JPH09289615A - Television receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a television receiver in which an electronic program guide is surely received and useless power is avoided. SOLUTION: A power supply system is distributed minutely, power supply to a tuner and a signal processing circuit is not always supplied, a new power supply system to supply power after a read instruction of an electronic program guide is detected is provided to surely receive the electronic program guide and useless power is avoided. When a broadcast time of the electronic program guide comes, a microcomputer 10 as a control section switches a switch 13 to be closed to execute power supply to the tuner 2 and a VIF 3 and a video signal processing circuit 4.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a television receiver.

[0002]

2. Description of the Related Art A conventional television receiver is constructed as shown in FIGS. As shown in FIG. 4, a tuner 2 receives a television broadcast wave via an antenna 1.
Selects the broadcast of the target station, converts the frequency, and
The image is reproduced by the CRT 6 through the image signal processing circuit 4 and the deflection circuit / audio circuit 5, and the audio is reproduced by the speaker 7.

Conventionally, the tuner 2, the VIF 3, and the video signal processing circuit 4 are constantly supplied with electric power for the purpose of taking in an electronic program guide which is broadcast during a time when the viewer does not use the television, such as at midnight. Specifically, the AC voltage of the commercial power supply 8 is converted into a predetermined DC voltage by the first power supply unit 9, and the output voltage of the first power supply unit 9 is equal to the tuner 2 and V.
Power is constantly supplied to the IF 3 and the video signal processing circuit 4. The microcomputer 10 is constantly supplied with power from the first power supply unit 9.

FIG. 5 shows the configuration of the microcomputer 10. The conventional microcomputer 10 includes a normal control unit 10a that controls each block when watching television.
And an electronic program storage unit 10b for storing the imported electronic program guide, an electronic program management unit 10c for loading the electronic program guide into the electronic program storage unit 10b, and for on-screening the imported electronic program guide. Therefore, when the viewer watches the television, the microcomputer 10 turns on the switch 12 to supply power to the deflection circuit / audio circuit 5 from the commercial power supply 8 via the second power supply unit 11.

[0005]

As described above, the tuner 2 and the VIF 3 are conventionally used to capture the electronic program guide.
Also, the video signal processing circuit 4 is constantly supplied with power, and power is wasted unless the broadcast time of the electronic program guide is reached.

An object of the present invention is to provide a television receiver capable of reliably incorporating an electronic program guide and avoiding waste of electric power.

[0007]

In the television receiver of the present invention, the power supply system is subdivided, the power supply to the tuner and the signal processing circuit is stopped constantly, and the power is supplied after detecting the read instruction of the electronic program guide. By providing a new power supply system, the electronic program guide can be surely taken in, and waste of power can be avoided.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A television receiver according to claim 1 receives and stores an electronic program guide superimposed on a television broadcast wave, and displays the stored electronic program guide on-screen. When watching a TV broadcast, a tuner, a signal processing circuit that processes the received signal selected by the tuner, a drive circuit that displays the video signal processed by the signal processing circuit on the display and reproduces an audio signal, and a TV broadcast Includes a controller that supplies power to the tuner, the signal processing circuit, and the drive circuit, and supplies power to the tuner and the signal processing circuit without supplying power to the drive circuit when the reading instruction of the electronic program guide is detected. It is characterized in that the electronic program guide is provided and received and managed by the control unit.
When the viewer is not watching the television broadcast and the broadcast time of the electronic program guide is not available, power supply to the tuner and the signal processing circuit is turned off, and waste of power consumption can be avoided.

The television receiver according to claim 2 is
In a television receiver that receives and stores an electronic program guide superimposed on a CATV broadcast sent by a CATV cable, and displays the stored electronic program guide on a screen, a tuner and a reception signal selected by the tuner Signal processing circuit for processing the video signal, a drive circuit for displaying a video signal processed by the signal processing circuit on the display and reproducing an audio signal, and a power supply to the tuner, the signal processing circuit and the drive circuit when a CATV broadcast is viewed. However, when the electronic program guide read command is detected, a tuner and a control unit for supplying power to the signal processing circuit are provided without supplying power to the drive circuit, and the received electronic program guide is taken into the control unit. It is characterized in that it is configured to be managed by In a state not airtime id, is to the tuner and a signal processing circuit power supply is turned off can be avoided waste of power consumption.

Hereinafter, the television receiver of the present invention will be described with reference to FIG.
~ It demonstrates based on each embodiment shown in FIG. In addition,
Components having the same functions as those of the conventional example shown in FIG. 3 are described with the same reference numerals.

(Embodiment 1) FIGS. 1 and 2 show (Embodiment 1). As shown in FIG. 1, the tuner 2 which has received the television broadcast radio wave through the antenna 1 tunes the frequency of the broadcast of the target station and frequency-converts the VIF 3, the video signal processing circuit 4, and the deflection circuit / audio circuit 5. The video is reproduced on the CRT 6 via the, and the sound is reproduced from the speaker 7.

Power is supplied to the tuner 2, the VIF 3, and the video signal processing circuit 4 from the commercial power source 8 via the first power source section 9 and the switch 13. Power is supplied to the deflection circuit / audio circuit 5 from the commercial power source 8 via the switch 12 and the second power source unit 11. The microcomputer 10 is constantly supplied with power from the commercial power supply 8 through the first power supply unit 9.

In the first embodiment, the signal processing circuit in the claims is composed of the VIF 3 and the video signal processing circuit 4, and the drive circuit is composed of the deflection circuit / audio circuit 5. The control unit is composed of the microcomputer 10.

FIG. 2 shows the configuration of the microcomputer 10. Compared with the conventional microcomputer 10 shown in FIG. 5, in the first embodiment, the timer management section 10d.
Has been added.

The timer management unit 10d has preset the broadcast time of the electronic program guide as the target time, and when it detects that the time has reached the target time, the timer management unit 1d.
0d instructs the electronic program management unit 10c to read the electronic program guide into the electronic program storage unit 10b.

The electronic program management unit 10c that has decoded this command
Switches the switch 13 to the ON state to supply power to the tuner 2, the VIF 3 and the video signal processing circuit 4, and also switches the tuner 2 to the set channel for broadcasting the electronic program guide. Then, the received electronic program guide is written in the electronic program storage unit 10b.

It should be noted that the switch 13 is turned on together with the switch 12 when a viewer watches a television broadcast, and the above-mentioned standby switch 12 for taking in the electronic program guide is turned off together with the switch 13. Has been.

With this configuration, power is turned off to the tuner 2, the VIF 3, and the video signal processing circuit 4 when the viewer is not watching the television broadcast and when the broadcast time of the electronic program guide is not available. You can avoid using it.

(Second Embodiment) FIG. 3 shows a second embodiment.
Is shown. In the embodiment of (Embodiment 1), the output of the first power supply unit 9 and the tuner 2 and V
The power supply to the IF 3 and the video signal processing circuit 4 was controlled, but in this (Embodiment 2), a third power supply unit 14 different from the first and second power supply units 9 and 11 is provided, Commercial power supply 8
Power is supplied to the tuner 2, the VIF 3, and the video signal processing circuit 4 through the switch 13 and the third power supply unit 14. The switch 13 is switched by the microcomputer 10 similarly to (Embodiment 2), and the same effect as (Embodiment 1) can be expected.

According to each of the above-mentioned embodiments, the case where the electronic program guide is taken into the electronic program storage unit 10b of the microcomputer 10 from the broadcast radio wave has been described as an example. However, the broadcasting which is broadcast by a cable such as CATV. The same applies to the case of a television receiver that handles the.

[0021]

As described above, according to the present invention, when a television broadcast is viewed, power is supplied to the tuner, the signal processing circuit and the drive circuit, and when the read instruction of the electronic program guide is detected, the drive circuit is supplied. Since a control unit that supplies power to the tuner and the signal processing circuit without power supply is provided, it is possible to use less power than the conventional television receiver in which the tuner and the signal processing circuit are always supplied with power to capture the electronic program guide. This can be avoided and the electronic program guide can be surely taken in.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a television receiver of (Embodiment 1).

FIG. 2 is a configuration diagram of a microcomputer of the same embodiment.

FIG. 3 is a configuration diagram of a television receiver of (Embodiment 2).

FIG. 4 is a configuration diagram of a conventional television receiver.

FIG. 5 is a configuration diagram of a conventional microcomputer.

[Explanation of symbols]

 2 tuner 3 VIF 4 video signal processing circuit 5 deflection circuit / audio circuit 8 commercial power supply 9 first power supply unit 10 microcomputer 10d timer management unit

Claims (2)

[Claims] 1. A television receiver for receiving and storing an electronic program guide superimposed on television broadcast waves, and displaying the stored electronic program guide on-screen,
A tuner, a signal processing circuit for processing a reception signal selected by the tuner, a drive circuit for displaying a video signal processed by the signal processing circuit on a display and reproducing an audio signal, and the above-mentioned when watching a television broadcast. The tuner, the signal processing circuit, and the drive circuit are supplied with power, and when the electronic program guide reading instruction is detected, the tuner and the signal processing circuit are supplied with power without supplying power to the drive circuit. A television receiver configured to take in and manage the electronic program guide described above in the control unit. 2. A CAT sent by a CATV cable.
In a television receiver for receiving and storing an electronic program guide superimposed on a V broadcast and displaying the stored electronic program guide on a screen, a tuner and a signal processing circuit for processing a reception signal selected by the tuner. , A drive circuit for displaying a video signal processed by the signal processing circuit on a display and reproducing an audio signal, and a power supply to the tuner, the signal processing circuit and the drive circuit when watching a CATV broadcast, and the electronic program guide. And a control unit for supplying power to the signal processing circuit in a state where power is not supplied to the drive circuit, and a received electronic program guide is incorporated into the control unit and managed when the read command is detected. John receiver.