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. 07, 2008
Filed:
Dec. 10, 2002
Isao Kawanishi, Kanagawa, JP;
Tomohiko Naruse, Gifu, JP;
Ken Nakajima, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
The present invention relates to an image capturing apparatus and method in which the image recording time is reduced and the memory capacity required for compression is also reduced. A number-of-bytes calculation unitdetermines the number of bytes after compression based on an integrated value of high-frequency integrated data supplied from a high-frequency integration processor. Based on the determined number of bytes, a Q-scale calculation unitdetermines a Q-scale based on which the image data can be compressed one time to a predetermined data size. A Q-table generation unitgenerates a Q-table based on the Q-scale. A DCT unitperforms a discrete cosine transform on the input image data. A quantization processoradjusts the compression ratio of the image data based on the up-to-date Q-table supplied from the Q-table generation unit. A variable-length coding processorencodes the image data with variable length coding such as Huffman coding, and outputs the resulting compressed image data. The present invention is applicable to digital cameras.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile