Method for compressing mark symbol

Method for compressing mark symbol

  • CN 102,696,016 B
  • Filed: 12/20/2010
  • Issued: 12/12/2017
  • Est. Priority Date: 12/22/2009
  • Status: Active Grant
First Claim
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1. one kind is used for the method for compressing the identifier of the program code unit in portable data medium (2), described portableData medium is Java card, and this method includes following method steps:

  • - type is determined to the identifier in the portable data medium (2), wherein the identifier at least has first and secondType of identifier;

    - certain applications compression function in a manner of relying on type at least to the identifier and compressed identifier is obtained,The application is carried out in the portable data medium;

    - the compressed identifier is stored in the storage region (21) of the portable data medium, thus call instituteCompressed identifier is stated, to perform described program code unit,Wherein, the first compression function is applied to first type of identifier, to second type of identifier using the second pressureContracting function,The compression degree of first compression function is higher than second compression function,At least to the part application lossy compression method function of the identifier of first type of identifier, andTo the second type of identifier application Lossless Compression function.

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