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Baud rate adaptive method for UART, device and UART

A baud rate, adaptive technology, applied in digital transmission systems, electrical components, error prevention and other directions, can solve problems such as inability to receive data accurately, baud rate changes, etc.

Inactive Publication Date: 2014-03-26
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows an AC/DC converter (Universal Access Digital Converter) called Baudrate Self Adjustment (BSA), used on both USB ports and LAN cables, to adjust its output voltage based upon factors like distance between devices connected over these interfaces. By monitoring the starting time when sending data packets, B SA automatically learns how long it takes them up before they are being transmitted properly. These improvements make communication more reliable even if there's any interference caused during wireless signals traveling across different types of networks.

Problems solved by technology

This patented technology solves this issue where an incorrect received signal occurs due to variations between different rates caused by factors like temperature fluctuations during operation.

Method used

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  • Baud rate adaptive method for UART, device and UART
  • Baud rate adaptive method for UART, device and UART
  • Baud rate adaptive method for UART, device and UART

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Embodiment Construction

[0042] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0043] Such as image 3 Shown is the preferred embodiment of the baud rate adaptive method for the universal asynchronous transceiver transmitter proposed by the present invention, comprising the following steps:

[0044] Step S31: Measure the width of the start bit pulse of the received asynchronous serial port signal in units of preset clock cycles, and obtain the number of preset clock cycles included in the start bit pulse, wherein the preset clock cycle is the reciprocal of the preset clock frequency, the preset clock frequency is N times the least common multiple of all optional baud rates of the sender, and the N is a positive integer;

[0045] Step S32: div...

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Abstract

The invention discloses a baud rate adaptive method for a universal asynchronous receiver/transmitter (UART), a device and the UART. The method comprises a step of measuring the width of the initial bit pulse of a received asynchronous serial signal with a preset clock cycle as a unit and obtaining the number of preset clock cycles in the initial bit pulse, wherein the preset clock frequency is N times of the least common multiple of all optional baud rates of a sending party, and N is a positive integer; a step of dividing the preset clock frequency by the number to obtain the transmission baud rate of the received asynchronous serial signal, a step of taking the transmission baud rate as the baud rate of the received asynchronous serial signal to receive the asynchronous serial signal. According to method, the device and the UART, the width of the initial bit pulse is measured through the preset clock cycle, the duration of the initial bit pulse is obtained, thus the baud rate of the asynchronous serial signal sent by the sending party can be obtained, and the asynchronous serial signal can be correctly received through an asynchronous receiving and sending transmitter with the transmission baud rate.

Description

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Claims

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Application Information

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Owner STATE GRID CORP OF CHINA
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