Inventor · disambiguated record
Joshua Ward Christensen
Also filed as: CHRISTENSEN JOSHUA · CHRISTENSEN JOSHUA W · CHRISTENSEN JOSHUA WARD
20 granted patents·72 citations·filing 2001–2024
93Inventor score
Technology areasG11B
Files withSEAGATE TECHNOLOGY LLC20
Top patents by PatentIndex Score
20 records- 0192US10147454B1Heat-assisted magnetic recording device capable of detecting degradation of NFT by measuring back-heat from mediumSEAGATE TECHNOLOGY LLC·Filed 2017·Granted Dec 4, 2018·12 cites·18 claims
- 0290US9070411B1Writable servo overlap zonesSEAGATE TECHNOLOGY LLC·Filed 2013·Granted Jun 30, 2015·18 cites·20 claims
- 0389US11164598B1Managing data associated with overwritten portions of previously-written tracksSEAGATE TECHNOLOGY LLC·Filed 2021·Granted Nov 2, 2021·3 cites·20 claims
- 0489US10366722B1Laser mode hop detection in a heat-assisted magnetic recording device using a slider sensor and laser modulationSEAGATE TECHNOLOGY LLC·Filed 2018·Granted Jul 30, 2019·10 cites·20 claims
- 0584US10438620B1Servo zone transition optimization for magnetic disk recording devicesSEAGATE TECHNOLOGY LLC·Filed 2018·Granted Oct 8, 2019·5 cites·19 claims
- 0682US9330701B1Dynamic track misregistration dependent error scansSEAGATE TECHNOLOGY LLC·Filed 2014·Granted May 3, 2016·5 cites·20 claims
- 0778US10482908B2Performance monitoring of a near-field transducer of a heat-assisted magnetic recording sliderSEAGATE TECHNOLOGY LLC·Filed 2018·Granted Nov 19, 2019·3 cites·20 claims
- 0877US10997996B1Flexible on-cylinder limit for drive performance managementSEAGATE TECHNOLOGY LLC·Filed 2020·Granted May 4, 2021·2 cites·20 claims
- 0976US11074933B1Write once read many data storage devicesSEAGATE TECHNOLOGY LLC·Filed 2020·Granted Jul 27, 2021·1 cites·19 claims
- 1074US9875763B1Recovering user data from a variably encroached data trackSEAGATE TECHNOLOGY LLC·Filed 2016·Granted Jan 23, 2018·4 cites·20 claims
- 1173US10777224B2Servo zone transition optimization for disk drivesSEAGATE TECHNOLOGY LLC·Filed 2019·Granted Sep 15, 2020·2 cites·20 claims
- 1271US9741386B1Setting laser current based on modulation level of an optical power sensor measurementSEAGATE TECHNOLOGY LLC·Filed 2016·Granted Aug 22, 2017·2 cites·20 claims
- 1369US9093093B2Adaptive guard band for multiple heads of a data storage deviceSEAGATE TECHNOLOGY LLC·Filed 2013·Granted Jul 28, 2015·2 cites·19 claims
- 1468US9761258B2Servo parameterization for multi-sensor readerSEAGATE TECHNOLOGY LLC·Filed 2014·Granted Sep 12, 2017·2 cites·18 claims
- 1565US12488807B2Multi-revolution hard disk drives with reduced servo overheadSEAGATE TECHNOLOGY LLC·Filed 2024·Granted Dec 2, 2025·0 cites·17 claims
- 1665US12347454B1High-density archival storage using conventional hard disk drive architectureSEAGATE TECHNOLOGY LLC·Filed 2024·Granted Jul 1, 2025·0 cites·20 claims
- 1765US9966100B1Setting laser current based on modulation level of an optical power sensor measurementSEAGATE TECHNOLOGY LLC·Filed 2017·Granted May 8, 2018·1 cites·20 claims
- 1856US11380356B2Flexible on-cylinder limit for drive performance managementSEAGATE TECHNOLOGY LLC·Filed 2021·Granted Jul 5, 2022·0 cites·20 claims
- 1943US10083716B1Laser calibration for heat-assisted magnetic recording head using interleaved laser currentSEAGATE TECHNOLOGY LLC·Filed 2017·Granted Sep 25, 2018·0 cites·20 claims
- 2040US6650501B2Higher inter-disc separations to improve disc drive actuator servo performanceSEAGATE TECHNOLOGY LLC·Filed 2001·Granted Nov 18, 2003·0 cites·30 claims
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