KR20070121316A - Method for reducing the consumption of electricity on standby mode in a digital broadcasting receiver - Google Patents

Abstract

A method for reducing power consumption during a standby mode in a digital broadcasting receiver is provided to turn on/off 12V power, necessary for driving a loop through function by using a slow switching pin of a SCART jack, automatically according to connection or non-connection of an external device, thereby preventing unnecessary power consumption during the standby mode. A method for reducing power consumption during a standby mode in a digital broadcasting receiver comprises the following steps of: checking whether power is supplied to a slow switching pin of a SCART jack to control power according to connection of an external device in the standby mode of the receiver(S202); if so, operating a loop through by supplying operation power of a preset voltage level after determining the connection of the external device(S206); and if not so, cutting off power supply of the preset operation power after determining non-connection of the external device(S208).

Description

TECHNICAL FOR REDUCING THE CONSUMPTION OF ELECTRICITY ON STANDBY MODE IN A DIGITAL BROADCASTING RECEIVER}

1 is a schematic block diagram of a digital broadcast receiver according to an embodiment of the present invention;

2 is a flowchart illustrating an operation for reducing power consumption in a standby mode in a digital broadcasting receiver according to an exemplary embodiment of the present invention.

<Brief description of the major symbols in the drawings>

100: tuner unit 102: channel decoder

104: demultiplexer 106: MPEG-2 decoder

108: video processing unit 110: audio processing unit

112: display unit 114: speaker

116: microcomputer 118: key input unit

120: memory 122: HDD

124: IR receiver 126: remote control

The present invention relates to a digital broadcasting receiver, and more particularly, to a method for reducing power consumption in standby mode in a digital broadcasting receiver having a loop through function.

A digital broadcasting receiver, commonly called a set top box, is a device configured with a TV receiver to receive various TV image data of multiple channels transmitted through a network or satellite, and transmitted through a network or satellite. Receive the digital broadcasting data compressed by the MPEG-2 method, decompress the compressed data, decode the encoded data, and convert the encoded data into a standard NTSC signal so that it can be displayed on a TV receiver.

That is, the digital broadcast receiver receives a bit-stream type digital broadcast signal transmitted by a broadcasting station and broadcasts a channel selected from the broadcast signals received by transport demux. It is configured to extract the signal, decode the extracted broadcast signal in a moving picture experts group (MPEG) -2 scheme, and display the extracted broadcast signal.

On the other hand, the digital broadcast receiver as described above, in addition to the conventional broadcast reception function, recently built a device such as HDD and DVD-RW to record a large amount of video data such as TV to perform a variety of multimedia complex functions It is being developed as a video composite device, and accordingly, power control has emerged as an important problem.

However, in the conventional digital broadcast receiver having a loop through function, a preset power of ever power 12V is always supplied for loop through switching regardless of the presence or absence of an external device in the standby mode. It is becoming. Therefore, even when the external device is not connected, even though the loop through function is not required, power is continuously supplied and power is unnecessarily wasted.

Accordingly, an object of the present invention is to automatically control the 12V power required to drive the loop through function using the slow switching pin of the skat jack in the digital broadcasting receiver according to the connection of the external device, thereby unnecessary consumption in the standby mode. The present invention provides a method for reducing power consumption in a standby mode in a digital broadcast receiver having a loop through function to prevent power.

The present invention for achieving the above object is a method for reducing power consumption in the standby mode in a digital broadcast receiver, (a) to the slow switching pin of the skat jack for power control according to the presence or absence of external devices in the standby mode of the receiver (B) determining whether the power is applied to the slow switching pin, and determining whether the external device is connected to operate a loop through by supplying a 12V version one, and (c) And determining that the external device is not connected when the power is not applied to the slow switching pin, to cut off the supply of the 12V version one.

Hereinafter, with reference to the accompanying drawings will be described in detail the operation of the preferred embodiment according to the present invention.

1 is a schematic block diagram of a digital broadcast receiver equipped with a PVR function to which an embodiment of the present invention is applied.

Referring to FIG. 1, first, the key input unit 118 and the remote controller 126 generate a key data signal according to a user's key operation and apply the generated key data signal to a micom 116. The memory unit 120 stores an operation program for operating the digital broadcast receiver, and stores and outputs various program information output from the tuner unit 100 under the control of the microcomputer 116.

The tuner 100 tunes and receives a bit stream of a channel corresponding to the tuning control signal of the microcomputer 116 among the bit streams received from the terrestrial wave or satellite. The channel decoder 102 decodes the signal selected from the tuner unit 100 in a VSB, QPSK, QAM, or the like manner according to a transmission method, and applies the demultiplexed signal to the demultiplexer 104.

The demultiplexer 104 receives the digital stream decoded by the channel decoder 102, divides the video stream into video, audio, and additional information streams, and applies the decoded video stream to the MPEG-2 decoder 106. Then, the MPEG decoder 106 separates and decodes the broadcast signal provided from the demultiplexer 104 into an audio signal and a video signal, and then performs a predetermined signal processing process through the video / audio processing units 108 and 110 to display the TV receiver display unit ( 112) to be displayed on the screen.

The video processor 108 receives the video signal decoded and output from the MPEG-2 decoder 106 and converts the video signal into a displayable image signal on the screen of the display 112 of a TV receiver such as a CRT, PDP, LCD, etc. The audio processor 110 receives an audio signal decoded from the MPEG-2 decoder 106 and reproduces the audio signal through the audio output unit such as the speaker 114. The IR receiver 124 receives an operation command of a remote controller operated by a user and applies it to the microcomputer 116.

The microcomputer 116 controls the overall operation of each part of the digital broadcast receiver according to the operation program stored in the memory unit 120, and the remote controller 126 input from the key data signal from the key input unit 118 and the IR receiver 124. According to the key data from the control signal for generating a corresponding function is generated and applied to the function unit. That is, for example, the tuner 100 provides a tuning control signal for tuning a broadcast channel selected by a user, and generates a decoding control signal for decoding the tuned broadcast signal.

In addition, the microcomputer 116 checks whether the external device is connected by checking whether the power is supplied to the slow switching pin of the scart jack for power control according to whether or not the external device is connected in the standby mode of the receiver according to an embodiment of the present invention. If not, cut off the 12V version supply to the skatjack slow switching pin to reduce power consumption.

FIG. 2 is a flowchart illustrating an operation control flow of preventing power waste by turning on / off an aversion one according to whether an external device is connected by checking a power supply of a skat jack in a digital broadcasting receiver according to an exemplary embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2.

First, when the power is turned on by the user, the microcomputer 116 turns on the power of the receiver set in step S200 and enters the standby mode to wait for the user's key input.

Subsequently, the microcomputer 116 checks whether power is applied to a slow switching pin of the scart jack in step S202 to control power according to whether an external device is connected to the external device.

At this time, the above scat jack is generally composed of internationally standardized form by collecting the IN / OUT terminals of various functions connected to the external device in one component, the slow switching pin of the above scat jack is usually not connected to the external device Is 0V, and when connected to external device, it is checked to 6 ~ 12V.

Therefore, when the microcomputer 116 determines that an external device is connected to the scart jack slow switching pin in step (S202), it is determined that an external device is connected to the scart jack slow switching pin. It is supplied to the jack, and the loop through (loop through) to operate in step (S206).

However, in contrast, when the microcomputer 116 is inspected in step S202 that power is not applied to the scart jack slow switching pin, the microcomputer 116 determines that an external device is not connected to the scart jack in step S208. Even though it does not need the loop through function by turning off the version 1V which is supplied to the skat jack, the version 1 is continuously supplied to prevent unnecessary waste of power.

As described above, in the present invention, a 12 V power supply required for driving a loop through function using a slow switching pin of a scart jack in a digital broadcast receiver having a loop through function is connected to whether or not an external device is connected. Therefore, by automatically on / off (on / off) control, it is possible to prevent unnecessary power consumption in the standby mode.

Meanwhile, in the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the invention should be determined by the claims rather than by the described embodiments.

As described above, in the present invention, a 12 V power supply required for driving the loop through function by using the slow switching pin of the scart jack in a digital broadcasting receiver having a loop through function is automatically connected depending on whether an external device is connected. By controlling the on / off, there is an advantage that can prevent unnecessary power consumption in the standby mode.

Claims (3)

As a method of reducing power consumption in standby mode in a digital broadcasting receiver, (a) checking whether the power is supplied to the slow switching pin of the scart jack to control power according to whether an external device is connected in the standby mode of the receiver; (b) when the power applied to the slow switching pin is detected, determining the connection of the external device and supplying operating power having a predetermined voltage level to operate the loop through; (c) determining that the external device is not connected when the power is not applied to the slow switching pin, and shutting off the supply of a predetermined operating power; A method for reducing power consumption in standby mode in a digital broadcasting receiver including a. The method of claim 1, In the step (b), the predetermined operating power source, the power consumption in the standby mode in the digital broadcast receiver, characterized in that the version of 12V version. The method of claim 1, In the step (b), when the voltage of the predetermined predetermined reference voltage or more is detected from the slow switching pin, the connection of the external device is determined, the method of reducing power consumption in the standby mode in the digital broadcasting receiver.

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