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:
Apr. 27, 2010
Filed:
Mar. 27, 2006
Hisashi Suganuma, Saitama, JP;
Hisashi Suganuma, Saitama, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
It is an object of the present invention to provide an improved noise removal device having an improved noise removal precision. A second noise extracting unit extracts a noise of an IF signal, and outputs a second noise signal which is then smoothed by a second noise smoothing unit to produce a second noise-smoothed signal. A noise hold control signal generating unit compares the second noise-smoothed signal with the second noise signal to produce a noise hold control signal indicating an occurring position and an occurring period of the noise of the IF signal. A first noise extracting unit extracts a noise of an FM detection signal, and outputs a first noise signal. A noise hold unit holds the first noise signal in accordance with the noise hold control signal to produce a held noise signal which is then smoothed by a first noise smoothing unit to produce a first noise-smoothed signal. A hold control signal generating unit compares the first noise-smoothed signal with the first noise signal to produce a hold control signal indicating an occurring position and an occurring period of the noise of the FM detection signal. Subsequently, a hold unit operates to hold the FM detection signal in accordance with the hold control signal, thereby generating and thus outputting an FM detection signal not containing any noise.