KR20000039625A - Digital broadcasting reception system with power saving function in program for audio - Google Patents

Abstract

PURPOSE: A digital broadcasting reception system with a power saving function in a program for audio is provided to perform a power saving function by intercepting the power of a CRT according to a user's request. CONSTITUTION: A digital broadcasting reception system with a power saving function in a program for audio comprises a demultiplexer(11), a controller(12), an MPEG decoder(13), a CRT(15), and a switch(17). The demultiplexer divides service information/program specific information, and a program. The controller detects the program comprising only an audio by using the information within the divided service information/program specific information and controls operations of each block according to the detected result. The MPEG decoder decodes video/audio data. The CRT displays the decoded video data. The switch provides the power to the CRT according to a control operation of the controller.

Description

Digital broadcasting receiving system with power saving function for audio program

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system capable of receiving and receiving digital broadcasts. In particular, when a currently received broadcast program is an audio-only program that does not contain video, the CRT is turned off according to a user's request. The present invention relates to a digital broadcasting reception system having a power saving function in an audio-only program for reducing power consumption.

In broadcasting, a program selected by a viewer among a plurality of programs should be able to be quickly displayed on a screen. Therefore, in the digital broadcasting system which is currently being standardized, a table for program related information called program specific information (PSI) is defined, so that a program can be selected using this. Another method is to define an electronic program guide (EPG) and use it to select a program.

On the other hand, digital broadcasting can provide various programs to users by programming including high definition and multichannel. In addition to most programs that include video and audio, there are also programs that include only audio. When the viewer selects the audio-only program, the TV system outputs the audio to the speaker so that the user can listen to the received audio-only program. In this case, the CRT screen of the TV system is processed by black processing or other colors.

However, when receiving an audio-only program as described above, even though most of the users do not see the TV screen but only listen to the audio, the CRT screen of the TV system is processed and expressed in a specific color, thereby causing unnecessary power consumption in the CRT. .

Accordingly, an object of the present invention is to save power in an audio-only program in which the CRT of the TV system can be turned off according to the user's request in order to eliminate power waste in the CRT when receiving an audio-only program. It is to provide digital broadcasting reception system with function.

1 is a block diagram showing a digital broadcasting reception system having a power saving function in an audio-only program according to the present invention;

Figure 2 is a screen state showing a guide phrase displayed on the screen 1 CRT.

Explanation of symbols for main parts of the drawings

11 demultiplexer 12 control unit

13: MPEG decoder 14: OSD unit

15: CRT 16: D / A Converter

17: switch

In order to achieve the above object, a digital broadcasting receiving system having a power saving function in an audio-only program according to the present invention is a system capable of receiving digital broadcasting, and parses data of an input transport stream (TS) form. De-multiplexer that separates service information (SI) / program specification information (PSI) and programs, and detects whether the separated program is an audio-only program through information contained in the separated SI / PSI, and detects A control unit for controlling the operation of each component block according to the result, and an MPEG decoder which decodes the video or audio data contained in the separated program and outputs it to the user for viewing, and if there is no video data, processes the image with a predetermined color. And display video data decoded by the MPEG decoder or display a preset color. The CRT, and on (ON) / off (OFF) according to the control of the control unit for a switch to supply or block power to the CRT.

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

1 is a block diagram of a digital broadcasting reception system having a power saving function in an audio-only program according to the present invention. The system shown in FIG. 1 parses data input in the form of a transport stream (TS) to separate service information (SI) and PSI and a program (DEMUX) for separating a program ( 11) and a control unit 12 for detecting whether the program is an audio-only program from information contained in the separated SI / PSI and controlling the operation of each component block according to the detection result. In addition, the system of FIG. 1 also decodes the video or / and audio data of the separated program, and outputs the user to watch the MPEG decoder 13 and the control unit 12 under the control of the user. And an OSD unit 14 for generating guide text so as to select (OFF), and a CRT 15 for displaying the outputs of the MPEG decoder 13 and the OSD unit 14 on the screen. Meanwhile, the system of FIG. 1 includes a D / A converter 16 for converting an audio signal output from the MPEG decoder 13 into an analog form for external output, and the CRT 15 under the control of the controller 12. And a switch 17 for turning on / off the power supplied to the apparatus. The operation of the digital broadcast receiving system with power saving function in the audio dedicated program of FIG. 1 having such a configuration will be described with reference to FIG.

In FIG. 1, the demultiplexer 11 parses input TS data to separate SI / PSI and a program. The separated SI / PSI is input to the control unit 12 and the separated program is input to the MPEG decoder 13. The control unit 12 detects whether the program is an audio-only program containing only audio from information on the program contained in the SI / PSI. At this time, the MPEG decoder 13 decodes the video and / or audio data contained in the input program, and outputs the video to the screen of the CRT 15 and the audio to the D / A converter 16. The D / A converter 16 converts the input audio signal into an analog form and outputs it to a speaker not shown for the user to hear. If the current program is detected as an audio-only program, the controller 12 displays a guide phrase as shown in FIG. 2 on the screen of the CRT 15 through the OSD unit 14. 2, the current program on the screen of the CRT 15 is an audio only program. A selection menu of yes and no is displayed for the user to select with the prompt "Do you want to turn off the screen?". The user looks at the guidance text displayed on the screen of the CRT 15 and selects one through the remote control or the key metrics attached to the set. When the user wants to turn off the screen, the control unit 12 turns off the switch 17 to turn off the screen of the CRT 15 by cutting off the power supplied to the CRT 15. On the contrary, the control unit 12 controls the OSD unit 14 to eliminate the guidance text displayed on the screen of the CRT 15 and to keep the switch 17 in the ON state, thereby maintaining the screen of the CRT 15 screen. To remain on. In this case, since there is no video corresponding to the program, the MPEG decoder 13 displays the preset color on the screen of the CRT 15. When the screen of the CRT 15 is turned off, the controller 12 turns on the switch 17 when the current program is detected as a program containing video data from the input SI / PSI, and then the power is supplied to the CRT 15. By turning on the CRT 15 automatically, the user can see the screen.

As described above, the digital broadcasting reception system having a power saving function in an audio-only program according to the present invention is a case where the system receives a dedicated audio program from a system capable of receiving digital broadcasting such as DTV or DTTV and listens to only the audio without viewing the screen. By shutting off the power supply to the CRT to turn off the screen, it has the effect of eliminating unnecessary power waste.

Claims (6)

In a system capable of receiving digital broadcasting, A demultiplexer for parsing input transport stream (TS) data to separate service information (SI) / program specification information (PSI) and a program; A control unit for detecting whether the separated program is a program containing only audio through information contained in the separated SI / PSI, and controlling an operation of each component block according to a detection result; An MPEG decoder which decodes video and / or audio data included in the separated program and outputs the video for viewing by a user, and if there is no video data, processes the image with a predetermined color; A CRT that displays video data decoded by the MPEG decoder or displays a preset color; And A digital broadcasting reception system having a power saving function, the switch being ON / OFF under the control of the controller and including a switch for supplying or cutting off power to the CRT. The digital broadcasting reception system according to claim 1, further comprising an OSD unit for outputting a guide phrase on the CRT screen asking the user to turn off the screen whenever the current program is detected as an audio-only program. The digital broadcasting reception system having a power saving function according to claim 1, wherein the controller controls the screen to be turned off when the current program is detected as an audio-only program so that power is cut off to the CRT. The digital broadcasting reception system according to claim 2, wherein the controller controls the screen to be turned off when the current program is detected as an audio-only program and the user request is cut off so that power is supplied to the CRT. The digital broadcasting reception with a power saving function according to claim 4, wherein the control unit controls the current program to be detected as an audio-only program and maintains a state in which the screen is turned on when power is supplied to the CRT when there is no user request. system. The digital broadcasting reception apparatus according to claim 4, wherein the control unit controls to turn on the screen by supplying power to the CRT when the current program is detected as an audio-only program in the audio-only program. system.