KR100222699B1 - Power control method of a digital television - Google Patents

Abstract

end. The technical field to which the invention described in the claims belongs

The present invention relates to a power supply control method for a digital television receiver.

I. The technical problem that the invention is trying to solve

The power supply is controlled to output a program quickly in response to a user's power-on keystroke.

All. Summary of Solution of the Invention

When the event of the pointing device is detected in the stand-by mode, the operating power is supplied to the tuning unit and the amp decoding unit, and the power-on key is supplied to the audio output unit, the image processing unit, and the output unit if the power-on key is input after the supply. It features.

la. Important uses of the invention

Used for digital television receivers.

Description

Power Control Method of Digital Television Receiver

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to digital television receivers, and more particularly, to a power control method for a digital television receiver.

A power supply control method of a conventional digital television receiver is as follows. First, when a user provides AC power to the digital television receiver, the digital television receiver enters a stand-by mode.

In the stand-by mode, the digital television receiver operates an auxiliary power source to perform an operation corresponding to a user's key input. The auxiliary power supply supplies driving power to the user interface portion, the microprocessor and the memory.

In the stand-by mode as described above, the digital television receiver drives the main power in response to a user's power-on key input. The main power source applies driving power to all parts of the digital television receiver.

When the main power was driven, the digital television receiver initialized the data of each part, tuned the channel watched before the power-off, and output the audio and video of the program of the channel.

In the case of a digital television receiver, however, it took approximately 10 seconds or more to initialize a TS decoder that separates a TS (Transport Stream) and an MPEG decoder that restores the TS to audio data and video data.

Accordingly, the user has to wait at least 10 seconds after the power-on command to the digital television set to output the program.

As described above, the conventional digital television receiver has a problem that it takes a long time to output a program in response to a user's power-on command.

Accordingly, the present invention relates to a power supply control method of a digital television that controls a power supply to output a program quickly in response to a power-on command of a user.

1 is a block diagram of an HDTV receiver to which the present invention is applicable;

2 is a flow chart according to a preferred embodiment of the present invention.

According to the present invention for achieving the above object, when an event of the pointing device is detected in the standby mode, the operating power is supplied to the tuning unit and the amp decoding unit, and if the power-on key is input after the supply, the audio output unit and the image are input. It is characterized by supplying power to the processing and output.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description and the annexed drawings, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. And a detailed description of known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

Referring to FIG. 1, which shows a block diagram of an HDTV receiver, which is a digital television receiver to which the present invention is applicable, the tuner 102 is a microprocessor that selects a user-selected RF channel from a broadcast received signal through the antenna 100. Tuning is performed under the control of 124. Accordingly, the tuner 102 outputs a channel tuned intermediate frequency (IF) signal, and is converted into a baseband signal by the IF module 104 and output to the channel decoder 106. The channel decoder 106 reproduces the TS by channel decoding the base band signal input from the IF module 104. The TS reproduced in this manner is separated into an audio stream, a video stream, and an additional data stream by the TS decoder 108, respectively.

The audio stream is applied to the audio decoder 110 to restore audio data, and the audio data is processed by the audio processor 112 as a voice signal and then output to the speaker 114.

The video stream is applied to the video decoder 116 and restored as video data, and the video data is applied to an On Screen Graphic (OSG) mixer 118 to provide OSG data under control of the microprocessor 124. After mixing and processing in the image processing and output unit 120 is applied to the water pipe 122 as a video signal.

The microprocessor 124 may store a program stored in the memory unit 126 in response to a command input from a keypad 128 or a pointing device 130 through a user interface 134. Perform according to. The pointing device 130 wirelessly moves the position of the pointer displayed on the water pipe 122. In addition, the pointing device 130 is provided with a vibration sensor therein to detect the movement of the pointing device 130, and provides the sensing signal according to the infrared to the remote receiver 132. The remote receiver 132 receives the infrared rays corresponding to the sensing signal and provides the sensing information to the microprocessor 124 through the user interface 134. The remote receiver 132 receives the pointing movement information according to the movement of the pointing device 132 and provides it to the microprocessor 124, and provides a sensing signal to the pointing device 132 to the microprocessor 124.

The microprocessor 124 receives an additional data stream from the TS decoder 108.

The memory unit 126 may include a read only memory (ROM) for storing a program of the microprocessor 124, a RAM for temporarily storing data according to program execution of the microprocessor 124, and various reference data. EEPROM (Electrically Erasable and Programmable ROM) for storing the data.

The power supply unit 136 supplies operating power to each part of FIG. 1 under the control of the microprocessor 124 according to the power control method according to the preferred embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIG. 2, which shows a flowchart of a power control method applicable to the HDTV receiver. First, in the standby mode of the HDTV receiver, the power supply unit 136 provides operating power to the microprocessor 124, the memory unit 126, the user interface 128, the keypad 130, the remote receiver 134, and the like. .

In the stand-by mode as described above, the microprocessor 124 proceeds to step 138. In step 138, the microprocessor 124 searches whether the sensing information is input as the user moves the pointing device 132. In this case, when the sensing information is input, the microprocessor 124 proceeds to step 140, otherwise, the microprocessor 124 maintains the standby mode.

In step 140, the microprocessor 124 commands the power supply 136 to enter the first wake-up mode. Here, the wake-up mode refers to an intermediate state for entering the power-on mode from the standby mode.

The power supply 136 applies operating power to the tuner 102, the IF module 104, the channel decoder 106, and the TS decoder 108 according to the first wake-up mode entry command.

In response to the supply of the operating power, the tuner 102, the IF module 104, the channel decoder 106, and the TS decoder 108 perform initialization, and tune the channel that the user was watching before powering off. Outputs audio and video streams for the program.

Here, the tuner 102, the module 104, the channel decoder 106, and the TS decoder 108 are called tuning units.

In the first wake-up mode, the microprocessor 124 proceeds to step 142. In step 142, the microprocessor 124 searches whether the user positions the pointing device 132 toward the water pipe 112. Here, even if the pointer of the pointing device 132 is not displayed in the water pipe 112, the microprocessor 124 searches whether the pointer of the pointing device 132 is located in the water pipe 112 as pointer movement information.

The microprocessor 124 searches whether the pointer of the pointing device 132 is located in the water pipe 112. At this time, the microprocessor 124 performs step 146 when the pointer of the pointing device 132 is located in the water pipe 112, and otherwise performs step 144.

In step 144, the microprocessor 124 searches whether the predetermined time has elapsed after entering the first wake-up mode, and if the predetermined time has elapsed, proceeds to step 154 to enter the standby mode again. do. On the contrary, if the predetermined time has not elapsed, the first wake-up mode is maintained.

In step 146, the microprocessor 124 provides the power supply 136 with a second wake-up mode entry command. In response to the second wake-up mode entry command, the power supply 136 applies operating power to the audio decoder 110 and the video decoder 116.

The audio decoder 110 and the video decoder 116 are supplied with the operating power to perform initialization, and restore and output the audio stream and the video stream.

Here, the audio decoder 110 and the video decoder 116 are referred to as an amp decoding unit.

In the second wake-up mode, the microprocessor 124 performs step 148. In step 148, the microprocessor 124 searches whether the user inputs a power-on key provided in the pointing device 132 or the keypad 130. In this case, if the user inputs the power-on key, the microprocessor 124 proceeds to step 150, otherwise, the microprocessor 124 performs step 152.

In operation 150, the microprocessor 124 provides a power-on mode entry command to the power supply 136. The power supply unit 136 supplies operating power to the audio output unit 112, the OSG mixer 118, the image processing and output unit 120 in response to the power-on mode entry command. The recovered audio data and video data from the decoder 116 are output to the speaker 114 and the receiver tube 122.

In step 152, the microprocessor 124 searches whether a predetermined time has elapsed after entering the second wake-up mode. When the microprocessor 124 enters the second wake-up mode and the predetermined time has elapsed, the microprocessor 124 proceeds to step 154 and enters the standby mode again. Otherwise, the microprocessor 124 maintains the second wake-up mode. .

As described above, when the movement of the pointing device is detected, the present invention initializes by providing operating power to the tuner and the IF module, the channel decoder, the TS decoder, and the like. When the user points to the receiver as the pointing device, the operation power is supplied to the audio decoder and the video decoder, which are MPEG decoders, to be initialized.

Then, when the user inputs the power-on key, the audio output unit and the image processing and output unit are supplied with power to output the program.

As described above, the present invention performs a negative initialization that takes a long initialization time before the user's power-on key input. Accordingly, the program can be output quickly in response to the user's power-on key input.

As described above, the present invention performs the initialization of the unit that takes a long initialization time before the user's power-on key input. Accordingly, there is an advantage in that a program is outputted quickly in response to a user's power-on key input.

Claims (5)

In the power control method of a digital television receiver, when an event of a pointing device is detected in a standby mode, an operating power is supplied to a tuning unit and an amp decoding unit, and an audio output unit and an image are input when a power-on key is input after the supply. A power control method for a digital television receiver, characterized by supplying power to a processing and output unit. The digital method of claim 1, wherein the power control method further comprises, if the user does not input the power-on key for a predetermined time after detecting the event of the pointing device, entering the standby mode again. Power control method for a television receiver. In the power control method of a digital television receiver, when a movement of a pointing device is detected in a standby mode, an operation power is supplied to a tuning unit to perform initialization, and an audio stream and a video stream of a channel previously watched by a user are performed. If the pointer of the pointing device is located in the water pipe while the operating power is supplied to the tuning unit, the operating power is supplied to the amp decoding unit to perform initialization and restore the audio stream and the video stream to restore the audio. Outputs data and video data, and when a user inputs a power-on key while providing operating power to the amp decode unit, the operating power is supplied to the audio output unit and the image processing and output unit according to the audio data. Output audio and video according to the video data Power control method for a digital television receiver, characterized in that. The method of claim 3, wherein the power control method further comprises, if the pointer is not located in the water pipe within a predetermined time after providing the operating power to the tuning unit, entering the standby mode again. Power control method of a digital television receiver. The method of claim 3, wherein the power control method further comprises entering the standby mode again if the power-on key is not input within a predetermined time after providing the operating power to the amp decoding unit. Power control method of a digital television receiver.

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