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:
May. 20, 2008
Filed:
Sep. 18, 2002
Yukio Chiba, Kanagawa, JP;
Katsumi Otsuka, Kanagawa, JP;
Yukio Chiba, Kanagawa, JP;
Katsumi Otsuka, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A variable-length coding apparatus having a smaller circuit scale, which flexibly handles identifier insertion processing in correspondence with various coding schemes, and which performs fine code amount control and adaptive erroneous operation control, and an image coding apparatus having the variable-length coding apparatus. The variable-length coding apparatus converts quantized data obtained by quantizing image data into variable-length code data, generates a code data string having a predetermined data structure, and inserts padding bits and identifier into the variable-length code data based on an externally-input instruction. Further, the image coding apparatus having the variable-length coding apparatus changes quantization values based on the total code amount of code data string generated by the variable-length coding apparatus.