Resources Contact Us Home
Automatic-switching wireless communication device

Image Number 12 for United States Patent #7826805.

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.

  Recently Added Patents
Systems and methods for simultaneously configuring multiple independent backups
Antibodies to CCR2
Submersible remote smoke sensor
System and method for transferring data in storage controllers
Method and apparatus for prioritizing data transfer
System and method for detecting executable machine instructions in a data stream
Imaging device, method and computer readable medium
  Randomly Featured Patents
Drill hammer
Gateway for wireless mobile clients
Method and device for capsulating microbial, plant and animal cells or biological and chemical substances
Epithermal neutron decay logging
Rotary drill bits for directional drilling employing tandem gage pad arrangement with cutting elements and up-drill capability
Detection of early inter-radio access technology (IRAT) handover triggering
Snowmobile ski handle
Purified coprinus laccases and nucleic acids encoding the same
Method and apparatus for providing link-local IPv4 addressing across multiple interfaces of a network node
Programmable array I/O-routing resource