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:
Mar. 16, 2010
Filed:
Dec. 12, 2003
James B. Piket, Gilbert, AZ (US);
Kyle K. Iwai, Chandler, AZ (US);
Daniel S. Rokusek, Long Grove, IL (US);
James B. Piket, Gilbert, AZ (US);
Kyle K. Iwai, Chandler, AZ (US);
Daniel S. Rokusek, Long Grove, IL (US);
Continental Automotive Systems, Inc., Deer Park, IL (US);
Abstract
An echo canceller circuit () and method performs cascaded echo cancellation and noise suppression in a non-interfering manner. The echo canceller circuit () includes pre-noise suppression logic (), echo canceller coefficient logic (), noise suppression logic () and an echo canceller filter (). The pre-noise suppression logic () receives pre-echo canceller uplink data () and downlink data (), and in response produces pre-noise suppression uplink data (). The echo canceller coefficient logic () receives the pre-noise suppression uplink data () and the pre-echo canceller uplink data (), and in response produces filter coefficient data (). The noise suppression logic () receives the pre-noise suppression uplink data (), and in response produces noise suppressed uplink data (). The echo canceller filter () receives the noise suppressed uplink data () and the filter coefficient data () and in response produces final uplink data ().