Global positioning system receiver capable of simultaneously receiving global positioning system signal and frequency modulation sub-wave signal

• US 20070247360A1
• Filed: 10/05/2005
• Published: 10/25/2007
• Est. Priority Date: 07/08/2005
• Status: Abandoned Application

• Current Assignee: Jabil Circuit Taiwan Ltd. (Jabil Inc.)
• Original Assignee: Jabil Circuit Taiwan Ltd. (Jabil Inc.)
• Inventors: Hsu, Hsin-Chih
• Application Number:
  US11/242,833
• Publication Number:
  US 20070247360A1
• Time in Patent Office: Days
• US Class Current: 342/357.310
• CPC Class Codes: H04B 1/38 Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving

Abstract

A global positioning system (GPS) receiver capable of simultaneously receiving a global positioning system signal and a frequency modulation sub-wave signal includes two antennas, one for receiving a GPS signal and the other for receiving a frequency modulation (FM) sub-wave signal such that these signals are computed and resolved by a hardware interface, and sent to an electronic device connected with the hardware interface. The electronic device can simultaneously read a positioning coordinate data and a TMC data, so that an electronic map, a navigation system or other GPS software installed in the electronic device can accurately position a current position and provide the traffic conditions of the current position, so that a user can know about the road conditions, plan a path, and decide the best traveling path.

Claims

1. A global positioning system receiver capable of simultaneously receiving global positioning system signal and frequency modulation sub-wave signal, comprising:

a global positioning system (GPS) signal receiving and processing circuit, for receiving a global positioning system signal and processing said global positioning system signal;

a frequency modulation sub-wave signal receiving and processing circuit, for receiving a frequency modulation sub-wave signal and processing said frequency modulation sub-wave signal;

a microprocessor, for receiving a signal transmitted from said global positioning system signal receiving and processing circuit and computing a corresponding positioning coordinate data, and for receiving a data transmitted from said frequency modulation sub-wave signal receiving and processing circuit and resolving said signal and data into a traffic message channel (TMC) data; and

a hardware interface, for receiving said positioning coordinate data and said traffic message channel data transmitted from said microprocessor and simultaneously transmitting said data out.

2. The receiver of claim 1, wherein said global positioning system signal receiving and processing circuit comprises:

a first antenna, for receiving said global positioning system signal;

a radio frequency circuit of said global positioning system signal, coupled to said first antenna for receiving said global positioning system signal transmitted from said first antenna, and amplifying, down-converting and digitizing said global positioning system signal;

a base band processor of said global positioning system, coupled to a radio frequency circuit of said global positioning system signal for receiving a signal transmitted from said radio frequency circuit of said global positioning system signal, and then sending said signal to said microprocessor after said signal is de-spread and synchronized.

3. The receiver of claim 1, wherein said frequency modulation sub-wave signal receiving and processing circuit comprises:

a second antenna, for receiving said frequency modulation sub-wave signal;

a frequency modulation tuner, coupled to said second antenna for receiving and demodulating said frequency modulation sub-wave signal transmitted from said second antenna;

a preprocessor, coupled to said frequency modulation tuner for receiving a signal transmitted from said frequency modulation tuner, and sending said signal to said microprocessor after synchronizing a data carried by said preprocessor.

4. The receiver of claim 2, wherein said frequency modulation sub-wave signal receiving and processing circuit comprises:

a second antenna, for receiving said frequency modulation sub-wave signal;

a frequency modulation tuner, coupled to said second antenna for receiving and demodulating said frequency modulation sub-wave signal transmitted from said second antenna;

a preprocessor, coupled to said frequency modulation tuner for receiving a signal transmitted from said frequency modulation tuner, and sending said signal to said microprocessor after synchronizing a data carried by said preprocessor.

5. The receiver of claim 3, wherein said hardware interface comprises a hardware interface for a cable transmission or a wireless transmission.

6. The receiver of claim 4, wherein said frequency modulation sub-wave signal is a frequency modulation sub-wave signal having a center frequency of 57 KHz and a bandwidth of 4 KHz.

7. The receiver of claim 5, further comprising at least one memory coupled to said microprocessor for storing a program required for said microprocessor to compute a positioning coordinate of said global positioning system signal and a coding rule required for said microprocessor to resolve a data in said frequency modulation sub-wave, and said microprocessor completes a computation and a resolution of said positioning coordinate data and said traffic message channel data by executing and reading said program and said coding rule.

8. The receiver of claim 6, wherein said coding rule comprises a traffic information and its corresponding codes related to an event, a place, a start time, a stop time, an average speed, an affected length, and a diverse advise route in said traffic message channel data.

9. The receiver of claim 5, wherein said microprocessor integrates said positioning coordinate data and said traffic message channel data into a text string, and then sends out said signals.

10. The receiver of claim 8, wherein said microprocessor sends out said text string in ASCII specification.