The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 22, 2005
Filed:
Apr. 26, 2001
Dake He, Chengdu, CN;
Wei He, Chengdu, CN;
Southwest Jiaotong University, Chengdu, CN;
Abstract
A coding transformation method includes the steps of dividing an input data into blocks with the length of 13 bits, where the original data set X includes all 8192 13-bit symbols and 12 filling-bit symbols, and uses 91 printable characters in the output representation of the input data. The output set Y is a sub-set of the direct product R91×R91, with R91 being a set of 91 printable ASCII characters. The reversible coding mapping relationship isBase]=()=(%)where xεX, ch1, chR91. For an input data block less than 13-bits long, n bits are added to the specified side to make it become a complete block with the image of the block of data in the direct product R91×R91.