A bus bridge for program-controlled instrument communication using usbhost interface

A bus bridge and interface technology, applied in the field of test and measurement, to achieve the effect of simple structure, reduced design cost and low cost

Active Publication Date: 2019-09-24
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 3. To read device data through BulkIn transmission, the USB host must first send a USBTMC Prepare to Return Data command through BulkOut transmission before proceeding;
[0008] With the development of electronic technology, more and more instruments use computers as the control core, which poses new problems for USB applications in the field of test and measurement: when realizing the communication between the control host and the instrument, both the control host and the instrument only provide USB Host interface, the two cannot directly use the USB Host interface to communicate with each other

Method used

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  • A bus bridge for program-controlled instrument communication using usbhost interface
  • A bus bridge for program-controlled instrument communication using usbhost interface
  • A bus bridge for program-controlled instrument communication using usbhost interface

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Embodiment Construction

[0032] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention. It should be noted that in the following description, when detailed descriptions of known functions and designs may dilute the main content of the present invention, these descriptions will be omitted here.

[0033] figure 1 It is a structure diagram of a bus bridge using a USB Host interface to realize communication of a program-controlled instrument in the present invention.

[0034] In this example, if figure 1 As shown, the present invention utilizes a USB Host interface to realize a bus bridge for program-controlled instrument communication, comprising: a USB bus bridge connecting a control host and an instrument host through a USB Host interface;

[0035] From the perspective of the control host, both the USB bus bridge and the instrument host belong to the category of U...

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Abstract

The invention discloses a bus bridge for realizing program-controlled instrument communication by using a USB Host interface, which is formed by "back-to-back" connection between a master USB chip and a slave USB chip, wherein the master USB chip supports the USBTMC protocol, so that it can be identified as a USBTMC device, Therefore, the mutual communication between the control host and the instrument host is realized, and has the characteristics of low cost, simple structure, stable and fast transmission speed, and the like.

Description

technical field [0001] The invention belongs to the technical field of test and measurement, and more specifically relates to a bus bridge for realizing program-controlled instrument communication by using a USB Host interface. Background technique [0002] USB has the advantages of convenient use, support for hot plugging, and fast transmission speed, and has been recognized by test and measurement instrument suppliers and users. The USB Alliance has formulated USBTMC protocol standards to promote the development of USB in the field of test and measurement. Compared with the general USB protocol, the USBTMC protocol has made the following new specifications: [0003] 1. In terms of supported transmission methods, control transmission and bulk transmission are required, interrupt transmission is optional, and synchronous transmission is not specified; [0004] 2. Define the format of the header (Header), which stipulates that the data transmitted by Bulk must start with a s...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G06F13/42
Inventor肖寅东叶建伟刘科王厚军田书林郭广坤黄建国
OwnerUNIV OF ELECTRONICS SCI & TECH OF CHINA