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:
Sep. 16, 2014
Filed:
Mar. 18, 2013
Widex A/s, Lynge, DK;
Niels Ole Knudsen, Humlebak, DK;
Widex A/S, Lynge, DK;
Abstract
In a hearing aid (), a direct-digital H-bridge output driver stage () driven by a sigma-delta modulator () is configured to operate in a power-saving three-level output mode or a power-consuming two-level output mode. The three-level output mode of the H-bridge output driver stage () has low power consumption but suffers the disadvantage of emitting capacitive noise potentially interfering with the reception of radio signals in a radio receiver () in the hearing aid (). By providing a novel method of selecting the two-level output mode whenever the radio receiver () is receiving signals, and selecting the three-level output mode whenever the radio receiver () is idle, this capacitive interference does not disturb the radio receiver () in the hearing aid (). The invention provides a method and a hearing aid.