Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2006-01-24
2010-02-16
Hindi, Nabil Z (Department: 2627)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
Reexamination Certificate
active
07664001
ABSTRACT:
A method of holographic recording and reproduction includes recording to the holographic recording medium a wavelength variation reference pattern which is recorded as a hologram at a wavelength of the recording beam, recording to the holographic recording medium a page data pattern as a hologram at the wavelength of the recording beam, detecting the wavelength variation between the recording beam and the reproducing beam based on the size of an image for wavelength variation reference obtained by reproducing the wavelength variation reference pattern at a wavelength of the reproducing beam, and reproducing the page data pattern using the reproducing beam with a wavelength controlled based on the detected wavelength variation.
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patent: 7512054 (2009-03-01), Matsumoto et al.
patent: 2002-123949 (2002-04-01), None
patent: 2002-216359 (2002-08-01), None
Matsumoto, et al., “Method for Optical Recording, Method for Optical Reproducing, Optical Recording Medium, and Optical Recording and Reproducing Apparatus Utilizing Holography”, U.S. Appl. No. 11/231,251, filed Sep. 21, 2005.
Sincerbox, “History and Physical Principles,” H.J. Coufal's Holographic Data Storage, Springer, Berlin, pp. 3-11 (2000).
Akiyama Junichi
Hirao Akiko
Hirayama Yuzo
Honguh Yoshinori
Ikeda Naru
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Hindi Nabil Z
Kabushiki Kaish Toshiba
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