William H Morrison

US Patent:

7053826, May 30, 2006

Filed:

Feb 3, 2005

Appl. No.:

11/051761

Inventors:

Paul W. McBurney - San Francisco CA, US
William J. Morrison - San Francisco CA, US
Justin A. Vandegrift - San Francisco CA, US
Kenneth U. Victa - San Francisco CA, US

Assignee:

Eride, Inc. - San Francisco CA

International Classification:

H04B 7/185

US Classification:

34235712

Abstract:

A roving extended range high sensitivity satellite positioning system receiver provides position fixes in adverse signal conditions as low as minus 150 dbm and with as few as three satellites by measuring the bit phase of the navData message and the codephase, and finding a simultaneous solution. Previous position fixes that were obtained in the vicinity by earlier rovers are deposited in an indexed database for consultation. A cellular phone system can be used to communicate the vicinity ID's and their database entries.

US Patent:

D525036, Jul 18, 2006

Filed:

May 5, 2003

Appl. No.:

29/181031

Inventors:

William Morrison - Flushing NY, US

International Classification:

0401

US Classification:

D 4121, D4131

US Patent:

7200414, Apr 3, 2007

Filed:

Aug 7, 2002

Appl. No.:

10/215138

Inventors:

Paul W. McBurney - San Francisco CA, US
William J. Morrison - San Francisco CA, US

Assignee:

Seiko Epson Corporation - Tokyo
eRide, Inc. - San Francisco CA

International Classification:

H04B 15/00
H04B 7/00
H04B 17/00
H04Q 7/20
G01S 1/00

US Classification:

455502, 455 6711, 455 6716, 4554561, 342356, 34235705, 34235706, 3423571, 34235712

Abstract:

A cellphone system comprises a GPS reference station located with a telephone cell site. Such GPS reference station tracks the GPS satellites visible to its local area and estimates the Doppler for each such GPS satellite. The system also includes mobile GPS receivers and cellphones that move around and through the operational area of the cell site. It is assumed that the satellite Dopplers seen by the GPS reference station will have insubstantial differences with the true Dopplers observed by other GPS receivers operating within the cell site's service area. The Doppler estimates are thus routinely communicated over a wireless telephone channel to the mobile GPS receivers and cellphones that register locally. Such mobile GPS receivers then can confidently adopt the surrogate Doppler estimates as a center starting point for their initialization frequency searches. The time required for such mobile GPS receivers and cellphones to initialize and provide a first fix is thereby substantially reduced.

US Patent:

7498983, Mar 3, 2009

Filed:

Feb 23, 2006

Appl. No.:

11/360880

Inventors:

Paul W. McBurney - San Francisco CA, US
William J. Morrison - San Francisco CA, US
Justin A. Vandegrift - San Francisco CA, US
Kenneth U. Victa - San Francisco CA, US

Assignee:

eRide, Inc. - San Francisco CA

International Classification:

G01S 1/02
G01S 5/14

US Classification:

34235715, 34235706, 34235713

Abstract:

A roving extended range high sensitivity satellite positioning system receiver provides position fixes in adverse signal conditions as low as minus 150 dbm and with as few as three satellites by measuring the bit phase of the navData message and the codephase, and finding a simultaneous solution. Previous position fixes that were obtained in the vicinity by earlier rovers are deposited in an indexed database for consultation. A cellular phone system can be used to simply communicate the current identity codes and their database entries.

US Patent:

8330652, Dec 11, 2012

Filed:

Nov 4, 2009

Appl. No.:

12/612245

Inventors:

William James Morrison - San Francisco CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

G01S 19/20
G01S 19/40

US Classification:

34235758, 34235723

Abstract:

Methods and apparatuses are provided that may be implemented in various electronic devices to possibly reduce a first-time-to-fix and/or otherwise increase the performance or efficiency of a device in determining its current estimated position. In some embodiments, it may be determined whether current estimated position is valid based, at least in part, on pseudorange measurement information and pseudorange predicted information, and such determining may include obtaining a sum-of-squares of an a-posteriori measurement residual associated with the pseudorange measurement information and the pseudorange predicted information.

US Patent:

20110102253, May 5, 2011

Filed:

Nov 4, 2009

Appl. No.:

12/612635

Inventors:

William James Morrison - San Francisco CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

G01S 19/42
G01S 19/33

US Classification:

34235725, 34235773

Abstract:

Methods and apparatuses are provided that may be implemented in various electronic devices to possibly reduce a first-time-to-fix and/or otherwise increase the performance or efficiency of a device by employing a position/velocity estimation process using at least one estimated time relationship parameter.

US Patent:

20110102260, May 5, 2011

Filed:

Nov 4, 2009

Appl. No.:

12/612598

Inventors:

William James Morrison - San Francisco CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

G01S 19/01
G01S 19/33

US Classification:

34235773

Abstract:

Methods and apparatuses are provided that may be implemented in various electronic devices to possibly reduce a first-time-to-fix and/or otherwise increase the performance or efficiency of a device by using portions of system time identifiers from different systems to determine at least one navigation system time.

US Patent:

20130328726, Dec 12, 2013

Filed:

Mar 12, 2013

Appl. No.:

13/797651

Inventors:

William James MORRISON - San Francisco CA, US
Dominic Gerard FARMER - Los Gatos CA, US
Mark L. MOEGLEIN - Ashland OR, US

Assignee:

QUALCOMM INCORPORATED - San Diego CA

International Classification:

G01S 5/02

US Classification:

342451, 342450

Abstract:

A method in a mobile device includes: receiving location signals at the mobile device; measuring sensor data at the mobile device; determining an oscillation rate of the mobile device from the sensor data; in response to the oscillation rate of the mobile device being undesirable, at least one of: (1) determining a desired sampling rate based on the oscillation rate, the desired sampling rate being different from the oscillation rate; and sampling the location signals at the mobile device at the desired sampling rate; (2) sampling the location signals at the mobile device at a randomized sampling rate; (3) disabling a power improvement technique; (4) increasing filtering of determined course information; (5) reducing a nominal filter bandwidth; or (6) increasing a present sampling rate of the location signals to satisfy Nyquist criteria for the oscillation rate; and determining the position associated with the mobile device using the location signals.