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:
Nov. 30, 1999
Filed:
Aug. 28, 1995
Alan Neal Cooper, Coppell, TX (US);
David William Bauerle, Coppell, TX (US);
Ultrak, Inc., Carrollton, TX (US);
Abstract
A plurality of video cameras provide video signals to a video switcher of a video controller. The video switcher selects a video signal of one of the video cameras as the output video based upon a camera control code sent to the video switcher by a timing controller of the video controller. A video synchronization separator of the video controller reads the vertical synchronization interval and the horizontal synchronization pulse from the output video signal and sends those synchronization signals to the timing control. The timing controller generates a vertical drive signal having a plurality of vertical drive pulses that are timed with the vertical synchronization intervals from the video synchronization separator. The timing controller also generates a horizontal drive signal having horizontal drive pulses that are timed with the horizontal synchronization pulses from the video synchronization separator.