Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Reexamination Certificate
2006-04-11
2006-04-11
Neyzari, Ali (Department: 2656)
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
C369S013490, C369S275300
Reexamination Certificate
active
07027365
ABSTRACT:
The present invention relates to magneto-optical recording technique whereby improved domain expansion reading is achieved. A mark region is recorded as a sub-mark portion and an adjacent sub-space portion, wherein the length of the sub-mark portion is set to be less than or equal to the length of the sub-space portion. Stray field variations due to different runlengths of the recording data can thus be equalized even for short channel bit lengths, while the resolution and/or power margin is improved.
REFERENCES:
patent: 5991252 (1999-11-01), Kimura et al.
patent: 6314061 (2001-11-01), Miyaoka
patent: 6809994 (2004-10-01), Verschuren
patent: 0481786 (1992-04-01), None
Hitachi Waxell Co., “Method of Recording of Optomagnetic Recording Medium and Recording Device”, Patent Application 2000-292, Jan. 5, 2000.
Patent Abstracts of Japan, Takagi Naoyuki: “Recording Method For Magneto-Optical Recording Medium and Device Therefor” Publication No. 11213473, Aug. 6, 1999, Application No. 10011340, Jan. 23, 1998.
Patent Abstracts of Japan, Miyaoka Yasuyuki: “Magneto-Optical Recording and Reproducing Method And Its Device” Publication No. 2000200450, Jul. 18, 2000, Application No. 11218906, Aug. 2, 1999.
Blom Paulus Wilhelmus Maria
Horikx Jeroen Jan Lambertus
Van Kesteren Hans Willem
Van Rompaey Bart
Verschuren Coen Adrianus
Goodman Edward W.
Koninklijke Philips Electronics , N.V.
Neyzari Ali
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