KR20070058200A - Television system for reducing standby electric power - Google Patents

Abstract

A TV system for reducing standby power is provided to reduce power consumed in a microcomputer and reduce the standby power by adding an electronic circuit for controlling a standby voltage inputted to the microcomputer in a standby state of the TV system and controlling the electronic circuit by using an IR(Infrared Ray) signal and a local key signal of a TV set. A switch control circuit(40) transmits a control signal for turning on/off the power of a microcomputer(60) according to an IR signal and a local key signal of a TV. A switch circuit(50) turns on/off a standby voltage inputted to the microcomputer(60) according to the control signal of the switch control circuit(40).

Description

TELEVISION SYSTEM FOR REDUCING STANDBY ELECTRIC POWER}

1 is a view for explaining the configuration of a television system for standby power reduction according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: standby power generation circuit

20: IR

30: local key

40: switch control circuit

50: switch circuit

60: micom

70: EEPROM

The present invention relates to a television system for standby power reduction, and more particularly, to add an electronic circuit for controlling the standby voltage input to the microcomputer in the standby state of the television system and to convert this circuit into an IR signal and a set of local key signals. The present invention relates to a television system for standby power reduction, by reducing power consumed by a microcomputer to reduce standby power.

In general, a video display device capable of displaying a video signal is a television. The commonly used television is a device for displaying a video signal by a cathode ray tube, which has been used for many years. However, such a cathode ray tube TV has a problem that power consumption is large and bulky. LCD TVs, plasma TVs, and projection TVs using LCDs with improved LCDs are increasingly being used.

In such a television system, the standby power 5V is supplied to the microcomputer, the IR, and the main EEPROM in addition to the standby power supply circuit, and they play an important role that can not be disconnected from the current structure. When standby power reduction is an advantage of television sales, reducing power consumption of components that operate in standby power is the only alternative.

The present invention was devised to solve the above problems of the prior art, and adds an electronic circuit for controlling the standby voltage input to the microcomputer in the standby state of the television system and converts the circuit into an IR signal and a set of local key signals. The present invention provides a television system for standby power reduction by reducing power consumed by a microcomputer to reduce standby power.

According to an aspect of the present invention, there is provided a television system comprising: a switch control circuit for transmitting a control signal for turning on / off the power of a microcomputer according to an IR signal and a local key signal of a television; And a switch circuit for turning on / off the standby voltage input to the microcomputer according to the control signal of the switch control circuit.

In the present invention, the switch control circuit and the microcomputer is configured to connect the user to transmit and receive the active / non-active signal of the standby power reduction mode according to the standby power reduction mode selection.

In addition, the switch control circuit and the microcomputer are configured to transmit and receive a HOLD / OFF signal so that the switch control circuit operates or deactivates according to an IR signal and a local key signal input according to the ON / OFF state of the television power.

As described above, the present invention can reduce the power consumed by the microcomputer by adding an electronic circuit for controlling the standby voltage input to the microcomputer in the standby state of the television system and controlling the circuit with the IR signal and the local key signal of the set.

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

1 is a view for explaining the configuration of a television system for reducing standby power according to the present invention.

First, the microcomputer is always supplied with standby power to control the circuit operation after power-on, and consumes about 0.5W of power. This is a significant part considering that standby power is less than 2W. When the power is turned on, the microcomputer operates the television set by receiving the power on / off signal from the IR or local key, and saves a few user-specified settings and reflects them when the power is turned on. Therefore, standby power must be connected in the set standby state.

Conversely, replacing these two functions with a circuit that uses lower power can save a lot of standby power.

To this end, the present invention, as shown in Figure 1 to reduce the power consumption in the standby state of the television set, the general set of IR 20, local key 30, microcomputer 60, EEPROM 70 In addition to the standby power generation circuit 10, a switch circuit 50 that can be implemented by a few transistors capable of turning on / off power input to the microcomputer 60 and a trigger circuit for controlling the switch circuit 40. And a control circuit composed of several logic circuits.

Power ON IR input signal and power ON key input are converted into high / low signal in the control circuit and output high / low signal that turns on the switch through the logic of this high / low signal. The switch is activated by this signal. When the power is turned off, the switch is turned off through the control circuit using the high / low signal which outputs the switch off signal from the microcomputer after a certain time.

Power ON IR input signal inputs high signal during the time to turn on the control circuit composed of trigger circuit, etc. and generates high / low signal using it to operate the switch circuit by using it. Is a high / low signal, so if you use it as a signal to input to the logic circuit, you can make it as a high / low signal used for ON / OFF. The final control can be made to turn the switch ON / OFF. Set OFF is in charge of micom and it is same as general set OFF operation, but set ON / OFF operation can be easily realized only by auto ON function by switching off using HOLD / OFF signal in addition to set OFF signal.

In the above configuration, the user-specified set setting is stored in the EEPROM and replaced by a method of reading the set at the start of the set. When using this method, the standby power is not supplied to the microcomputer, and the standby power is input only to the IR and local keys. As the load is reduced, standby power will be reduced.

Such a configuration may be added as an optional action for the user to select. In this case, it is possible to guarantee the compatibility with general operation by controlling the use or nonuse of the control circuit.

On the other hand, a set of IR outputs can be used to turn off the microcomputer power supply, but independent IR outputs can be used to turn the power ON / OFF only and a simple configuration can be guaranteed at no additional cost. In addition, the power input to the EEPROM can be controlled in the same way. In this case, the data should be stored in the area that is mostly not erased when the power is turned off.

As described above, the present invention reduces the power consumed by the microcomputer by adding an electronic circuit for controlling the standby voltage input to the microcomputer in the standby state of the television system and controlling the circuit with an IR signal and a set of local key signals. There is an advantage to this.

Claims (3)

In a television system, A switch control circuit for transmitting a control signal for turning on / off the power of the microcomputer according to the IR signal and the local key signal of the television; A switch circuit for turning on / off a standby voltage input to the microcomputer according to a control signal of the switch control circuit; Television system for standby power reduction, characterized in that further comprises. The method of claim 1, The switch control circuit and the microcomputer is configured to connect the user to transmit and receive the active / non-active signal of the standby power reduction mode according to the standby power reduction mode selection, the television system for standby power reduction. The method of claim 1, The switch control circuit and the microcomputer are configured to connect to transmit and receive a HOLD / OFF signal so that the switch control circuit operates or deactivates according to an IR signal and a local key signal input according to an ON / OFF state of the television power. Television system for power reduction.

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