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AssigneeHitachi Industrial Equipment Systems Co., Ltd.
InventorsTakamasa Kawaguchi, Tomoichi Ebata, Yutaka Shimogaki, Hitoshi Ogasawara
Estimating the term…
A position information transmitter including: a digital processing device including a CPU and a position information database storing position information of the position information transmitter and information of channels used by other position information transmitters; and a radio transmitting device executing a signal modulation, wherein the digital processing device generates spread spectrum signals from the position information of the position information transmitter and information of channels used by other position information transmitters, by using the C/A code, and the radio transmitting device modulates the spread spectrum signals and transmits modulated signals as a radio signals.
A position information transmitter comprising:
A positioning system comprising:
Dependencies are inferred from the claim text.