Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Reexamination Certificate
2007-03-20
2007-03-20
Dinh, Tan (Department: 2627)
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
C369S013060
Reexamination Certificate
active
10165438
ABSTRACT:
The present invention is a method of reading and writing in MAMMOS that uses the edge of the thermal profile for detection of a domain rather than using the tip of the profile. By using the edge, it is possible to detect the position of domains rather than merely the presence of domains. Thus, domain positions are used to store data. By measuring these positions relative to the last domain, more accuracy can be gained. The new scheme is called Domain Position Detection for MAMMOS (DPD-MAMMOS). In DPD-MAMMOS, the information is encoded into the MAMMOS media in the form of the position of the domains rather than the presence of the domains. In this way, each domain stored in the media can contain several bits or possibly bytes of information. Methods of reading and writing information are disclosed.
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Asymmetric Run Length Constraints for Increased Resolution and Power Margin in MAMMOS Readout, C.A. Verschuren, H.W. wan Kesteren Philips Research, Prof. Holstlaan 4, 5656 AA Eindhoven, The Netherlands Mar. 31, 2002.
Signal Processing for the MAMMOS Channel, A.H.J. Immink, M.W. Blum, C.A. Verschuren, H.W. van Kesteren. Philips Research, Prof. Holstlaan 4, 5656 AA Eindhoven, The Netherlands. MORIS 2002 Conference Digest, Paper, We-M2, p. 201-2, May 5, 2002.
Carnegie Mellon University
Dinh Tan
Jones Day
Pencoske Edward L.
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