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. 18, 1994
Filed:
Mar. 30, 1992
Koichi Nakamura, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A video camera equipped with an image sensor for producing an analog video signal, an A-D converter for converting the analog video signal to a digital video signal in a manner that any component thereof above a predetermined luminance level is clipped, and a flare correcting circuit for removing any flare component superposed on the digital video signal. The flare correcting circuit comprises an average luminance level detector for detecting the average luminance level during a time period of several fields of the digital video signal; a clip period detector for detecting the time period, during which the analog signal is clipped, when the analog video signal is converted to the digital video signal by the A-D converter; a flare correction signal generator for producing a flare correction signal in accordance with the output signal of the average luminance level detector and the output signal of the clip period detector; and a subtracter for subtracting the flare correction signal from the digital video signal.