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:
Jun. 04, 1991
Filed:
Mar. 15, 1990
Kenji Shibayama, Tokyo, JP;
Victor Company of Japan, Limited, Yokohama, JP;
Abstract
A video signal processor for processing a composite video signal to be fed to color liquid crystal (LC) panels of a color liquid crystal display which are each assigned to a different color. The pedestal level of each color signal included in the video signal and to be fed to particular one of the LC panels is caused into coincidence with the level of an input signal which reduces the transmittance of the LC panel to the lowest transmittance. The pedestal level is caused to agree with the clipping level of either one of a dark and a white clipping circuit, whereby signal components lower than the pedestal level are removed. The processor insures the maximum contrast available with LC panels and eliminates light-and-dark inversion, thereby enhancing the reproduction of high quality pictures.