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:
Mar. 22, 1994
Filed:
Jan. 25, 1993
Kazuya Masuda, Nara, JP;
Kouji Yamaji, Yamato-Koriyama, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An image signal processing apparatus is provided with an image signal generation device for sequentially generating image signals representing light and shade of an original image per every picture element. The image signal processing apparatus is also provided with an extreme portion detection device for comparing the generated image signal of an observation picture element and each of the generated image signals of a plurality of peripheral picture elements which are positioned in the vicinity of the observation picture element, and judging whether the compared observation picture element is an extreme portion or not. The image signal processing apparatus is further provided with a correction device for correcting a level of the image signal of the observation picture element, which is judged to be the extreme portion by the extreme portion detection device, by use of a calculation predetermined with respect to the level of the image signal.