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
Co-crystal compound, method for preparing the same and oxidant of gas generator propellant
Methods of using 8-carboxamido-2,6-methano-3-benzazocines
Magnetic control plane
Internal combustion engine for use with a pressurized low viscosity fuel
Measurement of thin-layered structures in X-ray computer tomography
Synthesis of (+) cortistatin A and related compounds
Method for image registration utilizing particle swarm optimization
  Randomly Featured Patents
Handheld programmer for use with computer peripherals
Scheduling a recrawl
Method for forming a water-impermeable layer in a soil
Organic light emitting diode display and pixel driving method thereof
System and method for managing traffic to a probe
Power control system
Apparatus for forming and inserting partitions into containers
Male Asparagus hybrid plant `NJ977`
Method and system for enhanced branch history prediction accuracy in a superscalar processor system
Method for producing amines from hydroxamic acids