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. 16, 2001
Filed:
Oct. 27, 1997
Applicant:
Inventors:
Vincent V. Du, San Diego, CA (US);
Kazuo Kii, San Diego, CA (US);
Assignee:
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 5/00 ; G06K 9/32 ;
U.S. Cl.
CPC ...
G09G 5/00 ; G06K 9/32 ;
Abstract
The present invention discloses a method and apparatus for generating a synchronizing signal during a frequency switch-over of an input signal from a first frequency to a second frequency in a video monitor system. The method comprises the steps of: (1) detecting the frequency switch-over; (2) maintaining the synchronizing signal at the first frequency; (3) generating the synchronizing signal at a third frequency; (4) determining if the second frequency is valid; and (5) if the second frequency is valid, generating the synchronizing signal at the second frequency.