Patents by Inventor Kevin R. Curtis
Kevin R. Curtis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20090092160Abstract: Embodiments of systems and methods are provided for a tunable laser device. The tunable laser device may include a tunable Bragg reflector that allows its wavelength to be tuned via temperature and/or pressure. This Bragg reflector may include holographic material in which a Bragg grating may be formed comprising parallel fringes of alternating index of refractions. Temperature and/or pressure changes may be effected in the Bragg reflector by, for example, a thermoelectric cooler and/or piezo transducer.Type: ApplicationFiled: December 15, 2008Publication date: April 9, 2009Applicant: INPHASE TECHNOLOGIES, INC.Inventors: Susan Hunter, Ian R. Redmond, James Jensen, Kevin R. Curtis, William L. Wilson
-
Publication number: 20090080042Abstract: A monocular holographic storage device or system to provide for compact recording and/or reading of data pages in a holographic storage medium. Also provided are methods for carrying out such data storage and/or data recovery using a monocular holographic storage device or system. Further provided are articles comprising holographic storage media for recording or for reading recorded data using such devices or systems.Type: ApplicationFiled: December 1, 2008Publication date: March 26, 2009Applicants: INPHASE TECHNOLOGIES, INC., HITACHI, LTD.Inventors: Kevin R. Curtis, Ken E. Anderson, Friso Schlottau, Tatsuro Ide, Ken'ichi Shimada, Takeshi Shimano, Harukazu Miyamoto
-
Publication number: 20090046334Abstract: HROM replication methods, devices or systems are disclosed herein. Also disclosed herein are articles comprising conical reference (reconstruction) beam hologram elements to generate conical or conical like reference (reconstruction) beams which may be used in such HROM replication methods, devices or systems. Further disclosed herein are articles comprising a target medium which may be used in such HROM replication methods, devices or systems.Type: ApplicationFiled: May 21, 2008Publication date: February 19, 2009Applicants: INPHASE TECHNOLOGIES, HITACHI, LTD.Inventors: Kevin R. Curtis, Ernest Chuang, Alan Hoskins
-
Publication number: 20080259421Abstract: According to one aspect, methods and systems for recording and reading holographic storage media are provided. In one aspect, a method includes illuminating a data mask with a beam and recording a resulting modulated beam in a holographic storage medium, wherein the data mask includes an information layer that is divided into multiple data pages, and propagating a reference beam to the holographic storage medium to record the multiple data pages of the data mask in a parallel fashion on the holographic storage medium.Type: ApplicationFiled: April 14, 2008Publication date: October 23, 2008Applicant: InPhase Technologies, Inc.Inventors: Kevin R. Curtis, Kenneth E. Anderson
-
Publication number: 20080239428Abstract: Non-Fourier Transform (FT) plane angular filters and their use in holographic storage systems or devices for angular filtering of a data beam prior to recording holographic data or for angular filtering of a recovered beam prior to detecting the recovered holographic data. The non-FT plane filters may be a macrotube array, an etalon, a multi-layer thin film interference coating on a curved surface, a lenslet array device, a waveguide-like array, or a combination thereof. Also provided are methods for carrying out angular filtering using such filters for data storage and/or data recovery.Type: ApplicationFiled: October 15, 2007Publication date: October 2, 2008Applicants: INPHASE TECHNOLOGIES, INC., NINTENDO CO., LTD.Inventors: BERNARD White BELL, KEVIN R. CURTIS, HUGH J. MASTERSON, BRADLEY J. SISSOM, JAMES P. TUCKER
-
Publication number: 20080225670Abstract: In holographic recording, it is important to form stably an interference fringe between a reference beam and a signal beam in a holographic storage medium. To suppress factors degrading stability of the interference fringe, such as fluctuation of atmospheric air, position displacement of optical components and the like during propagation of the reference and signal beams, an optical pickup and an optical information recording/reproducing apparatus adopt an optical system structure providing a higher proportion of optical components shared by the reference and signal beams optical path than conventional optical system structure. To increase the proportion of shared optical components, the signal beam and the reference beam pass through the PBS prism as parallel beams and a concave lens is placed on a reference beam path just before the objective lens.Type: ApplicationFiled: February 27, 2008Publication date: September 18, 2008Inventors: Kenichi Shimada, Tatsuro Ide, Kevin R. Curtis, Ken E. Anderson
-
Publication number: 20080219128Abstract: An optical pickup for recording a hologram by using an angle multiplexing method. An optical beam is separated into two beams, a signal beam and a reference beam having different convergence/divergence degrees, by using an optical component such as a diffraction lens. The signal and reference beams are made incident upon the same objective, and the optical component or the objective lens is moved in a direction perpendicular to an optical axis, to thereby realize angle multiplex recording. If an optical information recording medium is inclined, the optical component or the objective lens is moved along the direction along which the optical information recording medium moved to change an angle of the reference beam incident upon the optical information recording medium and compensate for degradation of a reproduction signal.Type: ApplicationFiled: February 27, 2008Publication date: September 11, 2008Inventors: Tatsuro Ide, Kenichi Shimada, Masahiko Takahashi, Takeshi Shimano, Kevin R. Curtis, Ken E. Anderson
-
Publication number: 20080100890Abstract: A monocular holographic storage device or system to provide for compact recording and/or reading of data pages in a holographic storage medium. Also provided are methods for carrying out such data storage and/or data recovery using a monocular holographic storage device or system. Further provided are articles comprising holographic storage media for recording or for reading recorded data using such devices or systems.Type: ApplicationFiled: August 17, 2007Publication date: May 1, 2008Applicants: INPHASE TECHNOLOGIES, HITACHI, LTD.Inventors: KEVIN R. CURTIS, Ken E. Anderson, Friso Schlottau, Tatsuro Ide, KEN'ICHI SHIMADA, Takeshi Shimano, Harukazu Miyamoto
-
Publication number: 20070160106Abstract: Embodiments of systems and methods are provided for a tunable laser device. The tunable laser device may include a tunable Bragg reflector that allows its wavelength to be tuned via temperature and/or pressure. This Bragg reflector may include holographic material in which a Bragg grating may be formed comprising parallel fringes of alternating index of refractions. Temperature and/or pressure changes may be effected in the Bragg reflector by, for example, a thermoelectric cooler and/or piezo transducer.Type: ApplicationFiled: January 5, 2007Publication date: July 12, 2007Applicant: InPhase TechnologiesInventors: Susan Hunter, Ian R. Redmond, James Jensen, Kevin R. Curtis, William L. Wilson
-
Patent number: 7209270Abstract: A holographic storage apparatus for recording data in a holographic medium includes at least one light source for generating a reference beam and a signal beam. The reference beam is preferably a phase beam of unchanging phase content. The apparatus also includes a holographic medium placed in a path of the reference beam and a path of the signal beam. The holographic medium has a first face and both the reference beam and the signal beam enter the holographic medium through the first face. The holographic medium also includes a data reflective surface. The reference beam and the signal beam interfere in the holographic medium to create a hologram only after at least one of the reference beam and the signal beam have reflected off of the data reflective surface.Type: GrantFiled: June 16, 2005Date of Patent: April 24, 2007Assignee: InPhase Technologies, Inc.Inventor: Kevin R. Curtis
-
Patent number: 7167286Abstract: Disclosed is a multiplexing method and apparatus that allows holograms to be spatially multiplexed with partial spatial overlap between neighboring stacks of holograms. Each individual stack can additionally take full advantage of an alternate multiplexing scheme such as angle, wavelength, phase code, peristrophic, or fractal multiplexing, for example. An amount equal to the beam waist of the signal beam writing a hologram separates individual stacks of holograms. Upon reconstruction, a hologram and its neighbors will all be readout simultaneously. An filter is placed at the beam waist of the reconstructed data such that the neighbors that are read out are not transmitted to the camera plane. Alternatively, these unwanted reconstructions can be filtered out with an angular filter at an intermediate plane in the optical system that has a limited angular passband.Type: GrantFiled: June 23, 2006Date of Patent: January 23, 2007Assignee: InPhase Technologies, Inc.Inventors: Kenneth E. Anderson, Kevin R. Curtis
-
Patent number: 7092133Abstract: Disclosed is a multiplexing method and apparatus that allows holograms to be spatially multiplexed with partial spatial overlap between neighboring stacks of holograms. Each individual stack can additionally take full advantage of an alternate multiplexing scheme such as angle, wavelength, phase code, peristrophic, or fractal multiplexing, for example. An amount equal to the beam waist of the signal beam writing a hologram separates individual stacks of holograms. Upon reconstruction, a hologram and its neighbors will all be readout simultaneously. An filter is placed at the beam waist of the reconstructed data such that the neighbors that are read out are not transmitted to the camera plane. Alternatively, these unwanted reconstructions can be filtered out with an angular filter at an intermediate plane in the optical system that has a limited angular passband.Type: GrantFiled: October 6, 2003Date of Patent: August 15, 2006Assignee: Inphase Technologies, Inc.Inventors: Kenneth E. Anderson, Kevin R. Curtis
-
Patent number: 6909529Abstract: A holographic storage apparatus for recording data in a holographic medium includes at least one light source for generating a reference beam and a signal beam. The reference beam is preferably a phase beam of unchanging phase content. The apparatus also includes a holographic medium placed in a path of the reference beam and a path of the signal beam. The holographic medium has a first face and both the reference beam and the signal beam enter the holographic medium through the first face. The holographic medium also includes a data reflective surface. The reference beam and the signal beam interfere in the holographic medium to create a hologram only after at least one of the reference beam and the signal beam have reflected off of the data reflective surface.Type: GrantFiled: May 13, 2002Date of Patent: June 21, 2005Assignee: Inphase Technologies, Inc.Inventor: Kevin R. Curtis
-
Patent number: 6825960Abstract: According to one aspect a method for manufacturing a holographic storage medium includes providing one or more data masks with data to be recorded, illuminating the one or more data masks onto the medium with a plane wave object beam from a laser light source operating at a record wavelength, propagating a reference beam at an incident angle to the medium to record the one or more data masks on the medium, and altering the incident angle of the reference beam for each of the one or more data masks, wherein each of the one or more data masks recorded on said medium can be read bit by bit using a laser light source operating in a readout range of wavelengths different from the record wavelength.Type: GrantFiled: January 15, 2003Date of Patent: November 30, 2004Assignee: InPhase Technologies, Inc.Inventors: Kevin R. Curtis, Brian M. King, William L. Wilson
-
Patent number: 6798547Abstract: A method of recording holograms includes: generating a first signal-beam from a signal-beam source and a first reference beam from a reference-beam source; recording a first hologram in a holographic medium from an interference between the first signal beam and the first reference beam; shifting the reference-beam source after the act of recording the first hologram; generating a second signal beam from the signal-beam source and a second reference beam from the reference-beam source after the act of shifting the reference-beam source following the recording of the first hologram; and recording a second hologram in the holographic medium from an interference between the second signal beam and the second reference beam.Type: GrantFiled: July 22, 2002Date of Patent: September 28, 2004Assignee: Inphase Technologies, Inc.Inventors: William L. Wilson, Mark R. Ayres, Curt Shuman, Kevin R. Curtis
-
Publication number: 20040179251Abstract: Disclosed is a multiplexing method and apparatus that allows holograms to be spatially multiplexed with partial spatial overlap between neighboring stacks of holograms. Each individual stack can additionally take full advantage of an alternate multiplexing scheme such as angle, wavelength, phase code, peristrophic, or fractal multiplexing, for example. An amount equal to the beam waist of the signal beam writing a hologram separates individual stacks of holograms. Upon reconstruction, a hologram and its neighbors will all be readout simultaneously. An filter is placed at the beam waist of the reconstructed data such that the neighbors that are read out are not transmitted to the camera plane. Alternatively, these unwanted reconstructions can be filtered out with an angular filter at an intermediate plane in the optical system that has a limited angular passband.Type: ApplicationFiled: October 6, 2003Publication date: September 16, 2004Inventors: Kenneth E. Anderson, Kevin R. Curtis
-
Patent number: 6695213Abstract: Disclosed is a holographic card for storing data in holographic format in accordance with the present invention includes a holographic layer for containing holographic information and a transparent protective layer overlaying the holographic layer. The holographic layer includes at least a first data section with machine readable holographic data. The card also includes a second data section containing either or both presentation or security data. The second data section is preferably included in the holographic layer, but can also be separate therefrom, particularly when non-holographic data is contained therein.Type: GrantFiled: October 2, 2001Date of Patent: February 24, 2004Assignee: InPhase Technologies, Inc.Inventor: Kevin R. Curtis
-
Patent number: 6697180Abstract: Holography in which an array of overlapping holograms is recorded or reconstructed in a recording medium, holograms being produced by interference of a reference beam and a signal beam, in which the reference beam is a phase beam which consists essentially of a multitude of rays of varying angle of incidence and non-uniform phase, in which the process comprises changing the orientation of the phase beam for recording or reconstructing different holograms, wherein phase beam orientation is changed relative to the medium while maintaining the medium stationary in order to enable recording or reconstruction of individual holograms at a given location of the medium.Type: GrantFiled: August 9, 2002Date of Patent: February 24, 2004Assignee: Inphase Technologies, Inc.Inventors: William L. Wilson, Kevin R. Curtis, Michael C. Tackitt
-
Publication number: 20040027629Abstract: Holography in which an array of overlapping holograms is recorded or reconstructed in a recording medium, holograms being produced by interference of a reference beam and a signal beam, in which the reference beam is a phase beam which consists essentially of a multitude of rays of varying angle of incidence and non-uniform phase, in which the process comprises changing the orientation of the phase beam for recording or reconstructing different holograms, wherein phase beam orientation is changed relative to the medium while maintaining the medium stationary in order to enable recording or reconstruction of individual holograms at a given location of the medium.Type: ApplicationFiled: August 9, 2002Publication date: February 12, 2004Inventors: William L. Wilson, Kevin R. Curtis, Michael C. Tackitt
-
Publication number: 20030223101Abstract: According to one aspect a method for manufacturing a holographic storage medium includes providing one or more data masks with data to be recorded, illuminating the one or more data masks onto the medium with a plane wave object beam from a laser light source operating at a record wavelength, propagating a reference beam at an incident angle to the medium to record the one or more data masks on the medium, and altering the incident angle of the reference beam for each of the one or more data masks, wherein each of the one or more data masks recorded on said medium can be read bit by bit using a laser light source operating in a readout range of wavelengths different from the record wavelength.Type: ApplicationFiled: January 15, 2003Publication date: December 4, 2003Inventors: Kevin R. Curtis, Brian M. King, William L. Wilson