Colm P Lysaght

US Patent:

6633301, Oct 14, 2003

Filed:

May 17, 1999

Appl. No.:

09/313227

Inventors:

James M. Dallas - Superior CO
Ryan Patrick Donohue - Mountain View CA
Mark A. Handschy - Boulder CO
Gani Jusuf - San Carlos CA
Colm Lysaght - Palo Alto CA
Rainer Malzbender - Niwot CO

Assignee:

Displaytech, Inc. - Longmont CO

International Classification:

G09G 502

US Classification:

345597, 345 84

Abstract:

A display system includes a light modulator divided into an array of individually controllable pixels and an input-driven illumination device. The illumination device is adapted to receive a variable input and is configured to direct light of variable intensity onto the modulator, depending on the input. The display system further includes a calibrating arrangement for establishing the input to the illumination device to produce a desired intensity level of light. The calibrating arrangement includes a light sensing mechanism, which senses the light from the illumination device while the illumination device is driven by an initial input. The calibration arrangement is configured to determine a comparison between the sensed light and a value representative of the desired-intensity level. The calibration arrangement further includes a control arrangement responsive to the comparison for varying the input so as to provide light of the desired intensity level.

US Patent:

6765813, Jul 20, 2004

Filed:

Jun 27, 2002

Appl. No.:

10/185588

Inventors:

Roy E. Scheuerlein - Cupertino CA
J. James Tringali - Los Altos CA
Colm P. Lysaght - Palo Alto CA
Alper Ilkbahar - San Jose CA
Christopher S. Moore - San Jose CA
David R. Friedman - Menlo Park CA

Assignee:

Matrix Semiconductor, Inc. - Santa Clara CA

International Classification:

G11C 502

US Classification:

365 51, 365 52, 365 63

Abstract:

Support circuitry for a three-dimensional memory array is formed in a substrate at least partially under the three-dimensional memory array and defines open area in the substrate under the three-dimensional memory array. In one preferred embodiment, one or more memory arrays are formed at least partially in the open area under the three-dimensional memory array, while in another preferred embodiment, logic circuitry implementing one or more functions is formed at least partially in the open area under the three-dimensional memory array. In yet another preferred embodiment, both one or more memory arrays and logic circuitry are formed at least partially in the open area under the three-dimensional memory array. Other preferred embodiments are provided, and each of the preferred embodiments can be used alone or in combination with one another.

US Patent:

6895490, May 17, 2005

Filed:

Dec 14, 2001

Appl. No.:

10/023468

Inventors:

Christopher S. Moore - San Jose CA, US
Richard Matt Fruin - San Jose CA, US
Colm P Lysaght - Palo Alto CA, US
Roy E. Scheuerlein - Cupertino CA, US

Assignee:

Matrix Semiconductor, Inc. - Santa Clara CA

International Classification:

G06F012/00

US Classification:

711203, 711202, 711207, 711221, 711156, 711103, 36523003

Abstract:

The preferred embodiments described herein provide a method for making a write-once memory device read compatible with a write-many file system. In one preferred embodiment, a method for re-writing to a logical address of a write-once memory device is provided. A physical-to-logical address map is built from data stored in the memory device that associates individual physical addresses with individual logical addresses. When a logical address is re-written, data associating that logical address with a new physical address is stored, and data associating that logical address with an old physical address is invalidated. When the logical address is read, the physical-to-logical address map is used to read the new physical address instead of the old physical address. Other preferred embodiments are provided, and each of the preferred embodiments described herein can be used alone or in combination with one another.

US Patent:

62660004, Jul 24, 2001

Filed:

Apr 30, 1999

Appl. No.:

9/303797

Inventors:

Gani Jusuf - San Carlos CA
Colm P. Lysaght - Palo Alto CA
Ryan P. Donohue - San Jose CA

Assignee:

Agilent Technologies, Inc. - Palo Alto CA

International Classification:

H03M 166

US Classification:

341144

Abstract:

A light emitting diode (LED) driver pad comprising a multiplying digital to analog converter (MDAC), which allows for differing LED characteristics to be matched digitally. Either a plurality of MDACs are integrated onto a single integrated circuit, one MDAC per color of LED, or a single MDAC may be multiplexed to drive a plurality of different color LEDs. The MDAC allows for LED operating current to be set digitally, while allowing an overall brightness or intensity control, thus achieving uniform color balance over a range of operating characteristics.