Assignee
DPHI ACQUISITIONS INC
US·108 granted patents·1,465 citations·filing 1999–2008
Top patents by PatentIndex Score
108 records- 0195US6980652B1Combination mastered and writeable medium and use in electronic internet applianceDPHI ACQUISITIONS INC·Filed 2000·Granted Dec 27, 2005·54 cites·3 claims
- 0295US6636966B1Digital rights management within an embedded storage deviceDPHI ACQUISITIONS INC·Filed 2000·Granted Oct 21, 2003·148 cites·19 claims
- 0394US7110982B2Secure access method and systemDPHI ACQUISITIONS INC·Filed 2001·Granted Sep 19, 2006·157 cites·8 claims
- 0493US7196979B2Calibration storage methods for a digital focus and tracking servo system with calibrationDPHI ACQUISITIONS INC·Filed 2001·Granted Mar 27, 2007·39 cites·18 claims
- 0593US6823398B1File system management embedded in a storage deviceDPHI ACQUISITIONS INC·Filed 2000·Granted Nov 23, 2004·120 cites·36 claims
- 0689US7549044B2Block-level storage device with content securityDPHI ACQUISITIONS INC·Filed 2003·Granted Jun 16, 2009·57 cites·15 claims
- 0789US6754151B2BEMF timing systemDPHI ACQUISITIONS INC·Filed 2001·Granted Jun 22, 2004·26 cites·3 claims
- 0889US6687215B1Low profile and medium protecting cartridge assemblyDPHI ACQUISITIONS INC·Filed 2000·Granted Feb 3, 2004·27 cites·6 claims
- 0988US6809995B2Digital focus and tracking servo systemDPHI ACQUISITIONS INC·Filed 2001·Granted Oct 26, 2004·23 cites·21 claims
- 1087US7020054B2Digital servo system with biased feed-forwardDPHI ACQUISITIONS INC·Filed 2001·Granted Mar 28, 2006·23 cites·14 claims
- 1187US6914724B2Micro lens and method and apparatus for fabricatingDPHI ACQUISITIONS INC·Filed 2002·Granted Jul 5, 2005·22 cites·13 claims
- 1286US6914868B1Low profile optical headDPHI ACQUISITIONS INC·Filed 2000·Granted Jul 5, 2005·19 cites·32 claims
- 1385US7839729B2Optical drive servo with a servo processor receiving photodetector signalsDPHI ACQUISITIONS INC·Filed 2008·Granted Nov 23, 2010·3 cites·10 claims
- 1485US7310821B2Host certification method and systemDPHI ACQUISITIONS INC·Filed 2001·Granted Dec 18, 2007·49 cites·14 claims
- 1584US6717893B1Laser thermal management systemDPHI ACQUISITIONS INC·Filed 2000·Granted Apr 6, 2004·19 cites·11 claims
- 1684US6631302B1System and method for aligning components of optical headDPHI ACQUISITIONS INC·Filed 2000·Granted Oct 7, 2003·18 cites·16 claims
- 1783US6813226B2Calibration of a focus sum threshold in a focus servo systemDPHI ACQUISITIONS INC·Filed 2001·Granted Nov 2, 2004·16 cites·14 claims
- 1883US6781929B2Digital tracking servo system with multi-track seekDPHI ACQUISITIONS INC·Filed 2001·Granted Aug 24, 2004·17 cites·12 claims
- 1982US6908725B2Double-sided hybrid optical disk with surface topologyDPHI ACQUISITIONS INC·Filed 2002·Granted Jun 21, 2005·16 cites·18 claims
- 2081US6906985B2Calibration of tracking error signal gain in a tracking servo systemDPHI ACQUISITIONS INC·Filed 2001·Granted Jun 14, 2005·14 cites·19 claims
- 2181US6632310B2Disk drive actuator and method of making sameDPHI ACQUISITIONS INC·Filed 2001·Granted Oct 14, 2003·16 cites·13 claims
- 2280US6958957B2Digital tracking and focus servo system with TES to FES crosstalk calibrationDPHI ACQUISITIONS INC·Filed 2001·Granted Oct 25, 2005·14 cites·11 claims
- 2379US7092322B2Calibration of focus error signal offset in a focus servo systemDPHI ACQUISITIONS INC·Filed 2001·Granted Aug 15, 2006·13 cites·9 claims
- 2479US6965547B2Tracking and focus servo system with error signal inverse non-linearity calibrationDPHI ACQUISITIONS INC·Filed 2001·Granted Nov 15, 2005·12 cites·18 claims
- 2577US7023776B2Calibration initiation methods for a tracking and focus servo systemDPHI ACQUISITIONS INC·Filed 2001·Granted Apr 4, 2006·11 cites·24 claims
- 2676US6912189B2Skip list management for a write-once optical diskDPHI ACQUISITIONS INC·Filed 2002·Granted Jun 28, 2005·11 cites·7 claims
- 2776US6728182B2Tracking and focus servo system with a media type boundary crossing detectorDPHI ACQUISITIONS INC·Filed 2001·Granted Apr 27, 2004·10 cites·30 claims
- 2876US6704256B2Continuous flexible connection for miniature optical headDPHI ACQUISITIONS INC·Filed 2001·Granted Mar 9, 2004·10 cites·10 claims
- 2975US7079459B2System and method for performing a spin motor startup operationDPHI ACQUISITIONS INC·Filed 2001·Granted Jul 18, 2006·10 cites·4 claims
- 3075US6910174B2Error correction code block formatDPHI ACQUISITIONS INC·Filed 2001·Granted Jun 21, 2005·10 cites·5 claims
- 3175US6904007B2Digital servo system with loop gain calibrationDPHI ACQUISITIONS INC·Filed 2001·Granted Jun 7, 2005·10 cites·16 claims
- 3275US6891781B2Digital servo system with second order compensatorDPHI ACQUISITIONS INC·Filed 2001·Granted May 10, 2005·10 cites·15 claims
- 3375US6738333B1Format for recording data in a storage diskDPHI ACQUISITIONS INC·Filed 2000·Granted May 18, 2004·11 cites·18 claims
- 3474US6885619B2Detector input stray light offset calibration in an optical disk driveDPHI ACQUISITIONS INC·Filed 2001·Granted Apr 26, 2005·9 cites·25 claims
- 3573US7016294B2Inner region identifier for optical diskDPHI ACQUISITIONS INC·Filed 2002·Granted Mar 21, 2006·9 cites·23 claims
- 3673US6741530B2Time critical and non-time critical tasks control system for an optical disk using first and second processorsDPHI ACQUISITIONS INC·Filed 2001·Granted May 25, 2004·9 cites·29 claims
- 3772US7958377B2Secure access system and methodDPHI ACQUISITIONS INC·Filed 2008·Granted Jun 7, 2011·4 cites·1 claims
- 3872US7051054B1Method and apparatus for emulating read/write file system on a write-once storage diskDPHI ACQUISITIONS INC·Filed 2000·Granted May 23, 2006·31 cites·12 claims
- 3972US6656392B1Method and apparatus for compensating optical disks for effects of thin filmsDPHI ACQUISITIONS INC·Filed 2000·Granted Dec 2, 2003·9 cites·10 claims
- 4071US6809903B2Low profile cartridge for data storage diskDPHI ACQUISITIONS INC·Filed 2000·Granted Oct 26, 2004·8 cites·1 claims
- 4170US7808880B2Optical disk drive with hybrid solid immersion objective lensDPHI ACQUISITIONS INC·Filed 2006·Granted Oct 5, 2010·1 cites·10 claims
- 4270US6950380B2Detector input dark current offset calibration in an optical disk drive digital servoDPHI ACQUISITIONS INC·Filed 2001·Granted Sep 27, 2005·7 cites·10 claims
- 4370US6937543B2Digital focus servo system with a sliding notch filterDPHI ACQUISITIONS INC·Filed 2001·Granted Aug 30, 2005·7 cites·6 claims
- 4469US7808879B2Optical disk drive with micro-SILDPHI ACQUISITIONS INC·Filed 2005·Granted Oct 5, 2010·1 cites·15 claims
- 4569US7782721B2Digital focus and tracking servo system with multi-zone calibrationDPHI ACQUISITIONS INC·Filed 2001·Granted Aug 24, 2010·7 cites·11 claims
- 4669US7729495B2System and method for detecting unauthorized copying of encrypted dataDPHI ACQUISITIONS INC·Filed 2001·Granted Jun 1, 2010·15 cites·9 claims
- 4769US7554898B2Dual density disc with associated propertiesDPHI ACQUISITIONS INC·Filed 2002·Granted Jun 30, 2009·7 cites·7 claims
- 4868US7116621B2System and method for handling commands in an optical disc driveDPHI ACQUISITIONS INC·Filed 2001·Granted Oct 3, 2006·7 cites·2 claims
- 4968US7016280B2Tracking and focus servo system with defect detectionDPHI ACQUISITIONS INC·Filed 2001·Granted Mar 21, 2006·6 cites·20 claims
- 5068US6704261B2Spin motor control in an optical driveDPHI ACQUISITIONS INC·Filed 2001·Granted Mar 9, 2004·6 cites·8 claims
Showing the top 50 of 108 patent records by PatentIndex Score.
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