Edgar De-Jia Sheh

Person

Cupertino, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Data storage device employing triangle-like dither to spread track...
- Patent number 10,923,146
- Issue date Feb 16, 2021
- Western Digital Technologies, Inc.
- Guoxiao Guo
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive writing radial offset spiral servo tracks by reading spi...
- Patent number 9,076,490
- Issue date Jul 7, 2015
- Western Digital Technologies, Inc.
- Jianbin Nie
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive measuring radial offset between heads by detecting a dif...
- Patent number 9,064,537
- Issue date Jun 23, 2015
- Western Digital Technologies, Inc.
- Jianbin Nie
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive opening spiral crossing window based on DC and AC spiral...
- Patent number 9,053,727
- Issue date Jun 9, 2015
- Western Digital Technologies, Inc.
- Jianbin Nie
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive measuring spiral track error by measuring a slope of a s...
- Patent number 9,047,901
- Issue date Jun 2, 2015
- Western Digital Technologies, Inc.
- Jianbin Nie
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage device reading first spiral track while simultaneously...
- Patent number 8,982,490
- Issue date Mar 17, 2015
- Western Digital Technologies, Inc.
- Charles A. Park
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive calibrating a velocity profile prior to writing a spiral...
- Patent number 8,917,474
- Issue date Dec 23, 2014
- Western Digital Technologies, Inc.
- Brian P. Rigney
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive adapting feed-forward compensation using iterative learn...
- Patent number 8,902,535
- Issue date Dec 2, 2014
- Western Digital Technologies, Inc.
- Jianbin Nie
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive detecting when head is on ramp
- Patent number 8,861,126
- Issue date Oct 14, 2014
- Western Digital Technologies, Inc.
- Soo-Choon Kang
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive adjusting gain and offset of BEMF velocity sensor during...
- Patent number 8,665,551
- Issue date Mar 4, 2014
- Western Digital Technologies, Inc.
- Brian P. Rigney
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive performing in-drive spiral track writing
- Patent number 8,634,283
- Issue date Jan 21, 2014
- Western Digital Technologies, Inc.
- Brian P. Rigney
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive writing a sync mark seam in a bootstrap spiral track
- Patent number 8,634,154
- Issue date Jan 21, 2014
- Western Digital Technologies, Inc.
- Brian P. Rigney
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive biasing timing recovery measurements for spiral tracks b...
- Patent number 8,498,076
- Issue date Jul 30, 2013
- Western Digital Technologies, Inc.
- Edgar D. Sheh
- G11 - INFORMATION STORAGE
Information Patent Grant
Locating an initial servo track in order to servo write a disk driv...
- Patent number 7,457,071
- Issue date Nov 25, 2008
- Western Digital Technologies, Inc.
- Edgar D. Sheh
- G11 - INFORMATION STORAGE
Information Patent Grant
Compensating for repeatable phase error when servo writing a disk d...
- Patent number 7,391,584
- Issue date Jun 24, 2008
- Western Digital Technologies, Inc.
- Edgar D. Sheh
- G11 - INFORMATION STORAGE
Information Patent Grant
Fault tolerant sync mark detection while servo writing a disk drive...
- Patent number 7,391,583
- Issue date Jun 24, 2008
- Western Digital Technologies, Inc.
- Edgar D. Sheh
- G11 - INFORMATION STORAGE
Information Patent Grant
Adjusting track density by changing PES algorithm when servo writin...
- Patent number 7,068,459
- Issue date Jun 27, 2006
- Western Digital Technologies, Inc.
- Robert L. Cloke
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and disk drive for improving head position accuracy during t...
- Patent number 6,693,764
- Issue date Feb 17, 2004
- Western Digital Technologies, Inc.
- Edgar D. Sheh
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive with feed-forward control path that receives a reference...
- Patent number 6,614,618
- Issue date Sep 2, 2003
- Western Digital Technologies, Inc.
- Edgar D. Sheh
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for transparent switching and controlling optical signals us...
- Patent number 6,529,654
- Issue date Mar 4, 2003
- Nayna Networks, Inc.
- Richard Koonwai Wong
- G02 - OPTICS
Information Patent Grant
Disk drive capable of autonomously evaluating and adapting the freq...
- Patent number 6,204,988
- Issue date Mar 20, 2001
- Western Digital Corporation
- Raffi Codilian
- G11 - INFORMATION STORAGE

Edgar De-Jia Sheh

Person

Patents Grantslast 30 patents

Data storage device employing triangle-like dither to spread track...

Disk drive writing radial offset spiral servo tracks by reading spi...

Disk drive measuring radial offset between heads by detecting a dif...

Disk drive opening spiral crossing window based on DC and AC spiral...

Disk drive measuring spiral track error by measuring a slope of a s...

Data storage device reading first spiral track while simultaneously...

Disk drive calibrating a velocity profile prior to writing a spiral...

Disk drive adapting feed-forward compensation using iterative learn...

Disk drive detecting when head is on ramp

Disk drive adjusting gain and offset of BEMF velocity sensor during...

Disk drive performing in-drive spiral track writing

Disk drive writing a sync mark seam in a bootstrap spiral track

Disk drive biasing timing recovery measurements for spiral tracks b...

Locating an initial servo track in order to servo write a disk driv...

Compensating for repeatable phase error when servo writing a disk d...

Fault tolerant sync mark detection while servo writing a disk drive...

Adjusting track density by changing PES algorithm when servo writin...

Method and disk drive for improving head position accuracy during t...

Disk drive with feed-forward control path that receives a reference...

Method for transparent switching and controlling optical signals us...

Disk drive capable of autonomously evaluating and adapting the freq...