Patents Assigned to Trident Systems, Inc.
  • Patent number: 6405202
    Abstract: The present invention discloses a method and system for improved user access control to an Object Oriented Database (OODB) based on property level security. Property level access control specifies who can access each piece of information within an object of an OODB. Embodiments of the present invention include a database comprising at least one object, the object containing at least one property and a property access control list comprising at least one property level permissions set. The property access control list may be used to control user access at the property level of an OODB. The present invention may further include a group access list including the identity of groups that have access to the property.
    Type: Grant
    Filed: April 27, 1999
    Date of Patent: June 11, 2002
    Assignee: Trident Systems, Inc.
    Inventors: David E. Britton, Nicholas E. Karangelen
  • Patent number: 6401101
    Abstract: The present invention provides a method, server/computer and data structure for reducing the overhead of dynamically linking attribute values across objects and minimizing memory requirements for storing cloned objects by utilizing a process of generating at least two Complex Objects, each having at least one Component Object, wherein each of said Complex Objects shares at least one Component Object with another Complex Object. By using a combination of Tailored Server and class methods (for construction, property access, copy, clone, delete, etc.) in handling the Complex Objects, the present invention hides the multiple Component Object complexity from the user and manages the generation and modification of Complex Objects including object schema definition and object instantiation. Thus, for example, Complex Object cloning permits a concomitant change for a common core property value to be accomplished for all clones that share the Shared Component Object.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: June 4, 2002
    Assignee: Trident Systems, Inc.
    Inventors: David E. Britton, Nicholas E. Karangelen, Theresa Surowiec, Thomas M. Kalafut, Michael Stoddard, Vasiliki Paraskevas Kelly
  • Patent number: 6392661
    Abstract: An apparatus and process for arranging and presenting situational awareness information on a computer display screen using maps and/or other situational awareness information so that greater amounts of relevant information can be presented to a user within the confines of the limited area on small computer screen displays. The map display layout for a screen display utilizes multiple, independent map displays arranged on a computer screen in order to maximize situational awareness information and display that information efficiency. By displaying single or multiple maps in a plurality of range bands arranged along the peripheral area of a display screen, wasted screen area is minimized. The ability to independently scale with respect to distance, time and velocity, as well as zoom and pan each map on the screen display further improves the display presentation.
    Type: Grant
    Filed: June 17, 1999
    Date of Patent: May 21, 2002
    Assignee: Trident Systems, Inc.
    Inventor: Leland James Tankersley
  • Patent number: 6389176
    Abstract: The present invention relates to an image/video enhancement system and method for transmission of the image/video. The system processes an image before transmission using a pre-processor and then de-processes it after transmission using a post-processor. The pre-processor increases the compression ratio of the compression scheme used by the transmission system without losing image quality. The post-processor restores the transmitted image to a high-quality image.
    Type: Grant
    Filed: September 25, 1998
    Date of Patent: May 14, 2002
    Assignee: Trident Systems, Inc.
    Inventors: Charles C. Hsu, Mark J. Sandford, Joseph S. Landa