Patents by Inventor Jeffrey Soon Beng Sim

Jeffrey Soon Beng Sim 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: 6990607
    Abstract: In one embodiment of the present invention, systems and methods are provided through which the capacity of a defect buffer in a microcontroller of a mass storage device is determined without regard for the quantity of defects on a recording medium. The capacity of the defect buffer is determined in varying examples, based on the amount of available buffer space and/or the application of the storage device. In one embodiment, the capacity of the defect buffer is less than the quantity of defects on the recording medium, wherein entries in a defect table on the recording medium are swapped in and out of the defect buffer as needed, such as using a most-recently-used scheme. In another embodiment of the present invention, systems and methods are provided through which the defect table is partitioned into a plurality of segments that are physically distributed throughout the recording medium.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: January 24, 2006
    Assignee: Seagate Technology LLC
    Inventors: Jeffrey Soon Beng Sim, WeiLoon Ng, Aik Chuan Lim, YongPeng Chng, Kay Hee Tang, Steven TianChye Cheok
  • Patent number: 6940671
    Abstract: Systems and methods are provided through which a time domain equalized signal-to-noise-ratio (ESNR) of an electronic device is determined by executing ESNR determining firmware in the electronic device. The ESNR is used to perform rejection/acceptance testing of the electronic device during manufacturing of the device, and/or to perform read channel tuning and optimization. In one embodiment, determination of the ESNR includes both phase level retry and global level retry.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: September 6, 2005
    Assignee: Seagate Technology LLC
    Inventors: Edmun ChianSong Seng, AikChuan Lim, Kay Hee Tang, UttHeng Kan, Jeffrey Soon Beng Sim
  • Publication number: 20020128787
    Abstract: Systems and methods are provided through which a time domain equalized signal-to-noise-ratio (ESNR) of an electronic device is determined by executing ESNR determining firmware in the electronic device. The ESNR is used to perform rejection/acceptance testing of the electronic device during manufacturing of the device, and/or to perform read channel tuning and optimization. In one embodiment, determination of the ESNR includes both phase level retry and global level retry.
    Type: Application
    Filed: September 26, 2001
    Publication date: September 12, 2002
    Inventors: Edmun ChianSong Seng, AikChuan Lim, Kay Hee Tang, UttHeng Kan, Jeffrey Soon Beng Sim
  • Publication number: 20020108072
    Abstract: In one embodiment of the present invention, systems and methods are provided through which the capacity of a defect buffer in a microcontroller of a mass storage device is determined without regard for the quantity of defects on a recording medium. The capacity of the defect buffer is determined in varying examples, based on the amount of available buffer space and/or the application of the storage device. In one embodiment, the capacity of the defect buffer is less than the quantity of defects on the recording medium, wherein entries in a defect table on the recording medium are swapped in and out of the defect buffer as needed, such as using a most-recently-used scheme. In another embodiment of the present invention, systems and methods are provided through which the defect table is partitioned into a plurality of segments that are physically distributed throughout the recording medium.
    Type: Application
    Filed: September 27, 2001
    Publication date: August 8, 2002
    Inventors: Jeffrey Soon Beng Sim, WeiLoon Ng, Aik Chuan Lim, YongPeng Chng, Kay Hee Tang, Steven TianChye Cheok