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. 27, 1998
Filed:
Feb. 03, 1995
Toshiya Adachi, Nagaokakyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
The video signal data of one of the three primary color signals having the maximum level is adjusted with regard to the amplitude level and the DC level thereof in accordance with a predetermined control data. A difference between the adjusted video signal data and a predetermined threshold level is calculated, and the control data is corrected by ones complement of the differential data. The video signal data of the three primary color signals are adjusted respectively, with regard to the amplitude level and DC level thereof in accordance with the corrected control data. In other words, merely with respect to the digital video signal data with the maximum level, the control and brightness controls are conducted. Then, a difference between the resultant video signal data and a predetermined threshold level is obtained for adjusting the respective contrast levels of the three primary color signals by using ones complement of the obtained differential data.