KR900015015A - Remote power control circuit and method of terminal in POS system - Google Patents

Abstract

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Description

Remote power control circuit and method of terminal in POS system

Since this is an open matter, no full text was included.

1 is a configuration diagram of the force system,

2 is a configuration diagram of a remote power control circuit according to the present invention;

3 is an operating waveform diagram of FIG.

Claims (2)

A power supply control circuit of a terminal connected in-line in a force system, the power supply circuit comprising: a rectifying and switching unit generating first and second power when the power switch is "on" and generating only a second power when the power switch is off; And a regulator for rating the output of the switching unit to a predetermined power source, a power control unit for controlling the rectifying and switching unit and the regulator to generate a first power source even when the power source is switched off by a predetermined power supply control signal, and the second power source. An on-line controller, which is operated by the first terminal and generates a DMA request or release signal when data is input or terminated at another terminal, and is operated by the first power source to control the operation of the corresponding terminal and turn on the power when the DMA request or release signal is generated. Or a CPU generating an address for " off " and a decoding signal for remote power control by decoding the address of the CPU. A generated address decoder, a logic generator generating first and second logic signals for remote power supply control by an output of the address decoder, and a power-on " on " control signal by the DMA request signal or first logic signal. And a control signal generator for generating a power "off" signal based on the DMA release signal and the second tissue signal and outputting the signal to the power controller. The power supply unit generates the first and second power signals when the power switch is turned on and generates only the second power when the power switch is turned off, and generates a first power even when the power switch is turned off by a predetermined power control signal. An in-line controller for controlling the flow of data in-line, and controlled by the first power source to control the operation of a corresponding terminal, and simultaneously controlling first and second logic signals according to an in-line communication state. A power supply control method of a terminal in a power-off state in a POS system having a control unit generating and a control signal generation unit generating the power control signal by the outputs of the control unit and the in-line control unit, wherein the data is input whenever the data is input from the outside. Generating a DMA request signal from the in-line controller; Generating a first power source by applying to a raw part, and controlling the controller to process data generated by an in-line controller by the first power source, and at the same time, a first power source irrespective of the change state of the DMA request signal Generating a first logic signal for power "on" to generate a power supply; and generating a power "on" control signal from a control signal generator by the first logic signal and applying it to the power supply to maintain a first power generation; And generating, by the controller, a second logic signal by recognizing this when the in-line communication is completed, and generating a power "off" control signal by the state of the second logic signal and the in-line controller. Remote power control method of the terminal in the POS system, characterized in that the process consisting of the step of the first power generation by applying a. ※ Note: The disclosure is based on the initial application.