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:
May. 29, 1990
Filed:
May. 02, 1986
Peter B Rysavy, Seattle, WA (US);
Maurice J Fuller, Seattle, WA (US);
John Fluke Mfg. Co., Inc., Everett, WA (US);
Abstract
Apparatus for aligning a raster scanned display uses a microprocessor to control timing for horizontal and vertical synchronizing signals. An additional delay device may be provided to improve alignment resolution. When the aligning apparatus is used with a touch panel, an alignment screen is displayed, including aligning touchkeys. By depressing the touch panel at the displayed touchkeys, a user provides image position information to the microprocessor. The microprocessor corrects image alignment to the touch panel by varying timing interval counts stored in registers of a video controller for front and back porch intervals of horizontal and vertical signals. Where resolution is to be improved, delay parameter settings are provided to the additional delay device. Alternatively, the counts in the registers may be fixed and alignment may be controlled completely by the delay.