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:
Oct. 27, 1998
Filed:
Jul. 24, 1995
Takao Takahashi, Tokyo, JP;
Naohisa Arai, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A minimum value detecting circuit detects a minimum value among digital R, G, B signals (three primary color signals) for each pixel (one sample) and the minimum value is supplied as a Wht signal (achromatic signal) to a quadruple-speed signal processing circuit. R', G', B' signals (corrected three primary color signals) are generated by subtracting the Wht signal from the R, G, B signals, respectively, and are supplied to the quadruple-speed signal processing circuit. The quadruple-speed signal processing circuit time-division-multiplexes the corrected three primary color signals and the Wht signal to generate a quadruple speed signal. By rendering .pi. cells ON (rotation by 0.degree.) or OFF (rotation by 90.degree.) based upon the time-division-multiplexed signal, a color picture using four time-compressed fields per ordinary field is obtained.