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Data compression apparatus and method for data recorder

  • US 4,906,995 A
  • Filed: 12/12/1986
  • Issued: 03/06/1990
  • Est. Priority Date: 12/12/1986
  • Status: Expired due to Fees
First Claim
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1. Apparatus for compression of a digital input information signal, comprising:

  • input means for receiving a predetermined number n of input data samples representing said input information signal during a sampling period;

    signal processing means responsive to said predetermined number n of input data samples for determining a compression parameter corresponding to the magnitude of an information parameter of said input information signal;

    compression means responsive to said compression parameter for selecting a predetermined portion of said n input samples to provide a second predetermined number r of compressed data samples, where r is less than n;

    output means for providing a compressed data string comprising said compression parameter and said predetermined number r compressed data samples;

    means responsive to said r compressed data samples for obtaining a reconstructed input signal;

    means for comparing said reconstructed input signal to said input information signal; and

    means responsive to said comparing means for adjusting the number r so that said reconstructed input signal matches said input information signal within a predetermined error.

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