Inventor · disambiguated record
Robert L. Cloke
Also filed as: CLOKE ROBERT L · CLOKE ROBERT LESLIE
37 granted patents·4,649 citations·filing 1975–2004
99Inventor score
Top patents by PatentIndex Score
37 records- 0199US6977789B1Disk drive for circular self servo writing and spiral self servo writing using prewritten reference servo burstsWESTERN DIGITAL TECH INC·Filed 2002·Granted Dec 20, 2005·153 cites·20 claims
- 0299US6965489B1Using an external spiral servo writer to write reference servo sectors and spiral tracks to a disk to facilitate writing product servo sectors to the diskWESTERN DIGITAL TECH INC·Filed 2004·Granted Nov 15, 2005·173 cites·11 claims
- 0399US6710951B1Phase locked loop employing a fractional frequency synthesizer as a variable oscillatorWESTERN DIGITAL TECH INC·Filed 2001·Granted Mar 23, 2004·175 cites·31 claims
- 0499US6519104B1Computer system comprising a host connected to a disk drive employing read channel IC with common port for data and servoWESTERN DIGITAL TECH INC·Filed 2002·Granted Feb 11, 2003·161 cites·10 claims
- 0599US6487032B1Computer 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 channelWESTERN DIGITAL TECH INC·Filed 2002·Granted Nov 26, 2002·176 cites·4 claims
- 0699US6441981B1Disk drive including a recording surface employing servo zones recorded at a channel frequency different from data zonesWESTERN DIGITAL TECH INC·Filed 2001·Granted Aug 27, 2002·178 cites·18 claims
- 0799US6411452B1Disk drive employing read error tolerant sync mark detectionWESTERN DIGITAL TECH INC·Filed 1997·Granted Jun 25, 2002·234 cites·5 claims
- 0899US6262857B1Disk drive including a recording surface employing servo zones with banded data zonesWESTERN DIGITAL CORP·Filed 1998·Granted Jul 17, 2001·184 cites·3 claims
- 0999US6178056B1Disk drive employing state variable trap registers for providing stored servo and user data state variables to sampled-data channelWESTERN DIGITAL CORP·Filed 1999·Granted Jan 23, 2001·201 cites·4 claims
- 1098US7068459B1Adjusting track density by changing PES algorithm when servo writing a disk drive from spiral tracksWESTERN DIGITAL TECH INC·Filed 2004·Granted Jun 27, 2006·175 cites·38 claims
- 1198US7046472B1Method and apparatus for self servowriting of tracks of a disk drive using an observer based on an equivalent one-dimensional state modelWESTERN DIGITAL TECH INC·Filed 2003·Granted May 16, 2006·113 cites·8 claims
- 1298US7016134B1Using an external spiral servo writer to write spiral tracks to a disk to facilitate writing product servo sectors to the diskWESTERN DIGITAL TECH INC·Filed 2004·Granted Mar 21, 2006·127 cites·7 claims
- 1398US6992848B1Using an external spiral servo writer to write spiral reference patterns to a disk to facilitate writing product servo bursts to the diskWESTERN DIGITAL TECH INC·Filed 2002·Granted Jan 31, 2006·138 cites·30 claims
- 1498US6992851B1Method for nonsequentially writing reference spiral servo patterns to a disk to compensate for disk expansionWESTERN DIGITAL TECH INC·Filed 2004·Granted Jan 31, 2006·124 cites·22 claims
- 1598US6989954B1Demodulating servo sectors and spiral tracks using common circuitryWESTERN DIGITAL TECH INC·Filed 2004·Granted Jan 24, 2006·137 cites·13 claims
- 1698US6924961B1Method and apparatus for self servowriting of tracks of a disk drive using an observer based on an equivalent one-dimensional state modelWESTERN DIGITAL TECH INC·Filed 2002·Granted Aug 2, 2005·113 cites·8 claims
- 1798US6924960B1Timing compensation in a self-servowriting systemWESTERN DIGITAL TECH INC·Filed 2003·Granted Aug 2, 2005·137 cites·22 claims
- 1898US6600620B1Self-servo writing a disk drive by propagating interleaved sets of timing clocks and servo bursts during alternate time intervalsWESTERN DIGITAL TECH INC·Filed 2000·Granted Jul 29, 2003·178 cites·16 claims
- 1998US6278568B1Disk drive employing read channel IC with common port for data and servoWESTERN DIGITAL·Filed 1998·Granted Aug 21, 2001·254 cites·10 claims
- 2098US6208477B1Hard disk drive having a built-in self-test for measuring non-linear signal distortionWESTERN DIGITAL CORP·Filed 1997·Granted Mar 27, 2001·221 cites·14 claims
- 2198US6191909B1Polling a preamplifier within a disk drive to remotely determine pre-established parametric valuesWESTERN DIGITAL CORP·Filed 2000·Granted Feb 20, 2001·136 cites·9 claims
- 2297US6999263B1Method and apparatus for self servowriting of tracks of a disk drive using a servo control loop having a two-dimensional weighted digital state compensatorWESTERN DIGITAL TECH INC·Filed 2004·Granted Feb 14, 2006·111 cites·28 claims
- 2397US6819518B1Method and apparatus for self servowriting of tracks of a disk drive using a servo control loop having a two-dimensional digital state compensatorWESTERN DIGITAL TECH INC·Filed 2002·Granted Nov 16, 2004·112 cites·24 claims
- 2497US6693760B1Preamplifier circuit configurable to allow simultaneous read and write operations for self-servo writing a disk driveWESTERN DIGITAL TECH INC·Filed 2000·Granted Feb 17, 2004·160 cites·2 claims
- 2597US6111717ADisk drive comprising a programmable preamplifier including a multiplexer for selecting between internal digital signals for output to a terminalWESTERN DIGITAL CORP·Filed 1998·Granted Aug 29, 2000·175 cites·16 claims
- 2696US5822143ADecision feedback equalization implementation of partial-response signaling in a magnetic recording channelWESTERN DIGITAL CORP·Filed 1996·Granted Oct 13, 1998·135 cites·42 claims
- 2795US6246346B1Storage system employing high-rate code with constraint on run length between occurrences of an influential patternWESTERN DIGITAL CORP·Filed 1997·Granted Jun 12, 2001·139 cites·18 claims
- 2892US5726821AProgrammable preamplifier unit with serial interface for disk data storage device using MR headsWESTERN DIGITAL CORP·Filed 1995·Granted Mar 10, 1998·66 cites·3 claims
- 2989US6292912B1Disk drive having built-in self-test system for characterizing performance of the driveWESTERN DIGITAL TECH INC·Filed 1998·Granted Sep 18, 2001·154 cites·12 claims
- 3085US4697098AComposite gate generator circuit for detecting valid data signalsPRIAM CORP·Filed 1985·Granted Sep 29, 1987·34 cites·7 claims
- 3178US4599570APhase detector with independent offset correctionSPERRY CORP·Filed 1982·Granted Jul 8, 1986·28 cites·15 claims
- 3266US4122501ASystem for recording and reading back data on a recording mediaSPERRY RAND CORP·Filed 1976·Granted Oct 24, 1978·12 cites·2 claims
- 3356US4080576ATow mode harmonic and nonharmonic phase detectorSPERRY RAND CORP·Filed 1977·Granted Mar 21, 1978·12 cites·9 claims
- 3451US4071832ACurrent controlled oscillatorSPERRY RAND CORP·Filed 1976·Granted Jan 31, 1978·8 cites·2 claims
- 3550US4691254AData processing system including encoder, decoder and write precompensator, using run length limited codePRIAM CORP·Filed 1985·Granted Sep 1, 1987·7 cites·10 claims
- 3641US4003000ASinusoidal oscillator with electronically variable frequencySPERRY RAND CORP·Filed 1975·Granted Jan 11, 1977·5 cites·10 claims
- 3736US4506236AComposite filter/differentiatorSPERRY CORP·Filed 1982·Granted Mar 19, 1985·3 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →