KR200187756Y1 - Data communication system utilizing multichannel frequency loop - Google Patents

Abstract

The present invention is a system for constructing a bidirectional data communication network between a host computer and a subscriber station using a wired / wireless communication network. A plurality of uplink frequencies and downlink frequencies are used to configure an uplink frequency loop and a downlink frequency loop, and a plurality of frequencies are previously assigned to the host computer. It provides multi-channel loop type variable frequency communication system that maintains up and down communication network by detecting memory when communication failure occurs and automatically changing to frequency without noise or signal intrusion on loop.

Description

Frequency variable data communication system of multi-channel loop method {Data Communication System Utilizing Multichannel Frequency Loop}

The present invention is a multi-channel loop system in which a plurality of uplink frequencies and downlink frequencies are configured in a system configuring a bidirectional data communication network between a host computer and a subscriber station, and the communication network is maintained at an uplink and downlink frequency at all times under the control of the host computer. Provides a frequency variable communication system.

In the conventional wired / wireless communication system, the communication system between the host computer and each subscriber station is composed of a transmission and reception device with one fixed uplink frequency and one fixed downlink frequency, so that signal ingress or noise is generated at a fixed frequency. There was a problem that suddenly lost data communication.

Due to the above problems, when the Internet is connected to the PC through the cable TV network, the data communication network is frequently interrupted due to signal intrusion or noise, causing consumer dissatisfaction. There was a problem that the cost of the modem is too high.

In particular, the data communication network is frequently disconnected due to various noises and signal intrusion phenomena flowing into the line in configuring the data communication network with power lines, and thus there is a problem in commercially connecting the Internet or implementing additional communication business.

In order to solve the above problems, the present invention consists of a plurality of uplink data frequencies and downlink data frequencies in data communication to form a downlink data frequency loop and a downlink frequency loop, and input a frequency to be used in advance to a host computer and a terminal in a communication network. When noise or signal intrusion is detected, it provides the system technology to maintain a clean communication network by moving to the up and down data frequency without communication obstacles by the immediate control of the host computer.

1 is a system block diagram of the present invention

2 is a block diagram of a transmission and reception system of the present invention

<Description of the code | symbol about the principal part of drawing>

10: main computer

11: data signal receiving means

12: data signal transmission device means

13: PLL for receiving frequency conversion

14: PLL for transmission frequency conversion

15: noise detection means

16: memory means

F1, F2, FN: Frequency to use

20-1, 20-N: means for transmitting data signal

21-1, 21-N: data signal receiver means

22-1, 22-N: PLL for Transmit Frequency Conversion

23-1, 23-N: PLL for reception frequency conversion

24-1, 24-N: Central Processing Unit

25-1, 25-N: memory means

26-1, 26-N: terminal means

Hereinafter, with reference to the accompanying drawings will be described the system configuration of the present invention and its effects and effects to achieve the above object.

1 is a system block diagram of the present invention, Figure 2 is a block diagram for the transmission and reception system. As shown in Figs. 1 and 2, the present invention provides a method for varying the reception frequency of the host computer 10, the receiving device means 11 built in the host computer, the transmitting device means 12, and the receiving device means. A PLL means 13, a PLL means 14 for varying the transmission frequency of the transmission device means, and a sensing means 15 for detecting when a signal intrusion or noise occurs in the communication network and corresponding to the host computer, Memory means 16 for storing a plurality of transmission / reception data frequencies to be varied.

In addition, the N terminals communicating with the host computer have N transmitter means 20-1, 20-N, N receiver means 21-1, 21-N, and the frequencies of the N transmitter means. Memory means 25-1, 25-N for storing the memory; N PLL means 23-1, 23-N for varying the frequencies of the above N receiving means; and frequencies F1, F2, N PLL means 22-1, 22-N varying FN), N central processing units 24-1, 24-N controlling the above N transmit / receive means, and perform terminal-specific functions N terminal means 26-1, 26-N.

Referring to the operation and effects of the present invention configured as described above are as follows.

First, the receiving device means 11 of the host computer 10, the transmitting device means 12, the transmitting device means 20-1, 20-N in the N subscriber stations, and the receiving device means 21-1, 21. N memory units 25-1 and 25-N are set in advance and stored in memory.

At this time, the upstream frequency and the downlink frequency of the memory make the available frequencies allocated to the region to the maximum, and the actual frequencies to be used are selected in 3-5 units by the host computer to form a loop. When signal intrusion or noise occurs in the downlink and uplink frequencies of the communication network, the detection means 15 detects the signal and transmits the signal to the host computer, and the host computer 10 immediately transmits and receives the frequency at the second programmed frequency. The control data is transmitted to the N central processing units 26-1 and 26-N embedded in the N terminals so that the N central processing units change the transmission / reception frequency to the second set frequency by the PLL means. .

Since the host computer transmits the frequency change control data to the N terminals, there is little possibility of noise occurring in the existing downlink frequency. Control data can be inserted into and transmitted.

If a signal intrusion or noise occurs after the data communication frequency between the host computer and the N terminals of the above method is changed to the second set frequency, the host computer changes the transmit / receive frequency to the third set frequency, and the third set frequency. If signal intrusion or noise occurs in the system, the frequency is changed to the N-th set frequency, and the transmit / receive frequency is changed in a loop while changing from the N-th set frequency to the first set frequency so that the up-down data frequency between the host computer and the N terminals is You will always have a clean network free of signal intrusion or noise.

As described above, the present invention comprises a plurality of uplink and downlink frequencies for performing data communication in both directions between the host computer and the N terminals, means for detecting a communication failure, and means for circulating and varying the frequency in a loop. It is to provide a system for constructing a clean data communication network without any communication obstacles by constructing, and to provide a useful system for operating a PC or performing additional communication business by accessing the Internet through a cable TV network or a power line network.

Claims (3)

A system for implementing bidirectional data communication between a host computer and a plurality of subscriber stations, (1) data transmission device means for transmitting and receiving data to the terminal, data receiving device means, memory means for storing and storing N frequencies to be transmitted and received, PLL means for changing transmission and reception frequencies, signal intrusion or Transmitting and receiving device means of a host computer configured with noise detecting means for identifying noise; (2) N terminals communicating with the host computer; (3) N data communication transmission / reception apparatus means built in the above N terminals, N memory means for storing and storing the frequency to be transmitted and received, N PLL means for changing the transmission / reception frequency, and controlling the above means. N central processing means; (4) N number of up and down transmission and reception frequencies are set in advance, and when the above automatic detection means detects noise or signal intrusion on the line, it recognizes this and changes the up and down frequencies to the second set frequency inputted above. When signal intrusion or noise is detected, it is changed to N-th set frequency, and it is changed from N-th to 1st set frequency, and it is composed of the control means of the host computer that maintains the communication network without any communication disturbance while changing the up-down frequency in loop type. Multi-channel loop frequency variable data communication system. The method according to claim 1, A multi-channel loop type frequency variable data communication system characterized by adding a PLL means to a transmitting device means and a receiving device means of a host computer and N terminals, respectively, to separate and vary a transmitting frequency and a receiving frequency. The method according to claim 1, Only one common PLL for converting transmission / reception frequencies at the same time to the host computer and the N terminal transmitting means and the receiving means is provided so as to simultaneously convert the frequencies of the transmitting means and the receiving means of the host computer and the N terminals. Multi-channel loop type variable frequency data communication system.