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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.:

US 4007486 B1

PDFFull Text
Date of Patent:
Feb. 08, 1977

Filed:

Sep. 30, 1975

Phase locking system for television signals using a digital memory

Applicant:
Inventors:

Masao Inaba, Tokyo, JA;

Atsumi Sugimoto, Tokyo, JA;

Mikio Shimizu, Tokyo, JA;

Masashi Onosato, Tokyo, JA;

Shigeru Miyahara, Tokyo, JA;

Kazuo Kashigi, Tokyo, JA;

Assignee:

Nippon Electric Co., Ltd., Tokyo, JA;

Attorney:
Primary Examiner:

Howard W Britton

Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358 13 ; 358-8 ; 358 19 ;
Abstract

A phase locking system locks at least one incoming composite video signal to the synchronizing signals of a second, reference wave. The incoming signal is strobed at a rate dependent upon the incoming color subcarrier into a memory, essentially on a field-by-field basis. Circuitry is provided by grouping the fields on a repeating field-tagged basis (groups of four for the NTSC signal format) to maintain signal integrity.

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Inaba, Masao. (1977). Phase locking system for television signals using a digital memory (U.S. Patent No. 4007486). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4007486

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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