Akonia Holographics Assigned Patent

Akonia Holographics, LLC, Longmont, CO, has been assigned a patent (8,446,808) developed by four co-inventors for a "use of feedback error and/or feed-forward signals to adjust control axes to optimal recovery position of hologram in holographic storage system or device."

The co-inventors are Mark R. Ayres, Boulder, CO, Alan Hoskins, Golden, CO, Paul C. Smith, Louisville, CO, and John J. Kane, Westminster, CO

The abstract of the patent published by the U.S. Patent and Trademark Office states: "A method for adjusting at least one alignment control axis of a holographic storage system or device to or towards a sufficiently optimal recovery position for recovery of a hologram based on a derived feedback error signal and/or a derived feed-forward signal. For the next hologram in the sequence, the derived feedback error signal estimates the direction and magnitude of misalignment of the at least one alignment control axis for one or more previously recovered holograms based on alignment-indicating data. The derived feed-forward signal estimates an optimal alignment value for the at least one alignment control axis for one or more holograms based on recording and recovery operating condition data for the holograms. An iterative alignment procedure may also be used to derive a feedback error signal for one hologram."

The patent application was filed on Jan. 9, 2009 (12/351,047).