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:
Sep. 27, 1988
Filed:
May. 07, 1985
Applicant:
Inventors:
Kazuo Kashigi, Tokyo, JP;
Keiichi Hirayama, Tokyo, JP;
Assignee:
NEC Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
340723 ; 358 22 ; 358183 ;
Abstract
A circuit for processing television signals to produce special effects includes a special effects circuit and a key signal generating circuit. Instead of generating the key signal separately and tailoring it for the desired special effects by using complicated circuits, the key signal is superimposed onto a video signal to produce a composite video signal which signal is processed to conform to the desired special effects. After the processing, the key signal is separated from the composite video signal to be used as it is intended. Thus, complicated and dedicated circuits solely for use for processing the key signal are eliminated.