Patents by Inventor Alexander V. Kuznetsov

Alexander V. Kuznetsov 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).

  • System for precoding parity bits to meet predetermined modulation constraints
    Patent number: 8037398
    Abstract: A system includes an encoder that manipulates postcoded data and produces parity bits, and a parity bit encoder that produces encoded parity bits by inserting into the parity bits one or more flags with polarities, or states, that are selected to produce, after precoding, precoded parity bits that meet predetermined modulation constraints.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: October 11, 2011
    Assignee: Seagate Technology
    Inventors: Cenk Argon, Kinhing P. Tsang, Alexander V. Kuznetsov
  • Coding technique for correcting media defect-related errors and random errors
    Patent number: 8035909
    Abstract: A method of writing data on a storage medium that takes into account a condition of the storage medium. The method includes receiving data to be written on a portion of a storage medium and encoding the data based on a condition of the portion of the storage medium. The encoded data is written on the portion of the storage medium. A data storage system that includes a storage medium having defects is also provided. The data storage system utilizes a coding scheme that comprises coding bit patterns configured to address the defects on the storage medium.
    Type: Grant
    Filed: June 11, 2008
    Date of Patent: October 11, 2011
    Assignee: Seagate Technology LLC
    Inventor: Alexander V. Kuznetsov
  • Iterative read channel architectures with coded modulation
    Patent number: 7827464
    Abstract: Iterative decoding channel architectures employing coded modulation are provided. The coded modulation is realized via set partitioning for Partial Response (PR) channels along with multi-level coding. Associated error correction encoding and decoding methods, with additional compatibility considerations for channel constrained coding, are also provided.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: November 2, 2010
    Assignee: Seagate Technology LLC
    Inventors: Alexander V. Kuznetsov, Xueshi Yang
  • CODING TECHNIQUE FOR CORRECTING MEDIA DEFECT-RELATED ERRORS AND RANDOM ERRORS
    Publication number: 20090310240
    Abstract: A method of writing data on a storage medium that takes into account a condition of the storage medium. The method includes receiving data to be written on a portion of a storage medium and encoding the data based on a condition of the portion of the storage medium. The encoded data is written on the portion of the storage medium. A data storage system that includes a storage medium having defects is also provided. The data storage system utilizes a coding scheme that comprises coding bit patterns configured to address the defects on the storage medium.
    Type: Application
    Filed: June 11, 2008
    Publication date: December 17, 2009
    Applicant: Seagate Technology LLC
    Inventor: Alexander V. Kuznetsov
  • SYSTEM FOR PRECODING PARITY BITS TO MEET PREDETERMINED MODULATION CONSTRAINTS
    Publication number: 20090013240
    Abstract: A system includes an encoder that manipulates postcoded data and produces parity bits, and a parity bit encoder that produces encoded parity bits by inserting into the parity bits one or more flags with polarities, or states, that are selected to produce, after precoding, precoded parity bits that meet predetermined modulation constraints.
    Type: Application
    Filed: July 2, 2007
    Publication date: January 8, 2009
    Inventors: Cenk Argon, Kinhing P. Tsang, Alexander V. Kuznetsov
  • Iterative read channel architectures with coded modulation
    Publication number: 20080115036
    Abstract: Iterative decoding channel architectures employing coded modulation are provided. The coded modulation is realized via set partitioning for Partial Response (PR) channels along with multi-level coding. Associated error correction encoding and decoding methods, with additional compatibility considerations for channel constrained coding, are also provided.
    Type: Application
    Filed: November 15, 2006
    Publication date: May 15, 2008
    Applicant: Seagate Technology LLC
    Inventors: Alexander V. Kuznetsov, Xueshi Yang
  • Method and apparatus for additive trellis encoding
    Patent number: 7191386
    Abstract: A method of additive encoding of data words includes receiving a plurality of data words, and searching a trellis representation of additive code words to identify a path in the trellis representing a sequence of patterns to be used to encode the data words. The trellis representation is of all possible combinations of matching patterns in a sequence of additive code words. The trellis representation of the additive code words is searched to identify a sequence of flags representing the sequence of patterns to be used to encode the data words.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: March 13, 2007
    Assignee: Seagate Technology LLC
    Inventor: Alexander V. Kuznetsov