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
Drive and startup for a switched capacitor divider
Method and device for managing devices in device management system
Plants and seeds of hybrid corn variety CH260114
Stool
Semiconductor device
Exposure apparatus, exposure method, and device manufacturing method
Use of Lactobacillus for liver protection
  Randomly Featured Patents
Method and device for producing a friction or rubbing element
Watch
Vacuum pump
Toric optic for ophthalmic use
Modular expandable honing tool
Dehider with governor and strengthened blade
Connection fitting for tubular conduits
Semiconductor integrated circuit for developing a system using a microprocessor
Handling of messages in a electronic messaging system
Method for fabricating a solid-state image sensing