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:
Feb. 08, 2011
Filed:
Jul. 31, 2008
Keiji Kobayashi, Kawanishi, JP;
Keiji Kobayashi, Kawanishi, JP;
Sanyo Electric Co., Ltd., Moriguchi-shi, JP;
Sanyo Semiconductor Co., Ltd., Ora-gun, JP;
Abstract
An FM tuner that has a multipath reception detection unit and an adjacent-channel interference detection unit while reducing expansion of the scale of the circuit is available. A control signal for a stereo separation level is generated on the basis of a signal Scorresponding to a reception field strength and of a signal Scorresponding to a multipath noise component. The Sis extracted from a fluctuation component signal Sfrom an S-meter circuitby a multipath noise extraction circuitThe multipath noise extraction circuitused for control of the stereo separation level is shared as a portion of the circuitry for detecting the multipath signal reception state. A multipath reception detection unitcompares the Swith a threshold value to detect a multipath reception state.