KR20090106696A - Method and apparatus for power controlling a image display device - Google Patents

Abstract

PURPOSE: A method and an apparatus for controlling power of an image display device are provided to turn off power of the image display device or operate the image display device in idle mode if broadcasting ends even though a separate user request signal does not exist, thereby extending lift time of the image display device and reducing power loss. CONSTITUTION: A method for controlling power of an image display device comprises the following steps. A broadcasting signal including broadcast information is received from the outside. Normal wave broadcasting information of broadcasting is checked in received broadcasting information. Power of the image display device is turned off at a time when a condition of the normal wave broadcasting information is matched among output broadcasting signals.

Description

Power control apparatus and method for an image display device {Method and apparatus for power controlling a image display device}

The present invention relates to an image display device, and a method and an apparatus for controlling power of an image display device.

Recently, with the development of analog and digital technologies, electronic products with advanced functions are rapidly spreading. However, such an increase in electronic products is increasing the use of power, especially in the case of home appliances used in everyday life, resulting in economic losses due to power consumption.

In particular, in the case of a video display device, that is, a television, although the broadcasting time is terminated, the image display device, that is, the television, operates continuously. 1 illustrates an example of a screen displayed when a conventional broadcast ends. In the case of (a) is an example of the screen during the wave broadcasting according to the end of the regular broadcast according to the analog broadcast, (b) is a diagram of a screen during the wave broadcasting according to the digital broadcasting.

In the case of analog broadcasting, when a wave arrives, the screen performing the screen adjustment mode is displayed, or in the case of digital broadcasting, the content of the received broadcasting signal is displayed. Therefore, although there is no broadcast signal received from the broadcasting station, the television continuously displays a specific screen or maintains the power on state even if it is not displayed.

Therefore, the consumption of power is continuously wasted, and the burden of enormous cost is added to the user.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to reduce power consumption by controlling power of an image display device.

Therefore, the present invention as described above is a step of receiving a broadcast signal including broadcast information from the outside, confirming the wave broadcasting information of the broadcast from the received broadcast information, meets the conditions of the wave broadcasting information of the broadcast signal output And turning off the power of the video display device at the time point.

In addition, the present invention as described above, the tuner unit for receiving a broadcast signal including broadcast information from the outside, the image of the received broadcast signal and the memory unit for storing the corresponding broadcast information, and outputs the broadcast signal received through the tuner, A display unit for outputting the wave broadcasting information, a power unit for turning off the power when the wave broadcasting time arrives, checking the wave broadcasting information included in the received broadcasting information, and turning off the power supply of each component at that time Characterized in that it comprises a control unit for controlling to.

As described above, the present invention has the effect of extending the power loss and life of the video receiver by operating the power of the video display device in the off or standby mode when the broadcast is terminated even if a separate user request signal does not exist. Can have

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

2 is a block diagram of a video display device to which an embodiment of the present invention is applied. Hereinafter, an image display device for implementing an embodiment will be described in detail with reference to FIG. 2.

The image display apparatus 100 to which the present invention is applied includes a receiver 110, a processor 120, an outputter 130, a controller 140, a memory 150, a power supply 160, and an interface 170. It may be provided.

The receiving unit 110 may include an external signal input unit 111 and a tuner unit 112, and the processing unit 120 may include an image / audio signal switching unit 121, an A / D converter 122, and an MPEG decoder. And an image / audio signal processor 123 and an image memory unit 124, wherein the output unit 130 includes an image signal output unit 131, a display unit 132, and an audio signal output unit 133. And a speaker 134.

The external signal input unit 111 receives a signal received from an external device such as a digital versatile disk (DVD), a set top box, a camcorder, or the like, and provides the signal to the video / audio signal switching unit 121.

The tuner 112 tunes at least one channel according to a control signal of the controller 140 and decodes or separates the video / audio / data signals received through the tuned channel to switch the video / audio signal switch 121. ) And so on. For reference, the data signal includes electric program guide (EPG) information including information such as a start time and an end time of a broadcast program broadcasted on a channel.

In addition, the data signal may be received at each channel switching time or every predetermined period, or may receive broadcasting information of all channels every predetermined period when the user turns on the image display device 100.

In an embodiment of the present invention, the start time information of the wave broadcasting included in the EPG information and the end time of the wave broadcasting, that is, the information about the broadcast start time, are included.

The data signal may be decoded into data information by decoding, and program control information, which is at least a part of the information, is transmitted to the controller 140 directly or indirectly, and the controller 140 is broadcasted in the current channel using the same. It is possible to search for a channel dealing with the same content as the existing content. The search for another channel using data information is a data use step.

The tuner unit 112 includes an analog tuner 112a for receiving analog signals, a digital tuner 112c for digital signals, an analog decoder 112b for decoding analog signals, and a digital decoder 112d for decoding digital signals. can do.

The video / audio signal output through the digital decoder 112e has a form of a transport stream (TS).

The video / audio signal switching unit 121 selects at least one of the channels provided from the external signal input unit 111 and the tuner unit 112 and separates the video / audio signal of the channel as necessary. Afterwards, the MPEG decoder and the video / audio signal processor 123 are provided. The video / audio signal switching unit 121 may include a demultiplexer capable of separating video / audio / data signals.

When the signal selected by the video / audio signal switching unit 121 is an analog signal, after the video signal and the audio signal of the analog signal are separated, the analog video signal is converted into a digital video signal by the A / D converter 122. The converted audio signal may be provided to the MPEG decoder and the video / audio signal processor 123, and the analog audio signal may be provided to the audio signal output unit 133. When the signal selected by the video / audio signal switching unit 121 is a digital signal, both the video signal and the audio signal of the digital signal may be provided to the MPEG decoder and the video / audio signal processing unit 123.

The MPEG decoder and the video / audio signal processing unit 123 reconstruct and process the video / audio stream among the output signals of the video / audio signal switching unit 121 to video / audio data, and process the processed video signal. Is provided to the video signal output unit 131, and the processed audio signal is provided to the audio signal output unit 133. In addition, the MPEG decoder and the video / audio signal processor 123 may mix the OSD data provided by the controller 140 with the restored and processed video signal.

The video memory unit 124 provides a memory area required for decoding and signal processing of the MPEG decoder and the video / audio signal processor 123. In particular, the image memory unit 124 may be used in a search step for finding another channel that broadcasts the same content as the memory unit 150. When the symbol use step and the image comparison step are performed, the content identity of two or more channels is compared. To be used.

The video signal output unit 131 may include an LVDS receiver. The video signal output from the MPEG decoder and the video / audio signal processor 123 may be output through the display module 132. The audio signal output unit 133 processes the audio signal output from the MPEG decoder and the video / audio signal processor 123 through the speaker 134.

The interface unit 170 may be, for example, a local key button attached to a remote controller or an image device, and receives various commands and information from a user, converts them into control signals, and transmits them to the control unit 140.

The power supply unit 160 supplies power for driving each component unit and the image display device, and when all the wave broadcasting times are reached according to an exemplary embodiment of the present invention, cut off all power supply or control signals of the user to the controller 140. Allow only a predetermined current to flow in. In addition, when the control unit 140 receives a signal indicating that the end of the broadcast wave is coming to the power supply to the component of the video display device to operate in the active mode (active mode) to operate the video display device 100 do.

The controller 140 controls the tuner unit 112, the video / audio signal switching unit 121, the MPEG decoder and the video / audio signal processing unit 123, and controls other components of the video device 100 as necessary. Can be designed and connected to do so.

The controller 140 may store the video / audio signals output from the video / audio signal switching unit 121, the MPEG decoder, and the video / audio signal processing unit 123 in the memory unit 150, and in the memory unit 150. The stored video / audio signal may be read and provided to the MPEG decoder and the video / audio signal processor 123.

The controller 140 also checks the broadcast information included in the broadcast signal flowing through the tuner unit 110 according to an embodiment of the present invention, and turns on the power of the image display device according to the wave broadcasting information included in the broadcast information. Controls the on / off function.

The memory unit 150 includes a control memory unit 152 and a data memory unit 154. The control memory unit 152 stores information input by a user or data generated and managed by the controller 140. In addition, the data memory unit 154 stores a data, a broadcast signal, and the like, received from the outside by a user request.

The memory unit 150 according to an embodiment of the present invention stores a broadcast signal received from the outside and performs a function of storing broadcast information included in the broadcast signal, in particular, wave broadcasting information.

As described above, the image display device 100 to which the present invention is applied checks the information of the wave wave by referring to the broadcast information included in the broadcast signal received from the outside through the tuner unit 110, and the image display device at the time of the wave wave broadcast. It includes a control unit for turning off the power or operating in the standby mode, and a display unit for outputting the information and the power supply unit.

Hereinafter, the power control operation of the image display device according to an embodiment of the present invention will be described in detail with reference to FIGS. 3 to 4.

The control unit 140 of the image display apparatus 100 controls to operate in an image output mode in which the broadcast signal received through the tuner unit 110 is output through the display unit 132 and the speaker 134 (step 305). )

When a channel change request is generated from the user through the interface unit 170 while the image output for the channel designated by the user occurs, the controller 140 changes the channel and broadcast information about the channel to the data memory unit 152. Save (step 315).

The broadcast information may include EPG information and may include wave broadcast information including start and end times for the wave broadcast.

Therefore, the controller 140 stores the broadcast information on the changed channel and checks the wave broadcasting information including the start and end time of the wave broadcasting for the channel (step 320).

FIG. 4 shows an example of program coding including contents of the wave broadcasting included in the broadcasting information. The information on the wave broadcasting received through the broadcasting signal includes time information of the wave broadcasting as shown in (a) and (b). ) Title information. That is, the title information of the broadcast is started as "wave broadcasting", and according to the information on the start time of the wave broadcasting, the controller 140 recognizes as the start point of the wave broadcasting when it arrives at the title or time of the wave broadcasting. According to an embodiment of the present invention to perform a power off operation.

As a result of the check, the controller 140 determines whether the channel being viewed arrives at the start time of the wave broadcasting. In operation 325, the controller 140 displays a screen when the channel changed by the user request arrives at the start time of the wave broadcasting. OFF (step 330), and controls to operate in the standby mode (step 335).

Alternatively, although not shown in FIG. 3, in addition to the embodiment of the present invention, the controller 140 checks the end of the wave broadcasting of the channel before operating in the standby mode. In the standby mode, since a predetermined current for receiving a user's input to the image display device is flowing into the controller 140, an operation such as a simple time count may be performed.

Therefore, when the end of the on-wave broadcast confirmed before switching to the standby mode, the power is turned on to output the broadcast to the corresponding channel to output the broadcast through the display unit 132 and the speaker 134.

In addition, according to an exemplary embodiment of the present invention, when the time of reaching the wave is reached, a message or sound notifying the user of powering off or switching to the standby mode of the image display device according to the wave broadcasting is output to the user instead of unilaterally switching to the standby mode. can do. Accordingly, when the channel change request signal is not input from the user for a predetermined time, the video display device 100 is switched off or in standby mode, or when the channel change request and other specific control signals are input from the user, the power is turned off. Do not operate in off or standby mode, but in active mode with continuous power on.

Switching to the power-off or standby mode according to the wave broadcasting may be operated by the user's setting (for example, "sleep mode").

As described above, the power control method of an image display device according to an exemplary embodiment of the present invention stores broadcast information according to a channel change from a user in an image output mode, and outputs a broadcast signal by checking information of wave broadcasting included in the stored broadcast information. When the midwave broadcasting arrives, the power of the video display device must be turned off or the standby mode can be reduced to reduce the power loss.

1 is a diagram illustrating a conventional screen display during wave broadcasting.

2 is a block diagram of an entire display device to which the present invention is applied.

3 is a flowchart illustrating a power control operation according to an embodiment of the present invention.

4 is a diagram illustrating program coding for a power supply control operation according to an embodiment of the present invention.

Claims (14)

Receiving a broadcast signal including broadcast information from the outside; Checking the wave broadcasting information of a broadcast from the received broadcast information; And turning off the power of the video display device at a point in time when the broadcast signal output satisfies the condition of the wave broadcasting information. The method of claim 1, wherein the broadcast information includes start and end time of the wave broadcasting and title information of the wave broadcasting. The method of claim 2, wherein the wave broadcasting information is identified by a title and a time. The method of claim 1, further comprising outputting an alarm informing the user of power off according to the wave broadcasting when the power is off. The method of claim 4, wherein the power is turned off when the alarm output does not receive a specific signal from the user for a predetermined time. The method of claim 1, wherein the image display device operates in a standby mode when the power is turned off. 7. The method of claim 6, further comprising: checking an end time of a wave broadcasting before power is turned off according to the wave broadcasting; And turning on the power at the end of the identified standing wave time. The method of claim 1, wherein the wave broadcasting information of the corresponding channel is checked every time a change of the channel occurs. A tuner unit configured to receive a broadcast signal including broadcast information from the outside; A memory unit which stores an image of the received broadcast signal and corresponding broadcast information; A display unit which outputs a broadcast signal received through the tuner and outputs wave broadcasting information; A power supply unit to turn off the power when the standing wave broadcast time arrives; And a control unit which checks the wave broadcasting information included in the received broadcast information and controls to turn off the power supply of each component at a corresponding time point. 10. The apparatus of claim 9, wherein the control unit controls to turn on the power at the corresponding time by checking the end time of the wave broadcasting when the power is turned off. 10. The apparatus of claim 9, wherein the controller is further configured to display information indicating power off to the display unit when the power unit is turned off according to the wave broadcasting information. The apparatus of claim 11, wherein the controller is configured to turn off the power when a control signal is not input from the user for a predetermined time after the alarm is output. 10. The apparatus of claim 9, wherein the controller checks the wave broadcasting information of the corresponding channel at each time a channel change request occurs. 10. The apparatus of claim 9, wherein the power supply unit operates in a standby mode in which power is applied only to the control unit when a signal for turning off the power according to the wave broadcasting is input from the control unit.

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