Patents Represented by Attorney Tracy L. Hurt
  • Patent number: 5918240
    Abstract: A method of automatically generating document extracts. The method makes use of feature value probabilities generated from a statistical analysis of manually generated summaries to extract the same set of sentences an expert might. The method is based upon an iterative approach. First, the computer system designates a sentence of the document as a selected sentence. Second, the computer system determine values for the selected sentence of each feature of a feature set. Third, the computer system increases a score for the selected sentence based upon the value of the feature for the selected sentence and upon the probability associated with that value. Fourth, after scoring all of the sentences of the document the computer system, the computer system selects a subset of the highest scoring sentences to be extracted.
    Type: Grant
    Filed: June 28, 1995
    Date of Patent: June 29, 1999
    Assignee: Xerox Corporation
    Inventors: Julian M. Kupiec, Jan O. Pedersen, Francine R. Chen, Daniel C. Brotsky, Steven B. Putz
  • Patent number: 5867242
    Abstract: The present invention is a novel pixel structure, and method for making the same, that reduces wasteful voltage drop associated with other pixel structures that cover their pixel elements with a final passivation layer. The presently claimed pixel structure is a combination of a thin film transistor (TFT), an associated pixel element, and a passivation layer. The TFT is first deposited atop a suitable substrate and patterned. Then, the passivation layer is deposited on top of the thin film transistor. Contact cuts are made into the passivation layer where the pixel element is to contact the TFT. Finally, the pixel element is deposited--lying atop the passivation layer and contacting with the underlying TFT where the contact cuts were made in the passivation layer.
    Type: Grant
    Filed: April 1, 1997
    Date of Patent: February 2, 1999
    Assignee: Xerox Corporation
    Inventors: William W. Yao, Ronald T. Fulks
  • Patent number: 5850476
    Abstract: A method of automatically identifying drop words in a document image without performing character recognition to generate an ASCII representation of the document text. First, the document image is analyzed to identify word equivalence classes, each of which represents at least one word of the multiplicity of words included in the document. Second, for each word equivalence class, the likelihood that it is not a drop word is determined. Third, document length is analyzed to determine whether the document is short. For a short document, the number of word equivalence classes identified as drop words based upon their likelihood is proportional to document length. For long documents, a fixed number of word equivalence classes are identified as drop words based upon the likelihood that they are not drop words.
    Type: Grant
    Filed: December 14, 1995
    Date of Patent: December 15, 1998
    Assignee: Xerox Corporation
    Inventors: Francine R. Chen, John W. Tukey
  • Patent number: 5835975
    Abstract: A sensor system for measuring physical properties of paper. The paper property sensor system includes a surface and a diaphragm opposed to each other. The small diaphragm includes a first pair and a second pair p-type piezoresistors. Each piezoresistor of the first pair has a longitudinal axis and is located perpendicular to and very close to one of the long edges of the diaphragm. Each piezoresistor of the second pair has a longitudinal axis and is located between and parallel to first pair of piezoresistors, and away from the short edges of the diaphragm. Coupling the first pair of piezoresistors with the second pair via a Wheatstone bridge produces a voltage representative of the shear force exerted by a sheet.
    Type: Grant
    Filed: June 19, 1996
    Date of Patent: November 10, 1998
    Assignee: Xerox Corporation
    Inventors: Eric Peeters, Joel A. Kubby, Fred F. Hubble, III, Stanley J. Wallace, Alan J. Werner, Jr., R. Enrique Viturro
  • Patent number: 5819210
    Abstract: A method of unifying edge data structures using a processor. The method begins with creation of a first edge data structure and unifying it with a second edge data structure. If during unification any of the contexted lazy copy links associated with the second graph data structure are activated, then second graph data structure is expanded. Expansion involves first selecting a contexted lazy copy link from among the contexted lazy copy links associated with the second graph data, selecting a selected attribute from the subtree feature structure pointed to by the selected contexted lazy copy link, making a copy of the selected attribute and storing the copy of the selected attribute in the second graph data structure as a second attribute, and adding a contexted lazy copy link from the second attribute to the selected attribute value.
    Type: Grant
    Filed: June 21, 1996
    Date of Patent: October 6, 1998
    Assignee: Xerox Corporation
    Inventors: John T. Maxwell, III, Ronald M. Kaplan
  • Patent number: 5812865
    Abstract: The present invention describes a system of multiple devices and multiple users, wherein the identity and location of each device and user may be known to the system. A method is described for establishing media connections between at least a first user and a second user based on the context of the system and the environment of the particular device, computing devices, or users. The system receives a media connection request from the first user, including information indicating the first user preferences for media, and identifies the intended recipient user or users. The location and media devices in proximity to each of the users is determined, and the preset profiles and policies of the users involved are determined. Each user may specify acceptable media connections and contextual attributes. When the contextual attributes and acceptable media connections for each user are consistent, media device communications paths are established.
    Type: Grant
    Filed: March 4, 1996
    Date of Patent: September 22, 1998
    Assignee: Xerox Corporation
    Inventors: Marvin M. Theimer, Michael J. Spreitzer, Mark D. Weiser, Richard J. Goldstein, Daniel C. Swinehart, William N. Schilit, Roy Want
  • Patent number: 5787420
    Abstract: A computerized method of ordering document clusters for presentation after browsing a corpus of documents that presents document clusters in a logical fashion in the absence of any indication of the computer user's interests. The method begins by grouping the corpus into a plurality of clusters, each having a centroid and including at least one document. Next, for each cluster a degree of similarity between that cluster and every other cluster is by finding a dot product between each cluster centroid and every other cluster centroid. The similarity information is then used to determine an order of presentation for the plurality of in a way that maximizes the degree of similarity between adjacent clusters.
    Type: Grant
    Filed: December 14, 1995
    Date of Patent: July 28, 1998
    Assignee: Xerox Corporation
    Inventors: John W. Tukey, Jan O. Pedersen
  • Patent number: 5778397
    Abstract: A method of automatically generating feature probabilities that allow later automatic generation of document extracts. The computer system generates the probabilities by analyzing each document a document at a time. First, the computer system designates one of the documents as a selected document. Next, the computer system analyzes each sentence of the selected document to determine the value of the paragraph feature and the value of the uppercase feature. The computer system repeats this effort for each document of the document corpus. Afterward, the number of occurrences of each value of each feature is calculated and is used to calculate feature value probabilities for all of the features.
    Type: Grant
    Filed: June 28, 1995
    Date of Patent: July 7, 1998
    Assignee: Xerox Corporation
    Inventors: Julian M. Kupiec, Jan O. Pedersen, Francine R. Chen, Daniel C. Brotsky, Steven B. Putz
  • Patent number: 5751855
    Abstract: A method of recognizing the effects of coarse pixel quantization on text represented via raster signals to enable automatic selection between fax and normal modes of optical character recognition. A processor executes instructions stored in a memory to trace the contours of connected components included within a sample image and to count the number of runs one, two, and three pixels in length along the contour. If the sample image includes few runs two pixels in lengths along the contours of its connected components as compared to the number of runs one and three pixels in length, then the sample image has undergone coarse pixel quantization and the processor selects fax mode optical character recognition.
    Type: Grant
    Filed: December 1, 1994
    Date of Patent: May 12, 1998
    Assignee: Xerox Corporation
    Inventor: Eric Saund
  • Patent number: 5745596
    Abstract: A computer-implemented method of highlighting text regions within a first scan line signal including image regions. Text/image segmentation begins by identifying a set of edges of a possible text region within the scan line signal. Next, without reference to a second scan line signal, it is determined whether the set of edges of the possible text region first form a text region. If the set of edges form a text region, then the average pel intensity value of the text region is calculated. Afterward, the intensity values of those pels within the text region whose values differ from the average are modified.
    Type: Grant
    Filed: May 1, 1995
    Date of Patent: April 28, 1998
    Assignee: Xerox Corporation
    Inventor: Darrell E. Jefferson
  • Patent number: 5744732
    Abstract: A system for transporting a sheet of material including an actuator, a position sensing system, and a tactile sensor system. The actuator imparts a known force to a sheet, moving it through to the position sensing system, which measures the sheet velocity at various points. Afterward, the sheet moves through the tactile sensor system, which determines the coefficient of friction of the sheet. Given these quantities, a controller can determine the mass of the sheet, which can be used alter the performance of the sheet transport system.
    Type: Grant
    Filed: March 5, 1997
    Date of Patent: April 28, 1998
    Assignee: Xerox Corporation
    Inventors: Joel A. Kubby, Eric Peeters, R. Enrique Viturro, Fred F. Hubble, III, Stanley J. Wallace, Alan J. Werner, Jr., Warren B. Jackson, David K. Biegelsen, Lars-Erik Swartz, Raj B. Apte, Robert A. Sprague, James G. Chase
  • Patent number: 5745156
    Abstract: A digital printer for printing images in response to full-frame, two-dimensional digital image data input from an outside source. The digital printer is a novel combination of a two dimensional backlight for producing full frame illumination in a single flash, a photoreceptor sensitive to light emanating from the backlight, a two-dimensional, transmissive light valve, an imaging system, and a driver. The light valve is disposed between the backlight and the photoreceptor so that light from the backlight is transmitted through the light valve, producing a full-frame, two dimensional image on the photoreceptor in response to a single flash of the backlight. The full-frame, two dimensional image corresponds to a pattern formed on the light valve in response to the full-frame, two dimensional digital image data. The imaging system is disposed between the light valve and the photoreceptor, such that it focuses the full-frame, two dimensional image onto the photoreceptor.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: April 28, 1998
    Assignee: Xerox Corporation
    Inventors: Anthony M. Federico, William L. Valentine, William D. Turner
  • Patent number: 5745602
    Abstract: An automatic method of generating key phrases for a machine readable document. The method begins by breaking the text of the document into multi-word phrases free of stop words which begin and end acceptably. Afterward, the most frequent phrases are selected as key word phrases.
    Type: Grant
    Filed: May 1, 1995
    Date of Patent: April 28, 1998
    Assignee: Xerox Corporation
    Inventors: Francine R. Chen, Steven B. Putz, Daniel C. Brotsky
  • Patent number: 5727222
    Abstract: A method of unifying feature structures using disjunctive lazy copy links. The method begins with unification of two daughter feature structures to generate their mother feature structure. Lazy copy links point from the mother feature structure back to her daughter feature structures. If unification activates any of these lazy copy links, then a selected one of the two daughter feature structures is expanded. Expansion of a disjunctive feature structure may generate a number of alternative feature structures. If so, the alternative feature structures are examined to determine if their number can be reduced by replacing multiple feature structures with one feature structure having multiple disjunctive lazy copy links, each disjunctive lazy copy link pointing to an alternative value. Two or more feature structures can be merged together if they have the same attributes and attribute values. Unification of the two daughter feature structures then resumes, an attribute at a.
    Type: Grant
    Filed: December 14, 1995
    Date of Patent: March 10, 1998
    Assignee: Xerox Corporation
    Inventor: John T. Maxwell, III
  • Patent number: 5717955
    Abstract: The present invention describes a method for superimposing general usage interface characteristics upon a computing device configured with specialized interface characteristics to enable the particular computing device to control general purpose computing functions. The user may also establish control of a portion of the display of a particular computing device. The computing system may include multiple computing devices, users, and subsystems that may be controlled by control devices. A first event signals a request for a change of the particular computing device from specialized interface characteristics to general interface characteristics unrelated to the specialized interface, and the particular computing device is reconfigured to general interface characteristics. Control of the device may also be based on the context of the system and the environment of the particular device.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: February 10, 1998
    Assignee: Xerox Corporation
    Inventor: Daniel C. Swinehart
  • Patent number: 5714697
    Abstract: A system for measuring the mass of a sheet of material including an actuator, a position sensing system, and a tactile sensor system. The actuator imparts a known force to a sheet, moving it through to the position sensing system, which measures the sheet velocity at various points. Afterward, the sheet moves through the tactile sensor system, which determines the coefficient of friction of the sheet. Given these quantities, a controller can determine the mass of the sheet, which can be used alter the performance of a reproductive machine. A second embodiment of the mass measuring system includes an actuator, a position sensing system, and a subsystem for eliminating friction. The actuator applies a force to a sheet to move it into and through the subsystem. The position sensing system incorporated in the subsystem senses the acceleration of the sheet. Given this quantity, a controller can determine the mass of the sheet.
    Type: Grant
    Filed: June 19, 1996
    Date of Patent: February 3, 1998
    Assignee: Xerox Corporation
    Inventors: Joel A. Kubby, Eric Peeters, R. Enrique Viturro, Fred F. Hubble, III, Stanley J. Wallace, Alan J. Werner, Jr., Warren B. Jackson, David K. Biegelsen, Lars-Erik Swartz, Raj B. Apte, Robert A. Sprague, James G. Chase
  • Patent number: D396455
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: July 28, 1998
    Assignee: Xerox Corporation
    Inventor: Eric A. Bier
  • Patent number: D396456
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: July 28, 1998
    Assignee: Xerox Corporation
    Inventor: Eric A. Bier
  • Patent number: D396709
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: August 4, 1998
    Assignee: Xerox Corporation
    Inventor: Eric A. Bier
  • Patent number: D397101
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: August 18, 1998
    Assignee: Xerox Corporation
    Inventor: Eric A. Bier