KR940013062A - Method and apparatus for controlling in-phase modem with a built-in microcontroller - Google Patents

Abstract

The present invention relates to a remote information processing system including a coupler connected in parallel with a subscriber line and generating information generated from various indoor facilities, and a line multiple access device for multiplexing the subscriber line to scan the couplers. By communicating data through in-phase modem, it provides a way to communicate with or without subscriber line. To this end, the transmission process of each device modulates the transmission data output from the control unit, converts it into an analog signal, and then converts it into an in-phase inaudible signal and transmits it to the subscriber line. In the reception process of each device, when the in-phase signal is received from the subscriber line, it is converted into an analog signal having the original phase, and the analog signal is demodulated into digital data and applied to the controller.

Description

Method and apparatus for controlling in-phase modem with a built-in microcontroller

As this is a public information case, the full text was not included.

3 is a configuration diagram of a line multiple access device / coupler communication unit of the present invention;

4A is a flowchart in which the main control unit transmits data according to the present invention;

4B is a flowchart in which the main control unit receives data according to the present invention;

4C is an initialization flowchart of a modem controller according to the present invention;

4D is a flowchart of data transmission and reception of a modem control unit according to the present invention.

Claims (8)

A remote information processing system comprising a coupler connected in parallel with a subscriber line and generating information generated from various indoor facilities, and a multiple line connection device for scanning the couplers by multiplexing the subscriber line. And an in-phase coupling transformer for converting a transmission signal into an in-phase signal which is an inaudible signal and outputting it to the subscriber line, and converting the in-phase signal received on the subscriber line into a distal phase, and the in-phase coupling transformer. A modem control unit connected to the modem, and a modem controlling the demodulation signal transmitted and received by the in-phase coupling transformer and a main control unit, and controlling the modem to control transmission and reception of data on the subscriber line. Various alarms and security information can be communicated with or without it. Track multiple access devices and communication devices of the coupler, characterized in that the lock operation. 2. The apparatus of claim 1, further comprising: means for controlling the passage formation of a signal transmitted between the modem and the in-phase coupling transformer and switched by the modem controller to the in-phase coupling transformer, and connected between the modem and the in-phase coupling transformer. And a means for controlling passage formation of a signal received from the in-phase coupling transformer by being switched by the modem control unit. A communication method of a remote information processing system having a coupler connected in parallel with a subscriber line and generating information generated from various indoor facilities, and a line multiple access device for multiplexing the subscriber line to scan the couplers. The process includes reading data output from the main controller, converting the read data into an analog signal, and converting the analog signal into an in-phase inaudible signal and transmitting the same to the subscriber line. And a receiving step of converting the in-phase signal from the subscriber line into an analog signal having an original phase, demodulating the analog signal into digital data, and writing the digital data to the main controller. It consists of the process, and whether or not to use the subscriber line A communication method for a line multiple access device and a coupler, characterized in that it operates so as to transmit and receive data without a problem. 4. The method of claim 3, wherein the data is failure status and security information of an indoor facility. A communication method of a remote information processing system comprising a coupler connected in parallel with a subscriber line and generating information generated from various indoor facilities, and a line multiple access device for multiplexing the subscriber line to scan the couplers. A step of setting a mode at the same time, a step of transmitting a carrier signal in phase to the subscriber line in order to inform that there is a transmission mode temporary transmission data in the mode setting process, and a response signal of the same phase after transmitting the carrier signal to the subscriber line Modulates the data to be transmitted when the signal is detected from the subscriber line by modulating the data to be transmitted in the same phase and converts the original phase of the in-phase signal received from the subscriber line in the depth mode during the mode setting. The process of checking whether data has been received, and When detecting the reception of the data, the communication method of the line multiple access device and the coupler characterized in that the process of processing the analysis of the received data. The method of claim 5, further comprising: connecting a transmission path of data and blocking a reception path before transmitting the carrier signal in transmission mode. The communication method of a line connection device and a coupler according to claim 5 or 6, further comprising a step of connecting a reception path of data and blocking a transmission path before monitoring the reception of the reception mode temporary data. . 6. The method of claim 5, wherein the data is a failure state and security information of an indoor facility. ※ Note: The disclosure is based on the initial application.