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Autobaud rate detection and adjustment

  • US 6,198,785 B1
  • Filed: 09/29/1997
  • Issued: 03/06/2001
  • Est. Priority Date: 09/29/1997
  • Status: Expired due to Term
First Claim
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1. A data communication device for automatically detecting and adjusting to an incoming baudrate from a data terminal, said device comprising:

  • a baudrate generator for controlling a rate at which data is transferred to and from the device;

    a controller, said controller setting said baudrate generator at a highest available baudrate;

    said controller suspending said baudrate generator upon detection of a start bit received at said highest available baudrate;

    said controller polling for a duration of said start bit at a polling interval based on a controller generated time reference, said controller generated time reference being an execution time of a set of selected background processing instructions;

    said controller thereby determining a width of said start bit to determine an actual rate of said incoming baudrate; and

    said controller setting said baudrate generator to said actual baudrate and restarting said baudrate generator to receive a remaining data at said actual baudrate.

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