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Method of operating a disk drive including rotating a perpendicular write head to reduce a difference between skew and taper angles, and a disk drive 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G11B-005/56
출원번호 US-0971215 (2004-10-22)
발명자 / 주소
  • Yang,Lin
  • Mei,Lin
  • Tipton, II,William C.
  • McNab,Robert J.
출원인 / 주소
  • Western Digital Technologies, Inc.
대리인 / 주소
    Stetina Brunda Garred & Brucker
인용정보 피인용 횟수 : 71  인용 특허 : 24

초록

초록이 없습니다.

대표청구항

대표청구항이 없습니다.

이 특허에 인용된 특허 (24)

  1. Carley, L. Richard, Accelerometer-assisted servo writing for disk drives.
    상세보기
  2. Hanrahan Kevin P. ; Khan Amanullah, Adaptive micro-actuated head gimbal assembly.
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  3. Magee, David P., Apparatus and method for writing servo patterns on a computer hard disk.
    상세보기
  4. Szita, Gabor; Bryant, Lawrence Matthias; Belser, Karl Arnold; Fennema, Alan, Circumferential positioning of servo sectors for servo track writing.
    상세보기
  5. Stefansky, Frederick M., Disc drive suspension having a moving coil or moving magnet microactuator.
    상세보기
  6. Deng, Youping; Guo, Lin, Disk drive with self servo writing capability.
    상세보기
  7. Youping Deng ; Lin Guo, Disk drive with variable TPI servo tracks.
    상세보기
  8. Koganezawa Shinji,JPX ; Mizoshita Yoshifumi,JPX, Double-driving head actuator.
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  9. Ehrlich, Richard M.; Lin, Jong; Jeppson, David B.; Oki, Kenji, Hard disk drive having self-written servo burst patterns.
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  10. Akiyama Junichi,JPX ; Inoue Tetsuo,JPX, Magnetic disk drive comprising rotary actuator arm having optimal arm length for minimizing track misregistration.
    상세보기
  11. Chainer Timothy Joseph ; Praino Anthony Paul ; Schultz Mark Delorman ; Webb Bucknell C. ; Yarmchuk Edward John, Method and apparatus for determining separation between read and write elements of a transducer.
    상세보기
  12. Suk, Mike; Gillis, Donald R., Method and apparatus for recovering load/unload zone real estate on data storage media in data storage devices to increase a data storage capacity thereof.
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  13. Bi Qiang,SGX ; Gomez Kevin Arthur,SGX ; Pang Jimmy Tze Ming,SGX ; Kuan Stephen Kow Chiew,SGX ; Lye MengEng,SGX ; Lim BengSee,SGX, Method for calibrating MR head geometry in selfservo writing disc drives.
    상세보기
  14. Chainer Timothy Joseph ; Schultz Mark Delorman ; Webb Bucknell Chapman ; Yarmchuk Edward John, Methods and systems for self-servo-writing including writing positioning and timing bursts at different track pitches.
    상세보기
  15. Dunfield, John Charles; Heine, Gunter Karl, Microactuator for fine positioning in a disc drive.
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  16. Ell, Travis Eugene; Morris, John Christopher; Resh, Roger Alan, Microactuator-induced reactive forces for fine positioning a sensor.
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  17. Shukh, Alexander M.; Stageberg, Frank Edgar; Murdock, Edward Stephens; Batra, Sharat, Perpendicular magnetic recording heads with write pole shaped to reduce skew effects during writing.
    상세보기
  18. Yarmchuk Edward John ; Schultz Mark Delorman ; Webb Bucknell C. ; Chainer Timothy Joseph, Radial self-propagation pattern generation for disk file servowriting.
    상세보기
  19. Brown Dana Henry ; Christensen Thomas Charles ; Cunningham Earl A. ; Rogelstad Wayne A., Self servo writing file using the widest head.
    상세보기
  20. Smith Robert F. (San Jose CA), Self-calibration for computer disk read/write offsets.
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  21. Chainer, Timothy J.; Webb, Bucknell C.; Schultz, Mark D.; Yarmchuk, Edward J., Self-servo-writing timing pattern generation with non-overlapping read and write elements.
    상세보기
  22. Chainer Timothy ; Schultz Mark Delorman ; Webb Bucknell Chapman ; Yarmchuk Edward John, Self-servowriting system with dynamic error propagation reduction.
    상세보기
  23. Szita, Gabor; Belser, Karl A.; Ang, ChiapHeok, Servo track writing using extended copying with head offset.
    상세보기
  24. Gomez, Kevin Arthur; Bi, Qiang; Lim, Aik Chuan; Pang, Jimmy Tze Ming, Track pitch control using head offset measurement for self-servowriting tracks in a disc drive.
    상세보기

이 특허를 인용한 특허 (71)

  1. Nguyen, Daniel T.; Sill, Kevin R., Actuator pivot assembly including a bonding adhesive barrier configured to reduce contamination.
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  2. Chen, Yih-Jen D.; McNab, Robert J., Apparatus for manufacturing piezoelectric actuators.
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  3. Nguyen, Daniel T.; Watson, Scott E.; Liem, Andre Y.; Garbarino, Jonathan M.; Weiher, Joshua P., Coined VCM tab to limit cover deflection under pinch load.
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  4. Mallary, Michael L.; Bertero, Gerardo A.; Li, Shaoping, Customized head gimbal assembly bonding skew angle for adjusting two-dimensional magnetic recording reader alignment.
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  5. Tang, Kathy X., Data storage device balancing and maximizing quality metric when configuring arial density of each disk surface.
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  6. Guo, Guoxiao; Yu, Jie, Data storage device comprising dual read sensors and dual servo channels to improve servo demodulation.
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  7. Moser, Andreas; Nguyen, Thien, Data storage device maximizing areal density based on a target quality metric.
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  8. Tian, Jifang; Li, Hongqi; Flynn, William; Hu, Xiaoping; Obregon, Francisco, Devices and methods for system-level disk drive vibration and shock testing.
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  9. Lee, Yu-Min; Zheng, Hao; Griggs, Ian; Tran, Gregory, Disk drive actuator having a radially stepped pivot bore.
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  10. Lifchits, Yakov M.; Bryant, Lawrence M.; Weerasooriya, Siri S.; Ying, Wing, Disk drive adjusting estimated reader/writer offset to achieve target burst crossing signal amplitude when propagating servo sectors.
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  11. Jung, Kameron Kam-Wai; Santa Ana, Paul C.; Ma, Johanes S., Disk drive calibrating radial density then adjusting linear density to balance off-track read capability.
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  12. Li, Shaoping; Bertero, Gerardo A.; Brunnett, Donald, Disk drive configuring one-dimensional and two-dimensional recording areas based on read element spacing.
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  13. Roohr, Lawrence E., Disk drive cross correlating track crossing signal with ideal signal to calibrate jog value.
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  14. Tsai, Chun Sei; Boyle, William B.; Barlow, Carl E., Disk drive employing different servo TPI to data TPI ratios across the disk surface.
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  15. Brunnett, Donald; Bertero, Gerardo A.; Li, Shaoping, Disk drive employing multiple read elements to increase radial band for two-dimensional magnetic recording.
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  16. Mani Biswas, Mousumi, Disk drive filter including fluorinated and non-fluorinated nanopourous organic framework materials.
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  17. Tsai, Chun Sei; Kwan, Stephany W.; Jung, Kameron Kam-Wai, Disk drive generating actual data TPI profile by combining segments of predetermined data TPI profiles.
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  18. Gustafson, John R.; Patel, Mukesh, Disk drive having a conformal peripheral foil seal having an opening covered by a central metal cap.
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  19. Horasart, Theerapong; Bupphasawan, Meatasit; Chaiboon, Chinorot, Disk drive having a stationary plate between disks with grooves adjacent fastener holes.
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  20. Smyth, Nicholas D.; Myers, David K., Disk drive having a top cover channel vented to a central cavity via a hole through a bottom land.
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  21. Smyth, Nicholas D.; Myers, David K., Disk drive having a top cover channel vented to a central cavity via a peripheral clearance gap.
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  22. Pan, Tzong-Shii; Chen, Yih-Jen Dennis; Shum, Wing Chun, Disk drive head gimbal assembly having a flexure tail with a dielectric layer that has regions of lesser thickness.
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  23. Pan, Tzong-Shii; Zhang, Cliff, Disk drive head stack assembly having a flexible printed circuit with bond pads having reduced capacitance.
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  24. Chen, Yih-Jen Dennis; Liu, Yanning; Teo, Kia Moh, Disk drive head suspension tail with a noble metal layer disposed on a plurality of structural backing islands.
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  25. Chen, Yih-Jen Dennis; Liu, Yanning; Teo, Kia Moh, Disk drive head suspension tail with a noble metal layer disposed on a plurality of structural backing islands.
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  26. Chen, Yih-Jen Dennis; Liu, Yanning; Teo, Kia Moh, Disk drive head suspension tail with ground pad outside of bonding region.
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  27. Chen, Yih-Jen D.; Pan, Tzong-Shii, Disk drive head suspension tail with stiffened edge alignment features.
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  28. Chen, Yih-Jen D.; Pan, Tzong-Shii, Disk drive head suspension tail with stiffened edge alignment features.
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  29. Chen, Yih-Jen Dennis; Pan, Tzong-Shii, Disk drive head suspension with a dual dimple and a flexure tongue with a piezoelectric microactuator.
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  30. Lee, Joe C., Disk drive mapping entries of a defect list into clusters.
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  31. Nie, Jianbin; Rigney, Brian P.; Sheh, Edgar D., Disk drive opening spiral crossing window based on DC and AC spiral track error.
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  32. Mei, Lin; Chew, Xiaokun L.; Yeo, Teik EE, Disk drive selecting TPI profile by estimating head geometry.
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  33. Bryant, Lawrence M.; Lifchits, Yakov M.; Weerasooriya, Siri S., Disk drive self servo writing spiral tracks by propagating bursts.
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  34. Kloeppel, Klaus; Ilagan, Ronald G.; Nguyen, Diep L., Disk drive spindle with fluid journal bearing having increased radial clearance in axial end regions.
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  35. Pan, Tzong-Shii, Disk drive system.
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  36. Parker, Joshua; Petersen, Frederic C.; Couture, Shawn P.; Kuniyil, Prabheesh Balakrishnan; Nykanen, Bob A., Disk drive tolerance ring with edge rounding from opposite major faces.
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  37. Sill, Kevin R.; Little, Aaron D., Disk drive with self sealing screw attachment of actuator pivot.
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  38. Gustafson, John R.; Patel, Mukesh, Disk drive with slow acting desiccant.
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  39. Li, Shaoping; Bertero, Gerardo A.; Shang, Changhe; Yi, Ge; Rudy, Steven C.; Hao, Guolun; Leng, Qunwen; He, Shihai; Zhang, Yingbo; Mao, Ming; Wang, Lien-Chang, Electric gaps and method for making electric gaps for multiple sensor arrays.
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  40. Kloeppel, Klaus, Grooved cylindrical seal with increased radial clearance for reduced cost disk drive spindle.
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  41. Le, Lynn Bich-Quy; Hitchner, Thomas J., Hard disk drive enclosure base with a helium sealed gasket.
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  42. Le, Lynn Bich-Quy; Hitchner, Thomas J., Hard disk drive enclosure base with feed through flexure design and accompanying flexure.
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  43. Shum, Wing Chun; Liu, Yanning; Scura, John E., Head gimbal assembly having a flexure tail with cover layer standoff islands.
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  44. Pan, Tzong-Shii; Ho, Shufun, Head stack assembly with a flexible printed circuit having a mouth centered between arms.
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  45. Pan, Tzong-Shii, Head suspension having a flexure tail with a covered conductive layer and structural layer bond pads.
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  46. Casey, Shawn E.; Tian, Jifang; Campbell, Tegan; Li, Hongqi; Flynn, William, Information storage device with a damping insert sheet between a housing bay and a disk drive.
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  47. Hanke, Frederick J., Information-storage device including an oxygen absorbing device.
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  48. Wang,Zhi; Chen,Min; McNab,Robert J.; Cheng,Jenghung, Magnetic disk drive and method for efficiently determining and storing RRO compensation values using a secondary micro-actuator.
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  49. Davidson, Marc; Myers, David K.; Willis, Terrance J., Magnetic head separator connected to a ramp.
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  50. Davidson, Marc; Myers, David K.; Willis, Terrance J., Magnetic head separator fin material to prevent particulate contamination on slider.
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  51. Novotny, Vlad; Berding, Keith R., Magnetic recording drives with active photocatalytic filtration.
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  52. Perlas, Joseph A.; Vangal-Ramamurthy, Jambunathan, Method of imbalance correction using a grooved disk clamp.
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  53. Pan, Tzong-Shii; Magsombol, Fernando A., Method of manufacturing a disk drive head gimbal assembly having a flexure tail with folded bond pads.
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  54. Brunnett, Donald; Bertero, Gerardo A.; Li, Shaoping, Multi-sensor array configuration for a two-dimensional magnetic recording (TDMR) operation.
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  55. Nguyen, Diep L.; Ilagan, Ronald G.; Kloeppel, Klaus, Rotary spindle having a disk clamp bottom land facing and in contact with a shaft top land.
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  56. McNab,Robert J.; Weerasooriya,Siri S., Servo writing a disk drive using a secondary actuator to control skew angle.
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  57. Li, Shaoping; Bertero, Gerardo A.; Mallary, Michael L.; Li, Guanxiong, Shield designed for middle shields in a multiple sensor array.
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  58. Watson, Scott E.; Lee, Yau-Shing; Hitchner, Thomas J.; Myers, David K., Slim form factor disk drive comprising disk drive enclosure having an insular raised region.
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  59. Davidson, Marc; Krishnan, Varuvadivelan; Tan, Siu Ken; Kok, Kin Lim, Sloping transition on a ramp of a hard disk drive.
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  60. Dougherty, Mitchell D., Spindle motor magnet diameter increase above head plane.
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  61. Smyth, Nicholas D.; Nguyen, Daniel T.; Myers, David K., Storage device with a cover supporting portion.
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  62. Smyth, Nicholas D.; Nguyen, Daniel T.; Myers, David K., Storage device with a cover supporting portion.
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  63. Liu, Yanning; Shum, Wing C.; Scura, John E., Suspension assembly having a microactuator electrically connected to a gold coating on a stainless steel surface.
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  64. Liu, Yanning; Shum, Wing Chun; Scura, John E., Suspension assembly having a microactuator electrically connected to a gold coating on a stainless steel surface.
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  65. Seymour, Mark S.; Dougherty, Mitchell D.; Banshak, Jr., Walter G.; Hales, Geoffrey A., Suspension clamp for clamping a disk drive suspension to an actuator arm.
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  66. Moser, Andreas; Gee, Harold H.; Lambert, Steven E.; Mircea, Dragos I., System and method for improving head positioning.
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  67. Moser, Andreas; Gee, Harold H.; Lambert, Steven E.; Mircea, Dragos I., System and method for improving head positioning.
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  68. Tafreshi, Shahriar A.; Lee, Yu-Min, Tamper-evident seals having adhesive-free areas to minimize rework time.
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  69. Heo, Baekho; Weiher, Joshua P., Threaded disk clamping element with step on disk contact surface.
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  70. Tian, Jifang; Yang, Jian; Yang, Qiang, Ultra-thin HDD embedded disk clamp design.
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  71. Anderson, Kent D., Write jog value determination for a disk drive.
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