Wing Hong Chow, 722755 N Lake Blvd UNIT 36, Tahoe City, CA 96145

6980188, Dec 27, 2005

Mar 27, 2000

09/536858

Edwin Lyle Hudson - Los Altos CA, US
Wing Hong Chow - San Jose CA, US

Aurora Systems, Inc. - San Jose CA

G09G003/36

345 90, 345 98, 345204

A multiplexed pixel display includes a plurality of pixel electrodes, a plurality of storage elements, a first voltage supply terminal, a second voltage supply terminal, a common electrode, and a plurality of multiplexers each selectively coupling an associated one of the pixel electrodes with one of the first voltage supply terminal and the second voltage supply terminal responsive to a value of a data bit stored in an associated one of said storage elements. A controller is configured to sequentially write each bit of multi-bit data words to the storage elements, and assert, while each bit is stored in the storage elements, a first predetermined voltage on the first voltage supply terminal, a second predetermined voltage on the second voltage supply terminal, and a third predetermined voltage on the common electrode, for a time dependent on the significance of the stored bit. Various alternate controllers facilitate the use of additional driving schemes.

7129920, Oct 31, 2006

May 19, 2003

10/441474

Wing Hong Chow - Sunnyvale CA, US

eLCOS Mircrodisplay Technology, Inc. - Sunnyvale CA

G09G 3/36
G09G 5/10

345 89, 345690

A method is provided for compensating for output nonuniformity on a display. The method comprises characterizing the display. The method further includes creating a set of data tables wherein one table provides data for compensation along vertical axes of the display and a second table provided data for compensation along horizontal axes of the display, and wherein components of the tables include a linear offset factor to correct data for nonuniformity and a slope factor which permits gray scale information to be recovered at points near the limits of the gray scale range. The characterizing step may include using a optical detector to obtain optical output information from the display. The slope factor may be calculated to preserve top end gray scale range of the display by adjusting luminous output so that input data level maps to separate output grey levels between a truncated and an untruncated level.

7379043, May 27, 2008

Sep 20, 2005

11/231123

Edwin Lyle Hudson - Los Altos CA, US
Wing Hong Chow - San Jose CA, US

Aurora Systems, Inc. - San Jose CA

G09G 3/36

345 90, 345 89, 345 98, 345690, 345208

A multiplexed pixel display includes a plurality of pixel electrodes, a plurality of storage elements, a first voltage supply terminal, a second voltage supply terminal, a common electrode, and a plurality of multiplexers each selectively coupling an associated one of the pixel electrodes with one of the first voltage supply terminal and the second voltage supply terminal responsive to a value of a data bit stored in an associated one of said storage elements. A controller is configured to sequentially write each bit of multi-bit data words to the storage elements, and assert, while each bit is stored in the storage elements, a first predetermined voltage on the first voltage supply terminal, a second predetermined voltage on the second voltage supply terminal, and a third predetermined voltage on the common electrode, for a time dependent on the significance of the stored bit. Various alternate controllers facilitate the use of additional driving schemes.

7990353, Aug 2, 2011

Sep 18, 2006

11/532869

Wing Hong Chow - Sunnyvale CA, US

Jasper Display Corp. - Hsinchu

G09G 3/36

345 89, 345690, 345 87, 345 88

A method is provided for compensating for output nonuniformity on a display. The method comprises characterizing the display. The method further includes creating a set of data tables wherein one table provides data for compensation along vertical axes of the display and a second table provided data for compensation along horizontal axes of the display, and wherein components of the tables include a linear offset factor to correct data for nonuniformity and a slope factor which permits gray scale information to be recovered at points near the limits of the gray scale range. The characterizing step may include using a optical detector to obtain optical output information from the display. The slope factor may be calculated to preserve top end gray scale range of the display by adjusting luminous output so that input data level maps to separate output grey levels between a truncated and an untruncated level.

8344980, Jan 1, 2013

May 23, 2008

12/154602

Edwin Lyle Hudson - Los Altos CA, US
Wing Hong Chow - San Jose CA, US

OmniVision Technologies, Inc. - Santa Clara CA

G09G 3/36

345 90, 345 98, 345204, 345208, 345210, 345214

A multiplexed pixel display includes a plurality of pixel electrodes, a plurality of storage elements, a first voltage supply terminal, a second voltage supply terminal, a common electrode, and a plurality of multiplexers each selectively coupling an associated one of the pixel electrodes with one of the first voltage supply terminal and the second voltage supply terminal responsive to a value of a data bit stored in an associated one of said storage elements. A controller is configured to sequentially write each bit of multi-bit data words to the storage elements, and assert, while each bit is stored in the storage elements, a first predetermined voltage on the first voltage supply terminal, a second predetermined voltage on the second voltage supply terminal, and a third predetermined voltage on the common electrode, for a time dependent on the significance of the stored bit. Various alternate controllers facilitate the use of additional driving schemes.

6151011, Nov 21, 2000

Feb 27, 1998

9/032174

W. Spencer Worley - Half Moon Bay CA
Edwin Lyle Hudson - Los Altos CA
William Thomas Weatherford - San Mateo CA
Wing Hong Chow - San Jose CA

Aurora Systems, Inc. - San Jose CA

G09G 510

345147

A system and method for reducing the phase difference between adjacent gray scale values employ compound data words. The compound data words include a first group of data bits and a second group of data bits. A display driver circuit is configured to provide display control signals causing each bit of the first group of data bits to be asserted on the display pixel for a coequal time period, and causing each bit of the second group of data bits to be asserted on the display pixel for a time period dependent on an associated significance of each bit. Optionally, the display driver circuit further includes a compound data generator configured to provide the compound data words. A method for asserting a compound data word on a display pixel includes the steps of asserting each bit of the first group of bits on the display pixel for a coequal time period, and asserting each bit of the second group of bits on the display pixel for a time period dependent on an associated significance of each bit.

6144356, Nov 7, 2000

Nov 14, 1997

8/970307

William Thomas Weatherford - San Mateo CA
W. Spencer Worley - Half Moon Bay CA
Wing Hong Chow - San Jose CA

Aurora Systems, Inc. - San Jose CA

G09G 336

345100

A system and method for planarizing n-bit display data into m-bit data. The system includes a plurality of input terminals, a plurality of output terminals, and a first storage bank having a bit-depth less than m. In one embodiment, the first storage bank is a bi-directional shift register including a clock input terminal, for receiving a data shift signal, and a direction terminal for receiving a direction control signal. In a particular embodiment, the bi-directional shift register includes a plurality of flip-flops and a plurality of multiplexers, both arranged in a rectangular array of columns and rows. Optionally, the system includes a second storage bank, and data is shifted into one storage bank while data is being shifted out of the other storage bank.

5815043, Sep 29, 1998

Feb 13, 1997

8/800160

Wing Hong Chow - San Jose CA
Robert L. Bailey - San Jose CA

Apple Computer, Inc. - Cupertino CA

H03B 2700

331 57

An improved ring oscillator in which frequency drift is controlled to provide reasonable accuracy is disclosed. The improved ring oscillator eliminates the frequency drift due processing variances. The ring oscillator provided by the invention incurs substantially less frequency drift than a conventional ring oscillator, but the frequency of the ring oscillator is still dependent on temperature and voltage changes. The improved ring oscillator according to the invention is particularly suited for operating as a localized oscillator that is used to facilitate periodic refreshing of DRAM within a computer.