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High-speed digital video serial link

  • US 6,084,631 A
  • Filed: 04/02/1997
  • Issued: 07/04/2000
  • Est. Priority Date: 03/24/1995
  • Status: Expired due to Fees
First Claim
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1. A machine vision control system for use in a manufacturing environment using two-directional high speed serial digital transmissions comprising:

  • a main processor that receives packaged digital data and control signals and that transmits packaged digital data and control signals, the main processor including an analyzer circuit that analyzes received video image data and that generates and transmits a packaged digital first control signal that includes a content-analysis response based upon content of the video image data;

    a primary communication hub having a first interface and a plurality of second interfaces, the first interface connected to the main processor through a serial communication bus that transmits and receives the packaged digital data and control signals;

    a plurality of remote video cameras each having a third interface that is connected to one of the plurality of second interfaces for two-directional communication with the primary communication hub; and

    a first trigger source responsive to a manufacturing process or assembly step, that provides a signal commanding that one of the plurality of remote video cameras acquire an image;

    whereinthe primary communication hub is adapted to generate a priority response to a high priority request signal,the priority response being inserted between the beginning and end of transmission of a digital data packet carrying video information from one of the remote video cameras to the main processor, and wherein real-time manufacturing operations are performed using the first control signal.

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