Patents by Inventor Han H. Chau

Han H. Chau 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).

  • Systems and methods for fast state modification of at least a portion of non-volatile memory
    Patent number: 8347029
    Abstract: A method is provided for reducing the number of writes in a non-volatile memory (122). The method involves writing data in the non-volatile memory and determining a set of data from the data in the non-volatile memory to be written to a removable memory (126) that is operatively coupled to the non-volatile memory (e.g., a NAND memory). The method also involves writing the set of data to the removable memory (e.g., a hard disk) from the non-volatile memory. The method further involves writing a delineation marker (e.g., a sequence number) to the non-volatile memory specifying that the set of data has been written to the removable memory. Notably, the metadata of the data in the non-volatile memory comprises at least one marker set as a specific marker type (e.g., a valid marker and a dirty marker).
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: January 1, 2013
    Assignee: Intel Corporation
    Inventors: Sanjeev N. Trika, Debra Hensgen, Han H. Chau, Michael Johnston
  • Wrap-around sequence numbers for recovering from power-fall in non-volatile memory
    Patent number: 8171205
    Abstract: Incrementing sequence numbers in the metadata of non-volatile memory is used in the event of a resume from power fail to determine which data in the memory is current and valid, and which data is not. To reduce the amount of metadata space consumed by these sequence numbers, the numbers are permitted to be small enough to wrap around when the maximum value is reached. Two different techniques are disclosed to keep this wrap around condition from causing ambiguity in the relative values of the sequence numbers.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: May 1, 2012
    Assignee: Intel Corporation
    Inventors: Robert Royer, Han H. Chau, Sanjeev N. Trika
  • Wrap-around sequence numbers for recovering from power-fall in non-volatile memory
    Publication number: 20090276586
    Abstract: Incrementing sequence numbers in the metadata of non-volatile memory is used in the event of a resume from power fail to determine which data in the memory is current and valid, and which data is not. To reduce the amount of metadata space consumed by these sequence numbers, the numbers are permitted to be small enough to wrap around when the maximum value is reached. Two different techniques are disclosed to keep this wrap around condition from causing ambiguity in the relative values of the sequence numbers.
    Type: Application
    Filed: May 5, 2008
    Publication date: November 5, 2009
    Inventors: Robert Royer, Han H. Chau, Sanjeev N. Trika
  • SYSTEMS AND METHODS FOR FAST STATE MODIFICATION OF AT LEAST A PORTION OF NON-VOLATILE MEMORY
    Publication number: 20090172280
    Abstract: A method is provided for reducing the number of writes in a non-volatile memory (122). The method involves writing data in the non-volatile memory and determining a set of data from the data in the non-volatile memory to be written to a removable memory (126) that is operatively coupled to the non-volatile memory (e.g., a NAND memory). The method also involves writing the set of data to the removable memory (e.g., a hard disk) from the non-volatile memory. The method further involves writing a delineation marker (e.g., a sequence number) to the non-volatile memory specifying that the set of data has been written to the removable memory. Notably, the metadata of the data in the non-volatile memory comprises at least one marker set as a specific marker type (e.g., a valid marker and a dirty marker).
    Type: Application
    Filed: December 28, 2007
    Publication date: July 2, 2009
    Applicant: Intel Corporation
    Inventors: Sanjeev N. Trika, Debra Hensgen, Han H. Chau, Michael Johnston