Optical: systems and elements – Holographic system or element – For producing or reconstructing images from multiple holograms
Reexamination Certificate
2006-11-22
2009-11-24
Allen, Stephone B (Department: 2872)
Optical: systems and elements
Holographic system or element
For producing or reconstructing images from multiple holograms
C359S001000, C359S032000, C382S254000
Reexamination Certificate
active
07623279
ABSTRACT:
Systems and methods for recovering data in a holographic memory system. The systems and methods use homodyne detection to introduce a local oscillator beam into a reconstructed data beam of the recovered hologram. An image of the combined beam comprising the reconstructed data beam and local oscillator beam may be processed to obtain contrast level information for the pixels of the detected image. This contrast level information may then be used to obtain an increased contrast image of the recovered hologram, which may increase the SNR of the recovered data.
REFERENCES:
patent: 5058124 (1991-10-01), Cameron et al.
patent: 5491570 (1996-02-01), Rakuljic et al.
patent: 6047008 (2000-04-01), Funakawa
patent: 6103454 (2000-08-01), Dhar et al.
patent: 6414763 (2002-07-01), Hesselink et al.
patent: 6449627 (2002-09-01), Baer et al.
patent: 6480513 (2002-11-01), Kapany et al.
patent: 6482551 (2002-11-01), Dhar et al.
patent: 6597711 (2003-07-01), Fernald et al.
patent: 6614566 (2003-09-01), Curtis et al.
patent: 6650447 (2003-11-01), Curtis et al.
patent: 6673497 (2004-01-01), Efimov et al.
patent: 6743552 (2004-06-01), Setthachayanon et al.
patent: 6765061 (2004-07-01), Dhar et al.
patent: 6768839 (2004-07-01), Blomquist et al.
patent: 6780546 (2004-08-01), Trentler et al.
patent: 6920159 (2005-07-01), Sidorin et al.
patent: 7027469 (2006-04-01), Sidorin et al.
patent: 7065032 (2006-06-01), Horimai
patent: 7092133 (2006-08-01), Anderson et al.
patent: 7262892 (2007-08-01), Yasuda et al.
patent: 7508560 (2009-03-01), Kihara
patent: 7511867 (2009-03-01), Yasuda et al.
patent: 2003/0206320 (2003-11-01), Cole et al.
patent: 2004/0027625 (2004-02-01), Trentler et al.
patent: 2005/0134948 (2005-06-01), Waldman et al.
patent: 2005/0286387 (2005-12-01), Ayres et al.
patent: 2005/0286388 (2005-12-01), Ayres et al.
patent: 2006/0281021 (2006-12-01), Riley et al.
patent: 2007/0121184 (2007-05-01), Coene et al.
Anderson, et al. “Polytopic Multiplexing” Optics Letters, vol. 29, No. 12, (Jun. 15, 2004), pp. 1402-1404.
Ayres, et al. “Image Oversampling for Page-Oriented Optical Data Storage”, Applied Optics, vol. 45, No. 11, (Apr. 10, 2006), pp. 2459-2464.
Ayres, et al. “Image Oversampling for Holographic Data Storage”, Optical Society of America, 2005.
Yasuda, et al. “Optical Noise Reduction by Reconstructing Positive and Negative Images from Fourier Holograms in Coaxial Holographic Storage Systems”, Optics Letters, vol. 31, No. 11, (Jun. 1, 2006), pp. 1639-1641.
Yasuda, et al. “Coaxial Holographic Data Storage Without Recording the DC Components”, Optics Letters, vol. 31, No. 17, (Sep. 1, 2006), pp. 2607-2609.
Joseph et al. “Homogenized Fourier Transform Holographic Data Storage Using Phase Spatial Light Modulators and Methods for Recovery of Data from the Phase Image”, Applied Optics, vol. 45, No. 25, (Sep. 1, 2006), pp. 6374-6380.
Yasuda et al. “Optical Noise Reduction for Coaxial Holographic Data Storage”.
Ayers, et al. Presentation “Image Oversampling for Holographic Data Storage” ISOM/ODS ThE4, Jul. 10-14, 2005.
Burckhardt, C.B., “Use of a Random Phase Mask for the Recording of Fourier Transform Holograms of Data Masks”, Applied Optics, vol. 9, No. 3, (Mar. 1970), pp. 695-700.
Kazovsky, et al. “Coherent Systems,” Optical Fiber Communication Systems, pp. 263-276 (1996).
Horimai, et al. “Collinear Holography”, Applied Optics, vol. 44, (2005), pp. 2575-2579.
PCT/US2007/06094 International Search Report and the Written Opinion of the International Searching Authority, or the Declaration, mailed Aug. 22, 2008.
PCT/US2006/19906 International Search Report and the Written Opinion of the International Searching Authority, or the Declaration, mailed Sep. 16, 2008.
Allen Stephone B
Callaway Jade R
Inphase Technologies, Inc.
Jagtiani Ajay A.
Vedder Price P.C.
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