×

Low power passive correlators for multichannel global positioning system signal receiver

  • US 6,965,631 B2
  • Filed: 03/13/2001
  • Issued: 11/15/2005
  • Est. Priority Date: 03/13/2000
  • Status: Expired due to Fees
First Claim
Patent Images

1. An apparatus comprising:

  • a circular shift register having N data samples to circularly shift a first data sample of the N data samples into a data position at a first clock frequency, the N data samples corresponding to signal received from one of K satellites in a global positioning system (GPS), the N data samples being loaded into the circular shift register at a second clock frequency, N and K being positive integer;

    K storage elements to store K code sequences, respectively, each of the K code sequences having N code samples and including a first code sample being written at a code position corresponding to the data position at a third clock frequency, the K storage elements corresponding to the K satellites; and

    a code register to store the N code samples loaded from one of the K storage elements at a fourth clock frequency, the fourth clock frequency being K times faster than the first clock frequency.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×