KR19980023253A - Television receiver with power saving function - Google Patents

Abstract

The present invention relates to a television receiver having a power saving function that can reduce power consumption by cutting off the power of the television receiver when a video signal input through the video input terminal in the video mode is not detected for a predetermined time. A television receiver having a relay for; A video signal detector for searching for the presence of a video signal and outputting an unsigned signal when a signal is input; a mode storage unit for storing an operation mode of a television mode or a video mode selected by a user with a predetermined flag; And a control means for turning off the relay when the non-signal signal is input from the video signal detector in the mode.

Description

Television receiver with power saving function

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver, and more particularly, to a television receiver having a power saving function capable of reducing power consumption by turning off the power of the television receiver when a video image signal input through an external input terminal in a video mode is not detected for a predetermined time. It is about.

1 is a functional block diagram showing a schematic configuration of a typical television.

In the drawing, reference numeral 1 denotes an antenna, 2 denotes a tuner which tunes a predetermined broadcast signal from a broadcast signal received through the antenna 1 under the control of the controller 10 to be described later, and 3 denotes this tuner 2 IF amplification section for amplifying the IF signal output from the (4), 4 is a surface acoustic wave for separating the image intermediate frequency signal (PIF) and the audio intermediate frequency signal (SIF) from the IF signal output from the IF amplifier (3), for example A P / S separation unit such as a filter, 5 is an audio detector for detecting an audio signal from the SIF signal, and 6 is an image detector for detecting an image signal from the PIF signal.

Further, reference numeral 7 denotes a remote control unit for selecting a channel desired by the viewer or performing TV / AV mode switching, etc. 8 denotes a receiving unit for converting an infrared signal from the remote control unit 7 into an electric code signal. Is a channel memory in which predetermined channel data is stored, 10 is a control unit for controlling the entire apparatus according to the remote control signal from the remote control unit 7, 11 is OSD pattern data for displaying an operation state of a television to a viewer. OSD generating unit.

In the meantime, reference numeral 12 denotes an external AV device such as a video cassette recorder (VCR) or a laser disc player, and 13 denotes the voice detector 5 and the image detector 6 according to the switching signal from the controller 10. And a switching unit for selectively outputting audio and video signals from the external AV device 12 and audio and video signals from the external AV device 12.

In addition, although reference numeral 14 is not shown for the audio signal output from the switching unit 13, the voice such as bass, treble, volume, etc. in accordance with the control signal from the control unit 10. 15 is a voice amplifier which amplifies the voice signal processed by the voice processor 14 and outputs it to the speaker.

Although reference numeral 16 is not shown for the image signal output from the switching unit 13, the color, tint, brightness, etc. according to the control signal from the control unit 10; Is an image processing unit that outputs R (Red), G (Green), B (Blue), and luminance (-Y) signals corresponding to the image signal, and 17 denotes a color tone signal output from the image processing unit 16 ( A mixer for mixing and outputting the R, G, B) and luminance (-Y) signals and the R, G, B, and OSD blanking signals (Y ') output from the OSD generator 11, 18 is the mixer (17). A CRT driver for driving a CRT on the basis of the R, G, B and luminance (-Y) signals output from the same.

In addition, reference numeral 19 is a power plug, reference numeral 20 is a standby power unit for supplying standby power to the control unit 10, 21 is a relay for controlling input power input to the overall device, 22 is the control unit 10 A relay driver for driving the relay 21 according to the control signal of the).

That is, in the above-described television, when the viewer turns on the television, the control unit 10 supplies power to the entire apparatus by driving and controlling the relay 21, and then the user uses the remote controller 7. When a specific channel is selected, the control unit 10 reads out the channel data from the channel memory 9 and performs channel tuning by tuning and controlling the tuner based on the channel data.

In addition, when the user inserts the video tape into the VCR, selects the video mode by using an input means such as the remote controller 7, and then presses a predetermined play key PLAY for performing the video tape playback operation. The control unit 10 controls the switching unit 13 to block the broadcast signal input through the tuner 2 and to output the video signal from the VCR.

Then, after completing the viewing of the videotape by playing the videotape as described above, the user generally switches to the television mode to watch a broadcast or to turn off the television.

In this case, to finish watching the videotape in the video mode and then watch the broadcast of the television, first press the stop key of the videotape, and then switch to the television mode, and then use the input means such as the remote controller 7 to Since the broadcast viewing is possible only when the user selects the button, this multiple key operation becomes a cumbersome process for the user.

In addition, if the video tape ends while the user falls asleep or is away while watching the video tape, the operation mode of the television is set to the video mode. The operation of the video mode is performed, which is a very large power loss.

Accordingly, the present invention has been made in view of the above-described circumstances. If the video image signal input through the external input terminal in the video mode is not detected for a certain time, it is possible to reduce unnecessary power consumption by switching to the television mode or cutting off the power. It relates to a television receiver with a power saving function.

1 is a functional block diagram showing a schematic configuration of a typical television.

2 is a functional block diagram showing a configuration of a television receiver having a power saving function according to the first embodiment of the present invention.

FIG. 3 is an operation flowchart for explaining the operation of the apparatus of FIG. 2. FIG.

Fig. 4 is a functional block diagram showing the configuration of a television receiver having a power saving function according to the second embodiment of the present invention.

Fig. 5 is a functional block diagram showing the configuration of a television receiver having a power saving function according to the third embodiment of the present invention.

FIG. 6 is a view showing the video signal detector 32 in FIG.

* Explanation of symbols for the main parts of the drawings

1 antenna 2 tuner

3: IF amplification part 4: P / S separation part

5: voice detector 6: image detector

7: remote control unit 8: receiving unit

9: Channel Memory 10, 30, 40, 50: Control Unit

11: OSD generation unit 12: external AV device

13 switching unit 14 voice processing unit

15: audio amplifier 16: image processing unit

17 mixer 18 CRT drive unit

19: power plug 20: standby power unit

21: relay 22: relay drive unit

31: mode storage unit 32: state storage unit

33: timer 34: video signal detector

41: tone generator 51: last channel memory

R1, R2, R3, R4: Resistor TR: Transistor

C: condenser

A television receiver having a power saving function according to the present invention for realizing the above object comprises: a television receiver comprising a relay for controlling input power; A video signal detector for searching for the presence of a video signal and outputting an unsigned signal when a signal is input; a mode storage unit for storing an operation mode of a television mode or a video mode selected by a user with a predetermined flag; And a control means for turning off the relay when the non-signal signal is input from the video signal detector in the mode.

That is, according to the above configuration, when the video signal is not input for a predetermined time in the video mode, unnecessary power consumption can be reduced by automatically switching to the television mode or turning off the power of the television.

Next, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 2 is a functional block diagram showing the main components of a television receiver having a power saving function according to the first embodiment of the present invention. In FIG. 2, the same parts as in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the drawing, reference numeral 31 denotes a mode storage means for storing an operation mode of a television, for example, a video mode or a television mode, and reference numeral 32 denotes a no-signal in a video mode, for example, in accordance with a control signal of the controller 30 to be described later. A state storage unit for storing a predetermined flag state with respect to whether it is a state or a signal state.

Further, reference numeral 33 is a timer that counts predetermined time data and outputs a signal of a predetermined level when the count value reaches a predetermined count value, and reference numeral 34 searches for a video signal input through the switching unit 13. When the video signal is not present and the video signal does not exist, the video signal detection unit 30 outputs a signal of a predetermined level to the controller 30 to be described later.

Next, the operation of the apparatus having the configuration shown in FIG. 2 will be described using the operation flowchart of FIG. 3.

First, when a user inputs a power on button of the remote controller 7, the controller 30 drives the relay driver 22 to turn on the relay 21 to supply voltage to the entire apparatus to broadcast signals. (Step ST301, step 302). Subsequently, when the user inserts the video tape and selects the video mode using the remote controller 7, the control unit 30 sets the mode storage unit 31 to the video mode and the switching unit 13. ) To control the switching to block the broadcast signal and output the video signal (ST303, step 304).

Subsequently, when the play key PLAY of the remote controller 7 is input while the television is set to the video mode (step ST305), the controller of the VCR (not shown) performs a series of playback operations (step ST306). ).

6 is a diagram illustrating the configuration of the video signal detector 32. When the video signal is not input from the VCR, the voltage applied to the resistor R4 does not exist, so that the transistor TR is turned off. As the signal is output from the collector terminal of the transistor TR, all voltages except for the drop caused by the resistor R1 are output, so that a high level signal is applied to the controller 30, for example. .

In addition, when the video signal is input from the VCR, the voltage dropped through the resistor R4 is charged through the capacitor C, but when the energization voltage of the transistor TR exceeds, the transistor TR is turned on to turn on the transistor TR. The low signal is applied to the controller 30 from the collector end of.

After the step ST306, the controller 30 monitors the input of the signal for the non-signal to which the video signal is not input to the video signal detector 34 in the video mode state (step ST307). When the output signal of the predetermined level is inputted, the controller 30 sets the state storage unit 32 to a predetermined flag state for the non-signal state and drives the timer 33 to drive and count the time. (ST308).

Here, the no signal of the video signal is generated in a section in which the video and audio signals do not exist after the signal section of the video tape ends, so that the image output to the CRT is processed as a black screen.

At this time, the timer 33 outputs a signal of a predetermined level to the controller 30 when the predetermined count value is counted. When the output signal of a predetermined level is input from the timer 33 (step ST309), the controller 30 controls the relay driver 22 to suppress the driving of the relay 21 to turn off the power of the television (ST310).

Therefore, according to the above configuration, if the video mode is not terminated but the video mode is not released and the input state of the non-signal continues for a predetermined time, power loss can be reduced by automatically turning off the television.

In addition, a television receiver having a power saving function according to the present invention has the same effect as having a tone generator 41 for generating a predetermined tone sound in accordance with a control signal of the controller 40 for controlling the overall apparatus as shown in FIG. Will be obtained.

That is, in the above configuration, when the output signal of a predetermined level for no signal input is input from the video signal detector 34 while the mode storage unit 31 is set to the video mode, the state storage unit 32 is used. ) Is set to the no-signal mode, and the timer 33 is driven to control to count a predetermined time.

Subsequently, when a predetermined level signal for a predetermined count value is input from the timer 33, the controller 40 drives the tone generator 41 to control the speaker to output a predetermined tone sound.

Therefore, if the video mode is terminated and the video mode is not released and the input state of the non-signal continues for a predetermined time, the user can recognize this by outputting an alarm sound with a predetermined tone tone.

FIG. 5 is a functional block diagram showing the configuration of a television receiver having a power saving function according to a third embodiment of the present invention. In FIG. 5, reference numeral 51 denotes a last channel for storing channel information finally tuned by a user. It is a memory, and reference numeral 50 is a control unit for controlling the entire apparatus.

That is, in the device having the above-described configuration, when the mode storage unit 31 is set to the video mode and the output signal of a predetermined level for no signal input is input from the video signal detector 34, the state storage is performed. In addition to setting the unit 32 in the no-signal mode, the timer 33 is controlled to count a predetermined time.

Subsequently, when a predetermined level signal for a predetermined count value is input from the timer 33, the controller 40 switches the switching unit 13 to cut off the video signal and output the broadcast signal. The channel data finally tuned from the memory 51 is read out, and the tuner 2 is tuned and controlled based on this channel data to tune the broadcast channel.

Therefore, if the video mode is terminated and the video mode is not canceled and the input state of the no signal continues for a predetermined time, it is automatically switched to the television mode, thereby avoiding the cumbersome key operation by switching the operation mode.

In addition, this invention is not limited to the said Example, It can variously deform and implement within the range which does not deviate from the technical summary of this invention.

As described above, according to the present invention, when the video image signal input through the external input terminal in the video mode is not detected for a predetermined time, the television receiver having a power saving function to reduce power consumption by turning off the power of the television receiver. It can be realized.

Claims (4)

A television receiver having a relay for interrupting an input power source; A video signal detector for searching for the presence of a video signal and outputting a non-signal signal when no signal is input; A mode storage unit for storing the operation mode of the television mode or the video mode selected by the user with a predetermined flag; And a control means for turning off the relay when a non-signal signal is input from the video signal detector in the video mode. The method of claim 1, And a timer for outputting a resultant signal when a predetermined counting value is reached by executing a predetermined counting operation, The control means drives the timer to execute the counting operation when the non-signal signal is input from the video signal detector, and turns off the relay when a predetermined result signal is input from the timer. Television receiver. The method of claim 1, Further comprising a tone generating unit for generating and outputting a predetermined tone tone, And the control means controls to output a predetermined tone sound by controlling the tone generator when the non-signal signal is input from the video signal detector. The method of claim 1, A switching unit for switching switching of a broadcast signal or a video signal; And further including a last channel memory for storing channel data for the channel finally selected by the user. The control means, when the non-signal signal is input from the video signal detector, switching the switching unit to cut off the video signal, and pre-intermediate channel based on the channel data of the last channel memory, television receiver with power saving function .