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:
Nov. 06, 2007
Filed:
Jan. 22, 2004
Takayuki Nishimura, Tottori, JP;
Yasuyuki Nomizu, Kanagawa, JP;
Hiroyuki Sakuyama, Tokyo, JP;
Junichi Hara, Kanagawa, JP;
Nekka Matsuura, Kanagawa, JP;
Takanori Yano, Kanagawa, JP;
Taku Kodama, Kanagawa, JP;
Toshio Miyazawa, Kanagawa, JP;
Yasuyuki Shinkai, Kanagawa, JP;
Takayuki Nishimura, Tottori, JP;
Yasuyuki Nomizu, Kanagawa, JP;
Hiroyuki Sakuyama, Tokyo, JP;
Junichi Hara, Kanagawa, JP;
Nekka Matsuura, Kanagawa, JP;
Takanori Yano, Kanagawa, JP;
Taku Kodama, Kanagawa, JP;
Toshio Miyazawa, Kanagawa, JP;
Yasuyuki Shinkai, Kanagawa, JP;
Ricoh Copmany, Ltd., Tokyo, JP;
Abstract
An apparatus for coding an image while scrambling the image by randomizing pixel values includes a scrambling unit which scrambles an image by utilizing an encryption function to compute a displacement of a pixel value to be randomized in response to a displacement of a previously randomized pixel value.