Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Reexamination Certificate
2004-06-10
2008-10-07
Dinh, Tan X (Department: 2627)
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
C369S013550
Reexamination Certificate
active
07433276
ABSTRACT:
A domain wall displacement detection (DWDD) system magneto-optical recording medium forms a land3and a groove4as signal recording areas. When a domain wall displacement improvement is changed by irradiating annealing light La on a boundary wall surface5between the land3and the groove4, the position of this annealing light is detected by an annealing light scanning position displacement detecting wobbling portion7formed at a portion extending along the recording track length direction of the boundary wall surface5. The annealing light scans this wobbling portion7, whereby a vibration amplitude of a cycle corresponding to the cycle of the wobbling portion7is produced to thereby detect and monitor the miniscule change of the scanning position of the annealing light with high sensitivity. Thus, in the DWDD system magneto-optical recording medium, the scanning position of the annealing light at the boundary wall surface between the land3and the groove4can be detected with high sensitivity.
REFERENCES:
patent: 6128273 (2000-10-01), Horie et al.
patent: 6265062 (2001-07-01), Shiratori
patent: 6716489 (2004-04-01), Miyaoka
patent: 7313055 (2007-12-01), Hiroki
patent: 2002/0058120 (2002-05-01), Uchida et al.
patent: 2003/0202430 (2003-10-01), Nishikawa
patent: 1 408 494 (2004-04-01), None
patent: 08-147777 (1996-06-01), None
patent: 2002-319198 (2002-10-01), None
patent: 2002-319201 (2002-10-01), None
patent: WO-01/93259 (2001-12-01), None
Miki, et al—XPO02462560 “Gbit/in<2> recording on a DWDD disc using a land/groove substrate with a red laser enabled by a side-wall annealing process” Database Inspect [Online] The Institute of Electrical Engineers, Stevenage—Sep. 16, 2003.
Miki et al—XPO02462559—“15 Gbit/in<2> recording on a DWDD disc using a land/groove substrate with a red laser enabled by a side-wall annealing process” Proceedings of the SPIE- the International Society for Optical Ingineering SPIE-INT-SOC> Opt. ENF USA, vol. 5069, No. 1 Sep. 16, 2003.
Fujita Goro
Miki Takeshi
Dinh Tan X
Kananen Ronald P.
Rader & Fishman & Grauer, PLLC
Sony Corporation
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