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:
Jun. 27, 1995
Filed:
Jan. 18, 1990
Applicant:
Inventors:
Nobukazu Hosoya, Nara, JP;
Tooru Sasaki, Osaka, JP;
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358340 ; 358330 ; 358328 ; 348607 ; 369 59 ;
Abstract
An apparatus for reducing noise in the high-frequency band is provided in the preceding stage of a limiter (8) with a high-frequency band correcting filter (12) for reducing a high-frequency band component of a reproduced RF signal from an optical disc. The reproduced RF signal has its high-frequency component lowered before entered into the limiter (18), reducing noise and beat components. As a result, a signal which is less influenced by the noise and beat and has good S/N can be obtained.