Method and apparatus for positioning a dual element magnetoresis

Details Method and apparatus for positioning a dual element magnetoresis Method and apparatus for positioning a dual element magnetoresis

1998-06-10

2000-11-28

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7701, 360 7703, G11B 2102

Patent

active

061543357

ABSTRACT:
The present invention is a method and apparatus for positioning a dual element magnetoresistive (MR) head relative to a storage medium in a storage device. The MR head has first and second MR elements. The storage medium is mounted in the storage device to allow relative movement between the MR head and the storage medium. The storage medium includes servo information provided to induce first and second thermal responses in the MR elements. A controller is coupled to the MR head and controls the relative movement between the MR head and the storage medium using the first and second thermal responses in the MR elements.

REFERENCES:
patent: 3416373 (1968-12-01), Havens
patent: 3918091 (1975-11-01), Walraven et al.
patent: 4430010 (1984-02-01), Zrenner et al.
patent: 4485337 (1984-11-01), Sandusky
patent: 4498146 (1985-02-01), Martinez
patent: 4532802 (1985-08-01), Yeack-Scranton et al.
patent: 4639906 (1987-01-01), Goto
patent: 4647992 (1987-03-01), Vinal
patent: 4669011 (1987-05-01), Lemke
patent: 4691259 (1987-09-01), Imakoshi et al.
patent: 4712144 (1987-12-01), Klaassen
patent: 4747698 (1988-05-01), Wickramsinghe et al.
patent: 4762427 (1988-08-01), Hori et al.
patent: 4777544 (1988-10-01), Brown et al.
patent: 4802033 (1989-01-01), Chi
patent: 4853810 (1989-08-01), Pohl et al.
patent: 4914398 (1990-04-01), Jove et al.
patent: 4931887 (1990-06-01), Hegde et al.
patent: 4949036 (1990-08-01), Bezinque et al.
patent: 4959599 (1990-09-01), Nakadai et al.
patent: 5032935 (1991-07-01), Jove et al.
patent: 5054936 (1991-10-01), Fraden
patent: 5057785 (1991-10-01), Chung et al.
patent: 5070495 (1991-12-01), Bletscher, Jr. et al.
patent: 5079663 (1992-01-01), Ju et al.
patent: 5084791 (1992-01-01), Thanos et al.
patent: 5130866 (1992-07-01), Klaassen et al.
patent: 5168413 (1992-12-01), Coker et al.
patent: 5185681 (1993-02-01), Volz et al.
patent: 5212677 (1993-05-01), Shimote et al.
patent: 5220476 (1993-06-01), Godwin et al.
patent: 5233482 (1993-08-01), Galbraith et al.
patent: 5255136 (1993-10-01), Machado et al.
patent: 5301080 (1994-04-01), Ottesen et al.
patent: 5321559 (1994-06-01), Nguyen et al.
patent: 5325244 (1994-06-01), Takano et al.
patent: 5327298 (1994-07-01), Ottesen et al.
patent: 5345342 (1994-09-01), Abbott et al.
patent: 5367409 (1994-11-01), Ottesen et al.
patent: 5377058 (1994-12-01), Good et al.
patent: 5384514 (1995-01-01), Smith et al.
patent: 5388014 (1995-02-01), Brug et al.
patent: 5402278 (1995-03-01), Morita
patent: 5418770 (1995-05-01), Ide et al.
patent: 5424885 (1995-06-01), McKenzie et al.
patent: 5430706 (1995-07-01), Utsunomiya et al.
patent: 5455730 (1995-10-01), Dovek et al.
patent: 5527110 (1996-06-01), Abraham et al.
patent: 5739972 (1998-04-01), Smith et al.
patent: 5806978 (1998-09-01), Abraham et al.
patent: 5810477 (1998-09-01), Abraham et al.
patent: 5850374 (1998-12-01), Abraham et al.
Bellamy, L. et al., "Disk Drive Motor Speed Control", IBM Technical Disclosure Bulletin, 23(11):5163 (Apr. 1981).
Dushkes, S. et al., "Head Crash Detector", IBM Technical Disclosure Bulletin, 13(12):3585 (May 1971).
Fontana, R. et al., "Disk Asperity Detector", IBM Technical Disclosure Bulletin, 26(3A): 1278-1280 (Aug. 1983).
Gorter, F. et al, "Magnetoresistive Reading of Information", IEEE Transactions on Magnetics,MAG-10(3):899-902 (Sep. 1974).
Gruss, E. et al., "Servo System for Magnetic Recording Based on Time Comparison", IBM Technical Disclosure Bulletin, 23(2):787-789 (Jul. 1980).
Kerwin, G. et al., "Fast Offset Recovery for Thermal Asperity Data Recovery Procedure", IBM Technical Disclosure Bulletin, 34(11):217-219 (Apr. 1992).
Klaassen, K., "Magnetic Recording Channel Front-Ends", IBM Research Report, pp. 1-6, (Nov. 1, 1991).
Li, Y. et al., "The Determination of Flash Temperature in Intermittent Magnetic Head/Disk Contacts Using Magnetoresistive Heads", Journal of Tribology, 115(1):179-184 (Jan. 1993).
Lin, C., "Techniques for the Measurement of Air-Bearing Separation-A Review", IEEE Transactions on Magnetics, MAG-9(4):673-677 (Dec. 1973).
Morita, O. et al., "Magnetization Characteristics of Pre-Embossed Patterns on the Molded Plastic Rigid Disk".
Research Disclosure, "Asperity Knee Detection Using Harmonic Ratio Flyheight", Emsworth Design, Inc. 323:190 (Mar. 1991).
Talke, F. et al., "Surface Defect Studies of Flexible Media Using Magnetoresistive Sensors, ", IEEE Transactions on Magnetics, MAG-11(5):1188-1190 Sep. 1975).
Tanaka, S. et al. "Characterization of Magnetizing Process for Pre-Embossed Servo Pattern of Plastic Hard Disks", IEEE Transactions on Magnetics , 30(6):4209-4211 (Nov. 1994).
Watanabe, K. et al., "Demonstration of Track Following Technic Based on Discrete Track Media", pp. 1-3.
Watanabe, K. et al., "Demonstration of Track Following Technique Based on Discrete Track Media", IEEE Transactions on Magnetics, 29(6):4030-4032 (Nov. 1993).
Yada, H. et al, "High Areal Density Recording Using an MR/Inductive Head and Pre-Embossed Rigid Magnetic Disk", IEEE Transactions on Magnetics, 30(2):404-409 (Mar. 1994).

Affiliated with

Also associated with

Rating

Method and apparatus for positioning a dual element magnetoresis does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for positioning a dual element magnetoresis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for positioning a dual element magnetoresis will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1731802