Control and features for satellite positioning system receivers

• US 8,947,300 B2
• Filed: 07/29/2011
• Issued: 02/03/2015
• Est. Priority Date: 09/02/2003
• Status: Expired due to Fees

• Current Assignee: CSR Technology Incorporated (Qualcomm, Inc.)
• Original Assignee: CSR Technology Incorporated (Qualcomm, Inc.)
• Inventors: Chansarkar, Mangesh, Raman, Sundar, Norman, Charles P., Underbrink, Paul A., Falk, Henry D., Brown, James, Harvey, Robert, Michali, Peter, Higgins, Williams, Zhang, Gensheng, Zhang, Qingwen
• Primary Examiner(s): Phan, Dao
• Application Number:
  US13/193,863
• Publication Number:
  US 20110316741A1
• Time in Patent Office: 1,285 Days
• Field of Search: 342/357.25, 342/357.4, 342/357.46, 342/357.74, 342/357.77, 701/468, 701/470
• US Class Current: 342/357.4
• CPC Class Codes: G01S 19/13 Receivers
• CPC Class Codes: G01S 19/24 Acquisition or tracking or demodulation of signals transmitted by the system synchronisation aspects of direct sequence spread spectrum modulation H04B1/7073
• CPC Class Codes: G01S 19/34 Power consumption
• CPC Class Codes: G01S 19/37 Hardware or software details of the signal processing chain
• CPC Class Codes: H04B 1/707 using direct sequence modulation
• CPC Class Codes: H04B 2201/70715 with application-specific features

Abstract

Control and feature systems for processing signals from a satellite positioning system include an expert system receiver manager; a joint detection, carrier centering and bit sync acquisition subsystem; peak detection; a multi-dimensional measurement interpolation subsystem; a system for mode switching between a navigational signal; and power control module for receiver.

Claims

1. A satellite positioning receiver comprising:

a first subsystem within the satellite positioning receiver that processes satellite positioning signals into processed satellite signals;

a second subsystem that receives processed satellite positioning signals; and

a structure that enables the processed satellite positioning signals to be passed from the first subsystem to the second subsystem, where the data structure has a first circular data structure that receives the processed satellite signals and a second circular data structure that makes the processed satellite signals available to the second subsystem.

2. The satellite positioning receiver of claim 1, where the first data structure and the second data structure have a plurality of corresponding data locations with each pair of data locations forming a channel.

3. The satellite positioning receiver of claim 2, where the first subsystem waits for the second subsystem to finish with a channel before the first subsystem places processed satellite positioning signal data into the channel just accessed by the second subsystem.

4. The satellite positioning receiver of claim 1, where the first subsystem and the second subsystem access one of the channels at the same time until the first subsystem access another one of the channels.

5. A satellite positioning receiver comprising:

a first subsystem within the satellite positioning receiver that processes satellite positioning signals into processed satellite signals;

a second subsystem that receives processed satellite positioning signals; and

a memory subsystem that enables the processed satellite positioning signals to be passed from the first subsystem to the second subsystem, where the first subsystem uses a first circular link list of channels in the memory subsystem to process the satellite signals and the second subsystem uses a second circular link list of the same channels in the memory subsystem to process the processed satellite signals available to the second subsystem.

6. The satellite positioning receiver of claim 5, where the first data circular link list and the second circular link list have a plurality of corresponding data locations in the memory subsystem with each pair of data locations forming a channel.