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:
Feb. 12, 2013
Filed:
Apr. 01, 2008
Yoshiaki Nishide, Osaka, JP;
Yoshiaki Nishide, Osaka, JP;
Sony Corporation, Tokyo, JP;
Abstract
A signal processing method is provided. The method includes: generating an output signal containing a high-precision component at a level not determined by quantization of an input digital signal by subjecting each of pixels constituting the input digital signal to a predetermined filter operation such that a set of predetermined number of pixels including a target pixel and surrounding pixels thereof is obtained, the operation is carried out on the surrounding pixels when a variation from the target pixel is within a predetermined threshold range, and the operation is carried out on the target pixel when a variation from the target pixel is out of the predetermined threshold range; separating the high precision component from the signal output from the edge-preserving smoothing filter; and adding the high precision component separated from the high-precision component separating part to the input digital signal.