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Serial conmunication method

A technology of serial communication and communication protocol, applied to electrical components, transmission systems, etc., can solve the problems of multi-transmission data lines, insufficient transmission speed, redundancy, etc., to ensure reliability and timeliness, improve data transmission rate, The effect of simplified implementation methods

Inactive Publication Date: 2005-01-05
HUAWEI TECH CO LTD
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  • Claims
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Problems solved by technology

However, the serial communication protocols as the above-mentioned standards are relatively complicated, especially the protocol standard and the synchronization processing of the receiver, etc., for the situation where the specific transmission information is relatively small, it is quite redundant, the transmission speed is not fast enough, and the bandwidth utilization rate is low. not tall
However, if the interface protocol is not defined and the receiver does not perform synchronous processing, the accuracy of information transmission cannot be guaranteed
If the parallel communication method is adopted, more transmission data lines are required, which greatly increases the complexity of the transmission system and increases the communication cost

Method used

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Embodiment Construction

[0023] like figure 2 As shown, the present invention only needs to connect two equipment entities through serial data lines. That is, the physical interfaces of each communication device are directly connected in series through data lines to establish a communication hardware transmission channel. The data line here is any communication line that can transmit serial level signals. It can be a line in an ordinary hard board circuit, or a signal line between two separate entities. The transmission distance depends on the specific circuit and signal line. It depends on the performance, which is the same as the performance of transmitting other level signals. Also connected with the physical interface of the present invention is a signal generating device and a counter. The serial signal generating device here can be a single-chip microcomputer or a programmable logic device (FPGA), etc., as long as the signal can be sent and analyzed. The data of the present invention is repre...

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Abstract

This invention discloses a serial communication method. A signal generation device and a counter are set on two serial connected communication devices. The method includes: taking signal clock frequency and amplified multiple as the communication protocol of said serial end devices, the sending end amplifies the being sent signals in terms of the multiple in the protocol and sends them via the serial data line. The receiving end picks up and stores the said amplified signals and gets the accurate signal of the sending end after analysis and the amplified signal is devided by the multiple to get the original signal.

Description

Technical field: [0001] The invention relates to a serial communication method. Background technique: [0002] In data communication and computer network systems, serial communication is often used to exchange data and information. In 1969, the American Electronics Industries Association (EIA) announced the electrical standard of RS-232C as a serial communication interface, which defines the interface for bit-serial transmission between data terminal equipment (DTE) and data communication equipment (DCE) Information, the electrical signal and mechanical requirements of the interface are reasonably arranged, and it has been widely used in the world. However, it uses a single-ended drive non-differential receiving circuit, so there are problems that the transmission distance is not too far (the maximum transmission distance is 15m) and the transmission rate is not too high (the maximum bit rate is 20Kb / s). Long-distance serial communication must use Modem, which increases th...

Claims

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Application Information

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IPC IPC(8): H04L29/06
Inventor 周恩松
Owner HUAWEI TECH CO LTD
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