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John Hideki Wenstrand

from Redwood City, CA
Age ~36
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Also known as:
John H Wenstrand
Related to:
Pamela Wenstrand CastaPamela W Castans
Connected to:
James P Wenstrand, 100Dakota D Wenstrup, 37Leo J Wenstrup, 68Paul A Wenstrup, 67Wendy B Wensyel, 56Janet M Wenszell, 61Peter S Went, 67Sarah M Went, 44Dana D Wente, 59Hal C Wente, 40

John Wenstrand Phones & Addresses

  • Redwood City, CA
  • 35 Rondo Way #3, Menlo Park, CA 94025
  • Washington, DC
  • San Francisco, CA
  • Murphys, CA
  • Calabasas, CA
  • 35 Rondo Way, Menlo Park, CA 94025

Publications

Us Patents

Mems Based Tilt Sensor

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US Patent:
6934662, Aug 23, 2005
Filed:
Dec 19, 2003
Appl. No.:
10/741938
Inventors:
Peter D. Cooper - Sydney, AU
John S. Wenstrand - Menlo Park CA, US
Assignee:
Agilent Technologies, Inc. - Palo Alto CA
International Classification:
G01C009/10
G01P003/00
US Classification:
702154, 73509
Abstract:
A sensor system is mounted on a host for recording motion of the host over time. The sensor system includes a sensor pad having a surface with a positive slope away from a center of the surface, and a mass resting on the sensor pad. The sensor pad includes an array of pressure sensors for determining the location of the mass on the sensor pad. The sensor system can further include a memory and a controller coupled to the memory and the sensor pad. The controller can determine the motion of the host from the location of the mass and record the motion in the memory.

Resolution And Image Quality Improvements For Small Image Sensors

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US Patent:
6983080, Jan 3, 2006
Filed:
Jul 19, 2002
Appl. No.:
10/199376
Inventors:
John S. Wenstrand - Menlo Park CA, US
Todd S. Sachs - Palo Alto CA, US
Assignee:
Agilent Technologies, Inc. - Palo Alto CA
International Classification:
G06K 9/36
US Classification:
382284, 382299
Abstract:
An image having higher resolution and/or better color is generated from multiple images of a subject taken by a handheld imaging device. The motion of the device, even when a user holds the device steady, gives the images perspectives that differ by an amount ranging from a fraction of a pixel to a few pixels. The differences in perspective provide different information about the subject that can be combined to create a better image. In particular, an image shifted by a non-integer number of pixels relative to another image provides information about portions of the subject that are between the pixels of the other image and usable for increasing resolution. Images shifted relative to each other by an integer number of pixels have aligned pixels that may provide different color information for the same portion of the subject when the aligned pixels correspond sensor elements having different color filters.

Using Eye Detection For Providing Control And Power Management Of Electronic Devices

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US Patent:
7091471, Aug 15, 2006
Filed:
Mar 15, 2004
Appl. No.:
10/801014
Inventors:
John Stewart Wenstrand - Menlo Park CA, US
Todd Stephen Sachs - Palo Alto CA, US
Assignee:
Agilent Technologies, Inc. - Palo Alto CA
International Classification:
H01J 40/14
G09G 5/00
US Classification:
250221, 345211, 396 51
Abstract:
Eye detection is used as the basis for providing power management or other variations of operational parameters of a controlled device. The system includes an imager and eye detection processing which cooperate to detect light received from a person's eye. The eye detection processing generates an output that can be used for determinations regarding presence of one or more persons or presence of a specific person. This output is used as the basis for switching the controlled device between at least two power consumption states. Eye detection may also be used to allow a person to actively adjust operational conditions of the controlled device, since unnatural eye blinking patterns may be associated with particular commands.

Wavelength Selectivity Enabling Subject Monitoring Outside The Subject's Field Of View

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US Patent:
7091867, Aug 15, 2006
Filed:
Feb 20, 2004
Appl. No.:
10/783179
Inventors:
John S. Wenstrand - Menlo Park CA, US
Assignee:
Agilent Technologies, Inc. - Palo Alto CA
International Classification:
G08B 23/00
US Classification:
340576, 359229, 359548, 340439
Abstract:
A detection system for monitoring a subject remains outside the normal field of view of the subject by using a wavelength selective optical member. In one application, an eye of a driver is repeatedly or continuously illuminated and imaged without effect on the field of view of the driver. A dichroic mirror may be used to provide the wavelength selectivity. For the application in which the system is used for a motor vehicle, such as an automobile, the dichroic mirror may be achieved by coating a portion or all of the windshield so as to pass visible light, while reflecting detection light. Other applications of the detection system include monitoring a subject engaged in a person-to-person interaction, wherein a dichroic mirror is defined by a divider between the two persons.

Light Modulating Input Device For Capturing User Control Inputs

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US Patent:
7161136, Jan 9, 2007
Filed:
Jul 6, 2005
Appl. No.:
11/175757
Inventors:
John Stewart Wenstrand - Menlo Park CA, US
Jason T. Hartlove - Los Altos CA, US
Assignee:
Avago Technologies ECBU IP (Singapore) Pte. Ltd. - Singapore
International Classification:
G06M 7/00
H01J 40/14
US Classification:
250221, 345157
Abstract:
An input device comprises a light source, a light modulator, and a sensor. The light modulator is configured to emit a path of light. The light modulator is arranged relative to the light source transversely across the path of light to produce a light contrast pattern from the light modulator. The sensor module is configured to detect relative motion between the light contrast pattern and the sensor module.

Optical Navigation Device With Optical Navigation Quality Detector

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US Patent:
7176442, Feb 13, 2007
Filed:
Aug 13, 2004
Appl. No.:
10/918500
Inventors:
David Charles Feldmeier - Sunnyvale CA, US
Ramakrishna Kakarala - Santa Clara CA, US
John Stewart Wenstrand - Menlo Park CA, US
Assignee:
Avago Technologies ECBU IP (Singapore) Pte. Ltd. - Singapore
International Classification:
G06M 7/00
G09G 5/08
US Classification:
250221, 345163
Abstract:
An optical navigation system, e. g. optical mouse, determines optical navigation quality by examining some or all of the photosensors of a frame or monitoring intermediate or final results of the motion estimation system. The optical navigation quality is then used to determine the navigation output produced by the optical navigation system.

Wake-Up Detection Method And Apparatus Embodying The Same

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US Patent:
7199783, Apr 3, 2007
Filed:
Feb 7, 2003
Appl. No.:
10/360104
Inventors:
John S. Wenstrand - Menlo Park CA, US
Bruce Hamilton - Menlo Park CA, US
Assignee:
Avago Technologies ECBU IP (Singapore) Pte. Ltd. - Singapore
International Classification:
G09G 5/00
US Classification:
345156, 345213, 345588
Abstract:
An input apparatus is disclosed having a hand-sensing system, a wake-up detector, and a microcontroller. After a period of inactivity, the apparatus is placed into a sleep mode to conserve power. During the sleep mode, an electrical property that the hand-sensing system presents to the wake-up circuit is measured. If the electrical property exceeds a predetermined level, then the input apparatus is activated. In alternative embodiments, an accelerometer, a pressure switch, or a computer system's response can be used to trigger the activation of the input apparatus.

Apparatus And Method For Detecting Pupils

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US Patent:
7280678, Oct 9, 2007
Filed:
Feb 28, 2003
Appl. No.:
10/377687
Inventors:
Richard Earl Haven - Sunnyvale CA, US
David James Anvar - Sunnyvale CA, US
Julie Elizabeth Fouquet - Portola Valley CA, US
John Stewart Wenstrand - Menlo Park CA, US
Assignee:
Avago Technologies General IP Pte Ltd - Singapore
International Classification:
G06K 9/00
A61B 3/14
H04N 7/18
H04N 9/47
US Classification:
382117, 351206, 348 78
Abstract:
Methods and apparatus for pupil detection are described. First light is emitted from a first light source at a first illumination angle relative to the axis of a detector. Second light is emitted from a second light source at a second illumination angle relative to the axis. The first light and the second light can have substantially equal intensities. The second illumination angle is greater than the first illumination angle. Reflected first light and reflected second light are received at the detector. The difference between the reflected first light and the reflected second light can be determined. The difference can be used to detect the pupils of a subject's eyes.
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John Hideki Wenstrand from Redwood City, CA, age ~36 Get Report