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:
Dec. 31, 1985
Filed:
Aug. 19, 1983
Krishna Rallapalli, San Jose, CA (US);
Shinkyo Kaku, Los Gatos, CA (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
A method and device for decoding two-dimensionally encoded digital facsimile signals. The method includes (a) accumulating the run lengths of color change picture elements in the reference line, (b) decoding a codeword to generate a displacement value, (c) combining the accumulated run length of a reference line color change picture element and a displacement value to obtain accumulated run lengths of coded line color change picture elements, and (d) determining the difference between accumulated run lengths of a coded line color change picture element. The difference is the decoded data. The device has a control logic, a reference line processor for generating the accumulated run lengths of color change picture elements in the reference line, a coded line processor for generating displacement values from the encoded codewords, and a combining part for combining the reference line accumulated run lengths and the displacement values to obtain the accumulated run lengths of color change picture elements in the coded line and for determining the differences between coded line accumulated run lengths, which are the decoded run lengths of the color units in the coded line.