| Patent | Date |
|---|
Adjusting track density by changing PES algorithm when servo writing a disk drive from spiral tracks
Grant 7,068,459 - Cloke , et al. June 27, 2 | 2006-06-27 |
Method and apparatus for self servowriting of tracks of a disk drive using an observer based on an equivalent one-dimensional state model
Grant 7,046,472 - Melkote , et al. May 16, 2 | 2006-05-16 |
Using an external spiral servo writer to write spiral tracks to a disk to facilitate writing product servo sectors to the disk
Grant 7,016,134 - Agarwal , et al. March 21, 2 | 2006-03-21 |
Method and apparatus for self servowriting of tracks of a disk drive using a servo control loop having a two-dimensional weighted digital state compensator
Grant 6,999,263 - Melkote , et al. February 14, 2 | 2006-02-14 |
Using an external spiral servo writer to write spiral reference patterns to a disk to facilitate writing product servo bursts to the disk
Grant 6,992,848 - Agarwal , et al. January 31, 2 | 2006-01-31 |
Method for nonsequentially writing reference spiral servo patterns to a disk to compensate for disk expansion
Grant 6,992,851 - Cloke January 31, 2 | 2006-01-31 |
Demodulating servo sectors and spiral tracks using common circuitry
Grant 6,989,954 - Lee , et al. January 24, 2 | 2006-01-24 |
Disk drive for circular self servo writing and spiral self servo writing using prewritten reference servo bursts
Grant 6,977,789 - Cloke December 20, 2 | 2005-12-20 |
Using an external spiral servo writer to write reference servo sectors and spiral tracks to a disk to facilitate writing product servo sectors to the disk
Grant 6,965,489 - Lee , et al. November 15, 2 | 2005-11-15 |
Method and apparatus for self servowriting of tracks of a disk drive using an observer based on an equivalent one-dimensional state model
Grant 6,924,961 - Melkote , et al. August 2, 2 | 2005-08-02 |
Timing compensation in a self-servowriting system
Grant 6,924,960 - Melkote , et al. August 2, 2 | 2005-08-02 |
Method and apparatus for self servowriting of tracks of a disk drive using a servo control loop having a two-dimensional digital state compensator
Grant 6,819,518 - Melkote , et al. November 16, 2 | 2004-11-16 |
Phase locked loop employing a fractional frequency synthesizer as a variable oscillator
Grant 6,710,951 - Cloke March 23, 2 | 2004-03-23 |
Computer system comprising a host connected to a disk drive employing read channel IC with common port for data and servo
Grant 6,519,104 - Cloke , et al. February 11, 2 | 2003-02-11 |
Computer system comprising a host connected to a disk drive employing state variable trap registers for providing stored servo and user data state variables to sampled-data channel
Grant 6,487,032 - Cloke , et al. November 26, 2 | 2002-11-26 |
Disk drive employing read channel IC with common port for data and servo
Grant 6,278,568 - Cloke , et al. August 21, 2 | 2001-08-21 |
Polling a preamplifier within a disk drive to remotely determine pre-established parametric values
Grant 6,191,909 - Cloke , et al. February 20, 2 | 2001-02-20 |
Disk drive comprising a programmable preamplifier including a multiplexer for selecting between internal digital signals for output to a terminal
Grant 6,111,717 - Cloke , et al. August 29, 2 | 2000-08-29 |
Programmable preamplifier unit with serial interface for disk data storage device using MR heads
Grant 5,726,821 - Cloke , et al. March 10, 1 | 1998-03-10 |
Composite gate generator circuit for detecting valid data signals
Grant 4,697,098 - Cloke September 29, 1 | 1987-09-29 |
Data processing system including encoder, decoder and write precompensator, using run length limited code
Grant 4,691,254 - Cloke September 1, 1 | 1987-09-01 |
Phase detector with independent offset correction
Grant 4,599,570 - Cloke July 8, 1 | 1986-07-08 |
System for recording and reading back data on a recording media
Grant 4,122,501 - Sordello , et al. October 24, 1 | 1978-10-24 |
Tow mode harmonic and nonharmonic phase detector
Grant 4,080,576 - Huber , et al. March 21, 1 | 1978-03-21 |
Current controlled oscillator
Grant 4,071,832 - Cloke January 31, 1 | 1978-01-31 |
Sinusoidal oscillator with electronically variable frequency
Grant 4,003,000 - Sordello , et al. January 11, 1 | 1977-01-11 |
High Speed Data Separator
Grant 3,792,361 - Sordello , et al. February 12, 1 | 1974-02-12 |
Disc Pack Defect Detection System
Grant 3,761,905 - Hollstein, Jr. , et al. September 25, 1 | 1973-09-25 |
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