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:
Jan. 30, 1996
Filed:
Oct. 06, 1994
Tomoko Akashi, Moriguchi, JP;
Norio Suzuki, Neyagawa, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In apparatus for generating a video special effect of making an image to see as if it were illuminated with light and changing the qualitative appearance of the image, an input video signal is stored in a video memory and read out by a reading address generated by a reading address generator. A video signal differentiating circuit differentiates the video signal read out from the video memory to obtain a dislocation quantity. An address dislocating circuits dislocates the reading address by using the dislocation quantity to produce a dislocation address. A region extracting circuit generates a region signal showing a positional relation of a pixel specified by the dislocation address and a predetermined specific region on the basis of the dislocation address. A luminance calculating circuit calculates a luminance correction value on the basis of the region signal. A video synthesizing circuit synthesizes the luminance correction value and the video signal read out from the video memory to obtain an output video signal.