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公开(公告)号：AT207233T
公开(公告)日：2001-11-15
申请号：AT94480145
申请日：1994-11-24
Applicant: IBM
Inventor： AOYAGI AKIHIKO , BOUTAGHOU ZINE-EDDINE , KHANNA VIJAYESHWAR DAS , KUMAR SURESH , SRI-JAYANTHA MUTHUTHAMBY
Abstract: A technique for preventing damage to ball bearings in small form factor device is disclosed where the device has at least one crash stop ring disposed about the shaft and inside the rotor of a device. The ring is dimensioned to permit only a small amount of movement of the rotor relative to the shaft. The permitted movement is less than the minimum movement which would cause damage to the elements of the ball bearing.
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公开(公告)号：ES2162852T3
公开(公告)日：2002-01-16
申请号：ES94480145
申请日：1994-11-24
Applicant: IBM
Inventor： AOYAGI AKIHIKO , BOUTAGHOU ZINE-EDDINE , KHANNA VIJAYESHWAR DAS , KUMAR SURESH , SRI-JAYANTHA MUTHUTHAMBY
Abstract: A technique for preventing damage to ball bearings in small form factor device is disclosed where the device has at least one crash stop ring disposed about the shaft and inside the rotor of a device. The ring is dimensioned to permit only a small amount of movement of the rotor relative to the shaft. The permitted movement is less than the minimum movement which would cause damage to the elements of the ball bearing.
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公开(公告)号：DE69428670D1
公开(公告)日：2001-11-22
申请号：DE69428670
申请日：1994-11-24
Applicant: IBM
Inventor： AOYAGI AKIHIKO , BOUTAGHOU ZINE-EDDINE , KHANNA VIJAYESHWAR DAS , KUMAR SURESH , SRI-JAYANTHA MUTHUTHAMBY
Abstract: A technique for preventing damage to ball bearings in small form factor device is disclosed where the device has at least one crash stop ring disposed about the shaft and inside the rotor of a device. The ring is dimensioned to permit only a small amount of movement of the rotor relative to the shaft. The permitted movement is less than the minimum movement which would cause damage to the elements of the ball bearing.
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公开(公告)号：CA2089788A1
公开(公告)日：1993-10-11
申请号：CA2089788
申请日：1993-02-18
Applicant: IBM
Inventor： OTTESEN HAL H , SHARMA ARUN , SRI-JAYANTHA MUTHUTHAMBY
Abstract: A method for predicting and avoiding data errors by predicting disk drive read-write inhibit requirements in response to at least two parameters including a head position error and velocity with respect to the track centerline. A write or read inhibit signal is generated in response to selected combinations of these parameters to minimize soft read errors arising from track misregistration and to avoid hard errors arising from overwriting data recorded in an adjacent track. The read and write inhibit strategy is described as a pair of linguistic control rules suitable for implementation in a Fuzzy Logic Controller.
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Patent Agency Ranking
公开(公告)号：DE69428670T2
公开(公告)日：2002-07-11
申请号：DE69428670
申请日：1994-11-24
Applicant: IBM
Inventor： AOYAGI AKIHIKO , BOUTAGHOU ZINE-EDDINE , KHANNA VIJAYESHWAR DAS , KUMAR SURESH , SRI-JAYANTHA MUTHUTHAMBY
Abstract: A technique for preventing damage to ball bearings in small form factor device is disclosed where the device has at least one crash stop ring disposed about the shaft and inside the rotor of a device. The ring is dimensioned to permit only a small amount of movement of the rotor relative to the shaft. The permitted movement is less than the minimum movement which would cause damage to the elements of the ball bearing.
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公开(公告)号：CA2089788C
公开(公告)日：1996-10-08
申请号：CA2089788
申请日：1993-02-18
Applicant: IBM
Inventor： OTTESEN HAL HJALMAR , SHARMA ARUN , SRI-JAYANTHA MUTHUTHAMBY
Abstract: A method for predicting and avoiding data errors by predicting disk drive read-write inhibit requirements in response to at least two parameters including a head position error and velocity with respect to the track centerline. A write or read inhibit signal is generated in response to selected combinations of these parameters to minimize soft read errors arising from track misregistration and to avoid hard errors arising from overwriting data recorded in an adjacent track. The read and write inhibit strategy is described as a pair of linguistic control rules suitable for implementation in a Fuzzy Logic Controller.
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公开(公告)号：CA2061330A1
公开(公告)日：1992-10-20
申请号：CA2061330
申请日：1992-02-17
Applicant: IBM
Inventor： CHENG DAVID C , MAKANSI TAREK , SRI-JAYANTHA MUTHUTHAMBY
IPC: G11B5/09 , G05F5/00 , H01H9/54 , H02P8/00 , H02P8/12 , H02P13/00 , H03K17/04 , H03K17/64 , H03K17/66 , H03K17/687 , H03K17/695 , H01F15/18
Abstract: SA9-90-072 INDUCTIVE CURRENT SWITCHING SYSTEM AND METHOD of the Disclosure An inductor is connected in parallel with a capacitor. A first and a second current source provide current to the inductor in opposite directions. Rapid current switching in the inductor is achieved by allowing the inductor and capacitor to resonate in a time period between the application of current from the first and second current source.
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公开(公告)号：SG47369A1
公开(公告)日：1998-04-17
申请号：SG1995002209
申请日：1995-01-20
Applicant: IBM
Abstract: In accordance with the invention, in a direct access storage device having a head for interaction with a storage medium and a moving actuator on which the head is mounted, the improvement comprises a compound bearing system for the actuator, said bearing system including a first bearing of low friction for small movements of the actuator; and a second bearing of higher friction for coarse movements of the actuator. The storage medium is preferably a rotating magnetic disk having a series of concentric circular tracks. A single servo system drives the actuator so that the head follows a selected track with motion of the first bearing, and movement of the head to a new track causes motion of the second bearing. Preferably the first bearing is a flex bearing and the second bearing is a ball bearing.
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公开(公告)号：CA2141283A1
公开(公告)日：1995-07-29
申请号：CA2141283
申请日：1995-01-27
Applicant: IBM
Inventor： AOYAGI AKIHIKO , BOUTAGHOU ZINE-EDDINE , DAS KHANNA VIJAYESHWAR , KUMAR SURESH , SRI-JAYANTHA MUTHUTHAMBY
Abstract: A technique for preventing damage to ball bearings in small form factor device is disclosed where the device has at least one crash stop ring disposed about the shaft and inside the rotor of a device. The ring is dimensioned to permit only a small amount of movement of the rotor relative to the shaft. The permitted movement is less than the minimum movement which would cause damage to the elements of the ball bearing.
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