Invention Grant
- Patent Title: Audio jack detection circuit
- Patent Title (中): 音频插孔检测电路
-
Application No.: US13569869Application Date: 2012-08-08
-
Publication No.: US09591421B2Publication Date: 2017-03-07
- Inventor: Seth M. Prentice , Julie Lynn Stultz , Yongliang Li , Graham L S Connolly , Shawn Barden
- Applicant: Seth M. Prentice , Julie Lynn Stultz , Yongliang Li , Graham L S Connolly , Shawn Barden
- 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: G01R27/08
- IPC: G01R27/08 ; G01R27/00 ; H04R1/10 ; H04R29/00 ; G01R29/26 ; H04R1/02 ; G01R27/02
Abstract:
This document discusses, among other things, a detection system configured to identify a type of a pole of a four-pole audio jack using first and second comparators. The detection system can include a bias circuit configured to bias a detection input coupled to the pole, and first and second comparators configured to compare the detection input to respective first and second thresholds to provide an indication of the type of the pole.
Public/Granted literature
- US20130021046A1 AUDIO JACK DETECTION CIRCUIT Public/Granted day:2013-01-24
Information query
