Patents Assigned to Call/Recall, Inc.
  • Patent number: 7436750
    Abstract: Systems, materials, and methods for increasing the storage capacity of optical recording media are provided. In one aspect, the systems of the present invention take advantage of high NA optics to realize ultra high storage capacity. In another aspect, the systems of the present invention include the use of a liquid interface between the recording medium and a liquid interface singlet objective lens to increase storage capacity. The invention also provides for a material system that allows shorter wavelengths to be used for recording and readout. Further, the invention provides for recording methods wherein the wavelength for recording to a medium is longer than the wavelength for reading from the medium. Additionally, the invention includes a multilayer structure for recording media that increases storage capacity. In another aspect of the present invention, high NA optics and related systems and methods are utilized to increase the storage capacity of optical storage systems.
    Type: Grant
    Filed: June 14, 2004
    Date of Patent: October 14, 2008
    Assignee: Call/Recall Inc.
    Inventors: Edwin P. Walker, Yi Zhang, Yoshinao Taketomi
  • Publication number: 20040257962
    Abstract: Systems, materials, and methods for increasing the storage capacity of optical recording media are provided. In one aspect, the systems of the present invention take advantage of high NA optics to realize ultra high storage capacity. In another aspect, the systems of the present invention include the use of a liquid interface between the recording medium and a liquid interface singlet objective lens to increase storage capacity. The invention also provides for a material system that allows shorter wavelengths to be used for recording and readout. Further, the invention provides for recording methods wherein the wavelength for recording to a medium is longer than the wavelength for reading from the medium. Additionally, the invention includes a multilayer structure for recording media that increases storage capacity. In another aspect of the present invention, high NA optics and related systems and methods are utilized to increase the storage capacity of optical storage systems.
    Type: Application
    Filed: June 14, 2004
    Publication date: December 23, 2004
    Applicant: Call/Recall Inc.
    Inventors: Edwin P. Walker, Yi Zhang, Yoshinao Taketomi
  • Patent number: 6590852
    Abstract: A volume radiation memory, nominally a 2.5 cm (1″) diameter 6 mm thick optical disk, is preferably written in parallel by two-photon absorption within, and read with massive parallelism by a single-beam-induced fluorescence of, spherical voxels of nominal diameter 2 microns spaced 2 microns center-to-center and arrayed 32×128 in planar segments that are tilted typically 40° to the planar surfaces of the disk, and that are typically located within a 5 mm thick central volume of the disk. Imaging of the voxels within the tilted planar segment for reading is through a two-lens doubly-telecentric afocal lens imaging system to a detector, normally an array of active pixel sensors or charge-coupled devices, located in the conjugate plane. Voxel illumination for reading may be orthogonal from the side of the disk, confocal-theta from a side of the disk, or co-linear through the doubly-telecentric afocal lens. Volumetric storage capacity is typically 5.89 gigabits (5.
    Type: Grant
    Filed: January 5, 1999
    Date of Patent: July 8, 2003
    Assignee: Call/Recall, Inc.
    Inventor: Frederick Bossert McCormick, Jr.