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:
Sep. 11, 1990
Filed:
Mar. 06, 1989
Ruediger Froese-Peeck, Munich, DE;
Richard Poleschinski, Munich, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
Method and apparatus for automatically adjusting the focus of cathode ray tubes which can be utilized with cathode ray tubes used as monitors or for television sets that are operated with different field frequencies and different number of scan lines. A specific image such as a fine checkerboard pattern or a fine line pattern is produced on the monitor which is to be adjusted and the image is then picked up with a solid state camera; the image magnification and resolution are selected such that the fine pattern is acquired with full resolution in the camera signal. The camera signal is evaluated using a known image processing system and the image focus of the image acquired by the camera is calculated by using histogram calculations. The width of the histogram curve is a measure of the image focus and the image focus is either manually or automatically adjusted.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile