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Method and system for improving real-time data communications

  • US 8,112,285 B2
  • Filed: 12/17/2009
  • Issued: 02/07/2012
  • Est. Priority Date: 06/25/2004
  • Status: Expired due to Fees
First Claim
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1. A system for adjusting a playback sampling rate for real-time data communications over a data packet network, comprising:

  • a data interface for receiving data packets from the data packet network;

    a buffer coupled to the data interface and configured to temporarily store the data packets;

    a digital to analog converter coupled to the buffer and configured to convert the data packets to an analog signal;

    a clocking mechanism coupled to the digital to analog converter and configured to provide the digital to analog converter with variable frequencies;

    a buffer monitor for monitoring activity of the buffer during the real-time data communications, wherein the buffer monitor is configured to adjust the playback sampling rate and to calculate average number of data packets stored in the buffer over a pre-determined period of time; and

    a timer for preventing the adjustment of the playback sampling rate by the buffer monitor until after expiration of the pre-determined period of time;

    wherein the playback sampling rate is adjusted by at least 8 Hz when the average number is deemed high or low, adjusted by at least 2 Hz if the average number is deemed lower than high, higher than low and outside a range deemed acceptable and held constant if the average number is in the range deemed acceptable.

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