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A communication sending and receiving method for identifying data by width

A technology for data identification, communication sending and receiving, applied in digital transmission systems, error prevention, electrical components, etc., can solve the problems of difficult laser communication, difficult to obtain the second channel transmission synchronization clock, etc., to achieve high anti-interference ability, high bandwidth, The effect of good confidentiality

Active Publication Date: 2021-05-28
BEIJING AN GUANG INFO TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Laser communication has great difficulties due to its inherent single channel, and it is difficult to obtain a second channel to transmit a synchronous clock

Method used

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  • A communication sending and receiving method for identifying data by width
  • A communication sending and receiving method for identifying data by width
  • A communication sending and receiving method for identifying data by width

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Experimental program
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Embodiment Construction

[0015] Laser communication is characterized by a one-to-one mode without pre-negotiated short messages, and there is a set of coding schemes applicable to laser lines, which realizes highly reliable laser communication. The key points of the scheme are (a) set it as an 8-bit code line, (b) use 0X7E [0111 1110] as the padding code, (c) use command words, such as 0XFE, to manage the channel and coordinate the rate, (d) use 5 Insert retrofit. The high reliability of laser communication means that the bit error rate is better than 10 -13 , and redundant code checking can be used in communication.

[0016] Messages should be transmitted continuously during transmission until the end of a message. There must be padding codes between different packets.

[0017] Example of signal width measurement and recording: such as figure 2 . The 16-bit word length, the width of the "0" signal, the width of the "1" signal, ... are arranged in this order. They are 0X040B, 0X0C41, 0X040B, .....

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Abstract

The invention of a communication sending and receiving method for identifying data by width changes the existing synchronous principle of data communication of one data line and one clock line, and realizes highly reliable data communication without a clock line. It effectively solves the difficulty that laser communication cannot provide clock lines now. The synchronous clock-free communication method of the width method helps the existing network technology to solve the difficulty of direct connection of remote lines to the home, realizes the integration of the four networks of telephone, TV, data, and IoT, and also eliminates a large number of long-standing disadvantages of the existing Internet technology . Laser communication using the width method provides an effective way to solve the most critical underwater communication hot-swapping problem in ocean development.

Description

Technical field: [0001] The present invention relates to the most basic communication receiving method, referred to as "width method" for short, which stands for "communication sending and receiving method for identifying data by width". Width refers to the duration width of a continuous signal. From the moment when the signal on the data line is received from low to high to "1", or from high to low to "0", until the next transition, as the width of the continuous signal, it is judged that the width is continuous After the signal is several "1" or several "0", the content of the sender's data is known. The traditional method relies on clock positioning to read whether the value of the signal on the data line at the moment is "1" or "0" to receive data, which is called "reading value method" (also known as "height method"). The "Width Method" solves many difficult problems that the "Height Method" cannot solve, involving a wide range. For example, the difficulty of synchroni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L7/00H04B14/02H04L1/00
Inventor 江启航
Owner BEIJING AN GUANG INFO TECH
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