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:
May. 22, 1984
Filed:
Apr. 05, 1982
Applicant:
Inventor:
Mineo Mizukami, Tokyo, JP;
Assignee:
Nippon Electric Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
358 19 ; 358150 ;
Abstract
Synchronizing signals in a PAL system are generated without the need for an n f.sub.H oscillator by generating a reference signal having 568 cycles per line, adding a half cycle per line and then substracting one cycle per field. Pre-synchronizing signals are generated from the processed reference signal and the pre-synchronizing signals are then phase shifted by an amount which varies linearly with respect to elapsed time during each field from a value of zero to a value of substantially 1/(2 f.sub.sc).