Ken Kok Foo, 601581 Reston Ter, Sunnyvale, CA 94087

6404136, Jun 11, 2002

Jul 5, 2000

09/610298

David Murray - Chandler AZ
Ken Foo - Gurnee IL
Kim A. Hasler - Chandler AZ

Motorola Inc. - Schaumburg IL

G09G 310

3151691, 3151693

A method for controlling an emission current ( ) in a field emission display ( ) includes measuring an emission current ( ), measuring a portion of the plurality of pixels receiving emission current ( ) as a percentage of the plurality of pixels on the anode ( ) to define a set point, comparing measured value to set point value and adjusting gate voltage to cause emission current to approach set point value. A field emission display ( ) includes a control circuit ( ), which has an analog-to-digital converter ( ), a current controller ( ), as display timing controller ( ) and a gate voltage source ( ). Analog-to-digital converter ( ) is designed to be connected to power supply ( ). Gate voltage source ( ) is connected to gate extraction electrode ( ) and applies thereto the offset voltage, which is manipulated by current controller ( ) in response to an output signal ( ) of analog-to-digital converter ( ) and an output signal of display timing controller ( ).

7295199, Nov 13, 2007

Aug 25, 2003

10/647723

Ken K. Foo - Gurnee IL, US
Robert J. Bero - Spring Grove IL, US
Pinky Yu - Grayslake IL, US

Motorola Inc - Schaumburg IL

H04N 5/228

345214, 345 5, 345204, 345205, 348222, 249 56

A display device including a plurality of display elements () arranged in a matrix, wherein each display element includes a display pixel () coupled to a switch (), and each display element includes an addressable latch () having an output coupled to a controlling input of the switch. The addressable latch includes a row address input () and a column address input (). In one mode of operation, at least some display elements are activated at a first rate, and other display elements are activated at a second rate less than the first refresh rate by selectively addressing the display elements.

7388579, Jun 17, 2008

May 1, 2003

10/427784

Patrick O'Gorman - Grayslake IL, US
Ken Foo - Gurnee IL, US

Motorola, Inc. - Schaumburg IL

G09G 3/36
G09G 5/00
G06F 3/038

345211, 345 98, 345204

The preferred embodiments of the present invention provide a system and method for reducing the battery power required by a handheld device () that incorporates a graphical display (). Graphical display (), display drivers (), LCD controller () and a memory () are optimized such that several pixels of information may be clocked simultaneously when the device is operating in a partial display mode. The optimized circuitry reduces the required refresh clock frequency () and thus the current drain on a device battery () thereby improving device operation time.

7619606, Nov 17, 2009

Dec 29, 2005

11/321311

John W. Kaehler - Lake Bluff IL, US
Ken K. Foo - Gurnee IL, US

Motorola, Inc. - Schaumburg IL

G09G 3/36

345102, 349 61

Disclosed are devices and methods for intradevice communication in a mobile communication device having a display. A method includes providing a supply signal and superimposing a data signal onto the supply signal. The method further includes driving a light source with the supply signal and the superimposed data signal to produce light to illuminate the display. Also included is sensing the light illuminating the display with an optical sensor, which is coupled to a receiver circuit, and then distinguishing the data signal from the sensed light with the receiver circuit. An image is formed on the display using the data signal distinguished with the receiver circuit.

7755615, Jul 13, 2010

Dec 18, 2006

11/611970

Ken K Foo - Gurnee IL, US
John W Kaehler - Lake Bluff IL, US
Pinky Yu - Grayslake IL, US

Motorola, Inc. - Schaumburg IL

G06F 3/041

345173, 345174

A touchscreen display system () is provided which includes a touchscreen (), a touchscreen input detector (), a capacitive sensor driver (), and a display driver (). The touchscreen input detector () is coupled to a first layer () of the touchscreen () and determines a touchscreen () input in response to sensing tactile inputs during a sensing time interval (). The display driver () is coupled to a second layer () of the touchscreen () and provides a drive voltage () at a first voltage level to the plurality of optical shutter segments () during a first portion () of the sensing time interval () and maintains the drive voltage () at substantially zero volts during a second portion () of the sensing time interval (), the second portion () being greater than half of the sensing time interval ().

7839414, Nov 23, 2010

Jul 30, 2007

11/830319

Adam Cybart - Mc Henry IL, US
Roger W. Ady - Chicago IL, US
John A. Burroughs - Lake Zurich IL, US
R. Dodge D. Daverman - Chicago IL, US
Ken K. Foo - Gurnee IL, US
Sen Yang - Palatine IL, US
Zhiming (Jim) Zhuang - Kildeer IL, US

Motorola Mobility, Inc. - Libertyville IL

G06T 15/60
G09G 5/00
H04N 5/202
H04N 5/57
H04N 1/46
G03F 3/08
G02B 17/00
G02B 5/12
G02B 27/00
G06K 9/00
G06K 9/40

345589, 345426, 345581, 345600, 348254, 348687, 348617, 348674, 358504, 358509, 358516, 358519, 382167, 382274, 359528, 359577, 359599

Disclosed are methods and devices for color compensation of a display having a translucent display cover applied to an outside surface of the display. A method may include characterizing a color shift due to the translucent display cover for when there is rendering of an image on the display and compensating for the color shift when rendering an image on the display. The method further may include measuring the color shift induced by the color of the finish, and as described below compensating the red, green, and blue (RGB) levels of the display so that the display image may be presented to the user as originally intended. In this way, the image quality may be substantially optimized for viewing regardless of the lens/cover surface color.

7953438, May 31, 2011

Dec 5, 2006

11/566759

Robert D. Polak - Lindenhurst IL, US
Ken K. Foo - Gurnee IL, US
John W. Kaehler - Lake Bluff IL, US
Zhiming Zhuang - Kildeer IL, US

Motorola Mobility, Inc. - Libertyville IL

H04B 1/38

455557, 4555501, 4555751

Disclosed are circuits and user interfaces of a mobile communication device that include a light source and a shutter that are driven by at least one common voltage line. Also disclosed are circuits and user interfaces of a mobile communication device that include a sensor and a shutter that are driven by at least one common voltage line. Further disclosed are circuits and user interfaces that include a light source, a sensor and a shutter that are driven by at least one common voltage line. The shutter may be divided into a plurality of segments so that one segment may be in optical alignment with a light source and another segment may be in optical alignment with a sensor. A shutter may be part of the same circuit as a light source and/or a sensor without needing its own circuit and driver.

8077154, Dec 13, 2011

Aug 13, 2007

11/838061

David M. Emig - Trenton IL, US
Ken K. Foo - Gurnee IL, US

Motorola Mobility, Inc. - Libertyville IL

G06F 3/041
G01B 7/16

345173, 73780

A capacitive sensor () for a touch sensitive electronic device () includes at least one graphic () visible to a user. The graphic () is configured so as to be non-electrically interfering with the electrode array of the capacitive sensor (). A substrate (), configured to transmit light, has a layer of capacitive sensor material () deposited thereon. The layer of capacitive sensor material () is electrically conductive and pellucid. A layer of selectively disposed electrically conductive material () is then electrically coupled to the layer of capacitive sensor material (). The layer of selectively disposed electrically conductive material () is arranged as a graphic, which may be a logo, brand, or other mark. The layer of selectively disposed electrically conductive material () has a reflectivity that is greater than the layer of capacitive sensor material () so as to make the graphic () visible to a user.