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. 12, 2002
Filed:
Aug. 13, 1991
William R. Short, Ashland, MA (US);
Robert Preston Parker, Westboro, MA (US);
Richard A. Kirkpatrick, Lynnfield, MA (US);
Bose Corporation, Farmington, MA (US);
Abstract
A noise reducing AM receiver has a receiving stage for receiving an AM signal of carrier frequency separated from that in an adjacent channel by a predetermined spacing and that may have a noise component. A detecting stage is coupled to the receiving stage for detecting at least a first portion of the received AM signal. A filter is coupled to the detecting stage for extracting a spectral component from at least a first portion of the received AM signal. A noise detector is coupled to the filter for detecting the presence of a predetermined amount of noise in the spectral component and for providing a blanking control signal in the presence of at least the predetermined amount of noise. A first noise blanker is responsive to the blanking control signal to process at least one portion of the received signal in response to the control signal to reduce the audibility of the noise component.