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:
Dec. 15, 1992
Filed:
May. 07, 1991
Applicant:
Inventor:
Saburou Nakazato, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
358330 ; 358310 ; 360 27 ; 360 331 ;
Abstract
Disclosed is an information signal discriminating apparatus adapted to ascertain the type of an information signal which includes a synchronizing signal and which is modulated by one of a plurality of types of modulation carrier signals having respective different frequencies. The information signal type is ascertained quickly by detecting the frequency of a synchronizing signal section included in the information signal concerned. In other words, the frequency thus detected indicates the information signal type.