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:
Nov. 14, 2000
Filed:
Mar. 20, 1997
Applicant:
Inventors:
Takahiro Kusano, Yokohama, JP;
Hideyuki Hagino, Kumagaya, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
386 51 ; 386 68 ; 386113 ;
Abstract
A noise-bar period detection circuit detects a noise bar period in response to a low-frequency carrier wave FM signal contained in a signal reproduced by a video head when a video tape is reproduced in a special mode so as to output a noise-bar detection signal. A reproduced-signal processing circuit including a clamp circuit, an AGC circuit and the like maintains normal voltage immediately before the noise bar period in response to the noise-bar detection signal output from the noise-bar period detection circuit. Therefore, restoration to a normal state can be performed immediately after the noise bar period.