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:
Sep. 12, 1995
Filed:
Apr. 09, 1993
Steven Brett, Kent, GB;
Pandora International Ltd., , GB;
Abstract
A digital video processor which is usable as a secondary digital color processor (DCP) with standard-definition digital telecines and is also compatible with high-definition television systems, for correcting video color and other attributes such as pixel location and sharpness. The disclosed video processor has an architecture in which only the pixels and/or regions of a video picture to be modified have any processing applied to them, so that most pixels, which are unmodified, remain free from any potential corruption. It identifies pixels to be modified by means of lookup tables which can be loaded for each frame with data indicating attributes such as hue, saturation, and luminance values or ranges which are to be present in a pixel if that pixel is to be selected for modification, the pixel's attributes being applied to each lookup table as an address. The DCP has multiple channels, with precedence logic to control the priority order of the channels, in order to apply only one particular set of modification increments associated with only one channel, in the event that more than one set of selection attributes are applicable to a given pixel. The system is capable of standard- or reduced-definition modification of portions within a high-definition picture.