Andrea Nguyen

US Patent:

8223179, Jul 17, 2012

Filed:

Jul 27, 2007

Appl. No.:

11/881732

Inventors:

Kin Yip Kenneth Kwan - San Jose CA, US
Andrea Nguyen - San Jose CA, US
Sunny Yat-san Ng - Cupertino CA, US
William K. Zuravleff - Mountain View CA, US

Assignee:

OmniVision Technologies, Inc. - Santa Clara CA

International Classification:

G09G 5/02

US Classification:

345693

Abstract:

A novel method for driving a display having an array of pixels arranged in a plurality of columns and a plurality of rows includes the steps of defining a modulation period for a row of pixels, dividing the modulation period into a number of coequal time intervals equal to n times the number of rows in the array, receiving a multi-bit data word that indicates an intensity value, and updating the signal asserted on the pixel during a plurality of the time intervals such that the intensity value is displayed by the pixel. Note that n is an integer greater than zero. The method can be applied to all rows, which can be driven asynchronously. A display driver for performing the novel methods is also disclosed. The present invention facilitates driving the display at 100% bandwidth efficiency during each time interval in the modulation period.

US Patent:

8228356, Jul 24, 2012

Filed:

Jan 28, 2008

Appl. No.:

12/011605

Inventors:

Kin Yip Kenneth Kwan - San Jose CA, US
Andrea Nguyen - San Jose CA, US
Sunny Yat-san Ng - Cupertino CA, US
William K. Zuravleff - Mountain View CA, US

Assignee:

OmniVision Technologies, Inc. - Santa Clara CA

International Classification:

G09G 5/02

US Classification:

345693

Abstract:

A novel method for driving a display having an array of pixels arranged in a plurality of columns and a plurality of rows includes the steps of defining a modulation period for a row of pixels, dividing the modulation period into a number of coequal time intervals equal to n times the number of rows in the array, receiving a multi-bit data word that indicates an intensity value, and updating the signal asserted on the pixel during a plurality of the time intervals such that the intensity value is displayed by the pixel. Note that n is an integer greater than zero. The method can be applied to all rows, which can be driven asynchronously. A display driver for performing the novel methods is also disclosed. The present invention facilitates driving the display at 100% bandwidth efficiency during each time interval in the modulation period.

US Patent:

8237748, Aug 7, 2012

Filed:

Jan 28, 2008

Appl. No.:

12/011606

Inventors:

Kin Yip Kenneth Kwan - San Jose CA, US
Andrea Nguyen - San Jose CA, US
Sunny Yat-san Ng - Cupertino CA, US
William K. Zuravleff - Mountain View CA, US

Assignee:

OmniVision Technologies, Inc. - Santa Clara CA

International Classification:

G09G 5/10

US Classification:

345690

Abstract:

A novel method for driving a display having an array of pixels arranged in a plurality of columns and a plurality of rows includes the steps of defining a modulation period for a row of pixels, dividing the modulation period into a number of coequal time intervals equal to n times the number of rows in the array, receiving a multi-bit data word that indicates an intensity value, and updating the signal asserted on the pixel during a plurality of the time intervals such that the intensity value is displayed by the pixel. Note that n is an integer greater than zero. The method can be applied to all rows, which can be driven asynchronously. A display driver for performing the novel methods is also disclosed. The present invention facilitates driving the display at 100% bandwidth efficiency during each time interval in the modulation period.

US Patent:

8237754, Aug 7, 2012

Filed:

Jan 28, 2008

Appl. No.:

12/011604

Inventors:

Kin Yip Kenneth Kwan - San Jose CA, US
Andrea Nguyen - San Jose CA, US
Sunny Yat-san Ng - Cupertino CA, US
William K. Zuravleff - Mountain View CA, US

Assignee:

OmniVision Technologies, Inc. - Santa Clara CA

International Classification:

G09G 5/10

US Classification:

345691

Abstract:

A novel method for driving a display having an array of pixels arranged in a plurality of columns and a plurality of rows includes the steps of defining a modulation period for a row of pixels, dividing the modulation period into a number of coequal time intervals equal to n times the number of rows in the array, receiving a multi-bit data word that indicates an intensity value, and updating the signal asserted on the pixel during a plurality of the time intervals such that the intensity value is displayed by the pixel. Note that n is an integer greater than zero. The method can be applied to all rows, which can be driven asynchronously. A display driver for performing the novel methods is also disclosed. The present invention facilitates driving the display at 100% bandwidth efficiency during each time interval in the modulation period.

US Patent:

8237756, Aug 7, 2012

Filed:

Jan 28, 2008

Appl. No.:

12/011520

Inventors:

Kin Yip Kenneth Kwan - San Jose CA, US
Andrea Nguyen - San Jose CA, US
Sunny Yat-san Ng - Cupertino CA, US
William K. Zuravleff - Mountain View CA, US

Assignee:

OmniVision Technologies, Inc. - Santa Clara CA

International Classification:

G09G 5/02

US Classification:

345693

Abstract:

A novel method for driving a display having an array of pixels arranged in a plurality of columns and a plurality of rows includes the steps of defining a modulation period for a row of pixels, dividing the modulation period into a number of coequal time intervals equal to n times the number of rows in the array, receiving a multi-bit data word that indicates an intensity value, and updating the signal asserted on the pixel during a plurality of the time intervals such that the intensity value is displayed by the pixel. Note that n is an integer greater than zero. The method can be applied to all rows, which can be driven asynchronously. A display driver for performing the novel methods is also disclosed. The present invention facilitates driving the display at 100% bandwidth efficiency during each time interval in the modulation period.

US Patent:

61758515, Jan 16, 2001

Filed:

Feb 6, 1998

Appl. No.:

9/020152

Inventors:

Konstantine I. Iourcha - San Jose CA
Andrea Nguyen - Cupertino CA
Daniel Hung - Santa Clara CA

Assignee:

S3 Incorporated - Santa Clara CA

International Classification:

G06F 738

US Classification:

708505

Abstract:

A system for adding or subtracting numbers in signed floating point notation performs exponent and mantissa handling operations in parallel. The system includes a comparator, for determining a greater-magnitude and a lesser magnitude floating point number, operating in parallel with a selector for performing a one's complement and single-bit shift on a mantissa portion of the lesser-magnitude floating point number. The system further includes a remaining shift circuit, for determining an additional amount by which the lesser-magnitude mantissa portion should be shifted; and a shifter. The system also includes an absolute add circuit, for determining whether an absolute addition or an absolute subtraction is to be performed, and a single-bit shift circuit, for indicating whether a shift of at least one bit is required.

US Patent:

54187559, May 23, 1995

Filed:

Aug 12, 1994

Appl. No.:

8/290671

Inventors:

Andrea Nguyen - Cupertino CA
Joe Yeun - South San Francisco CA
Charles Stearns - San Jose CA

Assignee:

Vertex Semiconductor Corporation - San Jose CA

International Classification:

G11C 800

US Classification:

36523008

Abstract:

A write buffer having selective flush is disclosed. The write buffer has address buffers and associated data buffers and comparators. During a "sneak read" operation, the address of the read operation is compared to the address signals stored in each of the address buffers. If a match is found, the read operation is temporarily suspended for only as long as the matched address remains stored in the write buffer. In a further improvement, the overhead associated with each match can be minimized to one write operation for each match before the matched address and data signals are written out of the write buffer.