Patents by Inventor Terrence L. Wong

Terrence L. Wong 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: 8151121
    Abstract: Securely storing data to an optical disc has been described, including generating write data that includes the data and overhead data that facilitates reading the data from the disc; and configuring the overhead data according to a key.
    Type: Grant
    Filed: March 11, 2003
    Date of Patent: April 3, 2012
    Assignee: LSI Corporation
    Inventors: Terrence L. Wong, Ian E. Harvey, David C. Lee, Greg S. Lewis, Steven R. Spielman, Christopher C. Tan, David K. Warland
  • Patent number: 7149178
    Abstract: A system and method for reading and writing in a multilevel optical data system is disclosed. The system provides control signals for timing acquisition, level calibration, DC control, AGC, equalizer training and data synchronization. The user data is ECC protected and optionally convolutionally encoded before being combined with the control signals in an information block. The multilevel information block can be written to an optical disc as a series of multilevel marks. The optical disc may also contain an Address in Pregroove signal (AIP) to facilitate synchronization during writing of an information block. The AIP signal has an integer number of address frames per information block.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: December 12, 2006
    Assignee: LSI Logic Corporation
    Inventors: Terrence L. Wong, Gregory S. Lewis, David C. Lee, Yi Ling, Stephen P. Pope, Steven R. Spielman, Jonathan A. Zingman
  • Patent number: 7136333
    Abstract: A system and method are disclosed for reading a multilevel signal from an optical disc. The method includes reading a raw analog data signal from a disc using an optical detector and adjusting the amplitude of the raw analog data signal. A timing signal is recovered from the amplitude adjusted analog data signal and correction is made for amplitude modulation of the raw analog data signal by processing the raw analog data signal and the timing signal.
    Type: Grant
    Filed: February 2, 2004
    Date of Patent: November 14, 2006
    Assignee: LSI Logic Corporation
    Inventors: Terrence L. Wong, John L. Fan, David C. Lee, Yi Ling, Yung-Cheng Lo, Steven E. McLaughlin, Laura L. McPheters, Richard L. Martin, Judith C. Powelson, Steven R. Spielman, David K. Warland, Jonathan A. Zingman
  • Publication number: 20040233815
    Abstract: A system and method for reading and writing in a multilevel optical data system is disclosed. The system provides control signals for timing acquisition, level calibration, DC control, AGC, equalizer training and data synchronization. The user data is ECC protected and optionally convolutionally encoded before being combined with the control signals in an information block. The multilevel information block can be written to an optical disc as a series of multilevel marks. The optical disc may also contain an Address in Pregroove signal (AIP) to facilitate synchronization during writing of an information block. The AIP signal has an integer number of address frames per information block.
    Type: Application
    Filed: June 25, 2004
    Publication date: November 25, 2004
    Inventors: Terrence L. Wong, Gregory S. Lewis, David C. Lee, Yi Ling, Stephen P. Pope, Steven R. Spielman, Jonathan A. Zingman
  • Publication number: 20040156284
    Abstract: A system and method are disclosed for reading a multilevel signal from an optical disc. The method includes reading a raw analog data signal from a disc using an optical detector and adjusting the amplitude of the raw analog data signal. A timing signal is recovered from the amplitude adjusted analog data signal and correction is made for amplitude modulation of the raw analog data signal by processing the raw analog data signal and the timing signal.
    Type: Application
    Filed: February 2, 2004
    Publication date: August 12, 2004
    Inventors: Terrence L. Wong, John L. Fan, David C. Lee, Yi Ling, Yung-Cheng Lo, Steven E. McLaughlin, Laura L. McPheters, Richard L. Martin, Judith C. Powelson, Steven R. Spielman, David K. Warland, Jonathan A. Zingman
  • Patent number: 6775218
    Abstract: A system and method are disclosed for recording information on a phase change medium is disclosed. The method includes irradiating a region of the phase change medium with a first dose of laser energy. A first portion of the region is irradiated with a second dose of laser energy in a manner that causes the first portion of the region irradiated with the second dose of laser energy to be in a different state than a second portion of the region that is not irradiated by the second dose of laser energy.
    Type: Grant
    Filed: August 12, 1999
    Date of Patent: August 10, 2004
    Assignee: LSI Logic Corporation
    Inventors: Michael P. O'Neill, Terrence L. Wong, David K. Warland, Kunjithapatham Balasubramanian, Matthew C. Bashaw, Timothy Learmonth, Gregory A. McDermott, Raghuram Narayan, Judith C. Powelson, Ting Zhou
  • Patent number: 6771570
    Abstract: A system and method for reading and writing in a multilevel optical data system is disclosed. The system provides control signals for timing acquisition, level calibration, DC control, AGC, equalizer training and data synchronization. The user data is ECC protected and optionally convolutionally encoded before being combined with the control signals in an information block. The multilevel information block can be written to an optical disc as a series of multilevel marks. The optical disc may also contain an Address in Pregroove signal (AIP) to facilitate synchronization during writing of an information block. The AIP signal has an integer number of address frames per information block.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: August 3, 2004
    Assignee: LSI Logic Corporation
    Inventors: Terrence L. Wong, Gregory S. Lewis, David C. Lee, Yi Ling, Stephen P. Pope, Steven R. Spielman, Jonathan A. Zingman
  • Patent number: 6657933
    Abstract: A system and method are disclosed for reading a multilevel signal from an optical disc. The method includes reading a raw analog data signal from a disc using an optical detector and adjusting the amplitude of the raw analog data signal. A timing signal is recovered from the amplitude adjusted analog data signal and correction is made for amplitude modulation of the raw analog data signal by processing the raw analog data signal and the timing signal.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: December 2, 2003
    Assignee: Calimetrics, Inc.
    Inventors: Terrence L. Wong, John L. Fan, David C. Lee, Yi Ling, Yung-Cheng Lo, Steven W. McLaughlin, Laura L. McPheters, Richard L. Martin, Judith C. Powelson, Steven R. Spielman, David K. Warland, Jonathan A. Zingman
  • Patent number: 6381724
    Abstract: A system and method are disclosed for modulation encoding data for storage or transmission on a multilevel medium. The method includes encoding a first portion of data using a first tier modulation code. The first tier modulation code maps a first portion of the data onto a first set of symbols. A second portion of data is encoded using a second tier modulation code. The second tier modulation maps the second portion of the data onto a second set of symbols. The second tier modulation code has error correcting characteristics. A third set of symbols is determined based on the first set of symbols and the second set of symbols. The third set of symbols is suitable to determine nominal read signal levels from a multilevel medium. Improved error characteristics are realized for encoding data for storage or transmission on a multilevel medium.
    Type: Grant
    Filed: August 22, 2000
    Date of Patent: April 30, 2002
    Assignee: Calimetrics, Inc.
    Inventors: Lloyd R. Welch, Terrence L. Wong, Steve W. McLaughlin
  • Publication number: 20020034138
    Abstract: A system and method are disclosed for reading a multilevel signal from an optical disc. The method includes reading a raw analog data signal from a disc using an optical detector and adjusting the amplitude of the raw analog data signal. A timing signal is recovered from the amplitude adjusted analog data signal and correction is made for amplitude modulation of the raw analog data signal by processing the raw analog data signal and the timing signal.
    Type: Application
    Filed: July 19, 2001
    Publication date: March 21, 2002
    Inventors: Terrence L. Wong, John L. Fan, David C. Lee, Yi Ling, Yung-Cheng Lo, Steven W. McLaughlin, Laura L. Mcpheters, Richard L. Martin, Judith C. Powelson, Steven R. Spielman, David K. Warland, Jonathan A. Zingman
  • Patent number: 6275458
    Abstract: A system and method are disclosed for reading a multilevel signal from an optical disc. The method includes reading a raw analog data signal from a disc using an optical detector and adjusting the amplitude of the raw analog data signal. A timing signal is recovered from the amplitude adjusted analog data signal and correction is made for amplitude modulation of the raw analog data signal by processing the raw analog data signal and the timing signal.
    Type: Grant
    Filed: February 18, 1999
    Date of Patent: August 14, 2001
    Inventors: Terrence L. Wong, David C. Lee, Richard L. Martin, Steven R. Spielman
  • Patent number: 6148428
    Abstract: A system and method are disclosed for modulation encoding data for storage or transmission on a multilevel medium. The method includes encoding a first portion of data using a first tier modulation code. The first tier modulation code maps a first portion of the data onto a first set of symbols. A second portion of data is encoded using a second tier modulation code. The second tier modulation maps the second portion of the data onto a second set of symbols. The second tier modulation code has error correcting characteristics. A third set of symbols is determined based on the first set of symbols and the second set of symbols. The third set of symbols is suitable to determine nominal read signal levels from a multilevel medium. Improved error characteristics are realized for encoding data for storage or transmission on a multilevel medium.
    Type: Grant
    Filed: May 21, 1998
    Date of Patent: November 14, 2000
    Assignee: Calimetrics, Inc.
    Inventors: Lloyd R. Welch, Terrence L. Wong, Steve W. McLaughlin
  • Patent number: 5854779
    Abstract: The present invention is a system for reading a CD having a surface with a multiple level data track including a laser, a focusing and positioning system configured in a way which causes the laser to follow the multiple level data track, a detector which converts the light which is reflected from the data track to an electrical signal, a digital signal processing unit configured to receive the electrical signal including a scaling-function generator for determining a plurality of signal windows from the electrical signal, and a multiple level analog to digital converter which determines a data level based on the signal windows and the electrical signal whereby multiple data levels may be read from the CD.
    Type: Grant
    Filed: January 5, 1996
    Date of Patent: December 29, 1998
    Assignee: Calimetrics
    Inventors: Bruce V. Johnson, Gregory A. McDermott, Michael P. O'Neill, Cezary Pietrzyk, Steven Spielman, Terrence L. Wong
  • Patent number: 5818806
    Abstract: A system and method are disclosed for compensating for intersymbol interference on an optical disc. The method includes measuring an intersymbol linear transfer function. The intersymbol linear transfer function substantially describes a linear portion of the effect of intersymbol interference on an optically detected read signal from an optical disc. The intersymbol linear transfer function is convolved with a write signal to produce a linearly transformed portion of the optically detected read signal. An inverse linear transfer function of the intersymbol linear transfer function is determined. The inverse linear transfer function has the property of canceling the effect of convolving the intersymbol linear transfer function with the write signal. The optically detected read signal is convolved with the inverse linear transfer function.
    Type: Grant
    Filed: May 6, 1997
    Date of Patent: October 6, 1998
    Assignee: Calimetrics, Inc.
    Inventors: Terrence L. Wong, Steven R. Spielman