BENJAMIN TOSHIO IMAI
Pilots at Topanga Cyn Rd, Modjeska, CA
License number
California A2641593
Issued Date
Jul 2015
Expiration Date
Jul 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
18482 Topanga Canyon Rd, Modjeska, CA 92676
Professional information
Gps Receiver
US Patent:
6778135, Aug 17, 2004
Filed:
Nov 18, 2002
Appl. No.:
10/298444
Inventors:
Andreas Warloe - Fountain Valley CA
Richard Najarian - Palos Verdes Estates CA
Benjamin Imai - Silverado CA
Richard Najarian - Palos Verdes Estates CA
Benjamin Imai - Silverado CA
Assignee:
RF Micro Devices, Inc. - Greensboro NC
International Classification:
G01S 514
US Classification:
34235712
Abstract:
The global positioning system (GPS) receiver of the present invention operates to search a range of frequencies by correlating a baseband signal corresponding to a received GPS signal with a generated frequency and a generated code at a plurality of time offsets. Address translation logic operates to group results of the correlation according to the plurality of time offsets by translating addresses received from a direct memory access (DMA) controller in order to improve the efficiency of performing a fast Fourier transform (FFT) on the results of the correlation. The transformed data produced by the FFT process are used by the GPS receiver to determine a frequency of the received GPS signal and a time offset associated with a ranging code carried in the received GPS signal.