Resources Contact Us Home
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
Selection of hash lookup keys for efficient retrieval
Polyureas made from aminocrotonates and enaminones
Touchscreen with extended conductive pattern
Medical device arm
Printer driver, printer control method, and recording medium
Active gate drive circuit
  Randomly Featured Patents
Device for measuring a force with the aid of a capacitative sensor using charge transfer
Distending nasal air filter
Plasma etching method
Imaging system and method employing beam folding
Lid infeed system using a vacuum and rotating finger
System and method for on-board waste heat recovery
Dielectric ceramic composition
Spray type dispensing closure
Wagering game with community game feature
System, method and apparatus for organizing groups of self-configurable mobile robotic agents in a multi-robotic system