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
Portable, single member housing cord protector
Preparation of isomerically pure substituted cyclohexanols
System and method for performing image correction
Method for producing semiconductor substrate, semiconductor substrate, method for manufacturing electronic device, and reaction apparatus
Electronic circuit having shared leakage current reduction circuits
Battery structures and related methods
Wheel
  Randomly Featured Patents
Image generation method, program, and information storage medium
Method and apparatus to prevent reporting multiple reads of optical coded items
Filtration system for a compressor station
Aerosol, spray-dispensing apparatus
Charging circuit with function of avoiding battery pulling down voltage output from charging device and charging method thereof
Apparatus and method for controlling development of developer material on a photoreceptive member
Apparatus, method, mobile station and computer program product for noise estimation, modeling and filtering of a digital image
Method and system for performing equipotential sensing across a memory array to eliminate leakage currents
Microgenerator of electrical energy
Plastic bag-wicketing pin adjustment apparatus