Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Apparatus for transmitting positioning signal, positioning system including the apparatus, and system for transmitting positioning signal










Image Number 14 for United States Patent #7817090.

An apparatus that can transmit a signal enabling higher accuracy of calculating positional information is provided. A transmitting apparatus transmitting a positioning signal includes an oven controller crystal oscillator (OCXO) having a thermostatic oven that keeps the temperature of a quartz resonator constant and oscillates such that variation in output frequency caused by the ambient temperature change is minimized, a voltage controlled oscillator (VCO) outputting a signal modulated in accordance with the signal from OCXO, multipliers, a code generator outputting code patterns for respectively identifying each of artificial satellites on which the transmitting apparatus is mounted to multiplier, a memory storing a navigation message, a transmitting portion, and an antenna.








 
 
  Recently Added Patents
Chair
Backside structure and methods for BSI image sensors
Error recovery storage along a memory string
Digital broadcast receiver and method for processing caption thereof
High-resolution, active reflector radio frequency ranging system
Hair care composition
Methods for testing OData services
  Randomly Featured Patents
Storage control unit with memory cache protection via recorded log
Method of monitoring human relaxation level, and user-operated heart rate monitor
Method of stabilizing graham flour, and cracker produced from said flour
Plant UDP-glucose dehydrogenase
Demodulator for an amplitude-modulated alternating signal
System and method for designing multiple clock domain circuits
Cassette loading mechanism for accommodating cassettes of various sizes
One-way clutch
Remotely controlled light flasher
Synchronous motor drive unit and a driving method thereof