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Data communication device

  • US 20020031099A1
  • Filed: 08/09/2001
  • Published: 03/14/2002
  • Est. Priority Date: 08/04/1999
  • Status: Active Grant
First Claim
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1. An interface for transferring data from a real-time data transfer system to a signal processing unit comprising:

  • a circular buffer having an input configured to receive data samples from the real-time data transfer system and to periodically send data samples received from the real-time data transfer system to the signal processing unit when the signal processing unit accepts a transfer, wherein the data is stored and transferred according to a first-in, first-out operational protocol; and

    a first counter circuit communicating with the signal processing unit and the data transfer system and configured to increment for each data sample sent to the circular buffer from the data transfer system and decrement for each data sample sent to the signal processing unit from the circular buffer, where the counter circuit is configured to count beyond the physical range of the buffer to account for data samples transferred through the circular buffer.

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