System and method for receiving and processing GPS and wireless signals

• US 6,831,911 B1
• Filed: 11/18/2000
• Issued: 12/14/2004
• Est. Priority Date: 11/18/2000
• Status: Expired due to Term

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: Ashvattha Semiconductor Incorporated (InSilica, Inc.)
• Inventors: Sridharan, Kartik M., Sridharan, Guruswami M.
• Primary Examiner(s): Chin, Wellington
• Assistant Examiner(s): SCHULTZ, WILLIAM C
• Application Number:
  US09/715,502
• Time in Patent Office: 1,487 Days
• Field of Search: 370/314, 370/321, 370/337, 370/339, 370/341, 370/345, 370/347, 370/348, 370/376, 342/357.1
• US Class Current: 370/345
• 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: H04S 3/008 in which the audio signals are in digital form, i.e. employing more than two discrete digital channels data reduction aspects thereof based on psychoacoustics G10L19/02

Abstract

A system and method for processing signals from at least two sources, using a receiver having a timer and a local code sequence, the method comprising, providing at least one signal channel divided into a plurality of sequential time slots processing said signal from a first of said two sources in a first time slot of the plurality of time slots to provide a first time slot signal, processing said signal from a second of said two sources in a second time slot of the plurality of time slots to provide a second time slot signal, processing said signal from said first of said two sources in a third time slot of the plurality of time slots to provide a third time slot signal, said first, second and third time slots occurring in sequential order, comparing said local code sequence to said signals in said first and third time slots by incrementing the local code sequence during the interval between said first and third time slots.

Claims

1. A method for processing signals from at least two sources, using a receiver having a timer and a local code sequence, the method comprising;

providing at least one signal channel divided into a plurality of sequential time slots,

processing a signal from a first of said at least two sources in a first time slot of the plurality of time slots to provide a first time slot signal,

processing a signal from a second of said at least two sources in a second time slot of the plurality of time slots to provide a second time slot signal,

processing said signal from said first of said at least two sources in a third time slot of the plurality of time slots to provide a third time slot signal, said first, second and third time slots occurring in sequential order,

comparing said local code sequence to said signals in said first and third time slots by incrementing the local code sequence during the interval between said first and third time slots.

2. The method of claim 1, wherein the local code sequence is stored in memory.

3. The method of claim 1, wherein the local code sequence is generated locally.

4. The method of claim 1, wherein the signal from the first of said at least two sources is a continuous signal.

5. The method of claim 1, wherein the signal from the second of said at least two sources is a time division signal.

6. The method of claim 1, wherein the signal from the first of said at least two sources is a GPS signal.

7. The method of claim 5, wherein the signal from the second of said at least two sources is a TDMA communications signal.

8. The method of claim 3, wherein the signal from the second of said at least two sources is a GSM communications signal.

9. The method of claim 1, wherein said signal from the first of said at least two sources is processed in real time.

10. The method of claim 1, wherein said signal from the first of two sources is stored in a memory and retrieved from the memory, after a predetermined period of time.

11. A receiver for processing signals from at least two sources comprising;

a first antenna electrically connected to a first RF-to-baseband-converter and a second antenna electrically connected to a second RF-to-baseband-converter,

a synthesizer electrically connected to the first RF-to-baseband-converter and second RF-to-baseband-converter

a code generation correlator, connected to the first RF-to-baseband-converter for correlating a received code and a local code, and

a master clock for keeping local time electrically connected to the code generation correlator and the first RF-to-baseband-converter.