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
System and method for providing radio communication in a land mobile radio system
Catalyst compositions for hydroformylation reaction and hydroformylation process using the same
Support tray for server
Systems and methods for authorizing, authenticating and accounting users having transparent computer access to a network using a gateway device
Methods and system for displaying segmented images
Emergency call notification for network services
Voltage detecting device for LED driver
  Randomly Featured Patents
Roasted soybean hypocotyls and beverage material containing the same
Transmitter circuit and communication apparatus
Hybrid robust predictive optimization method of power system dispatch
Semiconductor pressure sensor
Multiple spot size optical profilometer, ellipsometer, reflectometer and scatterometer
Disc coin sorter with positive guide wall between exit channels
Elastomeric polyolefins production and recovery
Aerator and mixer
Fastener clip
Method and apparatus for shaping belt straps to enable them to be pulled through support roller stations