Encoder buffer having an effective size which varies automatically with the channel bit-rate

  • US 5,566,208 A
  • Filed: 03/17/1994
  • Issued: 10/15/1996
  • Est. Priority Date: 03/17/1994
  • Status: Expired due to Term
First Claim
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1. Apparatus for transmitting an input signal to a destination, comprising:

  • an encoder for converting said input signal into successive coded digital signals at a variable encoding rate;

    an encoder buffer having a variable effective size for receiving and temporarily storing said successive coded digital signals, said encoder buffer having a fullness value used by said encoder in determining a value for said variable encoding rate of said encoder, said fullness value of said encoder buffer being determined in reference to said variable effective size of said encoder buffer;

    a communication system for receiving said successive coded digital signals from said encoder buffer at a variable bit-rate R and for delivering said successive coded digital signals to a destination; and

    a decoder at said destination for receiving said successive coded digital signals from said communication system and converting said successive coded digital signals into an output signal corresponding to said input signal and having a fixed delay Δ

    T relative to said input signal;

    said encoder buffer having an effective size that increases with R.

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