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Charles R. Watt
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Longmont, CO, US
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Patents Grants
last 30 patents
Information
Patent Grant
Methods, systems, and computer program products for correcting repe...
Patent number
8,565,052
Issue date
Oct 22, 2013
Optical Devices, LLC
Fred R. Hansen
G11 - INFORMATION STORAGE
Information
Patent Grant
Drum for use in testing optical tape media and method and apparatus...
Patent number
8,510,766
Issue date
Aug 13, 2013
Oracle International Corporation
Faramarz Mahnad
G11 - INFORMATION STORAGE
Information
Patent Grant
Self-servo writing using reference patterns with timing correction
Patent number
8,000,049
Issue date
Aug 16, 2011
Seagate Technology LLC
John W. Vanlaanen
G11 - INFORMATION STORAGE
Information
Patent Grant
Digital focus and tracking servo system with multi-zone calibration
Patent number
7,782,721
Issue date
Aug 24, 2010
DPHI Acquisitions, Inc.
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Grant
Digital servo system with inverse non-linearity compensation
Patent number
7,680,004
Issue date
Mar 16, 2010
DPHI Acquisitions, Inc.
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Grant
Reduced convolution for repetitive disturbance rejection
Patent number
7,675,702
Issue date
Mar 9, 2010
Seagate Technology LLC
Charles R. Watt
G11 - INFORMATION STORAGE
Information
Patent Grant
Close focus algorithm in a digital focus servo system
Patent number
7,672,199
Issue date
Mar 2, 2010
DPHI Acquisitions, Inc.
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Grant
Servo writing with offset compensation for prewritten reference
Patent number
7,551,387
Issue date
Jun 23, 2009
Maxtor Corporation
Yu Sun
G11 - INFORMATION STORAGE
Information
Patent Grant
Digital focus and tracking servo system with one-track jump
Patent number
7,260,031
Issue date
Aug 21, 2007
DPHI Acquisitions, Inc.
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Grant
Calibration storage methods for a digital focus and tracking servo...
Patent number
7,196,979
Issue date
Mar 27, 2007
DPHI Acquisitions, Inc.
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Grant
System and method for performing a spin motor startup operation
Patent number
7,079,459
Issue date
Jul 18, 2006
DPHI Acquisitions, Inc.
Charles R. Watt
G11 - INFORMATION STORAGE
Information
Patent Grant
CLV system and method using PSA lookup
Patent number
7,065,018
Issue date
Jun 20, 2006
DPHI Acquisitions, Inc.
Charles R. Watt
G11 - INFORMATION STORAGE
Information
Patent Grant
System and method for controlling tracking and seeking in an optica...
Patent number
7,057,983
Issue date
Jun 6, 2006
DPHI Acquisitions, Inc.
Christopher J. Turner
G11 - INFORMATION STORAGE
Information
Patent Grant
System and method for controlling focus in an optical disc drive
Patent number
7,054,242
Issue date
May 30, 2006
DPHI Acquisitions, Inc.
Christopher J. Turner
G11 - INFORMATION STORAGE
Information
Patent Grant
System and method for controlling time critical operations in a con...
Patent number
7,038,988
Issue date
May 2, 2006
DPHI Acquisitions, Inc.
Christopher J. Turner
G11 - INFORMATION STORAGE
Information
Patent Grant
Calibration initiation methods for a tracking and focus servo system
Patent number
7,023,776
Issue date
Apr 4, 2006
DPHI Acquisitions, Inc.
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Grant
Digital servo system with biased feed-forward
Patent number
7,020,054
Issue date
Mar 28, 2006
DPHI Acquisitions, Inc.
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Grant
System and method to adjust the level of re-calibration effort base...
Patent number
6,977,873
Issue date
Dec 20, 2005
DPHI Acquisitions, Inc.
Christopher J. Turner
G11 - INFORMATION STORAGE
Information
Patent Grant
Focus detection in a digital focus servo system
Patent number
6,970,410
Issue date
Nov 29, 2005
DPHI Acquisitions, Inc.
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Grant
Calibration of tracking error signal offset in a tracking servo system
Patent number
6,970,403
Issue date
Nov 29, 2005
DPHI Acquisition, Inc.
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Grant
System and method for controlling interrupts in a control system fo...
Patent number
6,963,524
Issue date
Nov 8, 2005
DPHI Acquisitions, Inc.
Christopher J. Turner
G11 - INFORMATION STORAGE
Information
Patent Grant
Digital tracking and focus servo system with TES to FES crosstalk c...
Patent number
6,958,957
Issue date
Oct 25, 2005
DPHI Acquisitions, Inc.
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Grant
System and method for handling events in an optical disc drive
Patent number
6,958,963
Issue date
Oct 25, 2005
DPHI Acquisitions, Inc.
Christopher J. Turner
G11 - INFORMATION STORAGE
Information
Patent Grant
Detector input dark current offset calibration in an optical disk d...
Patent number
6,950,380
Issue date
Sep 27, 2005
DPHI Acquisitions, Inc.
Charles R. Watt
G11 - INFORMATION STORAGE
Information
Patent Grant
Digital focus servo system with a sliding notch filter
Patent number
6,937,543
Issue date
Aug 30, 2005
DPHI Acquisitions, Inc.
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Grant
Tracking and focus servo system with head load
Patent number
6,930,963
Issue date
Aug 16, 2005
DPHI Acquistions, Inc.
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Grant
Tracking and focus servo system with anti-skate algorithm
Patent number
6,922,380
Issue date
Jul 26, 2005
DPHI Acquisitions, Inc.
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Grant
Calibration of tracking error signal gain in a tracking servo system
Patent number
6,906,985
Issue date
Jun 14, 2005
DPHI Acquisitions, Inc.
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Grant
Digital servo system with loop gain calibration
Patent number
6,904,007
Issue date
Jun 7, 2005
DPHI Acquisitions, Inc.
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Grant
Kp and Ki lookup system and method
Patent number
6,901,040
Issue date
May 31, 2005
DPHI Acquisitions, Inc.
Charles R. Watt
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
DRUM FOR USE IN TESTING OPTICAL TAPE MEDIA AND METHOD AND APPARATUS...
Publication number
20130152112
Publication date
Jun 13, 2013
Oracle International Corporation
FARAMARZ MAHNAD
G11 - INFORMATION STORAGE
Information
Patent Application
Methods, Systems, And Computer Program Products For Correcting Repe...
Publication number
20120320720
Publication date
Dec 20, 2012
Fred R. Hansen
G11 - INFORMATION STORAGE
Information
Patent Application
SERVO WRITING WITH OFFSET COMPENSATION FOR PREWRITTEN REFERENCE
Publication number
20080030894
Publication date
Feb 7, 2008
Maxtor Corporation
YU SUN
G11 - INFORMATION STORAGE
Information
Patent Application
REDUCED CONVOLUTION FOR REPETITIVE DISTURBANCE REJECTION
Publication number
20070273996
Publication date
Nov 29, 2007
Seagate Technology LLC
Charles R. Watt
G11 - INFORMATION STORAGE
Information
Patent Application
ADAPTIVELY ADJUSTING SEEK FUNCTION CONTROL PARAMETERS BASED ON OFF-...
Publication number
20070253096
Publication date
Nov 1, 2007
Seagate Technology LLC
Steven J. Alfred
G11 - INFORMATION STORAGE
Information
Patent Application
Self-servo writing using reference patterns with timing correction
Publication number
20070195445
Publication date
Aug 23, 2007
John W. Vanlaanen
G11 - INFORMATION STORAGE
Information
Patent Application
System and method for controlling tracking and seeking in an optica...
Publication number
20030165090
Publication date
Sep 4, 2003
Christopher J. Turner
G11 - INFORMATION STORAGE
Information
Patent Application
System and method for coordinating time critical and non-time criti...
Publication number
20030165088
Publication date
Sep 4, 2003
Christopher J. Turner
G11 - INFORMATION STORAGE
Information
Patent Application
PMAD/PSA digital feedback system
Publication number
20030165099
Publication date
Sep 4, 2003
Charles R. Watt
G11 - INFORMATION STORAGE
Information
Patent Application
Detector input stray light offset calibration in an optical disk drive
Publication number
20030043705
Publication date
Mar 6, 2003
DataPlay, Inc.
Charles R. Watt
G11 - INFORMATION STORAGE
Information
Patent Application
Digital servo system with loop gain calibration
Publication number
20030031100
Publication date
Feb 13, 2003
DataPlay, Inc.
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Application
Focus servo system with a sliding notch filter
Publication number
20020186624
Publication date
Dec 12, 2002
DataPlay, Inc.
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Application
Digital servo system with second order compensator
Publication number
20020150006
Publication date
Oct 17, 2002
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Application
Shaped control efforts in a digital servo system
Publication number
20020145951
Publication date
Oct 10, 2002
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Application
System and method for controlling focus in an optical disc drive
Publication number
20020145955
Publication date
Oct 10, 2002
DataPlay, Inc.
Christopher J. Turner
G11 - INFORMATION STORAGE
Information
Patent Application
Kp and Ki lookup system and method
Publication number
20020141304
Publication date
Oct 3, 2002
Charles R. Watt
G11 - INFORMATION STORAGE
Information
Patent Application
Digital tracking and focus servo system with TES to FES crosstalk c...
Publication number
20020141302
Publication date
Oct 3, 2002
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Application
Tracking and focus servo system with direction sensor
Publication number
20020141312
Publication date
Oct 3, 2002
DataPlay, Inc.
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Application
System and method for controlling interrupts in a control system fo...
Publication number
20020141299
Publication date
Oct 3, 2002
Christopher J. Turner
G11 - INFORMATION STORAGE
Information
Patent Application
Digital focus and tracking servo system with one-track jump
Publication number
20020136107
Publication date
Sep 26, 2002
DataPlay, Inc.
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Application
Tracking and focus servo system with head load
Publication number
20020136108
Publication date
Sep 26, 2002
DataPlay, Inc.
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Application
Digital focus and tracking servo system with multi-zone calibration
Publication number
20020136114
Publication date
Sep 26, 2002
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Application
BEMF timing system
Publication number
20020136127
Publication date
Sep 26, 2002
Charles R. Watt
G11 - INFORMATION STORAGE
Information
Patent Application
Close focus algorithm in a digital focus servo system
Publication number
20020136109
Publication date
Sep 26, 2002
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Application
Tracking and focus servo system with automatic media type detector
Publication number
20020136110
Publication date
Sep 26, 2002
Charles R. Watt
G11 - INFORMATION STORAGE
Information
Patent Application
Optical disk drive with a digital focus and tracking servo system
Publication number
20020136111
Publication date
Sep 26, 2002
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Application
System and method for handling events in an optical disc drive
Publication number
20020136130
Publication date
Sep 26, 2002
DataPlay, Inc.
Christopher J. Turner
G11 - INFORMATION STORAGE
Information
Patent Application
Calibration of tracking error signal offset in a tracking servo system
Publication number
20020136112
Publication date
Sep 26, 2002
DataPlay, Inc.
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Application
Digital servo system with inverse non-linearity compensation
Publication number
20020136116
Publication date
Sep 26, 2002
Ron J. Kadlec
G11 - INFORMATION STORAGE
Information
Patent Application
System and method for recovering from performance errors in an opti...
Publication number
20020138783
Publication date
Sep 26, 2002
Christopher J. Turner
G11 - INFORMATION STORAGE