U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

US Patent Application 20050206567 - System for transmitting a signal for positioning and method for producing the system

Application 20050206567 Filed on February 25, 2005. Published on September 22, 2005

Inventors

Assignees

US Class

342/457Land vehicle location (e.g., bus, police car

Attorney, Agent or Firm

Foreign Documents

  • JP2004-052006 JP 02/26/2004

International Class

07 G01S003/02


Abstract text


A transmitting system, which is capable of transmitting a signal for positioning to an area where radio waves are hardly received, is provided. The transmitting system for transmitting the signal for positioning includes a GPS compatible mixer combining a GPS signal for positioning received by a GPS antenna and a BS broadcasting signal received by a BS antenna and outputting the combined signal, a BS-IF compatible amplifier amplifying the signal output from the GPS compatible mixer and outputting the amplified signal, a separator separating the signal output from the BS-IF compatible amplifier into a BS broadcasting signal and a GPS signal, a BS tuner receiving an input of the BS broadcasting signal output from the separator and obtaining a signal of a channel tuned by a user, a GPSBP filter passing a GPS signal included in a predetermined frequency band out of the signal output from the separator, and a GPS issuing unit.

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