Inventor · disambiguated record
Christopher P. Zook
Also filed as: ZOOK CHRISTOPHER P · ZOOK CHRISTOPHER PAUL
62 granted patents·4,091 citations·filing 1987–2000
99Inventor score
Top patents by PatentIndex Score
62 records- 0199US6009549ADisk storage system employing error detection and correction of channel coded data, interpolated timing recovery, and retroactive/split-segment symbol synchronizationCIRRUS LOGIC INC·Filed 1997·Granted Dec 28, 1999·249 cites·37 claims
- 0298US5844920AThermal asperity compensation using multiple sync marks for retroactive and split segment data synchronization in a magnetic disk storage systemCIRRUS LOGIC INC·Filed 1996·Granted Dec 1, 1998·224 cites·34 claims
- 0398US5701314AOn-the-fly error correction using thermal asperity erasure pointers from a sampled amplitude read channel in a magnetic disk driveCIRRUS LOGIC INC·Filed 1995·Granted Dec 23, 1997·195 cites·14 claims
- 0497US6530060B1Sampled amplitude read channel employing a post processor with a boundary error compensator which compensates for boundary error events in a split-field data sectorCIRRUS LOGIC INC·Filed 2000·Granted Mar 4, 2003·109 cites·22 claims
- 0597US6516443B1Error detection convolution code and post processor for correcting dominant error events of a trellis sequence detector in a sampled amplitude read channel for disk storage systemsCIRRUS LOGIC INC·Filed 2000·Granted Feb 4, 2003·87 cites·25 claims
- 0697US5796535ASampled amplitude read channel employing a user data frequency synthesizer and a servo data frequency synthesizerCIRRUS LOGIC INC·Filed 1995·Granted Aug 18, 1998·137 cites·22 claims
- 0797US5600662AError correction method and apparatus for headersCIRRUS LOGIC INC·Filed 1995·Granted Feb 4, 1997·159 cites·23 claims
- 0896US5991911AConcurrent generation of ECC error syndromes and CRC validation syndromes in a DVD storage deviceCIRRUS LOGIC INC·Filed 1997·Granted Nov 23, 1999·143 cites·18 claims
- 0996US5920578AMethod and apparatus for efficiently processing a multi-dimensional codeCIRRUS LOGIC INC·Filed 1997·Granted Jul 6, 1999·147 cites·24 claims
- 1096US5602857AError correction method and apparatusCIRRUS LOGIC INC·Filed 1994·Granted Feb 11, 1997·117 cites·48 claims
- 1196US5592404AVersatile error correction systemCIRRUS LOGIC INC·Filed 1994·Granted Jan 7, 1997·82 cites·73 claims
- 1295US6646822B1Sampled amplitude read channel employing pipelined reads to reduce the gap between sectorsCIRRUS LOGIC INC·Filed 1997·Granted Nov 11, 2003·99 cites·14 claims
- 1395US6048090AError correction and concurrent verification of a product codeCIRRUS LOGIC INC·Filed 1997·Granted Apr 11, 2000·101 cites·33 claims
- 1495US5996105AECC system employing a data buffer for storing codeword data and a syndrome buffer for storing error syndromesCIRRUS LOGIC INC·Filed 1997·Granted Nov 30, 1999·128 cites·22 claims
- 1594US6047395AError correction processor for correcting a multi-dimensional code by generating an erasure polynomial over one dimension for correcting multiple codewords in another dimensionCIRRUS LOGIC INC·Filed 1998·Granted Apr 4, 2000·115 cites·27 claims
- 1693US6505320B1Multiple-rate channel ENDEC in a commuted read/write channel for disk storage systemsCIRRUS LOGIC INC·Filed 2000·Granted Jan 7, 2003·47 cites·28 claims
- 1793US5491701ABurst error correctorCIRRUS LOGIC INC·Filed 1994·Granted Feb 13, 1996·91 cites·29 claims
- 1893US4845713AMethod and apparatus for determining the coefficients of a locator polynomialEXABYTE CORP·Filed 1987·Granted Jul 4, 1989·85 cites·55 claims
- 1992US6185175B1Sampled amplitude read channel employing noise whitening in a remod/demod sequence detectorCIRRUS LOGIC INC·Filed 1998·Granted Feb 6, 2001·75 cites·21 claims
- 2091US5872800AWrite verify method for correcting unrecoverable sectors in a disc storage system using track level redundancyCIRRUS LOGIC INC·Filed 1996·Granted Feb 16, 1999·76 cites·31 claims
- 2191US5844919ASector and track level error correction system for disc storage systemsCIRRUS LOGIC INC·Filed 1996·Granted Dec 1, 1998·76 cites·23 claims
- 2291US4845714AMultiple pass error correction process and apparatus for product codesEXABYTE CORP·Filed 1987·Granted Jul 4, 1989·61 cites·30 claims
- 2390US6125469AError correction method and apparatusCIRRUS LOGIC INC·Filed 1998·Granted Sep 26, 2000·63 cites·53 claims
- 2490US5974580AConcurrent row/column syndrome generator for a product codeCIRRUS LOGIC INC·Filed 1997·Granted Oct 26, 1999·83 cites·30 claims
- 2590US5696775AMethod and apparatus for detecting the transfer of a wrong sectorCIRRUS LOGIC INC·Filed 1996·Granted Dec 9, 1997·68 cites·26 claims
- 2690US5142422ADual channel helical recorderEXABYTE CORP·Filed 1991·Granted Aug 25, 1992·83 cites·25 claims
- 2790US4835628AApparatus and method for formatting and recording digital data on magnetic tapeEXABYTE CORP·Filed 1987·Granted May 30, 1989·70 cites·64 claims
- 2889US6005727AServo decoder for decoding an error correcting servo code recorded on a disc storage mediumCIRRUS LOGIC INC·Filed 1997·Granted Dec 21, 1999·62 cites·14 claims
- 2989US5793548AFault tolerant sync mark detector for comparing a sign and magnitude of a detected sequence to a target sync mark in sampled amplitude magnetic recordingCIRRUS LOGIC INC·Filed 1995·Granted Aug 11, 1998·55 cites·39 claims
- 3088US6272659B1Error correction code processor employing adjustable correction power for miscorrection minimizationCIRRUS LOGIC INC·Filed 1998·Granted Aug 7, 2001·66 cites·28 claims
- 3185US6108151ASampled amplitude read channel for reading user data and embedded servo data from a magnetic mediumCIRRUS LOGIC INC·Filed 1997·Granted Aug 22, 2000·34 cites·8 claims
- 3285US5737142AServo track address channel code for PR4 magnetic recordingCIRRUS LOGIC INC·Filed 1995·Granted Apr 7, 1998·44 cites·7 claims
- 3384US5727003AMethod and apparatus for flash burst error correctionCIRRUS LOGIC INC·Filed 1995·Granted Mar 10, 1998·42 cites·74 claims
- 3484US5629949AError correction verification method and apparatus using CRC check remaindersCIRRUS LOGIC INC·Filed 1995·Granted May 13, 1997·113 cites·16 claims
- 3584US5623377AFiltering a read signal to attenuate secondary pulses caused by pole tips of a thin film magnetic read headCIRRUS LOGIC INC·Filed 1994·Granted Apr 22, 1997·40 cites·38 claims
- 3683US5729396AFault tolerant sync mark detector enabled relative to a frequency of an acquisition preamble for sampled amplitude recordingCIRRUS LOGIC INC·Filed 1995·Granted Mar 17, 1998·39 cites·25 claims
- 3781US5701304AMethod for correcting unrecoverable sectors using track level redundancy in a disc drive storage systemCIRRUS LOGIC INC·Filed 1996·Granted Dec 23, 1997·37 cites·26 claims
- 3881US5111463AError correction method and apparatusEXABYTE CORP·Filed 1990·Granted May 5, 1992·31 cites·50 claims
- 3979US5724368ACyclical redundancy check method and apparatusCIRRUS LOGIC INC·Filed 1996·Granted Mar 3, 1998·64 cites·62 claims
- 4079US5544178AMethod and apparatus for encoding data in a PRML class-IV digital communication channelCIRRUS LOGIC INC·Filed 1994·Granted Aug 6, 1996·27 cites·42 claims
- 4178US5576707AMethod and apparatus for detecting and decoding data in a PRML class-IV digital communication channelCIRRUS LOGIC INC·Filed 1994·Granted Nov 19, 1996·26 cites·24 claims
- 4276US6662336B1Error correction method and apparatusCIRRUS LOGIC INC·Filed 2000·Granted Dec 9, 2003·22 cites·70 claims
- 4376US5467297AFinite field inversionCIRRUS LOGIC INC·Filed 1994·Granted Nov 14, 1995·36 cites·39 claims
- 4475US5671237ACyclical redundancy check method and apparatusCIRRUS LOGIC INC·Filed 1994·Granted Sep 23, 1997·47 cites·33 claims
- 4572US6574773B1Cost-effective high-throughput enumerative ENDEC employing a plurality of segmented compare tablesFiled 2000·Granted Jun 3, 2003·9 cites·29 claims
- 4672US5465260ADual purpose cyclic redundancy checkCIRRUS LOGIC INC·Filed 1993·Granted Nov 7, 1995·46 cites·103 claims
- 4771US5446743ACoefficient updating method and apparatus for Reed-Solomon decoderCIRRUS LOGIC INC·Filed 1994·Granted Aug 29, 1995·55 cites·37 claims
- 4870US6504664B1Locating index mark in rotating magnetic storage mediaCIRRUS LOGIC INC·Filed 2000·Granted Jan 7, 2003·7 cites·54 claims
- 4969US5668976AError correction method and apparatus for disk drive emulatorCIRRUS LOGIC INC·Filed 1994·Granted Sep 16, 1997·41 cites·55 claims
- 5067US5838738ACoding to improve timing recovery in a sampled amplitude read channelCIRRUS LOGIC INC·Filed 1996·Granted Nov 17, 1998·19 cites·20 claims
Showing the top 50 of 62 patent records by PatentIndex Score.
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