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, 1989
Filed:
Apr. 08, 1988
Armand Belmares-Sarabia, Catskill, NY (US);
Stanley J Chayka, Parsippany, NJ (US);
Corporate Communications Consultants, Inc., Fairfield, NJ (US);
Abstract
Improved color correction apparatus, systems, and methods are disclosed. Such an apparatus may include a control signal circuit and a color level correction circuit. The control signal circuit is responsive to luminance signals. Additionally, the control signal circuit establishes a plurality of luminance ranges, which overlap one another, and produces a plurality of control signals. The different control signals are associated with the different luminance ranges. Each of the control signals is a different function of the luminance signal. The color level correction circuit is responsive to the control signals produced by the control signal circuit. The color level correction circuit is preferably responsive to color difference signals, too. The color level correction circuit selectively develops color level correction signals based upon the control signals provided by the control signal circuit. The apparatus further includes a circuit for applying the color level correction signal to the color signals. Each of the control signals produced by the control signal circuit is advantageously a different smoothly varying function of the luminance signal and is nonzero over a substantially full spectrum of luminance levels. A system may be provided with equipment for controlling a video signal source, such as a telecine, based upon a plurality of simultaneously displayed video pictures. The simultaneously displayed video pictures may be used to position the image recording medium in the video signal source so that a particular image, which corresponds to a selected one of the simultaneously displayed video pictures, is properly aligned in the video signal source to produce the instantaneous video picture.