Patents by Inventor Ernest Chuang

Ernest Chuang 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).

  • Patent number: 8179579
    Abstract: 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: Grant
    Filed: May 21, 2008
    Date of Patent: May 15, 2012
    Assignees: InPhase Technologies, Inc., Hitachi, Ltd.
    Inventors: Kevin R. Curtis, Ernest Chuang, Alan Hoskins
  • Patent number: 7532374
    Abstract: A new type of FT lens is provided that improves phase conjugation in holographic data systems. This type of FT lens has a uniquely large isoplanatic patch. This enables relaxed assembly tolerances, asymmetric reader/writer architectures, and compensation for tilted plate aberrations in the media.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: May 12, 2009
    Assignees: Inphase Technologies, Inc., Nintendo Co., Ltd.
    Inventors: Bradley J. Sissom, Alan Hoskins, Apostolos Deslis, Ernest Chuang, Bernard Bell
  • Publication number: 20090046334
    Abstract: 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: Application
    Filed: May 21, 2008
    Publication date: February 19, 2009
    Applicants: INPHASE TECHNOLOGIES, HITACHI, LTD.
    Inventors: Kevin R. Curtis, Ernest Chuang, Alan Hoskins
  • Patent number: 7339710
    Abstract: A holographic disc recording medium records a hologram over the entire holographic disc recording medium by using a conical reference beam for recording. A hologram recorded image includes recorded images of a plurality of data pages including a plurality of pixels arranged in an approximately rectangular array. A cylindrical reference beam for reading having coherent light having an approximately cylindrical wavefront shape with a small curvature is used to minimize the mismatch in wavefront shapes between the reference beam for recording and reference beam for reading.
    Type: Grant
    Filed: January 31, 2005
    Date of Patent: March 4, 2008
    Assignee: Sony Corporation
    Inventor: Ernest Chuang
  • Publication number: 20080049283
    Abstract: A new type of FT lens is provided that improves phase conjugation in holographic data systems. This type of FT lens has a uniquely large isoplanatic patch. This enables relaxed assembly tolerances, asymmetric reader/writer architectures, and compensation for tilted plate aberrations in the media.
    Type: Application
    Filed: August 28, 2007
    Publication date: February 28, 2008
    Applicant: InPhase Technologies, Inc.
    Inventors: Bradley J. SISSOM, Alan Hoskins, Apostolos Deslis, Ernest Chuang, Bernard Bell
  • Patent number: 7180844
    Abstract: A holographic disc recording system for recording, in the form of holograms, information stored on a source disc onto a target disc includes a conical beam shaper which transforms a reference beam into a conical beam having a substantially cylindrically symmetrical shape and including light rays which travel along lines which intersect a beam axis of the conical beam at substantially the same angle with respect to the beam axis. The conical beam is incident on the target disc while the beam axis of the conical beam substantially coincides with a central axis of the target disc, so that substantially all of the light rays of the conical beam are incident on the target disc at substantially the same angle.
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: February 20, 2007
    Assignee: Sony Corporation
    Inventor: Ernest Chuang
  • Publication number: 20070013985
    Abstract: A method is provided for manufacturing a holographic medium by recording holograms in transmission geometry, and applying a reflective layer to one side of the holographic recording material after recording is completed (alternatively, for example, the playback system may contain a reflective surface or mirror). For readout, the reference beam is incident to the media from a side opposite the reflective layer. This beam propagates through the media to the reflective layer on the opposite side, and is reflected back through the media for readout of the transmission hologram. The diffracted hologram signal also exits the media on the side without the reflective layer, where it can be recovered by a detector on the same side as the laser source. Alternatively, the readout reference beam is positioned so that the incident beam reads out the hologram, and both the reference beam and diffracted hologram are reflected back through the media.
    Type: Application
    Filed: July 12, 2006
    Publication date: January 18, 2007
    Inventors: Ernest Chuang, Kevin Curtis
  • Publication number: 20050270609
    Abstract: According to one aspect and example, a holographic recording system includes a light source, an object for modulating an object beam from the light source, and a relay system adapted to magnify (positive or negative) the modulated beam (e.g., an image of the object) to an output image. The object may include an SLM operable to modulate the object beam with an information layer comprising a plurality of data pages. The output image is directed to the holographic storage medium, where a reference beam is also directed, to record the resulting interference pattern. Additionally, the relay system converges the output image to an output Fourier plane, which may be disposed within the holographic storage medium. A filter may be placed at an intermediate Fourier plane located prior to the output Fourier plane, and a phase mask may be placed at the position of the output image.
    Type: Application
    Filed: May 17, 2005
    Publication date: December 8, 2005
    Inventors: Ernest Chuang, Kevin Curtis, Jan Hoogland, Yunping Yang
  • Publication number: 20050254108
    Abstract: According to one aspect and example, a method for recording holographic media and/or holographic master data masks includes recording at least a first hologram or information layer with a first holographic medium (e.g., a “submaster”) and recording at least a second information layer with a second holographic medium (e.g., a second “submaster”). The first information layer and the second information layer from the first and second holographic media are then sequentially reconstructed and stored with a single holographic master medium (e.g., a “master”). The holographic master may then be used to record the stored first and second information layers into additional holographic media, for example, into HROM devices or the like.
    Type: Application
    Filed: May 17, 2005
    Publication date: November 17, 2005
    Inventors: Ernest Chuang, Kevin Curtis, Yunping Yang
  • Publication number: 20050185231
    Abstract: A holographic disc recording medium records a hologram over the entire holographic disc recording medium by using a conical reference beam for recording. A hologram recorded image includes recorded images of a plurality of data pages including a plurality of pixels arranged in an approximately rectangular array. A cylindrical reference beam for reading having coherent light having an approximately cylindrical wavefront shape with a small curvature is used to minimize the mismatch in wavefront shapes between the reference beam for recording and reference beam for reading.
    Type: Application
    Filed: January 31, 2005
    Publication date: August 25, 2005
    Applicant: Sony Corporation
    Inventor: Ernest Chuang
  • Patent number: 6807137
    Abstract: For encoding a current data word to be encoded, a most suitable redundant signal for the current data word to be encoded is generated by referring to a next data word to be encoded, that is, using a look-ahead decision method. The current data word to be encoded is encoded by using this redundant signal. A low-frequency component of the encoded data is effectively suppressed without decreasing encoding efficiency, by using both a regular substitution code and a stochastic substitution code, and a look-ahead determination algorithm for changing the length of words of a data segment, based on stochastic occurrence of a substitution word.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: October 19, 2004
    Assignee: Sony Corporation
    Inventor: Ernest Chuang
  • Publication number: 20040111345
    Abstract: A system for assisting in selling vehicles includes a database server (107), an application server (103) to access and handle information stored in the database server, and mobile terminals (101) each connected with the application server by communication channels (115, 113). Each mobile terminal includes a budget module (306), a link-switching module (303), a data synchronization module (309), a data filter module (307), and a data storage (310). The link-switching module is for switching states of connection as between the mobile terminal and the application server. The budget module is for calculating fees relating to vehicles using budget definition information stored in the data storage. The data synchronization module is for downloading information for synchronization from the application server. The data filter module is for filtering modification of data in the data storage, said modification performed when the mobile terminal is disconnected.
    Type: Application
    Filed: August 18, 2003
    Publication date: June 10, 2004
    Inventors: Ernest Chuang, Sanddy Huang, Hsueh Yin Lee
  • Publication number: 20030161246
    Abstract: A holographic disc recording system for recording, in the form of holograms, information stored on a source disc onto a target disc includes a conical beam shaper which transforms a reference beam into a conical beam having a substantially cylindrically symmetrical shape and including light rays which travel along lines which intersect a beam axis of the conical beam at substantially the same angle with respect to the beam axis. The conical beam is incident on the target disc while the beam axis of the conical beam substantially coincides with a central axis of the target disc, so that substantially all of the light rays of the conical beam are incident on the target disc at substantially the same angle.
    Type: Application
    Filed: February 6, 2003
    Publication date: August 28, 2003
    Applicant: Sony Corporation
    Inventor: Ernest Chuang