Inventor · disambiguated record
Spencer W. Ng
Also filed as: NG SPENCER · NG SPENCER W · NG SPENCER W-F · NG SPENCER WAH-FUNG
28 granted patents·1,264 citations·filing 1990–2009
98Inventor score
Files withIBM16HITACHI GLOBAL STORAGE TECH7HITACHI GLOBAL STORAGE TECH NL3CHU FRANK R1HITACHI GLOBAL TECHNOLOGIES1
Top patents by PatentIndex Score
28 records- 0196US7411757B2Disk drive with nonvolatile memory having multiple modes of operationHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Aug 12, 2008·73 cites·17 claims
- 0293US7318118B2System and method for selective write to flash memory in HDDHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Jan 8, 2008·38 cites·19 claims
- 0392US7137038B2System and method for autonomous data scrubbing in a hard disk driveHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Nov 14, 2006·38 cites·23 claims
- 0492US5278838ARecovery from errors in a redundant array of disk drivesIBM·Filed 1991·Granted Jan 11, 1994·170 cites·16 claims
- 0591US7472222B2HDD having both DRAM and flash memoryHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Dec 30, 2008·46 cites·18 claims
- 0691US5258984AMethod and means for distributed sparing in DASD arraysIBM·Filed 1991·Granted Nov 2, 1993·166 cites·24 claims
- 0789US8024515B2Non-volatile cache in disk drive emulationHITACHI GLOBAL STORAGE TECH NL·Filed 2007·Granted Sep 20, 2011·26 cites·17 claims
- 0886US8015433B2Disk drive with nonvolatile memory for storage of failure-related dataHITACHI GLOBAL STORAGE TECH NL·Filed 2006·Granted Sep 6, 2011·17 cites·5 claims
- 0986US7085953B1Method and means for tolerating multiple dependent or arbitrary double disk failures in a disk arrayIBM·Filed 2002·Granted Aug 1, 2006·45 cites·22 claims
- 1086US5265098AMethod and means for managing DASD array accesses when operating in degraded modeIBM·Filed 1990·Granted Nov 23, 1993·138 cites·8 claims
- 1185US5623608AMethod and apparatus for adaptive circular predictive buffer managementIBM·Filed 1994·Granted Apr 22, 1997·110 cites·19 claims
- 1282US7080200B2System and method for handling writes in HDD using 4K block sizesHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Jul 18, 2006·36 cites·10 claims
- 1378US5412661ATwo-dimensional disk arrayIBM·Filed 1992·Granted May 2, 1995·78 cites·11 claims
- 1473USRE36846ERecovery from errors in a redundant array of disk drivesIBM·Filed 1996·Granted Aug 29, 2000·59 cites·8 claims
- 1573US5991825ASystem for handling missed revolution in a disk drive by aborting the execution of primary command and executing secondary command if a missed revolution occursIBM·Filed 1997·Granted Nov 23, 1999·65 cites·20 claims
- 1672US6029230AData storage library with media destaging and prestaging for improved response timeIBM·Filed 1996·Granted Feb 22, 2000·24 cites·16 claims
- 1771US8850128B2Implementing data storage and dual port, dual-element storage deviceCHU FRANK R·Filed 2009·Granted Sep 30, 2014·7 cites·26 claims
- 1870US6658535B1Non-interfering seek behavior modification for improved hard drive performanceIBM·Filed 2000·Granted Dec 2, 2003·17 cites·17 claims
- 1969US8014095B2Mixed format disk driveHITACHI GLOBAL STORAGE TECH NL·Filed 2007·Granted Sep 6, 2011·1 cites·19 claims
- 2067US6928515B2Integrated sector format-error correction code system and method for efficient writing in a disk array systemIBM·Filed 2002·Granted Aug 9, 2005·12 cites·42 claims
- 2160US7062673B2System and method for sparing in RAID-1 systemHITACHI GLOBAL TECHNOLOGIES·Filed 2003·Granted Jun 13, 2006·7 cites·17 claims
- 2259US5341351AMethod and means for optimally accessing data residing on dual actuator DASDsIBM·Filed 1992·Granted Aug 23, 1994·33 cites·10 claims
- 2356US5566317AMethod and apparatus for computer disk drive managementIBM·Filed 1994·Granted Oct 15, 1996·26 cites·13 claims
- 2452US7545596B2System and method for WORM magnetic recordingHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Jun 9, 2009·0 cites·15 claims
- 2542US6253279B1Method and system for determining the data layout geometry of a disk driveIBM·Filed 1998·Granted Jun 26, 2001·5 cites·36 claims
- 2640US6237070B1Method and system for determining the data layout geometry of a disk driveIBM·Filed 1998·Granted May 22, 2001·4 cites·36 claims
- 2738US6684287B1Turning read/write performance for disk drives with very high track densityHITACHI GLOBAL STORAGE TECH·Filed 1999·Granted Jan 27, 2004·14 cites·7 claims
- 2837US5765189AMethod and apparatus for computer disk drive buffer managementIBM·Filed 1996·Granted Jun 9, 1998·9 cites·22 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →