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:
Oct. 06, 2009
Filed:
Mar. 12, 2004
Shigeo Ando, Tokyo, JP;
Yasuo Maeda, Tokyo, JP;
Mitsunobu Yoshinaga, Tokyo, JP;
Kanae Ikeda, Tokyo, JP;
Satoshi Minami, Tokyo, JP;
Kyosuke Yoshimoto, Tokyo, JP;
Aki Kimura, Tokyo, JP;
Shigeo Ando, Tokyo, JP;
Yasuo Maeda, Tokyo, JP;
Mitsunobu Yoshinaga, Tokyo, JP;
Kanae Ikeda, Tokyo, JP;
Satoshi Minami, Tokyo, JP;
Kyosuke Yoshimoto, Tokyo, JP;
Aki Kimura, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
Image feature values Va and Vb are derived from image data, coefficients C and D are determined based on the image feature values Va and Vb, and an approximate expression expressed with the file size Sfj of the JPEG compression file and the quantization data coefficient value Aqt is derived. Next, by designating the file size of a desired predetermined JPEG compression file based on the approximate expression, the quantization data coefficient value Aqt is derived, and a first quantization table as a reference is multiplied by the quantization data coefficient value Aqt, whereby a second quantization table is obtained. Then, using the second quantization table, the image data is actually JPEG-compressed.