Patents by Inventor Chris Walker

Chris Walker 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: 20080037259
    Abstract: A luminaire assembly generally includes a reflector having a center of symmetry and a lamp supported within the reflector, wherein the lamp is offset from the reflector center of symmetry, whereby light emitted from the lamp is reflected by the reflector in an asymmetric pattern. In a method of illuminating a roadway having traffic moving in a flow direction, a luminaire having a reflector and a lamp is mounted at a side of the roadway and light emitted from the lamp is reflected with the reflector whereby a greater portion of the reflected light is directed in the traffic flow direction than is directed against the traffic flow direction.
    Type: Application
    Filed: August 9, 2007
    Publication date: February 14, 2008
    Inventors: Chris Walker, Edward Bilson, Rick Kauffman
  • Publication number: 20060233504
    Abstract: Various embodiment comprise silicon-on-insulator waveguide designs that simultaneously achieve both high optical confinement, low-loss, and provide for electrical connections. In certain embodiments, high index contrast waveguides comprise a central elongate waveguide portion and a segmented portion comprising a single thin layer of Silicon-On-Insulator that achieves both high optical confinement and minimal insertion loss. Other devices, such as chemical and biological sensors, and optical elements may also be fabricated.
    Type: Application
    Filed: June 7, 2005
    Publication date: October 19, 2006
    Inventors: Michael Hochberg, Tom Baehr-Jones, Chris Walker, Jeremy Witzens, Lawrence Gunn, Axel Scherer
  • Publication number: 20050256881
    Abstract: A method for serverless data management includes receiving an asset identifier in a first system, receiving data associated with the asset identifier in the first system, determining a resource in a storage network for storage of the asset data, in response to a path algorithm and the asset identifier, wherein the determination is made substantially free of interaction with the storage network, storing the asset data on the resource, creating a link between the asset identifier and the resource in the first system, receiving the asset identifier in a second system, determining the storage resource where the asset data is stored, in response to the path algorithm and the asset identifier, wherein the determination is made substantially free of interaction with the storage network and the first system, and creating a link between the asset identifier and the resource in the second computer system.
    Type: Application
    Filed: April 12, 2005
    Publication date: November 17, 2005
    Applicant: Pixar
    Inventors: Mark Harrison, Chris Walker, Rudro Samanta, Miles Egan, Michael Fong
  • Publication number: 20020087867
    Abstract: The present invention describes a system wherein an RF ID card uses a user interface, such as a keypad, to input a password. The password is encrypted and sent to an RF ID reader. Since the password is not permanently stored on the RF ID card, someone stealing the RF ID card cannot use the RF ID card to impersonate a user.
    Type: Application
    Filed: November 28, 2001
    Publication date: July 4, 2002
    Inventors: Robert R. Oberle, Chris Walker
  • Patent number: 6232989
    Abstract: A system and method for augmenting data and for integrating the augmented data into a program running on a computer system is provided. The invented system couples to a data collection computer along with data generating equipment, such as a body suit, for augmenting data generated thereby. Augmentation data generated by the system and body movement data generated by the suit is simultaneously transmitted to the computer containing a data base defining a virtual world. As the suit generates movement data and transmits the data to the computer for controlling the movements of an object in the virtual world, an operator of the system monitors the data generated by the equipment and activates the system to selectively augment data generated thereby, for enhancing the movements of the character. The invented system transmits the augmentation data to the data collection computer to augment the data generated by the equipment so that the character, has exaggerated movements or cartoonish features.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: May 15, 2001
    Assignee: Modern Cartoons, Ltd.
    Inventors: Chris Walker, Babak Beheshti
  • Patent number: 6215495
    Abstract: A computer-readable medium having stored thereon an applications programming interface for causing a computer system to render a three-dimensional scene according to a downloaded file. A scene graph is constructed from a number of objects stored in memory. These objects have variables which can be changed by subroutine calls. Furthermore, one or more objects can contain one or more fields. A field is comprised of a data type which represents the state of an object. Engines are used to perform defined functions to the fields. One or more routes can be used to change one field in response to changes made to another field. A class hierarchy is defined to implement a retained mode graphics.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: April 10, 2001
    Assignee: Silicon Graphics, Inc.
    Inventors: Brad Grantham, Michael T. Jones, Mark G. Segal, Chris Tanner, Chris Walker, John Rohlf
  • Patent number: 6121953
    Abstract: A system for manipulating a computer generated animation in real time that includes a head mount configured to inhibit relative movement between the head mount and head of a wearer is provided. The head mount is coupled to a computer that processes data generated by the head mount in real time. Data generated by the facial movements of a wearer of the head mount is processed in real time so that an object, such as a cartoon in a virtual reality program, has facial expressions analogous to the facial expressions of the wearer, as the wearer is performing. A plurality of cameras monitor different localized regions of the wearer's face for sensing movements in these regions to generate data indicating movement. The cameras are attached to the head mount with flexible arms for precise positioning of the cameras. The cameras monitor each of the mouth, chin and cheek, and an eyebrow and forehead regions of the wearer's face and one of the wearer's eyes.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: September 19, 2000
    Assignee: Modern Cartoons, Ltd.
    Inventor: Chris Walker
  • Patent number: 6049327
    Abstract: A system is provided for manipulating computer generated animation in real time, such as a virtual reality program running on a computer. The system includes a data glove for managing data based on an operator's hand gestures. The invented data glove comprises an elastic material that closely matches the shape of a wearer's hand, enabling the wearer to move their hand freely. A movement sensing unit is provided for sensing any hand gestures of the wearer. The movement sensing unit comprises a flexible circuit board that extends along the dorsal region of the wearer's fingers and hand. The circuit board includes a base with a signal processor for processing received signals generated by a plurality of movement sensors. The sensors transmit signals to the processor for determining any movement of the wearer's hand. The sensors have a resistive material disposed on each side thereof, so that any flexure of the sensor causes the resistance values to diverge, preferably linearly.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: April 11, 2000
    Assignee: Modern Cartoons, Ltd
    Inventors: Chris Walker, Babak Baheshti
  • Patent number: 5963891
    Abstract: A system is provided for tracking body movements, including subtle body movements, in a virtual reality system and for integrating data generated therefrom into a virtual reality system in real tine. The system of the preferred embodiment of the present invention includes a data generating body suit having a plurality of movement indicating sensors secured thereto at a number of predetermined positions for determining movements of the wearer. Any movement by the wearer generates data that is transmitted to a computer for processing the data in real time. The data suit includes sensors for determining body position and orientation and sensors for accurately tracking subtle body movements such as movements of the wrist. Bend sensors include elongated portions that traverse an articulation to be monitored.
    Type: Grant
    Filed: April 24, 1997
    Date of Patent: October 5, 1999
    Assignee: Modern Cartoons, Ltd.
    Inventors: Chris Walker, Babak Beheshti