Patents by Inventor Jean-Jacques P. Drolet

Jean-Jacques P. Drolet 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: 6057703
    Abstract: Methods and apparatus to reconfigure a programmable logic device on a chip. The device includes a number of configurable elements. The methods include the steps of retrieving reconfiguration data pre-stored in a memory device located apart from the chip, and transferring the retrieved reconfiguration data in parallel to each of the configurable elements. One approach pre-stores the data in holograms.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: May 2, 2000
    Assignee: Holoplex Inc.
    Inventors: Fai Mok, Jean-Jacques P. Drolet, Demetri Psaltis
  • Patent number: 5959747
    Abstract: An architecture for holographic data storage and processing integrates multifunctional silicon-based optoelectronic devices, rewritable holographic material, optical devices and other electro-optical elements in compact and high-performance systems. A dynamic hologram refresher based on optoelectronic integrated circuits has a smart pixel structure including an electrically addressed SLM to write a new data page, a thresholding detector array for readout, and a memory to latch the data from the detector to the modulator in each pixel. In particular, conjugate reconstruction is used in combination with the dynamic hologram refresher to retrieve data from volume multiplexed holograms in the rewritable holographic material.
    Type: Grant
    Filed: September 11, 1996
    Date of Patent: September 28, 1999
    Assignee: California Institute of Technology
    Inventors: Demetri Psaltis, Jean-Jacques P. Drolet, George Barbastathis
  • Patent number: 5880801
    Abstract: The present invention discloses nanomechanical fabrication methods of hybrid aligned nematic (HAN) cells of liquid crystals for creating analog spatial light modulators and smart pixel arrays on conventionally fabricated VLSI integrated circuits. The liquid crystal material is encapsulated between a top substrate and a bottom substrate. The locally averaged direction of the long axis of the molecules of liquid crystals of the HAN cells varies smoothly from homogeneous alignment on a top substrate to homeotropic alignment on a bottom substrate. The bottom substrate causes a homeotropic alignment of the liquid crystal because of its porous microstructure.
    Type: Grant
    Filed: March 7, 1996
    Date of Patent: March 9, 1999
    Assignee: California Institute of Technology
    Inventors: Axel Scherer, Jean-Jacques P. Drolet, Demetri Psaltis