Invention Grant
- Patent Title: Telephone handset coupling system
- Patent Title (中): 电话听筒耦合系统
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Application No.: US11807470Application Date: 2007-05-26
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Publication No.: US07646865B2Publication Date: 2010-01-12
- Inventor: Christopher Todd Welsh , Alan D. Michel , Michael Thomas Frank , John Charles Baumhauer, Jr. , Larry Allen Marcus
- Applicant: Christopher Todd Welsh , Alan D. Michel , Michael Thomas Frank , John Charles Baumhauer, Jr. , Larry Allen Marcus
- Applicant Address: US IN Indianapolis
- Assignee: MWM Acoustics, LLC
- Current Assignee: MWM Acoustics, LLC
- Current Assignee Address: US IN Indianapolis
- Agency: Patent Law Office of David G. Beck
- Main IPC: H04M1/00
- IPC: H04M1/00 ; H04M9/00 ; H04M11/00
Abstract:
A telephone handset that includes both a speaker and a secondary flux coil is provided. The secondary flux coil provides improved inductive coupling between the handset and a hearing aid. Due to the wiring configuration of the handset, the speaker and the secondary flux coil can be independently filtered, thus providing means for independently optimizing the performance of both the speaker and the secondary flux coil. Suitable filters include both passive circuits and digital signal processors.
Public/Granted literature
- US20080292066A1 Telephone handset coupling system Public/Granted day:2008-11-27
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