Method for variable zone layout for information storage disk drive

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5870237
SERIAL NO

08593991

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A magnetic recording system utilizing a plurality of surfaces on a magnetic recording disk with recording zone boundaries established on the respective surfaces of the disk based on the performance characteristic of the read/write head associated with the surface. Since the zone boundaries are established uniquely for the performance of each head rather than by defining the boundaries of all zones for all surfaces in advance based on an assumed performance characteristic of the heads, the zone boundaries on one surface of the disk will not necessarily align with the zone boundaries on another surface of the disk. Similarly, when a plurality of disks are utilized, the zone boundaries will not necessarily be aligned. Improved utilization of the available stroke on the disk drive permits further improvement in recording density.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
MOBILE STORAGE TECHNOLOGY INC.BOULDER, CO69

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chenkin, Nelson Fort Collins, CO 5 139
Emo, Bruce D Niwot, CO 28 595
Wilson, Brian D Louisville, CO 55 598

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (3)
* 4473153 Flexible disk cartridge envelope 101 1982
* 4515272 Rosin bar holder 82 1983
* 4755981 Spindle clamp for removable disks 42 1987
 
BUTLER, STEPHEN, W. (1)
* 4824059 Cushioning device for remote control television equipment, and assembly thereof 90 1988
 
SONY CORPORATION (1)
* 4789975 Apparatus for recording and/or reproducing data signal on or from disk shaped recording medium at a variably selected constant linear velocity 47 1987
 
MOBILE STORAGE TECHNOLOGY INC. (4)
5189576 Rotary inertial latch for disk drive actuator 42 1990
5218253 Spin motor for a hard disk assembly 16 1990
5237472 Rigid disk drive with dynamic head loading apparatus 66 1991
5321560 Embedded servo system for low power disk drives 26 1991
 
HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V. (2)
* 4594622 Track following servo system for a disk file 68 1984
5072318 Disk file with adaptive cancellation of nonrepeatable disk runout 46 1990
 
Western Digital (Singapore) Pte., Ltd. (1)
* 4495533 Disk memory indexing system 25 1982
 
HITACHI GLOBAL STORAGE TECHNOLOGIES JAPAN, LTD. (1)
* 4984100 Magnetic disk apparatus 77 1989
 
HITACHI, LTD. (2)
* 4497003 Disc positioning device 19 1982
5014142 Magnetic disk apparatus with head supporting structures of different proper oscillations 26 1989
 
Mitsubishi Plastics Industries Limited (1)
* 4655348 Magnetic recording disc-jacket assembly 28 1984
 
GUZIK TECHNICAL ENTERPRISES (2)
* 4627288 Bearing unloading mechanism for disc clamping unit 23 1985
* 4958839 Disc clamp employing resilient cone for spreading balls 50 1988
 
KABUSHIKI KAISHA TOSHIBA (3)
* 4641294 Method and apparatus for performing a memory operation on a fixed length block of data on a memory disk 32 1984
* 4907214 Eccentricity correction apparatus for an optical disk device 30 1986
* 4819103 Apparatus for reproducing data from magnetic recording medium 28 1987
 
Drivetec, Inc. (1)
* 4539614 Flexible magnetic disk clamping an injector mechanism 35 1983
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (6)
* 4396960 Servo track following control for magnetic heads, and method for compensating uniform disturbance variables 15 1981
* 4413251 Method and apparatus for generating a noiseless sliding block code for a (1,7) channel with rate 2/3 73 1981
* 4578723 Head positioning system with automatic gain control 42 1983
* 4839756 Apparatus for read/write head loading and unloading in a data recording disk file 44 1988
5235585 Reassigning defective sectors on a disk 193 1991
5264975 Magnetic disk storage device with the base provided by an electronic module substrate 49 1992
 
Firma Carl Freudenberg (1)
* 4724501 Jacket for floppy disk 25 1985
 
YE DATA INC. (1)
* 4705279 Device for clamping a flexible disk 38 1986
 
HEWLETT-PACKARD COMPANY (3)
* 4823212 Sampled servo code format and system for a disc drive 105 1986
5041926 Track position syncopation cancellation in a disk drive 39 1989
5036416 Aerodynamically releasable lock for a disk file actuator assembly 54 1990
 
E/M CORPORATION (1)
* 4901173 Apparatus for coupling record disk to disk drive 82 1988
 
U.S. PHILIPS CORPORATION (3)
* 4443874 Information-disc cassette 43 1982
* 4649531 Apparatus for centering, aligning and clamping an optical disc 28 1985
* 4799209 Clamping device for clamping an optical disc onto a drive spindle 29 1987
 
ALPS ELECTRIC CO., LTD. (4)
* 4747002 Disk clamping mechanism 24 1986
* 4760477 Disk clamping mechanism for a disk driving device 20 1986
* 4876618 Method for detecting zero track 10 1987
5075804 Management of defect areas in recording media 85 1989
 
Magnum Division of Tandon Corporation (1)
* 4409629 Mechanism for centering and clamping a floppy disc 32 1981
 
RODIME PLC ROTHESAY HOUSE, ROTHESAY PLACE, GLENROTHES, KY7 6PW, FIFE SCOTLAND (1)
* 4568988 Micro hard-disk drive system 78 1984
 
KAMAN AEROSPACE CORPORATION (1)
* 4870703 Magnetic disc memory unit 74 1988
 
STUFF TECHNOLOGY PARTNERS II, LTD. (1)
* 4502136 Apparatus for centering and clamping an information recording disk in a data storage device 29 1983
 
THE CIT GROUP BUSINESS CREDIT INC. (1)
5023736 Magnetic latch for disk drive actuator 64 1989
 
MITSUBISHI DENKI KABUSHIKI KAISHA (2)
* 4772972 Magnetic disc apparatus with head assembly aligning mechanism 23 1987
5212604 Method and apparatus for processing positioning signals in a record 12 1990
 
Memron, Inc. (1)
* 4568994 Warp resistant-dimensionally stable jacket for magnetic recording disk 26 1983
 
Nippon T & T (1)
* 4833665 Information recording control system reusing a defective area 51 1987
 
MATSUSHITA GRAPHIC COMMUNICATION SYSTEMS, INC. (1)
5319627 Method for managing a defect in an optical disk by assigning logical addresses based upon cumulative number of defects in the disk 84 1991
 
SANKYO SEIKI MFG. CO., LTD. (1)
* 4943748 Motor with cup-shaped rotor having cylindrical portions of different diameter 40 1989
 
RODIME, PLC. (1)
* 4518904 Stepper motor control for data disk system 40 1984
 
XEROX CORPORATION (1)
* 4827364 Self-compensating media centering and clamping mechanism for floppy disk drives 18 1984
 
SAGEM SA (1)
* 4752848 Spacing device for magnetic recording and/or reading head-holder pads in a disc memory apparatus 36 1986
 
OPTICAL STORAGE INTERNATIONAL HOLLAND, A CORP. OF THE KINGDOM OF THE NETHERLANDS (1)
5023857 Optical information storage apparatus including eccentricity compensator 23 1988
 
QUANTUM CORPORATION (1)
* 4772974 Compact head and disk assembly 60 1987
 
Amcodyne Incorporated (2)
* 4535374 Whitney-type head loading/unloading apparatus 120 1982
* 4628379 Disk runout compensator 44 1984
 
DELAWARE CAPITAL FORMATION, INC. (1)
* 4530020 Self-timed runout correction pattern 42 1984
 
SEAGATE TECHNOLOGY, SCOTTS VALLEY, CA. A CORP. OF CA. (1)
* 4716480 Carriage latch for a disc drive 31 1986
 
CONNER PERIPHERALS (1)
5025335 Architecture for 21/2 inch diameter single disk drive 173 1989
 
NEC CORPORATION (5)
* 4658308 Method and apparatus for retracting head and braking motor of a disc drive device 46 1986
* 4894734 Method and apparatus for constant density recording 61 1987
4999720 Zone density sector counter 24 1989
5257143 Method and apparatus for positioning head of disk drive using zone-bit-recording 60 1991
5339207 Servo system for providing increased recording density and improved operation of the AGC circuitry 39 1992
 
SEAGATE TECHNOLOGY LLC (17)
* 4679102 Method and means for parking read/write heads in a disc drive using the back-EMF of the spindle motor to operate a stepper motor 56 1985
* 4725907 Carriage latch for a disc drive incorporating inertial lock-up 37 1986
* 4803580 Double-gap magnetoresistive head having an elongated central write/shield pole completely shielding the magnetoresistive sensor strip in the read gap 81 1987
* 4799112 Method and apparatus for recording data 70 1987
* 4979056 Disk drive system controller architecture 47 1987
* 4864443 Disc clamping device 49 1987
* 4965684 Low height disk drive 113 1988
* 4933785 Disk drive apparatus using dynamic loading/unloading 215 1988
* 4969059 Offset nulling system for computer disk drives 54 1988
* 4977472 Servo address system 58 1988
* 4945311 Electronically variable equalizer 22 1988
4996617 Disc drive safety latch using shape memory metals 45 1989
5050016 Disk drive servo system using gain limited high-frequency track-following compensator 59 1989
* 4979055 Disk drive system controller architecture utilizing embedded real-time diagnostic monitor 91 1989
5025336 Disk drive apparatus 139 1989
5023737 Disc drive slider lifter using shape memory materials 49 1990
5182682 Sectored servo disk formatting 20 1992
 
FORESTLANE CO., LTD. (1)
* 4379316 Read/write head carriage assembly for a floppy disk drive 32 1981
 
Konica Corporation (1)
* 4825310 Method and apparatus for recording servo synchronization information 23 1986
 
CAMBRIAN CONSULTANTS INC. (2)
* 4424543 Method and apparatus for recording transducer positioning information 88 1981
* 4530019 Servo pattern 75 1984
 
SHARP KABUSHIKI KAISHA (2)
* 4920528 Method of disk recording using alternative recording tracks 13 1987
* 4920437 Disc clamping device 18 1987
 
Tokyo Shibaura Denki Kabushiki Kaisha (2)
* 4530018 Information recording/reproducing apparatus with disk having sections of different angular velocity 46 1982
* 4631606 System for detecting the position of a read-write head on a disk recording medium having servo sectors with three or more servo patterns 47 1984
 
DMA SYSTEMS (1)
* 4663682 Apparatus for loading and unloading a magnetic head assembly on a magnetic recording surface 72 1983
 
RS PATENT HOLDING CORP. (2)
* 4638383 Micro hard-disk drive system 60 1985
5034837 Magnetic disk drive incorporating a magnetic actuator lock and a very small form factor 146 1989
 
PERIPHERAL TECHNOLOGY INC. (1)
* 4786995 Automatic head retract system for disk drive 70 1986
 
Syquest Technology, Inc. (3)
* 4683506 Disc drive arrangement for a hard disc cartridge with a read/write head retract mechanism 87 1983
* 4630190 Servo control apparatus for a disk drive 37 1984
* 4920462 Disc drive fine servo velocity control and method for head positioning relative to a disc 48 1988
 
Pioneer Electronic Corporation (3)
* 4734813 Clamper holding mechanism for positioning an information recording disk 21 1985
* 4829501 Clamper for disk player 29 1988
* 4841517 Disk clamping device 26 1988
 
CANON DENSHI KABUSHIKI KAISHA (1)
* 4736358 Recording medium clamping apparatus 26 1986
 
RESEARCH INVESTMENT NETWORK, INC. (1)
5001700 Disk clamp and centering apparatus for a beam addressable disk drive system 37 1989
 
MAXTOR CORPORATION (10)
* 4516177 Rotating rigid disk data storage device 77 1983
* 4647997 Aerodynamic latch for disk file actuator 75 1985
* 4669004 High capacity disk file with embedded sector servo 159 1986
* 4783705 High capacity disk file with embedded sector servo and SCSI interface 120 1987
* 4825321 Modular unitary disk file subsystem having increased data storage capacity 34 1987
* 4858034 Modular unitary disk file subsystem with differing density zones 40 1988
5041924 Removable and transportable hard disk subsystem 165 1988
5170299 Edge servo for disk drive head positioner 102 1990
5027241 Data head load beam for height compacted, low power fixed head and disk assembly 176 1990
5384671 PRML sampled data channel synchronous servo detector 172 1993
 
EASTMAN KODAK COMPANY (3)
* 4714967 Binarily related variable rate recorder 30 1985
* 4750059 Data recording format for an information-bearing disk 50 1986
* 4780866 Method and apparatus combining an information-bearing disk and a disk drive mechanism 32 1988
 
Universal Pioneer Corporation (1)
* 4510592 Disk clamping device 30 1984
 
UNISYS CORPORATION (1)
* 4420830 Disc mounting and centering device 44 1981
 
XEBEC (1)
* 4703371 Disk drive formatting 15 1985
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (3)
* 4873679 Optical information recording disk and optical information recording disk apparatus 83 1987
* 4984230 Rewritable optical disk with defective-sector substitution arrangement and optical information recording and reproducing system 82 1989
5237553 Data recording and reproducing apparatus having a plurality of operating modes 238 1991
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
6418512 Method and system for reporting disk utilizations for disk subsystems 0 1999
 
Other [Check patent profile for assignment information] (1)
* 2004/0136,104 Vertical track zoning for disk drives 20 2003
 
MAXTOR CORPORATION (4)
* 7283316 Vertical track zoning for disk drives 18 2003
* 2006/0018,051 Vertical track zoning for disk drives 5 2003
7362529 Disk drive with variable density data tracks 16 2006
* 2006/0227,445 DISK DRIVE WITH VARIABLE DENSITY DATA TRACKS 9 2006
 
WESTERN DIGITAL TECHNOLOGIES, INC. (16)
7209310 Disk drive identifying starting track by performing multiple load operations 20 2005
7436610 Disk drive employing different zone boundaries across disk surfaces 117 2005
8134798 Disk drive maintaining a substantially constant host transfer rate when reading data from varying data rate data tracks across multiple disk surfaces 108 2005
7872822 Disk drive refreshing zones based on serpentine access of disk surfaces 117 2007
8174780 Disk drive biasing a refresh monitor with write parameter of a write operation 112 2007
7945727 Disk drive refreshing zones in segments to sustain target throughput of host commands 111 2007
* 2009/0027,799 DISK DRIVE REFRESHING ZONES IN SEGMENTS TO SUSTAIN TARGET THROUGHPUT OF HOST COMMANDS 6 2007
7688540 Disk drive selecting TPI profile by estimating head geometry 118 2007
7982993 Disk drive employing different servo TPI to data TPI ratios across the disk surface 117 2008
8116020 Disk drive mapping entries of a defect list into clusters 112 2009
8031423 Disk drive generating actual data TPI profile by combining segments of predetermined data TPI profiles 113 2009
* 7974029 Disk drive biasing refresh zone counters based on write commands 116 2009
* 2011/0026,159 DISK DRIVE BIASING REFRESH ZONE COUNTERS BASED ON WRITE COMMANDS 5 2009
8630052 Disk drive calibrating radial density then adjusting linear density to balance off-track read capability 107 2011
9082458 Data storage device balancing and maximizing quality metric when configuring arial density of each disk surface 7 2014
9230605 Data storage device maximizing areal density based on a target quality metric 0 2014
 
SEAGATE TECHNOLOGY INTERNATIONAL (2)
* 8279547 Method of setting zone layout of recording medium, and apparatus using method 0 2010
* 2011/0080,820 METHOD OF SETTING ZONE LAYOUT OF RECORDING MEDIUM, AND APPARATUS USING METHOD 2 2010
 
SEAGATE TECHNOLOGY LLC (9)
* 5999352 Variable bits per inch recording 12 1997
6560052 Implementation of variable bit density recording in storage disc drives 31 1999
* 6446156 Proposal of capacity tuning in the production process of storage disc drives 13 1999
6633442 Adjusting track density and bit density to provide limited excess capacity in a storage device 9 2001
6751036 Tuning track density for data storage device 20 2001
7046471 Method and apparatus for utilizing variable tracks per inch to reduce bits per inch for a head 24 2003
7529054 Adaptive recording band expansion methodology 1 2004
* 2005/0231,842 Adaptive recording band expansion methodology 4 2004
* 7589925 Method of accessing variable density data tracks in a disk drive 10 2006
 
SAMSUNG ELECTRONICS CO., LTD. (1)
* 6084732 Method of selecting zone lay-out of a hard disk drive on basis of head/recording medium performance 10 1997
 
TEXAS INSTRUMENTS INCORPORATED (1)
6795264 LBA tracking for system data management 6 2001
 
KABUSHIKI KAISHA TOSHIBA (2)
7656598 Method and apparatus for setting storage capacity of recording media 4 2006
* 2007/0217,054 Method and apparatus for setting storage capacity of recording media 0 2006
 
TOSHIBA STORAGE DEVICE CORPORATION (6)
7317587 Magnetic disk devices with data recording areas set separately for each device 6 2005
* 2005/0134,994 Magnetic disk devices with data recording areas set separately for each device 1 2005
7620771 Magnetic disk apparatus, method for adjusting performance of magnetic disk apparatus, and method for accessing magnetic disk 0 2005
* 2006/0215,294 Magnetic disk apparatus, method for adjusting performance of magnetic disk apparatus, and method for accessing magnetic disk 1 2005
7706091 Magnetic disk devices with data recording areas set separately for each device 4 2007
* 2007/0171,560 Magnetic disk devices with data recording areas set separately for each device 2 2007
* Cited By Examiner