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:
Aug. 12, 2025
Filed:
Dec. 20, 2022
Acer Incorporated, New Taipei, TW;
ACER INCORPORATED, New Taipei, TW;
Abstract
An electronic system includes a fan module, an embedded controller, a reference microphone, a stereo speaker module, a beam-forming control module and an ANC controller. The beam-forming control module controls the orientation of the stereo speaker module, which provides a noise cancellation signal according to a speaker control signal. The reference microphone outputs a wide-band noise signal associated with the operation of the fan module. A virtual microphone module in the active noise cancellation controller outputs a virtual error signal according to a first transfer function between the reference microphone and a physical error microphone at a predetermined fan speed, a second transfer function between the stereo speaker module and the physical error microphone when the fan module is not in operation and the wide-band noise signal. The ANC controller provides the speaker control signal according to a synchronization signal, the wide-band noise signal and the virtual error signal.