Invention Grant
- Patent Title: Noise-canceling headphone depletion-mode switch
- Patent Title (中): 降噪耳机耗尽模式开关
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Application No.: US13920929Application Date: 2013-06-18
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Publication No.: US09253564B2Publication Date: 2016-02-02
- Inventor: Seth M. Prentice
- Applicant: Fairchild Semiconductor Corporation
- Applicant Address: US CA San Jose
- Assignee: FAIRCHILD SEMICONDUCTOR CORPORATION
- Current Assignee: FAIRCHILD SEMICONDUCTOR CORPORATION
- Current Assignee Address: US CA San Jose
- Agency: Schwegman Lundberg & Woessner, P.A.
- Main IPC: G10K11/16
- IPC: G10K11/16 ; H04R3/00 ; H04R5/04 ; H04R1/10 ; H04R5/033
Abstract:
This document discusses, among other things, systems and methods including a depletion-mode switch configured to pass an audio signal from an input to an output in a low-impedance state when a power source is below a threshold and to isolate the input from the output in a high-impedance state when the power source is above the threshold and a noise-cancelation circuit configured to receive the audio signal from the input and to provide a modulated audio signal at the output when the power source is above the threshold.
Public/Granted literature
- US20130336506A1 NOISE-CANCELING HEADPHONE DEPLETION-MODE SWITCH Public/Granted day:2013-12-19
Information query
