KR100274214B1 - Power control appaaratus in a system using a remote controller - Google Patents

Abstract

The power supply control system of the system using the remote controller is to reduce power consumption in the standby state. The present invention provides an auxiliary power supply for supplying power to some systems receiving a signal from a remote controller in a standby state, a main power supply for supplying power to the entire system in a power "on" state, and the system as a whole. The microcomputer to be controlled, the infrared receiver receiving the signal transmitted from the remote controller, the local switch corresponding to the power on / off switch operated by the system, and the power supplied to the microcomputer by the signal received from the remote controller. And a main power control unit for controlling the operation of the main power unit under the control of the microcomputer. Therefore, the present invention has the effect of reducing the power consumption by cutting off the power applied to the microcomputer in the standby state by the microcomputer power supply control unit, by reducing the power consumption in the standby state by using a transformer or the like It is possible to configure the cost reduction effect and the effect of reducing the occurrence of defects due to external influences.

Description

Power supply control system of system using remote controller

The present invention relates to a power supply control apparatus for a system using a remote controller, and more particularly, to reduce power consumption by controlling the power supplied to the system in a stand-by state. The present invention relates to a power supply control device which reduces the occurrence of defects.

Electronic systems such as TVs and VTRs that are currently used or developed are mainly remote control systems using a remote controller that enables remote control without directly operating the system.

In the remote control system using the remote controller as described above, power is continuously supplied to some components of the system receiving the signal transmitted from the remote controller in order to receive the signal of the remote controller even when the main power of the system is turned off. A state in which power is continuously supplied to some components of a system receiving a signal of a remote controller while the main power is turned off as described above is called a standby mode.

In addition, the remote control system using the remote controller as described above, in order to reduce the power consumption, the main power supply for supplying power to the entire system in the system power-on state, the portion that requires power supply in the standby mode, That is, an auxiliary power supply unit for selectively supplying power only to a part of receiving a remote controller signal is operated differently according to the power supply state.

Conventionally, in such a system, both the main power supply and the auxiliary power supply are configured by using a switching mode power supply (SMPS), and the microcomputer of the system is related to the system power-on state and standby-by-mode state. It was configured to always power on without.

However, the above-described conventional configuration has a limitation in reducing power consumption in the standby mode because the power is always applied to the microcomputer, and the secondary power supply unit may be configured in a low power switching mode due to the reduction in power consumption in the standby mode. Due to the configuration using the supply device, there is a problem that a defect occurs in the switchable power supply due to external influences such as rising material prices and dejection.

Accordingly, an object of the present invention is to provide a power control device for supplying power to the microcomputer only in the power-on state in the system using the remote controller to solve the above problems, that is, to turn off the power applied to the microcomputer in the standby mode. In providing.

1 is a block diagram showing a power supply control apparatus for a system using a remote controller according to the present invention.

<Explanation of symbols for main parts of drawing>

100: auxiliary power unit 200: main power control unit

300: microcomputer power control unit 400: microcomputer

500: infrared receiver 600: main power supply

700: local switch unit 210: relay

220: transistor 310: converter

320: buffer 330: integral circuit

340: switching circuit portion 350: constant voltage portion

R1: resistance OR: logic element

D1 to D3: Diode C1: Capacitor

A power supply control apparatus for a system using the remote controller of the present invention for achieving the above object, the auxiliary power supply for supplying power to the configuration of the system required to receive the signal of the remote controller in the standby state, the power supply In the "ON" state, the main power supply for supplying power to the entire system configuration, the infrared receiver for receiving infrared signals from the remote controller, and the power "ON / OFF" operation are performed. A local switch for controlling the overall operation of the system, the microcomputer being cut off in a standby state, and receiving the infrared receiver and switching the local switch from the main power supply and the auxiliary power supply to the microcomputer. A microcomputer power supply control unit that controls " on / off " of the applied power source, and the main power supply unit under the control of the microcomputer; It includes a main power control unit for controlling.

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

1 is a block diagram of a power supply control apparatus of a system using a remote controller according to an embodiment of the present invention. The apparatus shown in FIG. 1 is connected to an external power supply stage and is supplied to an auxiliary power supply unit 100 for supplying power to some component blocks receiving signals from a remote controller in a stand-by state, and to an external power supply stage. A main power supply unit 600 for supplying power to the system-wide configuration blocks in a commonly connected and powered-on state "ON", and a microcomputer 400 for controlling the overall operation of each component block of the system. The auxiliary power supply 100 is made of a transformer (T1), which is possible because the power applied to the microcomputer 400 in the stand-by state is cut off and the power consumption is very small. The main power supply unit 600 is made of a switchable power supply (SMPS) device. 1 also includes an infrared receiver 500 for receiving an infrared signal transmitted from a remote controller (not shown) and a local switch 700 for power " ON / OFF " do. Meanwhile, the apparatus of FIG. 1 is controlled by the main power control unit 200 which controls the main power supply unit 600 under the control of the microcomputer 400, the reception signal of the infrared receiver 500, and the switching operation of the local switch unit 700. The power supply unit 600 and the auxiliary power supply unit 100 is provided with a microcomputer power supply control unit 300 for controlling the "on (ON) / off (OFF) of the power applied to the microcomputer 400. The main power control unit 200 is composed of a relay 210 and a transistor 220, which is a switch for supplying / blocking the external power supply to the main power supply unit 600 through the external power supply terminal under the control of the microcomputer 400. Do it. The microcomputer power supply control unit 300 converts the AC signal output from the auxiliary power supply unit 100 and the main power supply unit 600 into a direct current form, and the infrared receiver 500 by dropping the voltage of the DC converted signal. A buffer that is connected in parallel with the infrared receiver 500 to the voltage drop resistor R1 and resistor R1 applied to the voltage drop, and receives the output of the infrared receiver 500 according to the switching of the local switch 700. It consists of 320. The converter 310 includes a rectifying diode D1 for rectifying the input power through the auxiliary power supply unit 100 and a smoothing capacitor C1 for smoothing the rectified power. The microcomputer power supply control unit 300 is also connected in parallel with the buffer 320 with respect to the resistor R1, and integrates the output of the buffer 320 and integrates the integrated circuit 330 with the resistor R1. A logic circuit (OR) that is connected in parallel with each other in parallel and performs logic operation on the respective outputs of the integration circuit 320 and the microcomputer 400, and a switching circuit unit 340 for switching the output of the converter 310 according to the logic operation result. Is made of. On the other hand, the microcomputer power control unit 300 stops the operation of the auxiliary power unit 100 and the constant voltage unit 350 for applying the power transferred through the switching circuit unit 340 to the microcomputer 400 and the main power unit 600. Is made of a diode (D3). The operation of the power supply control device having such a configuration will be described in more detail.

Referring to the operation of the main power control unit 200, the microcomputer 400 outputs a "low" level signal in the standby state, and at this time, the main power control unit 200 having a base connected to the output terminal of the microcomputer 400. Transistor 220 is in the " off " state. The relay 210 connected to the collector of the transistor 220 is " OFF " as the transistor 220 is " OFF " so that external power through the external power supply terminal is supplied to the main power supply unit 600. Block it. On the other hand, in the power "ON" state, the microcomputer 400 outputs a "high" level signal, and the transistor 220 and the relay 210 are both in the "ON" state. Then, the external power is supplied to the main power supply unit 500.

Referring to the operation of the microcomputer power supply control unit 300, the buffer 320 receives the output signals of the infrared receiver 500 and the local switch unit 700 and buffers the output signals to the integrating circuit 330. The integrating circuit 330 integrates the output signal of the buffer 320 and outputs it to the logical sum element OR. The logical sum element OR performs a logical sum operation on each output signal of the integration circuit 330 and the microcomputer 400. As a result of the operation, the switching operation of the switching circuit unit 340 is controlled. The switching circuit unit 340 is "on" (ON) / off (OFF) according to the logic operation result of the logical sum element (OR) to be supplied through the rectifying diode (D1) of the conversion unit (310) (100) The power of the main power supply unit 600 supplied through the power or the diode (D3) of the supply / cut off to the constant voltage unit (350). The constant voltage unit 350 applies the power supplied through the switching circuit unit 340 as the microcomputer 400 operating power. Here, since the microcomputer 400 outputs a "low" level signal in the stand-by state, the reception signal of the infrared receiver 500 and the output of the local switch unit 700 through the remote controller (not shown). If there is a signal, the result of the logical sum operation of the logical sum element OR becomes the "high" level to turn the switching circuit unit 340 "ON." At this time, the microcomputer 400 receives power through the switching circuit unit 340. On the contrary, if there is no reception signal of the infrared receiver 500 and the output signal of the local switch 700 through the remote controller, the logic operation result of the logic sum element OR becomes a "low" level and the switching circuit unit 340 "OFF", and thus no power is applied to the microcomputer 400. More specifically, it is as follows.

First, the operation of the system by the remote controller signal, when there is no signal received from the remote controller in the standby mode, there is no signal output from the infrared receiver 500, which causes the output of the buffer 320 And the output of the integrating circuit 330 is low, and the output of the integrating circuit 330 and the output of the microcomputer 400 are low, so the output of the logic sum element OR is all low and the logic sum element OR is low. The switching circuit unit 340 is turned off by the output of the power supply, and thus the state in which power is not applied to the microcomputer 400 is maintained.

When an arbitrary signal is received from the remote controller in the standby mode, a pulse signal corresponding to the received signal is output from the infrared receiver 500 to be input to the buffer 320, and the buffered pulse signal from the buffer 320 is output. The integrated circuit 330 is integrated and applied to the logic sum element OR as a high signal, and a high signal is output from the logic sum element OR to turn on the switching circuit 340. When the switching circuit unit 340 is turned on, the power output from the auxiliary power supply unit 100 is applied to the microcomputer 400 through the constant voltage unit 350. The microcomputer 400 receives a signal output from the infrared receiver 500 when power is applied and analyzes the contents thereof, and then ignores the signal if it is not a power-on signal, and sends a high signal to the main power controller 200 when the power-on signal is used. Output to turn on the main power control unit 200. When the main power control unit 200 is turned on, power applied from the outside is applied to the main power supply unit 600, and the output power of the main power supply unit 600 is supplied to the system while the output of the auxiliary power supply unit 100 is blocked. If the result of analyzing the output signal of the infrared receiver 500 of the microcomputer 400 is not a power “ON” signal, if there is no other signal received from the remote controller, the received signal of the infrared receiver 500 is transmitted through the remote controller. By the same operation as when there is no power supply to the microcomputer 400 is cut off.

In operation of the system by switching the local switch unit 700, when the local switch 700 which is grounded for the system power "ON" is "ON" in the standby state, it is "low". Low "level signals are applied to the buffer 320 and the microcomputer 400, respectively. When the "low" level signal is applied from the local switch 700, the buffer 320 outputs a "high" level signal to the integrating circuit 330 regardless of whether the infrared receiver 500 is received. The power is applied to the microcomputer 400 through the same process as when there is a signal received from the remote controller. The microcomputer 400 receives the output signal of the local switch unit 700 when the power is applied and outputs a high signal to the main power control unit 200 to turn on the system power.

Up to now, the operation has been described based on the standby state. When there is a signal from the remote controller and the output signal of the local switch unit 700 in the power-on state, the main power source from the microcomputer 400 is a power-off signal. The controller 200 outputs a low signal, and thus, the operation of the main power supply unit 600 is stopped and the auxiliary power supply unit 100 operates to switch to the standby mode.

As such, the present invention reduces the power consumption by cutting off the power applied to the microcomputer 400 in the standby state, thereby enabling the use of the transformer in the auxiliary power supply 100 configuration, thereby reducing the production cost and external influence. By this, the occurrence of defects in the auxiliary power supply unit 100 is reduced.

On the other hand, the present invention is not limited to the above embodiments and can be variously modified within the scope not departing from the technical gist of the present invention.

As described above, the power supply control apparatus of the system using the remote controller of the present invention has the effect of reducing the power consumption by cutting off the power applied to the microcomputer in the standby state by the microcomputer power supply control unit. As the power consumption is reduced in the state, it is possible to configure the auxiliary power supply using a transformer or the like, thereby reducing the cost and reducing the occurrence of defects caused by external influences.

Claims (3)

In the power supply control system of a system using a remote controller, Auxiliary power supply for supplying power to the configuration of the system required to receive the signal of the remote controller in the standby state; A main power supply unit for supplying power to the entire system in the power "ON" state; An infrared receiver for receiving an infrared signal transmitted from a remote controller; A local switch unit for operating a power "ON / OFF"; A microcomputer that controls overall operation of the system and is powered off in a standby state; A microcomputer power supply control unit controlling “ON / OFF” of power applied to the microcomputer from the main power supply unit and the auxiliary power supply unit according to whether the infrared receiver receives the switching unit and the local switch unit; And And a remote controller including a main power controller for controlling the main power unit under the control of the microcomputer. The microcomputer of claim 1, wherein the microcomputer power control unit cuts off the power applied to the microcomputer to reduce power consumption in a standby state, and applies power to the microcomputer only when a signal of a remote controller is received by the infrared receiver. A power supply control system for a system using a remote controller, characterized in that the control as possible. The method of claim 2, wherein the microcomputer power control unit A converting unit comprising a rectifying diode and a smoothing capacitor for rectifying and smoothing the power applied from the auxiliary power supply unit and the main power supply unit to a direct current form; A voltage drop resistance applied to the infrared receiver by dropping the voltage of the DC power converted by the converter; A buffer connected in parallel with the infrared receiver for the resistor and configured to receive and buffer a received signal from the infrared receiver and a switching signal of the local switch; An integrating circuit connected in parallel with the buffer for the resistor and for integrating a signal buffered in the buffer; A logic sum element connected in parallel with the integration circuit with respect to the resistor, for performing logical sum operation of the integration signal of the integration circuit and the output signal of the micom; A switching circuit unit for switching the output power of the conversion unit according to a logic operation result of the logic sum element; A constant voltage unit for applying the power transferred through the switching circuit unit to the operation power of the microcomputer; And And a diode for stopping the operation of the auxiliary power supply unit during the operation of the main power supply unit.