High density analog recording using write symbols having...

Dynamic information storage or retrieval – Binary pulse train information signal – Having specific code or form generation or regeneration...

Reexamination Certificate

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C369S047170

Reexamination Certificate

active

07002890

ABSTRACT:
A method of recording data on a recording medium includes mapping the data to a set of write symbols wherein each write symbol represents more than one bit of the data. The set of write symbols is defined by defining a set of variable write parameters; generating a plurality of candidate write symbols that specify different values for the variable write parameters; generating a plurality of readout waveforms produced by the plurality of candidate write symbols; analyzing the readout waveforms to determine desired set of readout waveforms; and selecting selected ones of the plurality of candidate write symbols that correspond to the desired readout waveforms to be included in the set of write symbols. The data is written to the medium using the write symbols.

REFERENCES:
patent: 4703469 (1987-10-01), Pettigrew et al.
patent: 5121260 (1992-06-01), Asakawa et al.
patent: 5126990 (1992-06-01), Efron et al.
patent: 5537381 (1996-07-01), Fuji
patent: 5576906 (1996-11-01), Fisher et al.
patent: 5675569 (1997-10-01), Yamaguchi et al.
patent: 5790715 (1998-08-01), Iizuka
patent: 5802112 (1998-09-01), Ganter
patent: 5978333 (1999-11-01), Kobayashi et al.
patent: 5995305 (1999-11-01), McNeil et al.
patent: 6078451 (2000-06-01), Ioki
patent: 6195215 (2001-02-01), Yanagimoto et al.
patent: 6201839 (2001-03-01), Kavcic et al.
G. Bouwhuis et al, Principles of Optical Disc Systems, Adam Hilger Bristol (1985) pg. 237-238, no month no day.
S. Kobayashi et al, High Density Optical Disk Recording by Pit Edge Modulation, Tech. Dig. Of Optical Data Storage Conference, pg. 130 (1994), no month no day.
M. Arai, et al, Multi-level Partial Response recording in MO, Tech. Dig. Of Joint MORIS/ISOM, p. 32 (1997), no month no day.
S. Spielman et al, “Using pit-depth modulation to increase capcaity and data transfer rate in optical discs”, Proc. SPIE, vol. 3109, pp. 98 (1997), no month no day.
T. Ohta et al, “Overview and the Future of Phase-Change Optical Disk Technology”, Jpn. J. Appl. Phys. vol. 39, p. 770 (2000), no month no day.
O'Neill, M., et al., “Multi-level Data Storage System using Phase-change Optical Discs”, Tech. Dig. Of Optical Data Storage Conference p. 170 (2000), no month no day.
S. Kobayashi et al, GBR (Groove Baseband Recording) for an optical disc ROM, Tech. Dig. Of Optical Data Storage Conference p. 170 (2000), no date.
Mansuripur, M., et al, “Versatile Polychromatic Dynamic Testbed for Optical Disks”, Applied Optics, vol. 36, No. 35, p. 9296 (1997), no date.
Mansuripur, M., et al. Real-time studies of mark formation processes in phase-change and magneto-optical media using a two-laser tester J. Magn. Soc. Japan, vol. 25, No. 3-2, pg. 399-407 (2001), no date.

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