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:
Apr. 08, 1997
Filed:
Jun. 07, 1995
Applicant:
Inventors:
Ronald B Lee, Northbrook, IL (US);
Larry E Nielsen, Chicago, IL (US);
Assignee:
Zenith Electronics Corporation, Glenview, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
348432 ; 348495 ;
Abstract
An ATV signal includes a field sync reference having a relatively long pseudo-random number symbol sequence followed by three relatively short pseudo-random number symbol sequences, with the middle of the three short pseudo-random number symbol sequences having inverted polarity in alternate fields.