Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2009-05-28
2011-12-13
Tzeng, Fred (Department: 2627)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
Reexamination Certificate
active
08077424
ABSTRACT:
A magnetic device includes a read sensor, a writer and a synchronization sensor. The magnetic device is configured for writing information to and reading information from a magnetic medium that includes a plurality of discrete magnetic bits. The writer includes a write element, a first return element magnetically coupled to the write element, and a second return element magnetically coupled to the write element. The write element is positioned in between the first and second return elements. The synchronization sensor is located adjacent to the write element of the writer in a closely spaced arrangement, and is configured to generate a signal as a function of a sensed magnetic bit. The signal is used to position the writer element relative to the sensed magnetic bit.
REFERENCES:
patent: 4912585 (1990-03-01), Belser et al.
patent: 5218452 (1993-06-01), Kondo et al.
patent: 5479696 (1996-01-01), McNeil
patent: 5784224 (1998-07-01), Rottmayer et al.
patent: 5956216 (1999-09-01), Chou
patent: 5999360 (1999-12-01), Meyer et al.
patent: 6104562 (2000-08-01), Ottesen et al.
patent: 6282056 (2001-08-01), Feng et al.
patent: 6754017 (2004-06-01), Rettner et al.
patent: 6920062 (2005-07-01), Parkin
patent: 6947235 (2005-09-01), Albrecht et al.
patent: 6956707 (2005-10-01), Ottesen et al.
patent: 7027263 (2006-04-01), Ottesen et al.
patent: 7133229 (2006-11-01), Semba
patent: 7262931 (2007-08-01), Nakamura et al.
patent: 7324294 (2008-01-01), Moser
patent: 2002/0071208 (2002-06-01), Batra et al.
patent: 2003/0107833 (2003-06-01), Rettner et al.
patent: 2006/0092541 (2006-05-01), Moser
patent: 2006/0103968 (2006-05-01), Jurneke
patent: 2008/0085425 (2008-04-01), Girt et al.
patent: 2009/0002867 (2009-01-01), Gage et al.
patent: 2009/0002868 (2009-01-01), Mallary et al.
patent: 2009/0195916 (2009-08-01), Chauhan et al.
patent: 2009/0316301 (2009-12-01), van de Veerdonk et al.
patent: 2010/0033872 (2010-02-01), Xi et al.
patent: 2010/0110575 (2010-05-01), Gao
patent: 2010/0246048 (2010-09-01), Ranmuthu
patent: 1522991 (2005-04-01), None
patent: 2003281701 (2003-10-01), None
patent: WO2008107988 (2008-09-01), None
Zhu et al., “Recording, Noise, and Servo Characteristics of Patterned Thin Film Media” IEEE Transactions on Magnetics vol. 26, No. 1, pp. 23-29 (Jan. 2000).
Lin et al., “Spin Stand Study of Density Dependence of Switching Proprieties in Patterned Media” IEEE Transactions on Magnetics vol. 36, No. 5, pp. 2999-3001 (Sep. 2000).
Lohau et al., “Writing and reading perpendicular magnetic recording media patterned by a focused ion beam” Applied Physics Letters vol. 78, No. 7, pp. 990-992 (Feb. 12, 2000).
International Search Report and Written Opinion from PCT Patent Application No. PCT/US2010/036561, filed May 28, 2010.
Chen Yonghua
Gao Kaizhong
Ladas & Parry LLP
Seagate Technology LLC
Tzeng Fred
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