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:
Jan. 23, 2001
Filed:
Jun. 27, 1997
J. William Whikehart, Novi, MI (US);
Nicholas Lawrence Difiore, Farmington Hills, MI (US);
John Elliott Whitecar, Plymouth, MI (US);
Visteon Global Technologies, Inc., Dearborn, MI (US);
Abstract
An adaptive bandwidth control system optimizes radio reception by controlling intermediate frequency bandwidth and baseband bandwidth to reduce both interference and noise while remaining compatible with AM broadcasts using the NRSC-1 standard. An adaptive IF filter detects the presence of interfering undesired sources. The IF bandwidth is narrowed if any interferers are detected. Simultaneously, the frequency content of the demodulated baseband signal is analyzed to control an optimal baseband bandwidth so that any frequencies containing substantially only noise are eliminated.