JPH0574118A - Television receiver - Google Patents

Abstract

PURPOSE:To realize a switching system which protects a recorded picture of a video tape recorder having a BS tuner incorporated and also enables utilization of a BS decoder by a television receiver having the BS tuner incorporated, when the video tape recorder having the BS tuner incorporated does not operate. CONSTITUTION:One BS decoder 5 is used commonly by a video tape recorder 2 having a BS tuner incorporated and a television receiver 1 having the BS tuner incorporated, which are provided separately. Switching of an apparatus using the BS decoder 5 is conducted while a state of operation of the video tape recorder 2 having the BS tuner incorporated is monitored.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver having a built-in BS tuner having a BS decoder signal switching function for sharing one BS decoder with a video tape recorder having a built-in BS tuner. is there.

[0002]

2. Description of the Related Art A conventional television receiver having a built-in BS tuner having a signal switching function for a BS decoder is shown in FIG.
Will be explained together.

A conventional television receiver having a built-in BS tuner (hereinafter referred to as a BS tuner built-in television) 12
Is a BS decoder signal input terminal 14 for inputting a BS decoder signal from a video tape recorder (hereinafter referred to as BS tuner built-in video) 13 having a built-in BS tuner.
, A BS decoder signal output terminal 16 for outputting a BS decoder signal to the BS decoder 15, and a pay broadcast for determining whether the channel being received by the BS tuner 17 of the BS tuner built-in television 12 is a pay broadcast. The BS decoder signal output to the determination circuit 18 and the BS decoder signal output terminal 16 is a signal input from the BS decoder signal input terminal 14 and the BS decoder signal of the BS tuner 17 of the BS tuner built-in television 12. The BS decoder signal switching circuit 19 for switching between the BS decoder 17 and the BS tuner 17 of the television with built-in BS tuner 12 outputs the BS decoder signal of the BS tuner 17 to the BS decoder according to the determination result of the pay broadcasting determination circuit 18. Output to the signal output terminal 16 for BS, otherwise BS
The BS decoder signal switching circuit 19 controls the BS decoder signal switching circuit 19 to output the BS decoder signal input to the decoder signal input terminal 14 to the BS decoder signal output terminal 16.

[0004]

In the conventional TV with a built-in BS tuner configured as described above, the video with a built-in BS tuner connected to the signal input terminal for the BS decoder performs recording using the BS decoder. When
When the TV with a built-in BS tuner receives a pay broadcast channel, the recording control of the video with a built-in BS tuner is ignored and the BS decoder signal of the BS tuner with a built-in TV is output to the BS decoder signal output terminal. The video with the built-in BS tuner has a problem that the BS decoder cannot be used and the target channel cannot be recorded.

[0005]

A television receiver according to the present invention solves the above-mentioned problems, and includes a BS decoder signal output terminal for transmitting a BS decoder signal to a BS decoder, and a video tape recorder. BS decoder signal input terminal for inputting a BS decoder signal from the built-in BS tuner and BS of the BS tuner built in the television receiver to the BS decoder signal output terminal.
B for switching and outputting the decoder signal and the BS decoder signal input to the BS decoder signal input terminal
BS decoder signal input presence / absence detection for determining whether or not a BS decoder signal is input from the S decoder signal switching circuit and the BS tuner built in the video tape recorder connected to the BS decoder signal input terminal The circuit, the pay broadcast judging circuit for judging whether the channel selected by the BS tuner built in the television receiver is pay broadcasting, the judgment result by the BS decoder signal input presence / absence detecting circuit, and the pay broadcasting judging circuit. A switching control circuit for controlling the BS decoder signal switching circuit in accordance with the pay broadcast determination result, and a mode switching means for switching the switching control circuit to one of the recording priority mode and the television priority mode. It is configured as follows.

[0006]

With the above construction, by switching between the television priority mode and the recording protection (priority) mode by the operation mode switching means, the switching control circuit can realize the switching control corresponding to that mode.

That is, in the television priority mode, the switching control circuit has a BS tuner built in the television receiver (hereinafter referred to as a television built-in BS tuner) from the pay broadcast determination circuit.
The BS decoder signal switching circuit is controlled so that the BS decoder signal of the BS tuner with built-in television is output to the BS decoder signal output terminal only when the channel selected by is determined to be a pay broadcast, and at other times. The BS decoder signal switching circuit operates the BS decoder signal from the video with a built-in BS tuner connected to the BS decoder signal input terminal, so that the BS decoder can be used when the television receives a pay broadcast.

When the recording protection mode is selected by the mode switching means, the switching control circuit determines that the BS decoder signal input terminal has a signal input terminal if the BS decoder signal input presence / absence detection circuit determines that there is an input signal. It is determined that the connected video with built-in BS tuner is operating, and the BS decoder signal switching circuit is controlled to switch the signal to the BS decoder signal output terminal to the input signal from the BS decoder signal input terminal.

If the determination result of the BS decoder signal input presence / absence detecting circuit is that there is no input signal, it is determined that the BS tuner built-in video connected to the BS decoder signal input terminal is not operating, and the BS decoder The BS decoder signal switching control circuit is controlled so that the signal to the decoder signal output terminal is switched to the BS decoder signal of the BS tuner with built-in television.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the television receiver of the present invention will be described below with reference to FIG.

A television receiver (hereinafter, referred to as a BS tuner built-in television) 1 having a built-in BS tuner of the present invention is a video tape recorder (hereinafter, B) having a built-in BS tuner.
BS decoder signal input terminal 3 for inputting a BS decoder signal from S tuner built-in video 2),
A BS decoder signal input presence / absence detection circuit 4 for determining the presence / absence of a signal input from the BS decoder signal input terminal 3, and a BS decoder signal output terminal 6 for outputting a BS decoder signal to the BS decoder 5. BS which outputs to the BS decoder signal output terminal 6 by switching between the BS decoder signal input from the BS decoder signal input terminal 3 and the BS decoder signal generated in the BS tuner 7 of the BS tuner built-in television 1. A decoder signal switching circuit 8, a switching control circuit 9 for controlling the BS decoder signal switching circuit 8 based on various information, a pay broadcasting determination circuit 10 for detecting a pay broadcasting state of a receiving channel of the BS tuner, and the switching. The operation of the control circuit 9 includes a television receiver (hereinafter referred to as a television) priority mode and a video tape recorder (hereinafter referred to as a television). And it constitutes a operation mode change-over switch 11 for switching the recording protection mode referred to as O).

In the television 1 with built-in BS tuner configured as described above, the changeover control circuit 1 changes its control state according to the state of the operation mode changeover switch 11, and the operation mode changeover switch 11 is set to the television priority mode. Then, the switching control circuit 9 operates as the pay broadcast determination circuit 1
Depending on the state of the pay channel of the receiving channel of the BS tuner 7 with a built-in television determined by 0, the BS decoder signal of the BS tuner 7 is used for pay broadcasting, and the BS decoder signal input terminal 3 is used for other than pay broadcasting. So that the BS decoder signal from the video 2 with built-in BS tuner connected to the B decoder is output to the BS decoder signal output terminal 6.
The S decoder signal switching circuit 8 is controlled. This allows
The television 1 with a built-in BS tuner can use the BS decoder 5 when necessary.

When the operation mode changeover switch 11 is set to the recording priority mode, the changeover control circuit 9 is connected to the BS decoder signal input terminal 3 according to the determination result of the BS decoder signal input presence / absence detection circuit 4. It is determined whether or not the video 2 with built-in BS tuner is operating. If the result of the determination by the signal input presence / absence detection circuit 4 for BS decoder is "input", the video 2 with built-in BS tuner operates. Judged as medium, BS decoder signal output terminal 6
The signal for the BS decoder is controlled so that the signal for the BS decoder is switched to the signal input from the input terminal 3 to secure the signal flow so that the video 2 with the built-in BS tuner can use the BS decoder 5. To do. If the BS decoder signal input presence / absence detection circuit 4 determines that the input signal is “absent”, the BS tuner built-in video 2 connected to the BS decoder signal input terminal 3 is not operating. The BS decoder 5 is used on the television side by controlling the BS decoder signal switching circuit 8 so that the signal to the BS decoder signal output terminal 6 is switched by the BS decoder signal of the BS tuner 7 built in the television. It can be so.

The television 1 with a built-in BS tuner is referred to here.
Since the circuit shown in (1) operates even when the TV 1 with the built-in BS tuner is in the standby state, the operation mode selector switch 11 is always set to the recording priority mode when the video 2 with the built-in BS tuner is in the recording state or the timer recording standby state. By so setting, a signal flow is automatically ensured so that the video 2 with built-in BS tuner can use the BS decoder 5, and the video 2 with built-in tuner and the BS decoder 5
Make sure to connect the.

[0015]

Since the television receiver of the present invention has the above-mentioned configuration, in the system in which one BS decoder is shared by the video with the built-in BS tuner and the TV with the built-in BS tuner, the video with the built-in BS tuner is used. Since the equipment using the BS decoder is switched while monitoring the operating status of, the recording of the video with the built-in BS tuner is protected and there is a switching system that can use the BS decoder with the TV with the built-in BS tuner when the video with the built-in BS tuner is not operating. A TV with a built-in BS tuner can be realized.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a television receiver of the present invention.

FIG. 2 is a block diagram showing an embodiment of a conventional television receiver.

[Explanation of symbols]

 1 TV with built-in BS tuner 2 Video with built-in BS tuner 3 Signal input terminal for BS decoder 4 BS decoder signal input presence / absence detection circuit 5 BS decoder 6 BS decoder signal output terminal 7 BS tuner 8 BS decoder signal switching circuit 9 Switching control circuit 10 Pay Broadcast Judgment Circuit 11 Operation Mode Switch

Claims (1)

[Claims] 1. A BS decoder signal output terminal for transmitting a BS decoder signal to a BS decoder, a BS decoder signal input terminal for inputting a BS decoder signal from a BS tuner built in a video tape recorder, and B
BS decoder signal switching circuit for switching and outputting the BS decoder signal of the BS tuner built into the television receiver and the BS decoder signal input to the BS decoder signal input terminal to the S decoder signal output terminal From the BS tuner built in the video tape recorder connected to the BS decoder signal input terminal.
BS that determines whether or not a decoder signal is input
A decoder signal input presence / absence detection circuit, a pay broadcast determination circuit that determines whether the channel selected by the BS tuner built in the television receiver is a pay broadcast, and a determination result by the BS decoder signal input presence / absence detection circuit. A switching control circuit for controlling the BS decoder signal switching circuit in accordance with the result of the pay broadcasting judgment by the pay broadcasting judging circuit, and the switching control circuit is switched to either one of the recording priority mode and the television priority mode. A television receiver comprising a mode switching means.