GNSS architecture

• US 9,766,348 B2
• Filed: 02/08/2016
• Issued: 09/19/2017
• Est. Priority Date: 12/06/2011
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Avago Technologies General IP PTE Limited (Broadcom, Inc.)
• Inventors: Abraham, Charlie
• Primary Examiner(s): Nguyen, Chuong P
• Application Number:
  US15/018,234
• Publication Number:
  US 20160154115A1
• Time in Patent Office: 589 Days
• Field of Search: 34235723, 34235725, 34235774, 34235775, 34235746
• CPC Class Codes: G01S 19/03 Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
• CPC Class Codes: G01S 19/09 providing processing capability normally carried out by the receiver
• CPC Class Codes: G01S 19/34 Power consumption
• CPC Class Codes: G01S 19/37 Hardware or software details of the signal processing chain

Abstract

Disclosed are various embodiments of Global Navigation Satellite System (GNSS) chipsets or architecture. Based upon a requested accuracy and/or update of a host application, embodiments of the disclosure can calculate position data points on-board the GNSS chipset or allow a host processor to calculate position data points, which can allow the host processor to enter a low power mode if the requested update rate and/or accuracy allow.

Claims

1. A device comprising:

circuitry configured to;

generate data based on a signal received from a radio frequency tuner;

selectively determine a first processor or a second processor to calculate position data from the data based on an operation mode set for the device;

and

output the data to the second processor to calculate the position data when the device is set in a second operation mode, and output the data to the first processor to calculate the position data when the device is set in a first operation mode, the second operation mode being different from the first operation mode.

2. The device of claim 1, wherein the position data includes information related to at least one of a position, a velocity, or time.

3. The device of claim 1, wherein the position data is based on a least squares algorithm.

4. The device of claim 1, wherein the second operation mode corresponds to a sleep mode.

5. The device of claim 1, wherein the device is provided in a host device that includes the second processor.

6. The device of claim 1, wherein the circuitry is configured to generate the data by demodulating the signal received from the radio frequency tuner.

7. A system comprising:

a second processor; and

a device including circuitry, the circuitry being configured to;

generate data based on a signal received from a radio frequency tuner;

selectively determine a first processor or the second processor to calculate position data from the data based on an operation mode set for the device;

and

output the data to the second processor to calculate the position data when the device is set in a second operation mode, and output the data to the first processor to calculate the position data when the device is set in a first operation mode, the second operation mode being different from the first operation mode.

8. The system of claim 7, wherein the second processor is configured to calculate the position data based on the data when the device is set in the second operation mode.

9. The system of claim 8, wherein the position data that has been calculated by the second processor includes information related to at least one of a position, a velocity, or time.

10. The system of claim 7, wherein the position data includes information related to at least one of a position, a velocity, or time.

11. The system of claim 7, wherein a power consumption of the circuitry at the first operation mode is higher than a power consumption of the circuitry at the second operation mode.

12. The system of claim 7, wherein the second processor is configured to determine whether the device is set in the first operation mode or the second operation mode, and transmit a result of the determination to the device.

13. The system of claim 12, wherein the determination is based on a type of location application that the system requires.

14. The system of claim 12, wherein the determination is based on at least a precision parameter or an update rate parameter, the precision parameter being related to accuracy.

15. A device comprising:

circuitry configured to;

receive a signal from a radio frequency tuner and output data based on the received signal;

selectively determine a first processor or a second processor to calculate position data from the output data based on an operation mode set for the device;

and

output the data to the second processor to calculate the position data when the device is set in a second operation mode, and output the data to the first processor to calculate the position data when the device is set in a first operation mode, the second operation mode being different from the first operation mode.

16. The device of claim 15, wherein the position data includes information related to at least one of a position, a velocity, or time.

17. The device of claim 15, wherein the position data is based on a least squares algorithm.

18. The device of claim 15, wherein a power consumption of the circuitry at the first operation mode is different from a power consumption of the circuitry at the second operation mode.

19. The device of claim 15, wherein the device is provided in a host device that includes the second processor.

20. The device of claim 15, wherein the circuitry is configured to set the first operation mode or the second operation mode based on information received from the second processor.