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
Piezoelectric quasi-resonance linear motors based on acoustic standing waves with combined resonator
Graphical planner
People engine optimization
Optical modulator module
Tiered cost model for access to a computer network
Method and apparatus for using virtual machine technology for managing parallel communicating applications
Image generation based on a plurality of overlapped swathes
  Randomly Featured Patents
Image processing apparatus and method therefor
Mechanism for handling persistent requests from stateless clients
Apparatus and method for efficiently scalable digital video decoding
High frequency continuous time filter
Systems and methods to control access to an interior of an image forming device
Method of producing aminophenol compounds
Motor home or trailer body constructions
Piezoelectric transducer signal processing circuit