Invention Grant
- Patent Title: Automatic-switching wireless communication device
- Patent Title (中): 自动切换无线通信设备
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Application No.: US10595758Application Date: 2004-11-10
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Publication No.: US07826805B2Publication Date: 2010-11-02
- Inventor: Masahisa Masuda , Yasuhiro Kume
- Applicant: Masahisa Masuda , Yasuhiro Kume
- Applicant Address: US OR Lake Oswego
- Assignee: Matech, Inc.
- Current Assignee: Matech, Inc.
- Current Assignee Address: US OR Lake Oswego
- Agency: Stolowitz Ford Cowger LLP
- International Application: PCT/US2004/037406 WO 20041110
- International Announcement: WO2005/048574 WO 20050526
- Main IPC: H04B1/38
- IPC: H04B1/38
Abstract:
A base unit and a handset comprise a wireless part, a control part, and a transmission (151) and reception part (150), respectively. Communications are switched by either of the two ways: PTT switching and tone generation in the base unit, and tone detection in the handset or PTT switching in the base unit, and voice detection in the handset. It is preferable that the transmission (151) and reception (150) part of the handset includes a single transducer type headphone. It is also preferable that photo-coupler (41, 43) and a photo-switch (42) are provided at connection point of signal paths between the transmission (151) and reception part (150), the control part, and between the control part and the wireless part.
Public/Granted literature
- US20080274764A1 Automatic-Switching Wireless Communication Device Public/Granted day:2008-11-06
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