Patents by Inventor Robert T. Krivacic

Robert T. Krivacic 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: 6970259
    Abstract: A print management system includes a policy that determines a protection level for a document to be printed. The document is printed using forgery detection and deterrence technologies, such as fragile and robust watermarks, glyphs, and digital signatures, that are appropriate to the level of protection determined by the policy. A plurality of printers are managed by a print management system. Each printer can provide a range of protection technologies. The policy determines the protection technologies for the document to be printed. The print management system routes the print job to a printer that can apply the appropriate protections and sets the appropriate parameters in the printer. Copy evidence that can establish that a document is a forgery and/or tracing information that identifies the custodian of the document and restrictions on copying of the document and use of the information in the document are included in the watermark that is printed on the document.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: November 29, 2005
    Assignee: Xerox Corporation
    Inventors: Teresa F. Lunt, Matthew K. Franklin, David L. Hecht, Thomas A. Berson, Mark J. Stefik, R. Drew Dean, Alan G. Bell, Thomas M. Breuel, Todd A. Cass, Douglas N. Curry, Daniel H. Greene, Robert T. Krivacic
  • Publication number: 20040131241
    Abstract: Provided is a method for obtaining a position of an object. A slide which carries at least one object and has reticle marks arranged at positions which form substantially a right angle, is positioned in a slide holder of a first imaging system. A first coordinate space of the imaging system is defined, and coordinates of the reticle marks in the first coordinate space are designated. A second coordinate space of a second imaging system is defined, and the coordinates of the reticle marks in the second coordinate space is designated. Using the designated coordinates of the reticle marks of the first coordinate space, the coordinate conversion parameters are computed. Thereafter, coordinates of at least one object in the first coordinate space are designated, and the first coordinate space coordinates of the object are converted into unique coordinates in a second coordinate space, using the coordinate conversion parameters.
    Type: Application
    Filed: December 19, 2003
    Publication date: July 8, 2004
    Inventors: Douglas N. Curry, Richard H. Bruce, Robert T. Krivacic, Huangpin B. Hsieh, Richard A. Lerner
  • Publication number: 20040071332
    Abstract: In accordance with one aspect of the present application, an imager and method for detecting and locating rare cells in a sample is disclosed. An imager stage supports the sample. A fiber optic bundle has a proximate bundle end of first fiber ends arranged to define an input aperture viewing the sample on the translation stage. The fiber optic bundle further has a distal bundle end of second fiber ends arranged to define an output aperture shaped differently from the input aperture and disposed away from the imager stage. A scanning radiation source is arranged in fixed relative position to the input aperture. The scanning radiation source scans a radiation beam on the sample within a viewing area of the input aperture. The radiation beam interacts with the sample to produce a light signal that is reflected, scattered, transmitted, re-emitted, or otherwise collected and received by the input aperture and transmitted via the fiber optic bundle to the output aperture.
    Type: Application
    Filed: July 9, 2003
    Publication date: April 15, 2004
    Applicant: XEROX CORPORATION
    Inventors: Richard H. Bruce, Douglas N. Curry, Robert T. Krivacic, Huangpin B. Hsieh
  • Patent number: 6707481
    Abstract: A light source modulator and method of modulating a light source use a lower bandwidth input signal during rendering of image data, which is less susceptible to systematic error. The modulation scheme improves the efficiency of use of high speed memory by limiting a number of intensity level transitions to a single transition per output pixel. In conjunction with the limitation of transitions per rendering of each output pixel, data is provided to the modulator that indicates an intensity level to be provided by the modulator and a timing of a transition to that intensity level. In accordance with the exemplary embodiments of the invention, an intensity level may be a minimum intensity level, a maximum intensity level and at least one intermediate intensity level which is intermediate between the minimum and maximum intensity levels.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: March 16, 2004
    Assignee: Xerox Corporation
    Inventors: Robert T. Krivacic, Alan G. Bell, Douglas N. Curry
  • Patent number: 5905488
    Abstract: As an electronic pen (16) moves across a display screen (12), a position resolver (14) generates a series of x,y-coordinate positions which are sent to a remote computer system (20) having a relatively high latency or time delay before the positions are processed and intended display information is returned to the memory cells of a memory array (24) which controls the display on the display screen (12). During the time delay, a temporary display of the trajectory is created, preferably in light gray or another distinguishable color. Each x,y-coordinate position is compared (32) with an immediately preceding coordinate position to determine whether the pen has moved. If so, the new coordinate is stored in a memory (36) which stores a preselected number of the most recent coordinate positions and to a toggle circuit (38) which toggles a preselected bit of the display information stored in the corresponding memory cell of the memory array.
    Type: Grant
    Filed: October 11, 1996
    Date of Patent: May 18, 1999
    Assignee: Xerox Corporation
    Inventors: Alan J. Demers, Ronald A. Frederick, Christian P. Jacobi, Christopher A. Kantarjiev, Robert T. Krivacic, Mark D. Weiser
  • Patent number: 5621435
    Abstract: A computer terminal user interface control is provided for allowing input from an operators non-dominant hand. Force sensitive transducers are provided at right angles to one another. Forces applied to these transducers move a tool set to various sub-portions of a video display device. The user's dominant hand is then free to select from various sub-areas of the tool window positioned by the non-dominant hand in a simple and efficient manner.
    Type: Grant
    Filed: January 27, 1995
    Date of Patent: April 15, 1997
    Assignee: Xerox Corporation
    Inventor: Robert T. Krivacic
  • Patent number: 5611050
    Abstract: The present invention describes a method for superimposing prespecified locational, environmental, and contextual controls on user interactions, including interactions of mobile users, with computational resources. A system is described for electronically monitoring contextual information concerning users and machines, including state and locational information including proximity. Interaction policies, including user specified interaction policies, may be registered on an identifiable address path. Methods are described for detecting, selecting and controlling computercontrolled devices, based on the proximity of the device to the user, the current context of the user, the location of other nearby users and devices, and the current state of the devices. Temporary transfer of control, including exclusive control, of particular computers and computer controlled devices to individual users based on the context and environment in proximity to those computing devices is also described.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 11, 1997
    Assignee: Xerox Corporation
    Inventors: Marvin M. Theimer, Michael J. Spreitzer, Mark D. Weiser, Richard J. Goldstein, Scott A. Elrod, Daniel C. Swinehart, William N. Schilit, Robert T. Krivacic, Roy Want
  • Patent number: 5603054
    Abstract: The present invention describes a method for superimposing prespecified locational, environmental, and contextual controls on user interactions, including interactions of mobile users, with computational resources. A system is described for electronically monitoring contextual information concerning users and machines, including state and locational information including proximity. Interaction policies, including user specified interaction policies, may be registered on an identifiable address path. Methods are described for detecting, selecting and controlling computercontrolled devices, based on the proximity of the device to the user, the current context of the user, the location of other nearby users and devices, and the current state of the devices. Temporary transfer of control, including exclusive control, of particular computers and computer controlled devices to individual users based on the context and environment in proximity to those computing devices is also described.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 11, 1997
    Assignee: Xerox Corporation
    Inventors: Marvin M. Theimer, Michael J. Spreitzer, Mark D. Weiser, Richard J. Goldstein, Scott A. Elrod, Daniel C. Swinehart, William N. Schilit, Robert T. Krivacic, Roy Want
  • Patent number: 5572238
    Abstract: A computer terminal user interface control is provided for allowing input from an operators non-dominant hand. Force sensitive resistor pairs are provided at right angles to one another. Forces applied to these transducers move a tool set to various sub-portions of a video display device. The user's dominant hand is then free to select from various sub-areas of the tool window positioned by the non-dominant hand in a simple and efficient manner.
    Type: Grant
    Filed: January 27, 1995
    Date of Patent: November 5, 1996
    Assignee: Xerox Corporation
    Inventor: Robert T. Krivacic
  • Patent number: 5555376
    Abstract: The present invention describes a method for superimposing prespecified locational, environmental, and contextual controls on user interactions, including interactions of mobile users, with computational resources. A system is described for electronically monitoring contextual information concerning users and machines, including state and locational information including proximity. Interaction policies, including user specified interaction policies, may be registered on an identifiable address path. Methods are described for detecting, selecting and controlling computercontrolled devices, based on the proximity of the device to the user, the current context of the user, the location of other nearby users and devices, and the current state of the devices. Temporary transfer of control, including exclusive control, of particular computers and computer controlled devices to individual users based on the context and environment in proximity to those computing devices is also described.
    Type: Grant
    Filed: December 3, 1993
    Date of Patent: September 10, 1996
    Assignee: Xerox Corporation
    Inventors: Marvin M. Theimer, Michael J. Spreitzer, Mark D. Weiser, Richard J. Goldstein, Scott A. Elrod, Daniel C. Swinehart, William N. Schilit, Robert T. Krivacic, Roy Want
  • Patent number: 5544321
    Abstract: The present invention describes a method for superimposing prespecified locational, environmental, and contextual controls on user interactions, including interactions of mobile users, with computational resources. A system is described for electronically monitoring contextual information concerning users and machines, including state and locational information including proximity. Interaction policies, including user specified interaction policies, may be registered on an identifiable address path. Methods are described for detecting, selecting and controlling computercontrolled devices, based on the proximity of the device to the user, the current context of the user, the location of other nearby users and devices, and the current state of the devices. Temporary transfer of control, including exclusive control, of particular computers and computer controlled devices to individual users based on the context and environment in proximity to those computing devices is also described.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 6, 1996
    Assignee: Xerox Corporation
    Inventors: Marvin M. Theimer, Michael J. Spreitzer, Mark D. Weiser, Richard J. Goldstein, Scott A. Elrod, Daniel C. Swinehart, William N. Schilit, Robert T. Krivacic, Roy Want