Bryan J Cook

US Patent:

20110227825, Sep 22, 2011

Filed:

Jul 1, 2009

Appl. No.:

13/000889

Inventors:

Matthew G. Liberty - Gaithersburg MD, US
Bryan A. Cook - Silver Spring MD, US
Hua Sheng - Clarksburg MD, US

Assignee:

HILLCREST LABORATORIES, INC. - Rockville MD

International Classification:

G06F 3/033

US Classification:

345158

Abstract:

Systems, devices, methods and software are described for mapping movement or motion of a 3D pointing device into cursor position, e.g., for use in rendering the cursor on a display. Absolute and relative type mapping algorithms are described. Mapping algorithms can be combined to obtain beneficial characteristics from different types of mapping.

US Patent:

20130215019, Aug 22, 2013

Filed:

Jun 3, 2011

Appl. No.:

13/701156

Inventors:

Matthew G. Liberty - Gaithersburg MD, US
Bryan A. Cook - Silver Spring MD, US

Assignee:

Hillcrest Laboratories Inc. - Rockville MD

International Classification:

G06F 3/0346

US Classification:

345157

Abstract:

A forward pointing direction associated with a handheld device is estimated or determined by, for example, calculating a center of rotation of the device. A resultant combined or selected bias estimate may then be used to compensate the biased output of the sensor in, e.g., a 3D pointing device.

US Patent:

20220299543, Sep 22, 2022

Filed:

Jun 25, 2020

Appl. No.:

17/618997

Inventors:

- MOUNTAIN VIEW CA, US
Bryan A. COOK - Silver Spring MD, US
Zhanlue ZHAO - MOUNTAIN VIEW CA, US
Yun LI - MOUNTAIN VIEW CA, US

Assignee:

CEVA TECHNOLOGIES, INC. - MOUNTAIN VIEW CA

International Classification:

G01P 21/00
G01C 19/54
G01C 25/00
G01P 3/80
G01P 15/14

Abstract:

A method for calculating a scale factor for a gyroscope can include detecting, by a gyroscope, a physical motion of a robot, detecting, by an optical flow (OF) sensor (and/or camera), one or more image signals including information; and deriving estimates of sensor calibration parameters based on the detected physical motion and the information.

US Patent:

20210095966, Apr 1, 2021

Filed:

Feb 21, 2019

Appl. No.:

16/971120

Inventors:

- MOUNTAIN VIEW CA, US
Bryan A. COOK - SILVER SPRING MD, US
Chao WU - CLARKSVILLE MD, US

International Classification:

G01C 21/20
G01C 17/28
G01C 17/38
G01P 15/08
G01P 15/18
G01C 19/00

Abstract:

Methods, apparatus, and systems directed to calibrating a magnetometer. Among such are methods that use only the horizontal components of magnetometer measurements. Then, planar calibrated magnetic field output measurements can be used in sensor fusion with data from gyroscope(s) and accelerometer(s). In other embodiments, heading information from the planar calibrated magnetic field is fused with the heading calculated from gyroscope integration. Other such methods include any of generating combined information including 6-axis fusion information and magnetometer information; accumulating values for any of a first matrix [T] and a first vector [U] according to the combined information; generating a second matrix [{circumflex over (K)}] according to any of a pseudo-inverse of the first matrix [T] and the first vector [U]; generating any of a scale and skew matrix and an offset according to the first matrix [{circumflex over (K)}]; and calibrating the magnetometer according to any of the scale and skew matrix and the offset.

US Patent:

20190384421, Dec 19, 2019

Filed:

Aug 26, 2019

Appl. No.:

16/550881

Inventors:

Bryan A. Cook - Silver Spring MD, US
Thomas V. Trimeloni - Folsom CA, US
Andong Zhan - Cumberland MD, US
Daniel Simpkins - Bethesda MD, US
Charles W.K. Gritton - Sterling VA, US

International Classification:

G06F 3/0346
G06F 3/0354

Abstract:

Systems and methods provide for removing and/or hiding the negative effects of at least some of the latency between, e.g., detection of motion of a device such as a three-dimensional (3D) pointing device and corresponding redrawing of the cursor on a display. A method for masking latency associated with displaying a cursor on a display includes: receiving data associated with motion of an input device at a first time; using the data to determine a cursor position associated with the first time; determining a predicted cursor position at a future time relative to the first time using the determined cursor position; and displaying the cursor on the display at a position based on the predicted cursor position.

US Patent:

20190360813, Nov 28, 2019

Filed:

May 24, 2019

Appl. No.:

16/422526

Inventors:

- Wilmington DE, US
Bryan A. Cook - Silver Spring MD, US

International Classification:

G01C 21/18
H04W 4/024
H04W 4/02

Abstract:

Methods, architectures, apparatuses, systems, devices, and computer program products directed to dead reckoning for pedestrian navigation (“pedestrian dead reckoning”) and robust heading estimation in pedestrian dead reckoning. Pursuant to the methodologies and technologies provided herein, a walking direction may be derived or otherwise determined using a robust heading estimation mechanism in connection with, for example, step detection and step length determination. The robust heading estimation mechanism may be based on device orientation (e.g., on changes in device orientation). The device orientation may be obtained based on (e.g., by way of) fusion of accelerometer and gyroscope measurements.

US Patent:

20180307334, Oct 25, 2018

Filed:

Jun 15, 2018

Appl. No.:

16/010145

Inventors:

- Wilmington DE, US
Bryan A. Cook - Silver Spring MD, US
Hua Sheng - Asbury NJ, US

International Classification:

G06F 3/038
G06F 3/0346

Abstract:

Systems, devices, methods and software are described for mapping movement or motion of a 3D pointing device into cursor position; e.g., for use in rendering the cursor on a display. Absolute and relative type mapping algorithms are described. Mapping algorithms can be combined to obtain beneficial characteristics from different types of mapping.

US Patent:

20180046266, Feb 15, 2018

Filed:

Oct 27, 2017

Appl. No.:

15/796058

Inventors:

- Wilmington DE, US
Bryan A. Cook - Silver Spring MD, US

International Classification:

G06F 3/0346
G06F 17/16
G06F 3/038
G08C 17/02
G06F 3/01

Abstract:

A forward pointing direction associated with a handheld device is estimated or determined by, for example, calculating a center of rotation of the device. A resultant combined or selected bias estimate may then be used to compensate the biased output of the sensor in, e.g., a 3D pointing device.