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. 02, 2001
Filed:
Apr. 01, 1994
Applicant:
Inventor:
Kurt M. Conover, Albuquerque, NM (US);
Assignee:
Honeywell Inc., Morristown, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 3/24 ;
U.S. Cl.
CPC ...
H04N 3/24 ;
Abstract
A method and circuit to strip the composite synchronization (sync) from a composite video signal is disclosed. This invention utilizes a phase-locked loop and a switchable input operational amplifier to remove the sync portion of the video signal without bandlimiting or introducing non-linearities to the video signal. The phase-locked loop creates a high frequency clock from which a signal can be created that fully encompasses the sync portion of the composite video signal. This signal controls the switchable input operational amplifier to select blank level voltage during sync or allow the video to pass when sync is not present.