KR20010073918A - Device for controlling screen in digital audio/video receiver - Google Patents

Abstract

PURPOSE: A screen mute control device of a digital audio/video receiver is provided to reduce the power consumption by intercepting the power supplied to a video processor and a display. CONSTITUTION: A microcomputer(202) generates a predetermined control signal according to an input signal received from a key input device(201). A front end receiving portion(203) has a tuner(203a) and a VSB demodulator(203b) to receive and demodulate digital broadcasting data. A transport demultiplexer(204) separates the demodulated digital broadcasting data into an audio signal and a video signal. An audio processing portion(205) decodes the audio signal and outputs the decoded audio signal to a speaker(206). A video processing portion(207) decodes the video signal and outputs the decoded video signal to a display device(208). A power block(210) supplies power to each devices. The audio processing portion(205) is composed of a digital audio decoder(205a) for decoding the digital audio data and an audio output device(205b) for outputting decoded digital audio data to the speaker(206). The video processing portion(207) is composed of a video decoder(207a) for decoding the digital video data, a video display processor(207b) for displaying the decoded digital video data, and a video display device(207c) for outputting images.

Description

Device for controlling screen mute in digital audio / video receiver

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for controlling a screen mute of a digital audio / video receiver. In particular, the present invention relates to digital audio that can reduce power consumption by cutting off power supplied to a video processor and a display. Screen mute control device of a video receiver.

In the rapid development of information and communication, to the multimedia field that combines various forms of information such as video and audio, as well as the rapid development of technologies such as electricity, electronics, computer, communication, etc. The storage and presence forms of digitization are being digitized from analog. In particular, due to the development of the Moving Picture Experts Group (MPEG) technology, which is a compression standard for moving image data for compressing digital image data that requires a relatively large amount of data, the size of digital image data is gradually getting smaller. Increasingly, digital video and audio services have been applied to almost all fields such as home appliances, telecommunications, and the like, and digital devices for providing such services have emerged.

Among them, broadcasting and TV occupy an important place as an easy and effective information transmission medium in daily life. With digital TV, many broadcasts can be easily enjoyed at home with clearer picture quality and more vivid sound.

In addition, a digital audio / video receiver (digital audio / video receiver) is employed in the digital TV provided with the digital audio and video service, and the digital audio / video receiver is a large screen, high definition (HD) image of video. For audio, 5.1-channel audio employing MPEG audio and Dolby AC-3 is used to provide good audio quality.

In particular, a digital audio service is provided that exclusively provides audio for music enthusiasts using the 5.1 channel that provides the audio of good sound quality. The digital audio service is provided through a speaker, and audio is broadcast. Descriptions are displayed to the user through the OSD (On Screen Display).

1 is a block diagram of a digital audio / video receiver with a conventional display device.

Referring to FIG. 1, a digital audio / video receiver having a conventional display device includes a key input device 101 through which a user inputs a key to input a predetermined command, and receives the key. A front end 103 having a micom 102 for generating a control signal of a signal, a tuner 103a for receiving and demodulating digital broadcast data, and a VSB demodulator 103b. ), A transport demultiplexer 104 for separating the demodulated digital broadcast data into an audio signal and a video signal, and an audio processor 105 for decoding the separated audio signal and outputting the decoded audio signal through a speaker 106. ), A video processor 107 for decoding the separated video data and outputting an image through the display device 108, and a power block 110 for supplying power to each unit. The.

Here, the audio processor 105 may include a digital audio decoder 105a for decoding digital audio data, and an audio output device 105b for outputting the same through a speaker 106. The video processor 107 includes a video decoder 107a for decoding digital video data, and a video display processor constituting a screen for displaying the decoded video data. 107b and a video display device 107c for outputting an image through the display device 108.

Referring to the operation of the digital audio / video receiver having the above configuration, the digital data received and demodulated through the front end receiver 103 is separated into the video data and the audio data by the demultiplexer 104, and the audio data is the audio processor. The data is processed through the 105 and output through the speaker 106, and the video data is processed through the video processor 107 and output through the display device 108.

In addition, the series of operations described above are controlled by the microcomputer 102 according to a predetermined command input by the user through the key input unit 101, and the power supplied to each unit is also controlled by the microcomputer 102. Controlled through 110).

However, such a digital audio / video receiver displays information such as a description of the audio even when only the audio is being broadcast, and informs the user. Therefore, the display device and the video processor must operate, and accordingly, a large portion of the power is required. Power must be supplied to the display device that occupies. Therefore, there is a problem in that the display device and the video processor are operated when the user does not want to waste power.

The present invention has been made to solve the above-mentioned problems. When the user receives a broadcast for audio or only listens to sound, the present invention cuts the power supplied to the display device and the video processing unit, which takes up a large part of the power use, thereby reducing the overall power consumption. An object of the present invention is to provide a screen mute control device of a digital audio / video receiver which can save the cost.

1 is a block diagram of a digital audio / video receiver with a conventional display device.

2 is a block diagram of a screen mute control device of a digital audio / video receiver according to the present invention;

3 is a flow chart showing the operation of the screen mute control device of the digital audio / video receiver according to the present invention;

<Explanation of symbols for the main parts of the drawings>

101, 201 ... key input 102, 202 ... microcomputer

103, 203 ... shear receiver 103a, 203a ... tuner

103b, 203b ... demodulator 104, 204 ... demultiplexer

105, 205 ... Audio processing section 105a, 205a ... Digital audio decoder

105b, 205b ... audio outputs 106, 206 ... speakers

107, 207 video processing unit 107a, 207a video decoder

107b, 207b ... video image processing unit 107c, 207c ... video image output unit

108, 208 ... display unit 209 ... switch section

110, 210

In order to achieve the above object, a screen mute control apparatus of a digital audio / video receiver according to the present invention includes a microcomputer receiving a screen mute key from a user and generating a predetermined control signal, and audio data of the received digital broadcast data; A demultiplexer for separating video data, an audio processing unit for decoding the separated audio data and outputting the same through a speaker, a video processing unit for decoding the separated video data and outputting an image through a display device, and each unit And a power supply unit for supplying power to the power supply unit, and a switch unit for supplying and cutting off power to the video processing unit according to the control signal of the microcomputer.

According to the present invention, by cutting off the power of the display device when receiving a broadcast for audio only or the user wants to hear only sound, there is an advantage that can save the power consumption.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of a screen mute control apparatus of a digital audio / video receiver according to the present invention, and FIG. 3 is a flowchart showing an operation of the screen mute control apparatus of a digital audio / video receiver according to the present invention.

First, referring to FIG. 2, the apparatus for controlling screen muting of a digital audio / video receiver according to the present invention basically includes a configuration of a conventional digital audio / video receiver. That is, a user inputs a key to input a predetermined command, a key input unit 201, a microcomputer 202 that receives the key to generate a predetermined control signal, and a tuner that receives and demodulates digital broadcast data. A front end receiver 203 having a 203a and a VSB demodulator 203b, a demultiplexer 204 for separating the demodulated digital broadcast data into an audio signal and a video signal, and a decoded audio signal to decode the speaker. An audio processing unit 205 for outputting through 206, a video processing unit 207 for decoding the separated video data and outputting an image through a display device 208, and a power supply unit for supplying power to each unit. 210 is basically provided, and the audio processor 205 outputs a digital audio decoder 205a for decoding digital audio data, and outputs the same through the speaker 206. A video decoder 207a for decoding digital video data, and a video processor 207b for configuring a screen for displaying the decoded video data. ) And a video image output unit 207c for outputting the image through the display device 208.

However, the apparatus for controlling screen muting of a digital audio / video receiver according to the present invention is a video processor 207 according to a control signal of the microcomputer 202 in order to cut off power supplied to the display apparatus 208 and the video processor 207. And a switch unit 209 for supplying and cutting off power supplied to the display device 208.

An operation of the screen mute control device of the digital audio / video receiver according to the present invention having the above configuration will be described with reference to FIG. 3.

First, when a user inputs a predetermined command key through the key input unit 201 (step 301), the microcomputer 202 receives it and determines whether it is a screen mute key (step 302).

At this time, if the input key is a screen mute key, the microcomputer 202 generates a control signal for controlling the switch unit 209 (step 303), and the power supply unit 210 and the video processing unit 207 according to the control signal. And the switch units 209, a, b, c, and d to which the display apparatus 208 is connected are opened to cut off the power supply (step 304), and the display screen is erased (step 305).

As a result of the determination in step 302, when the input key is not the screen mute key, the switch sections 209, a, b, c, d are shorted (step 306) and displayed normally (step 307).

As described above, the present invention can continuously listen to the audio while the display screen is muted by the user, thereby reducing power consumption by cutting off the power supplied to the display apparatus and the video processor which occupy most of the power.

As described above, the screen mute control device of the digital audio / video receiver according to the present invention receives a broadcast for audio only, or when the user wants to listen to sound only, the power supplied to the display device occupies a large portion of power. By blocking the display screen, you can save overall power usage. In addition, there is an effect that allows the user to be more faithful to music when receiving a music broadcast.

Claims (1)

A microcomputer receiving a screen mute key from a user and generating a predetermined control signal; A demultiplexer for separating audio data and video data of the received digital broadcast data; An audio processor for decoding the separated audio data and outputting the same through a speaker; A video processor for decoding the separated video data and outputting an image through a display device; A power supply unit for supplying power to each unit; And And a switch unit for supplying and cutting off the power of the video processing unit in accordance with the control signal of the microcomputer.