Patents by Inventor Colm P Lysaght

Colm P Lysaght has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6895490
    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.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: May 17, 2005
    Assignee: Matrix Semiconductor, Inc.
    Inventors: Christopher S. Moore, Richard Matt Fruin, Colm P Lysaght, Roy E. Scheuerlein
  • Patent number: 6765813
    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.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: July 20, 2004
    Assignee: Matrix Semiconductor, Inc.
    Inventors: Roy E. Scheuerlein, J. James Tringali, Colm P. Lysaght, Alper Ilkbahar, Christopher S. Moore, David R. Friedman
  • Publication number: 20020163834
    Abstract: The preferred embodiments described herein relate to a monolithic integrated circuit comprising a three-dimensional memory array having a plurality of layers of memory cells stacked vertically above one another and above the substrate of the integrated circuit. Support circuitry for the three-dimensional memory array is formed in the 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.
    Type: Application
    Filed: June 27, 2002
    Publication date: November 7, 2002
    Inventors: Roy E. Scheuerlein, J. James Tringali, Colm P. Lysaght, Alper Ilkbahar, Christopher S. Moore, David R. Friedman
  • Patent number: 6266000
    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.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: July 24, 2001
    Assignee: Agilent Technologies, Inc.
    Inventors: Gani Jusuf, Colm P. Lysaght, Ryan P. Donohue