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:
Dec. 17, 2002
Filed:
Aug. 02, 2001
Makoto Kumano, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
There is disclosed a vertical deflection circuit for use in a display device employing a CRT. The vertical deflection circuit has a DSP (digital signal processor) for producing a digital current signal during each main period. This digital current signal shows plural current values which increases in first equal increments from a different value during each main period. The digital current value is converted into an analog current signal by a D/A converter and then averaged by a low-pass filter. A vertical deflection current is produced based on the averaged analog current signal. Because plural different current values are averaged, the average value varies linearly. Accordingly, the vertical deflection current varies linearly with each main period.