Charles Wu

US Patent:

6992658, Jan 31, 2006

Filed:

Oct 31, 2002

Appl. No.:

10/285258

Inventors:

Charles Wu - Palo Alto CA, US
Jin Guo - Sunnyvale CA, US
Lu Chang - Cupertino CA, US
Carlos McEvilly - Redwood City CA, US

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

G09G 5/00
G06K 11/06

US Classification:

345169, 345157, 345173, 178 1801

Abstract:

An apparatus and a method for entering information into an electronic device are provided. The apparatus () includes five text-input buttons (, etc) that can be activated by pressing or by touching. In one embodiment, the buttons are located on a disk (). Text is entered by pressing or touching a single text-input button and then passing a finger or thumb over additional buttons in a prescribed order. The apparatus may be used in conjunction with additional input devices, such as an ‘accept’ or ‘OK’ button. Four navigation buttons (, etc) are also provided. In one embodiment, these are additional buttons. In a further embodiment, four of the five text-input buttons are selectable as navigation buttons. The selection may be achieved by rotation of the disk () on which the buttons are located. The apparatus may also include a rotatable wheel or roller () to permit scrolling through lists.

US Patent:

7057607, Jun 6, 2006

Filed:

Jun 30, 2003

Appl. No.:

10/609998

Inventors:

Eddy Mayoraz - Palo Alto CA, US
Jin Guo - Sunnyvale CA, US
Charles Yimin Wu - Palo Alto CA, US

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

G09G 5/00

US Classification:

345173, 345174, 345177, 382116, 382117, 382118, 382181, 178 1801, 178 1803

Abstract:

A user interface method and apparatus for an electronic device operates by detecting () a stroke of a touch sensitive display () forming a part of the electronic device. The stroke is categorized () as one of a swish type stroke and a non-swish type stroke. If the stroke is a non-swish stroke, it is translated () into an application function. If the stroke is a swish stroke, it is converted () to a character input function. The touch sensitive display () has a grid () containing cells (, etc. ), with each cell containing a plurality of characters, and the grid can overlay application interface to thereby occupying a common area, up to and including the entire area, of the touch sensitive display ().

US Patent:

7234119, Jun 19, 2007

Filed:

Dec 3, 2002

Appl. No.:

10/308797

Inventors:

Charles Yimin Wu - Palo Alto CA, US
Jin Guo - Sunnyvale CA, US
Sadik Kapadia - Sunnyvale CA, US

Assignee:

Motorola Inc. - Schaumburg IL

International Classification:

G06F 3/00

US Classification:

715864

Abstract:

A portable electronic device () and method () is capable of editing processed data input. The portable electronic device () comprises a display area () and a processor () coupled to the display area. The device collects () data input and, then, removes () the data input from the display area in response to detecting () an input delay. Thereafter, the processor, in response to receiving () an undo command message, provides () the data input and/or a processed version of the data input to the display area.

US Patent:

7266780, Sep 4, 2007

Filed:

Jun 30, 2003

Appl. No.:

10/610070

Inventors:

Carlos McEvilly - Cupertino CA, US
Sreeram Balakrishnan - Los Altos CA, US
Lu Chang - Capertino CA, US
Jin Guo - Sunnyvale CA, US
Sadik Kapadia - East Palo Alto CA, US
Rudolf Schusteritsch - Mountain View CA, US
Charles Yimin Wu - Palo Alto CA, US

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

G06F 3/23
G09G 5/00

US Classification:

715811, 715854

Abstract:

A structure and method for entering data into an electronic device (). A deterministic data input element () coupled to the electronic device () is operable to accept a user-selected data input. Modulation of a motion of a non-deterministic data input element () coupled to the electronic device () is operable to select a varying precision of data input choices. A feedback element () coupled to one or more of the deterministic data input element () and the non-deterministic data input element () presents the data input choices to the user. The user enters data into electronic device () using one of the deterministic input element () and the non-deterministic input element () and the feedback element () displays a sequence of data choices to the user. The user then navigates a tree of possible data completions in order to select a particular data completion to be entered into the electronic device ().

US Patent:

7619448, Nov 17, 2009

Filed:

Dec 17, 2007

Appl. No.:

12/002618

Inventors:

Charles Qingle Wu - Palo Alto CA, US

Assignee:

OmniVision Technologies, Inc. - Santa Clara CA

International Classification:

H03B 1/00
H03K 19/094

US Classification:

327108, 330258, 326121, 326127

Abstract:

A transmitter provides fast settling times, slew rate control, and power efficiency while reducing the need for large external capacitors. The transmitter typically includes a pre-driver, driver, and replica circuit. The pre-driver can shift the voltage level of an input signal to produce a shifted signal. The pre-driver can shift the voltage level in response to a selectable load resistance circuit and a voltage regulation feedback signal. The driver receives the shifted signal and generates a driver output signal in response to the received shifted signal. The replica circuit can be a scaled replica of the pre-driver and the driver using scaled components from the pre-driver and driver circuits. The scaled components can be used to generate the voltage regulation feedback signal. The generated voltage regulation feedback signal represents, for example, whether the output voltage of the driver output is above a reference voltage.

US Patent:

7646220, Jan 12, 2010

Filed:

Sep 27, 2007

Appl. No.:

11/904652

Inventors:

Charles Qingle Wu - Palo Alto CA, US

Assignee:

OmniVision Technologies, Inc. - Santa Clara CA

International Classification:

H03K 19/0175
H03K 19/094
H03K 19/082

US Classification:

326 82, 326 80, 326 81, 326 83, 326 84, 326 85, 326 86, 326 87, 326 88, 326 89, 326 90, 326 91, 326 92

Abstract:

A rail-to-rail high speed subLVDS receiver demonstrates good jitter and duty cycle performance for high-speed signals at low power supply levels. A sample receiver includes a voltage shifter for shifting the voltage levels of a differential input signal so that a shifted differential input signal is produced. The shifted differential input signal can be applied to a first differential pair, and the differential input signal can be applied to a second differential pair. The outputs of the first and second differential pairs can be summed together to produce a differential output signal. The differential output signal can be output using an output block. A clamp circuit can be used to adjust the gain of the first differential pair responsive to a common mode voltage of the first and second differential input signals.

US Patent:

7804345, Sep 28, 2010

Filed:

Jan 15, 2008

Appl. No.:

12/014712

Inventors:

Charles Qingle Wu - Palo Alto CA, US

Assignee:

OmniVision Technologies, Inc. - Santa Clara CA

International Classification:

H03K 5/12

US Classification:

327170, 327108, 326 82

Abstract:

A driver circuit provides fast settling times, slew rate control, and power efficiency, while reducing the need for large external capacitors. A voltage reference circuit generates a voltage reference signal. A comparator compares the voltage reference signal and a driver output signal and generates an output high voltage control signal. An output driver includes a first and a second switch that are coupled together. The first and second switches are further coupled to generate the driver output signal in response to coupling the output high voltage control signal to the control terminal of the first switch and coupling an input signal to the control terminal of the second switch.

US Patent:

7868676, Jan 11, 2011

Filed:

Aug 20, 2010

Appl. No.:

12/860449

Inventors:

Charles Qingle Wu - Palo Alto CA, US

Assignee:

OmniVision Technologies, Inc. - Santa Clara CA

International Classification:

H03K 5/12

US Classification:

327170, 327108, 327112

Abstract:

A driver circuit includes a pre-driver and an output driver. The pre-driver is coupled to receive an input signal and to generate first and second pre-driver output signals in response to the input signal. The output driver generates a driver output signal and includes first and second switches, a native mode transistor, and a driver output. The first switch has a first control terminal coupled to receive the first pre-driver output signal. The second switch has a second control terminal coupled to receive the second pre-driver output signal. The native mode transistor is coupled in series between the first switch and the second switch and has a third control terminal coupled to receive the voltage reference signal. The driver output is coupled between the native mode transistor and the second switch to output the driver output signal.