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Adaptive display refresh and data compression in a radio frequency environment

  • US 5,592,512 A
  • Filed: 07/01/1994
  • Issued: 01/07/1997
  • Est. Priority Date: 06/24/1994
  • Status: Expired due to Fees
First Claim
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1. A method of compressing data comprising:

  • (a) first implementing a run length compression scheme to output repeated characters in a stream of input data as flags followed by a count of the number of repetitions;

    (b) second implementing a sliding dictionary scheme to output a character itself if it is occurring for the first time in the stream of input data, and to output a pointer to a previously compressed character if the character has already occurred in the stream of input data;

    (c) formatting the output of step (b) by adding an additional bit to each character or pointer to indicate whether it represents a character or a pointer; and

    (d) accumulating the additional bits into a first byte of a set of data bytes to indicate whether each byte in the set is a character or a pointer,such that data communication speed is improved without an increase in memory storage used.

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