Patents by Inventor Jongseung Park

Jongseung Park 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: 10152999
    Abstract: A data processing system is disclosed including a data detector, a data decoder and an alignment detector. The data detector is operable to apply a data detection algorithm to generate detected values for a data sector. The data decoder is operable to apply a data decode algorithm to a decoder input derived from the detected values to yield decoded values. The alignment detector is operable to calculate an offset between multiple versions of the data sector by correlating the multiple versions.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: December 11, 2018
    Assignee: Avago Technologies International Sales Pte. Limited
    Inventors: Shaohua Yang, George Mathew, Jefferson E. Singleton, Jongseung Park, Richard Rauschmayer
  • Patent number: 9786316
    Abstract: An apparatus for two-dimensional magnetic recording includes an array reader comprising a number of read sensors configured to read data from at least one track on a storage medium, a number of two-dimensional equalizer circuits each comprising inputs for receiving signals derived from each of the read sensors, each comprising an equalized output, and a number of iterative inter-track interference cancellation circuits, each operable to cancel inter-track interference in a different one of the equalized outputs from the two-dimensional equalizer circuits.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: October 10, 2017
    Assignee: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.
    Inventors: George Mathew, Jongseung Park, Richard Rauschmayer, Bruce A. Wilson
  • Publication number: 20170162224
    Abstract: An apparatus for two-dimensional magnetic recording includes an array reader comprising a number of read sensors configured to read data from at least one track on a storage medium, a number of two-dimensional equalizer circuits each comprising inputs for receiving signals derived from each of the read sensors, each comprising an equalized output, and a number of iterative inter-track interference cancellation circuits, each operable to cancel inter-track interference in a different one of the equalized outputs from the two-dimensional equalizer circuits.
    Type: Application
    Filed: December 2, 2015
    Publication date: June 8, 2017
    Inventors: George Mathew, Jongseung Park, Richard Rauschmayer, Bruce A. Wilson
  • Patent number: 9570105
    Abstract: Systems and methods are disclosed for data processing, and more particularly for equalizing a data signal during both real time (i.e., on the fly) and retry operation. The system may include a first equalizer circuit operable to equalize a first sample set, and a second equalizer circuit operable to equalize a second sample set. The system may include a third equalizer circuit operable to equalize a summed data set to yield a third equalized output. The system may include a summation circuit connected to the first equalizer circuit, the second equalizer circuit, and a switch circuit. The summation circuit is operable to sum at least the first equalized data set and the second equalized data set to yield the summed data set. The switch circuit selectively provides the third equalized data set to the summation circuit.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: February 14, 2017
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: George Mathew, Jongseung Park, Han Fang, Richard Rauschmayer
  • Patent number: 9524748
    Abstract: Embodiments are related to systems and methods for data processing, and more particularly to systems and methods for multi-dimensional signal equalization. In one case, a data processing system is discussed that includes: a first equalizer governed at least in part by a first coefficient; a second equalizer circuit governed at least in part by a second coefficient; and a constraint circuit operable to force a sum of at least the first coefficient and the second coefficient to equal a defined value.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: December 20, 2016
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Jongseung Park, George Mathew
  • Patent number: 9382114
    Abstract: The present invention provides a heat exchange type prereformer comprising a shell side having a channel to which cathode exhaust gas is supplied and through which cathode exhaust gas flows so that heat can be exchanged between the cathode exhaust gas and the mixture gas supplied for preforming; a catalyst layer arranged so as to overlap one area of the shell side and formed to cause the mixture gas to have a prereforming reaction; and a tube side connected to the catalyst layer and arranged so as to overlap the other area of the shell side and formed to cause the prereformed mixture gas to exchange heat with the cathode exhaust gas.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: July 5, 2016
    Assignee: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
    Inventors: Choamun Yun, Jongseung Park, Taehee Kim, Gipung Lee, Taewon Lee
  • Publication number: 20160163352
    Abstract: Embodiments are related to systems and methods for data processing, and more particularly to systems and methods for multi-dimensional signal equalization. In one case, a data processing system is discussed that includes: a first equalizer governed at least in part by a first coefficient; a second equalizer circuit governed at least in part by a second coefficient; and a constraint circuit operable to force a sum of at least the first coefficient and the second coefficient to equal a defined value.
    Type: Application
    Filed: December 8, 2014
    Publication date: June 9, 2016
    Inventors: Jongseung Park, George Mathew
  • Patent number: 9245559
    Abstract: A method of mitigating an effect of track misregistration on read performance in a system comprising an array-reader includes determining an estimated off-track condition, selecting translation coefficients based on the estimated off-track condition, determining updated equalizer coefficients by applying the translation coefficients to native equalizer coefficients, and applying the updated equalizer coefficients to signals received from the array-reader to output a read signal.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: January 26, 2016
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: George Mathew, Jongseung Park, Eui Seok Hwang
  • Publication number: 20150255101
    Abstract: A method of mitigating an effect of track misregistration on read performance in a system comprising an array-reader includes determining an estimated off-track condition, selecting translation coefficients based on the estimated off-track condition, determining updated equalizer coefficients by applying the translation coefficients to native equalizer coefficients, and applying the updated equalizer coefficients to signals received from the array-reader to output a read signal.
    Type: Application
    Filed: April 28, 2014
    Publication date: September 10, 2015
    Applicant: LSI Corporation
    Inventors: George Mathew, Jongseung Park, Eui Seok Hwang
  • Patent number: 9129648
    Abstract: An apparatus for reading data includes an array of analog inputs operable to receive analog signals retrieved from a magnetic storage medium, wherein the analog inputs correspond to multiple data tracks on the magnetic storage medium, and wherein the number of analog inputs in the array of analog inputs is greater than the number of data tracks being read, at least one joint equalizer operable to filter the analog inputs to yield an equalized output for each of the data tracks being read, and at least one data detector operable to apply a detection algorithm to the equalized output from the joint equalizer to yield detected values for each of the data tracks being read.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: September 8, 2015
    Assignee: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.
    Inventors: George Mathew, Bruce A. Wilson, Jongseung Park
  • Publication number: 20150199991
    Abstract: An apparatus for reading data includes an array of analog inputs operable to receive analog signals retrieved from a magnetic storage medium, wherein the analog inputs correspond to multiple data tracks on the magnetic storage medium, and wherein the number of analog inputs in the array of analog inputs is greater than the number of data tracks being read, at least one joint equalizer operable to filter the analog inputs to yield an equalized output for each of the data tracks being read, and at least one data detector operable to apply a detection algorithm to the equalized output from the joint equalizer to yield detected values for each of the data tracks being read.
    Type: Application
    Filed: January 17, 2014
    Publication date: July 16, 2015
    Applicant: LSI Corporation
    Inventors: George Mathew, Bruce A. Wilson, Jongseung Park
  • Publication number: 20150170676
    Abstract: A method of reading data in a multi-reader two-dimensional magnetic recording system includes determining a position of a multi-reader head, selecting a mode for reading the data of a magnetic recording medium as a function of the position of the multi-reader head, and reading the data of the magnetic recording medium in the selected mode.
    Type: Application
    Filed: February 4, 2014
    Publication date: June 18, 2015
    Applicant: LSI Corporation
    Inventors: Eui Seok Hwang, George Mathew, Jongseung Park
  • Patent number: 8970976
    Abstract: Systems, methods, devices, circuits for data processing, and more particularly to systems and methods for reducing inter-track interference in relation to processing data retrieved from a storage medium.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: March 3, 2015
    Assignee: LSI Corporation
    Inventors: Eui Seok Hwang, Jongseung Park, Ivana Djurdjevic, Richard Rauschmayer
  • Publication number: 20150015984
    Abstract: Described embodiments provide a method of cancelling inter-track interference (ITI) from one or more sectors read from a desired track of a storage medium. A read channel reads sectors in a desired track of the storage medium. A decoder of the read channel decodes the read sectors, and if the read sectors are incorrectly recovered from the storage medium, selected sectors of a first adjacent track and a second adjacent track are read. An ITI canceller of the read channel estimates ITI in the read sectors of the desired track corresponding to the selected sectors of each adjacent track and subtracts the estimated ITI of each adjacent track from the data for the sectors of the desired track, providing updated sector data. The ITI cancelled data is replayed to the decoder, Which decodes the ITT cancelled data and provides the decoded ITI cancelled data as output of the read channel.
    Type: Application
    Filed: September 29, 2014
    Publication date: January 15, 2015
    Applicant: LSI Corporation
    Inventors: Ming Jin, Erich F. Haratsch, George Mathew, Jongseung Park, Timothy W. Swatosh, Timothy B. Lund, Carl E. Forham
  • Publication number: 20150012800
    Abstract: A data processing system is disclosed including a data detector, a data decoder and an alignment detector. The data detector is operable to apply a data detection algorithm to generate detected values for a data sector. The data decoder is operable to apply a data decode algorithm to a decoder input derived from the detected values to yield decoded values. The alignment detector is operable to calculate an offset between multiple versions of the data sector by correlating the multiple versions.
    Type: Application
    Filed: July 26, 2013
    Publication date: January 8, 2015
    Applicant: LSI Corporation
    Inventors: Shaohua Yang, George Mathew, Jefferson E. Singleton, Jongseung Park, Richard Rauschmayer
  • Publication number: 20140369900
    Abstract: The present invention provides a heat exchange type prereformer comprising a shell side having a channel to which cathode exhaust gas is supplied and through which cathode exhaust gas flows so that heat can be exchanged between the cathode exhaust gas and the mixture gas supplied for preforming; a catalyst layer arranged so as to overlap one area of the shell side and formed to cause the mixture gas to have a prereforming reaction; and a tube side connected to the catalyst layer and arranged so as to overlap the other area of the shell side and formed to cause the prereformed mixture gas to exchange heat with the cathode exhaust gas.
    Type: Application
    Filed: December 28, 2012
    Publication date: December 18, 2014
    Applicant: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
    Inventors: Choamun Yun, Jongseung Park, Taehee Kim, Gipung Lee, Taewon Lee
  • Patent number: 8902524
    Abstract: Hardware-based methods and apparatus are provided for inter-track interference mitigation in magnetic recording systems using averaged values. Inter-track interference (ITI) is mitigated in a magnetic recording system by obtaining ITI cancellation data; and providing the ITI cancellation data for ITI mitigation, wherein the ITI mitigation is performed in combination with an averaging procedure for one or more of ITI mitigation of averaged data and averaging of ITI mitigated data. The sector is optionally decoded using the ITI mitigated samples. Samples for one or more side track sectors can also be averaged. The averaged side track samples can be provided as ITI cancellation data for ITI mitigation. The averaging procedure optionally applies a scaling factor to each read value.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 2, 2014
    Assignee: LSI Corporation
    Inventors: Erich F. Haratsch, Ming Jin, George Mathew, Jongseung Park, Kurt J. Worrell
  • Patent number: 8879182
    Abstract: Described embodiments provide a method of cancelling inter-track interference (ITI) from one or more sectors read from a desired track of a storage medium. A road channel reads sectors in a desired track of the storage medium. A decoder of the read channel decodes the read sectors, and if the read sectors are incorrectly recovered from the storage medium, selected sectors of a first adjacent track and a second adjacent track are read. An ITI canceller of the read channel estimates ITI in the read sectors of the desired track corresponding to the selected sectors of each adjacent track and subtracts the estimated ITI of each adjacent track from the data for the sectors of the desired track, providing updated sector data. The ITI cancelled data is replayed to the decoder, which decodes the ITI cancelled data and provides the decoded ITI cancelled data as output of the read channel.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: November 4, 2014
    Assignee: LSI Corporation
    Inventors: Erich Franz Haratsch, George Mathew, Ming Jin, Jongseung Park, Timothy W. Swatosh, Timothy B. Lund, Carl E. Forhan
  • Patent number: 8861113
    Abstract: Systems, methods, devices, circuits for data processing, and more particularly to systems and methods for adapting noise predictive filters for inter-track interference cancellation in a data processing system.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: October 14, 2014
    Assignee: LSI Corporation
    Inventors: Jun Xiao, Jongseung Park, Fan Zhang, Ivana Djurdjevic
  • Patent number: 8854757
    Abstract: Systems and methods for data processing, and more particularly to estimating or calculating interference between tracks on a storage medium.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: October 7, 2014
    Assignee: LSI Corporation
    Inventors: George Mathew, Jongseung Park, Erich F. Haratsch, Bruce A. Wilson