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. 08, 1998
Filed:
Jun. 10, 1997
Alexander Julian Eglit, Half Moon Bay, CA (US);
Paradise Electronics, Inc., San Jose, CA (US);
Abstract
A display unit which can determine the frequency (original frequency) used by a graphics source for generating an analog signal. A sequence of test patterns are generated according to a predetermined convention. The sequence of test patterns are encoded in an analog display signal in a graphics source and transmitted to a digital display unit. The digital display unit samples the analog display signal to generate a sequence of sampled values. The digital display unit determines whether the sampled values equal one of the sequence of test patterns based on the predetermined convention. The digital display unit varies (changes) the sampling frequency until the sampled values equal one of the sequence of test patterns. The sampling frequency equals the original frequency when the sampled values equal the sequence of test patterns. In one embodiment, zeros and ones are used in alternate positions of each horizontal line. The absence of runs in the sampled values indicates that the sampling frequency equals the original frequency.