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:
Feb. 27, 1990
Filed:
Sep. 29, 1988
Mark E Faulhaber, Wilmington, DE (US);
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
The pixel clock of a system for receiving, sampling, and digitally storing the information contained in an analog sampled-data video signal is automatically synchronized and stabilized so that the received data is sampled by said system at or near the center of each successive received pixel period. A preset counter is employed to determine whether the receiving system clock is running at a predetermined number of pixel periods per horizontal sweep; any variation from the predetermined number is sensed and converted to a DC voltage level which is used to adjust the receiving system clock automatically to the correct number of periods per sweep. Synchronization of the receiving system clock is accomplished by triggering it with the sync pulse portions of the received video signal.