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:
Aug. 21, 2007
Filed:
May. 22, 2003
Mitsuyasu Asano, Tokyo, JP;
Kazuhiko Ueda, Kanagawa, JP;
Takeshi Kubozono, Kanagawa, JP;
Kazuki Yokoyama, Kanagawa, JP;
Mitsuyasu Asano, Tokyo, JP;
Kazuhiko Ueda, Kanagawa, JP;
Takeshi Kubozono, Kanagawa, JP;
Kazuki Yokoyama, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
An input signal is accurately separated into a component in which a change in signal level is sharp and having a large edge, and the other components. A narrow band non-linear filter extracts an edge component in a relatively narrow frequency band from an input signal and outputs the signal. A wide band non-linear filter extracts an edge component in a relatively wide frequency band from the input signal and outputs the signal. A selector outputs a signal composed of the signal where an edge portion is replaced, based on a differentiated value of the signal sent by a differentiator, as the edge component of the input signal. An adder subtracts an output signal from the input signal and outputs the calculated output signal as the edge component of the input signal. This process, may be applied to an image processor.