CN201270557Y - LCD TV with power saving mode - Google Patents

Abstract

A liquid crystal television with a power saving mode comprises: an image processor, comprising a control unit and an image processing unit, wherein the image processing unit receives an image signal from an audio and video source to perform decoding and image scaling processing; an audio decoder, receiving an audio signal from an audio and video source and performing decoding; a liquid crystal module, comprising a liquid crystal panel and an inverter, wherein the liquid crystal panel receives and plays the image signal processed by the image processor, and the inverter generates a high-voltage power supply to drive the backlight source of the liquid crystal panel; a power supply device, which supplies power to the liquid crystal module; and a switch circuit, which is connected between the power supply device and the inverter of the liquid crystal module. When the user does not need to watch the image screen, the liquid crystal television with a power saving mode of the utility model can transmit an external instruction to the control unit of the image processor, so that the control unit cuts off the switch circuit to turn off the backlight source of the liquid crystal panel, thereby achieving the purpose of power saving.

Description

LCD TV with power saving mode

technical field

The utility model relates to a liquid crystal television, in particular to a liquid crystal television with a power-saving mode.

Background technique

Television is the main carrier for people to obtain information and entertainment, and it is also an essential household appliance for every family. People rely on TV, making TV an indispensable part of life. Through TV, people can continuously obtain instant news , lifestyle information, and enjoy plenty of entertainment.

However, the life of modern people is busy, and they are often busy with work or chores when they come home from work, or women have to do housework, etc., so they may not have time to sit down and enjoy watching TV. But even if they don’t have time to sit down and watch TV, most people are still used to turning on the TV when they get home. On the one hand, the sound of the TV can make the home lively and not deserted. Doing housework and so on, so this kind of scattered watching TV has become a common phenomenon, so that the existence function of TV only focuses on providing background sound at certain times, while the image picture becomes relatively less necessary.

Recently, due to energy shortages, world oil prices and raw material prices have continued to rise, making energy conservation and carbon reduction a hot topic. How to reduce energy consumption in daily life is an issue that everyone should care about, and do our best for the earth. . Therefore, in the normal life of listening to TV instead of watching TV, if you can only keep the sound output and turn off the output of the image when you only listen to TV but not watch TV, you will be able to save a lot of unnecessary energy consumption and achieve energy saving. purpose of carbon reduction.

In view of this, the utility model develops a liquid crystal television with a power-saving mode for research and development of the currently popular liquid crystal television.

Contents of the invention

The main purpose of the present utility model is to provide an LCD TV with a power-saving mode, which can turn off the backlight tube of the LCD panel when the user does not need to watch the image of the TV, which can not only greatly reduce the power consumption of the LCD TV It can also increase the service life of the LCD TV.

In order to achieve the above object, a broad implementation form of the present utility model is to provide a liquid crystal television with a power-saving mode, which includes: an image processor, including a control unit and an image processing unit, wherein the image processing unit receives An image signal from an audio-visual source, and decodes and scales the image signal; an audio decoder receives an audio signal from an audio-video source, and decodes the audio signal; a liquid crystal module includes a liquid crystal panel and a An inverter, the liquid crystal panel receives and plays the image signal processed by the image processor, and the inverter generates a high-voltage power supply to drive the backlight of the liquid crystal panel; a power supply device supplies power to the liquid crystal module; And a switch circuit connected between the power supply device and the inverter of the liquid crystal module. When the user does not need to watch the image screen of the LCD TV, an external command can be sent to the control unit of the image processor, so that the control unit cuts off the switching circuit to close the backlight of the liquid crystal panel, so as to save energy. purpose of electricity.

The LCD TV with power-saving mode provided by the utility model can turn off the backlight tube of the LCD panel when the user does not need to watch the image screen of the TV, which can not only greatly reduce the power consumption of the LCD TV, but also increase the power consumption of the LCD TV. TV lifespan.

Description of drawings

FIG. 1 is a schematic structural diagram of a liquid crystal television with a power-saving mode of the present invention.

Wherein, the reference signs are explained as follows:

20: Image processor

201: Control unit

202: Image processing unit

21: Audio decoder

22: TV tuner

23: Multimedia audio and video input interface

24: LCD module

241: Inverter

242: LCD panel

243: Drive circuit

25: Amplifier

26: Horn

30: remote control

31: Infrared receiver

32: Operation panel

40: Power supply unit

41: switch circuit

Detailed ways

Some typical embodiments embodying the features and advantages of the utility model will be described in detail in the description of the following paragraphs. It should be understood that the utility model can have various changes in different forms, all of which do not depart from the scope of the utility model, and the description and drawings therein are used for illustration in essence, rather than for limiting the utility model. utility model.

Please refer to FIG. 1 , which is a schematic structural diagram of a liquid crystal television with a power saving mode according to a preferred embodiment of the present invention. The LCD TV with power-saving mode of the present invention mainly includes an image processor 20 , an audio decoder 21 , a TV tuner 22 , a multimedia audio-video input interface 23 and a liquid crystal module 24 .

The LCD TV has a plurality of audio-visual signal sources, wherein the TV tuner 22 is a digital or analog TV tuner, which can receive a TV signal, including a cable TV signal and a wireless TV signal, and demodulate the received TV signal to generate a image signal and an audio signal. Another type of audio-visual signal source can come from various multimedia electronic products, such as video recorders, VCD players, DVD players, accompaniment players, video cameras or computers, etc. These multimedia audio-visual signals can be received through a multimedia audio-visual input interface 23, And output an image signal and an audio signal respectively.

The image processor 20 includes a control unit 201 and an image processing unit 202 . The image processing unit 202 is connected to the TV tuner 22 and the multimedia audio-video input interface 23, and can receive image signals from the TV tuner 22 and the multimedia audio-video input interface 23, and perform decoding and image scaling processing on the image signal , and then further sent to the liquid crystal module 24 to display images on the liquid crystal panel 242 for users to watch.

Audio decoder 21 is connected to this TV tuner 22 and this multimedia audio-visual input interface 23, can receive the audio signal from this TV tuner 22 and this multimedia audio-visual input interface 23, and this audio signal is decoded, and then through an amplifier 25 amplifies the audio signal and plays the sound through a speaker 26 for the user to listen to.

The control unit 201 of the image processor 20 is connected to the image processing unit 202 , the audio decoder 21 and the liquid crystal module 24 for initialization setting and working mode setting. In addition, the control unit 201 can also receive external command signals sent by the remote controller 30 through the infrared receiver 31, or external command signals sent by the operation panel 32 of the LCD TV, such as channel switching, volume adjustment, TV or multimedia The choice of display, or the adjustment of screen color and so on.

The imaging principle of LCD TV is to emit light through the backlight system of the LCD panel, and then the driving circuit controls the light transmission degree of the liquid crystal molecules of each pixel to display images on the LCD panel. Among them, the high-voltage lamp tube of the backlight system is It works by the high voltage generated by the inverter. As shown in FIG. 1 , the liquid crystal module 24 includes an inverter 241 , a liquid crystal panel 242 and a driving circuit 243 . The liquid crystal module 24 is powered by a power supply device 40, and the inverter 241 converts the low-voltage power supply provided by the power supply device 40 into a high-voltage power supply to drive the backlight system of the liquid crystal panel 242 to light the lamp tube. The display on the liquid crystal panel 242 is controlled by the driving circuit 243 according to the image signal transmitted from the image processing unit 202 of the image processor 20 .

The power system of traditional LCD TVs is fully turned on. However, when the user turns on the TV only to provide background sound, or just to listen to music or listen to the news, and does not need to watch the images of the TV, if the backlight system of the LCD panel Leaving it on will cause unnecessary power consumption and shorten the life of the LCD TV. Therefore, the liquid crystal television of the present utility model designs a switch circuit 41 between the power supply device 40 and the inverter 241 of the liquid crystal module 24, and the conduction or cutoff of the switch circuit 41 can be controlled by the control unit 201 of the image processor 20 In this way, when the user does not need to watch the image screen of the TV, the command to close the liquid crystal panel can be sent to the control unit 201 of the image processor 20 through the remote control 30 or the operation panel 32, so that the control unit 201 will switch the power supply device 40 The switching circuit 41 connected to the inverter 241 of the liquid crystal module is turned off, so as to reduce the power consumption of the liquid crystal panel 242 during operation, and achieve the purpose of saving power.

For the user, when the power supply of the LCD TV is turned on, the initial setting of the switch circuit 41 is to present a conduction state, so the user can watch the image playback of the LCD panel and listen to the audio signal played through the speaker. However, When the user does not need to watch the image playback of the LCD panel, he can press the function button representing closing the LCD panel on the remote controller 30 or the operation panel 32 or select through the option menu to make the LCD TV in the power saving mode, reducing unnecessary power consumption. And when the user wants to watch the image picture of TV again, then can arbitrarily press the button on the remote controller 30 or the operation panel 32 (except the volume adjustment button), the switch circuit 41 can be made to conduct again, and the LCD panel 242 is restored. Image playback function. Therefore, in terms of operation, it is very convenient to switch between the normal playback mode and the power saving mode with the LCD panel turned off.

To sum up, the LCD TV with power-saving mode of the present invention can cut off the switching circuit of the power supply device for supplying power to the LCD module to turn off the backlight tube of the LCD panel when the user does not need to watch the image screen of the TV. Not only can the power consumption of the LCD TV be greatly reduced, but also the service life of the LCD TV can be increased. Therefore, the liquid crystal television provided by the utility model has great industrial value, and meets various patent requirements, so an application is filed according to the law.

The utility model can be modified in various ways by those of ordinary skill in the art, without departing from the scope of protection defined in the appended claims.

Claims (9)

1. A liquid crystal television with a power-saving mode, characterized in that it comprises: An image processor, including a control unit and an image processing unit connected to the control unit, wherein the image processing unit receives an image signal from an audio-video source, and performs decoding and image scaling processing on the image signal; An audio decoder is connected to the control unit and receives an audio signal from an audio-video source, and decodes the audio signal; A liquid crystal module, connected to the image processor, including a liquid crystal panel and an inverter connected to the liquid crystal panel, the liquid crystal panel receives and plays the image signal processed by the image processor, and the inverter generating high voltage power to drive the backlight of the liquid crystal panel; a power supply device for supplying power to the liquid crystal module; and a switch circuit connected between the power supply device and the inverter of the liquid crystal module; Wherein, the control unit is connected to the switch circuit, and when the user does not need to watch the image screen of the LCD TV, an external command can be sent to the control unit to make the control unit cut off the switch circuit to close the liquid crystal panel backlight, to achieve the purpose of power saving. 2. The LCD TV with power-saving mode as claimed in claim 1, further comprising a TV tuner, which can receive a TV signal and demodulate the TV signal to generate the image signal and the audio frequency signal, wherein the TV tuner is respectively connected to the audio decoder and the image processing unit. 3. The liquid crystal television with power-saving mode as claimed in claim 1, further comprising a multimedia audio-visual input interface, which can receive an audio-visual signal of a multimedia electronic product, and output the image signal and the audio signal, Wherein the multimedia audio-video input interface is respectively connected to the audio decoder and the image processing unit. 4. The LCD TV with power saving mode as claimed in claim 3, wherein the multimedia electronic product is a video recorder, VCD player, DVD player, music player, video camera or computer. 5. The LCD TV with power-saving mode as claimed in claim 1, further comprising an amplifier and a speaker for amplifying and playing the audio signal, wherein the amplifier is connected to the audio decoder, And the speaker is connected to the amplifier. 6. The LCD TV with power-saving mode as claimed in claim 1, further comprising a remote controller for a user to input the external command. 7. The liquid crystal television with power-saving mode as claimed in claim 6, further comprising an infrared receiver connected to the control unit, capable of receiving the external command from the remote controller, and The external command is transmitted to the control unit. 8. The liquid crystal television with power-saving mode as claimed in claim 1, further comprising an operation panel connected to the control unit, allowing a user to input the external command, and the external Commands are sent to the control unit. 9. The liquid crystal television with power-saving mode as claimed in claim 1, wherein the liquid crystal module further comprises a driving circuit, which is connected with the image processing unit of the image processor and the liquid crystal panel, and can be based on The image signal transmitted by the image processing unit controls its display on the liquid crystal panel.

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