV receiver according to the present invention. In this figure, 10 is VHF
Or the first tuner for receiving UHF broadcast, 12 is BS
BS tuners 13, 14 for receiving a broadcast channel are image forming circuits for forming an image signal from the tuner output, and include an intermediate frequency amplifier, a demodulator, a color signal processing circuit and the like. The general broadcast video signal and the BS video signal formed by these circuits are supplied to the switching circuit 14 together with the reproduced video signal supplied from the external input terminal of the TV receiver. The switching circuit 14 selects a desired video signal V ₁ from the video signals on the input side by a switching signal C ₁ supplied from a microprocessor (not shown), and supplies the selected video signal V ₁ to the monitor screen signal processing unit 15. The signals are input to the CRT 17 as RGB signals. In addition, the switching circuit 14
In addition to the main video signal V ₁ , the second, third, and fourth video signals V ₂ , V ₃ , and V ₄ can be selected, and these video signals V ₂ , V ₃ , and V are selected. _As will be described later, the reference numeral ₄ is converted so as to be a sub-picture for the main picture, and the picture-in-picture (PinP) function can be inserted into a part of the main picture. Further, in the case of the present invention, the video signal selected from the video signals inputted by the switching circuit 14 can be sent to the external output terminals O ₁ , O ₂ , O ₃ .

Reference numeral 16 is a second for switching the video signal to be inserted into the monitor screen by the switching signal C ₁ .
The switching circuit of is shown. The video signal selected by the second switching circuit 16 is normally displayed as a child screen, but it can also be used as a parent screen by performing a parent / child switching operation in the monitor screen signal processing unit 15. ..

In the TV receiver of the present invention, the video output terminals O ₁ , O ₂ and O are provided by the second switching circuit 16.
_The video signal supplied to the line ₃ is changed to the lines M ₁ , M ₂ , M
_It can be monitored by providing ₃ . That is, the second switching circuit 16 takes in the video signals supplied to the external output terminals O ₁ , O ₂ , and O ₃ , and the CRT 17 can monitor the output video signals. Therefore, for example, even when the broadcast program of the BS channel is supplied to the output terminal O ₁ which is BSout and is recorded by the VTR or the like connected to the output terminal O ₁ , the second switch circuit 16 is also provided.
Since this output video signal can be captured and displayed on the CRT 17 for monitoring, the user can confirm whether or not the video currently being recorded is the broadcast program of the channel selected by the user.

The monitor screen of such an external output may be displayed by switching it from the main screen.
HDTV type aspect ratio (5: 3)
In the monitor screen having, three sub-screens are formed on a part of the main screen, and for example, three output terminals are adapted to project the respective video signals output to O ₁ , O ₂ and O _3. Good.

[0011]

As described above, the TV receiver of the present invention is provided with the switching circuit that allows the video signal sent from the video output terminal to be displayed on the monitor screen. Therefore, during recording or dubbing. When performing the above, there is an advantage that the video signal supplied to the external output terminal can be easily checked and the usability is improved for the user.

[Brief description of drawings]

FIG. 1 is a block diagram of a video system circuit adopted in a TV receiver of the present invention.

FIG. 2 is an explanatory diagram showing an example of a monitor screen.

[Explanation of symbols]

14 first switch circuit 15 monitor screen signal processing 16 second switch circuit O ₁ , O ₂ , O ₃ external video output terminal

Claims (1)

[Claims] 1. A tuner for receiving various broadcast channels, a first selecting means for selecting a broadcast video signal of a broadcast channel selected by the tuner, and an input video signal supplied from an external input terminal. A television receiver comprising display means for displaying the video signal selected by the first selection means, wherein an external output terminal capable of outputting the broadcast video signal and the input video signal is provided, and A television receiver comprising second selecting means for selecting a video signal output to an external output terminal and supplying the selected video signal to the display means.