Patents by Inventor Peter L. T. Pirolli

Peter L. T. Pirolli 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: 20040073514
    Abstract: A method for providing limited printing of a digital work having one or more rights associated therewith within a system having at least one repository configured to enforce use of the digital work in accordance with the rights. A limited printing right, or other rights, can be associated with a digital work. The limited printing right specifies a type of printer and type of ticket required for exercising the limited printing right of the digital work for a limited printing fee. A copy of the digital work is distributed along with the ticket to a consumer. The limited printing fee is reported as a transaction in response to the consumer exercising the limited printing right.
    Type: Application
    Filed: June 5, 2003
    Publication date: April 15, 2004
    Applicant: ContentGuard Holdings, Inc.
    Inventors: Mark J. Stefik, Peter L. T. Pirolli
  • Publication number: 20040064417
    Abstract: Method for providing database content usage. The database content can be a digital work having one or more rights associated therewith. The method can be effected within a system having at least one repository configured to enforce use of the content in accordance with the one or more usage rights. A usage right is associated with database content, the usage right specifying rights for the usage of database content and usage fees for exercise of such usage. The database content is provided in accordance with the usage right, and the usage fees are reported as a transaction.
    Type: Application
    Filed: June 18, 2003
    Publication date: April 1, 2004
    Applicant: XEROX CORPORATION
    Inventors: Mark J. Stefik, Peter L.T. Pirolli
  • Patent number: 6714921
    Abstract: A system for controlling the distribution and use of digital works using digital tickets. In the present invention, a “digital ticket” is used to entitle the ticket holder to exercise some usage right with respect to a digital work. Usage rights are used to define how a digital work may be used or distributed. Each usage right may specify a digital ticket which must be present before the right may be exercised. Digital works are stored in repositories which enforce a digital works usage rights. Each repository has a “generic ticket agent” which punches tickets. In some instances only the generic ticket agent is necessary. In other instances, punching by a “special ticket agent” residing on another repository may be needed.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: March 30, 2004
    Assignee: ContentGuard, Inc.
    Inventors: Mark J. Stefik, Peter L. T. Pirolli
  • Publication number: 20040059678
    Abstract: A method for facilitating distribution of a digital work within a system having at least one repository configured to enforce use of said digital work in accordance with rights. The digital work has one or more rights associated therewith. A copy right or other right is associated with a digital work. The copy right specifies a fee to be paid as a condition for the repository permitting a specified use of the digital work to be made. The digital work can be provided to a distributor for distribution to at least one other party. The fee is reported as a transaction in response to a distribution of said digital work.
    Type: Application
    Filed: June 5, 2003
    Publication date: March 25, 2004
    Inventors: Mark J. Stefik, Peter L. T. Pirolli
  • Patent number: 6708157
    Abstract: A system for controlling the distribution and use of digital works using digital tickets. In the present invention, a “digital ticket” is used to entitle the ticket holder to exercise some usage right with respect to a digital work. Usage rights are used to define how a digital work may be used or distributed. Each usage right may specify a digital ticket which must be present before the right may be exercised. Digital works are stored in repositories which enforce a digital works usage rights. Each repository has a “generic ticket agent” which punches tickets. In some instances only the generic ticket agent is necessary. In other instances, punching by a “special ticket agent” residing on another repository may be needed.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: March 16, 2004
    Assignee: ContentGuard Holdings Inc.
    Inventors: Mark J. Stefik, Peter L. T. Pirolli
  • Publication number: 20040015446
    Abstract: A digital work recorded on a computer readable media for use within a system having at least one repository for enforcing use of digital content in accordance with usage rights associated with the digital content. The digital work includes digital content electronically recorded on a first media portion and being capable of being rendered by a rendering engine, and usage rights electronically recorded on a second media portion and being associated with the digital content. The usage rights specify a manner of use by which a repository will permit use of the digital content. The usage rights can be constructed of a grammar including symbols selected from a set of predetermined symbols which define a valid sequence of symbols that are interpreted by the repository to indicate the manner of use.
    Type: Application
    Filed: July 14, 2003
    Publication date: January 22, 2004
    Applicant: CONTENTGUARD HOLDINGS, INC.
    Inventors: Mark J. Stefik, Peter L.T. Pirolli
  • Publication number: 20030217010
    Abstract: A method for loaning a digital work having one or more rights associated therewith within a system having repositories configured to enforce use of the digital work in accordance with the rights. A loan right is associated with a digital work and specifies how the digital work can be loaned. If a request for the digital work is valid, use of the digital work is transferred during a loan period from a repository to the requester in accordance with the loan. Loan right data for the digital work is then updated and use of the digital work by the requestor is deactivated upon exhaustion of the loan period.
    Type: Application
    Filed: June 18, 2003
    Publication date: November 20, 2003
    Applicant: XEROX CORPORATION
    Inventors: Mark J. Stefik, Peter L.T. Pirolli
  • Publication number: 20030208447
    Abstract: A trusted system having at least one repository for controlling use of digital works in accordance with usage rights associated with the digital works. A request to use a digital work in accordance with usage rights associated with the digital work is received. The usage rights specify a manner of use and an access specification indicating a security class. A security level of a repository controlling the requested use is determined. The request is granted and the user is permitted to exercise the manner of use specified in the usage rights associated with the digital work if the security level of the repository corresponds to the security class of the access specification specified in the usage rights associated with the digital work.
    Type: Application
    Filed: June 18, 2003
    Publication date: November 6, 2003
    Applicant: Xerox Corporation
    Inventors: Mark J. Stefik, Peter L.T. Pirolli
  • Publication number: 20030195944
    Abstract: Systems and methods measure the navigability of a web site by determining the rate at which simulated users absorb information scent. This note can be viewed as a measurement of accomplishing the users' information goals. As users reach their target information, the users terminate their navigation in the web site. Thus, the rate at which users finish is a measurement of the navigability of the web site.
    Type: Application
    Filed: April 12, 2002
    Publication date: October 16, 2003
    Inventors: Ed H. Chi, Peter L.T. Pirolli
  • Publication number: 20030167236
    Abstract: A method and system for creating a new digital work from one or more existing digital works having parts. A first part of a digital work has first usage rights associated therewith, the first usage rights specifying a particular manner of use for the first part. A second part of a digital work has second usage rights associated therewith, the second usage rights specifying a particular manner of use for the second part. A new digital work is created by combining the first part and the second part as new content and associating new usage rights with the new content. The new usage rights specify a particular manner of use for the new digital work.
    Type: Application
    Filed: March 31, 2003
    Publication date: September 4, 2003
    Applicant: CONTENTGUARD HOLDINGS, INC.
    Inventors: Mark J. Stefik, Peter L.T. Pirolli
  • Patent number: 6601021
    Abstract: Methods and Systems for analyzing data of a user viewing a display of dynamic hypermedia pages through a browser including monitoring and storing location and time of the user's gaze as eyetracker data, processing the eyetracker data into fixation data, monitoring and storing content of the displayed pages into a memory, restoring the displayed pages from the memory, mapping the fixations data onto the restored pages to thereby identify elements-of-regard, and storing the identified elements-of-regard in an elements-of-regard database.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: July 29, 2003
    Assignee: Xerox Corporation
    Inventors: Stuart K. Card, Peter L. T. Pirolli, Robert W. Reeder
  • Publication number: 20030115144
    Abstract: A digital work for use within a rights management system for controlling use of the digital work in accordance with usage rights. The work is organized into an acyclic structure and includes a contents file including information related to content that can be interpreted by an interpreter, and a description tree file including descriptor blocks organized in a hierarchical manner. At least some of the descriptor blocks contain usage rights associated with the content. The usage rights specify a manner of use for the content.
    Type: Application
    Filed: February 6, 2003
    Publication date: June 19, 2003
    Inventors: Mark J. Stefik, Peter L.T. Pirolli
  • Publication number: 20030023561
    Abstract: A system for controlling the distribution and use of digital works using digital tickets. In the present invention, a “digital ticket” is used to entitle the ticket holder to exercise some usage right with respect to a digital work. Usage rights are used to define how a digital work may be used or distributed. Each usage right may specify a digital ticket which must be present before the right may be exercised. Digital works are stored in repositories which enforce a digital works usage rights. Each repository has a “generic ticket agent” which punches tickets. In some instances only the generic ticket agent is necessary. In other instances, punching by a “special ticket agent” residing on another repository maybe needed.
    Type: Application
    Filed: June 24, 2002
    Publication date: January 30, 2003
    Inventors: Mark J. Stefik, Peter L.T. Pirolli
  • Patent number: 6509898
    Abstract: A method for generating a tree structure representation of a generalized graph structure for display includes the more important links in the representation. Usage parameters are referenced in generating the tree structure from the generalized graph structure. Frequency, recency, spacing of accesses, and path information are exemplary types of usage parameters. A breadth-first or depth-first traversal of the graph references usage parameters associated with each node or link. The usage parameters which are associated with each node are referenced in order to determine the visitation order. The visitation order is determined by visiting the highest used nodes or links first. A method of displaying the tree structure references the usage parameters to determine the positioning of the nodes in the layout of the tree structure. In a preferred embodiment, the root node is positioned in the center of the layout. In one example, sibling nodes are spread out on links which emanate radially about their parent.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: January 21, 2003
    Assignee: Xerox Corporation
    Inventors: Ed H. Chi, Peter L. T. Pirolli, James E. Pitkow, Rich Gossweller, Jock D. Mackinlay, Stuart K. Card
  • Publication number: 20020130907
    Abstract: A method and system for visualizing actual and predicted usage patterns through a web site is provided. A plurality of web pages may be represented as a node and visualized on a dome tree. The dome tree is a three-dimensional image of a dome, with a portion of the outer wall remove, displayed on a two-dimensional monitor. Paths into and out of each node are displayed using a variety of colors and patterns and information relating to the nodes and paths may also be accessed. By designating a web page as the root node each of the associated pages are laid out within the dome tree radially based on actual usage information. Predicted information for each node is displayed as a bar near the node, thereby assisting a user in understand the relationship between actual and predicted usage patterns.
    Type: Application
    Filed: March 15, 2001
    Publication date: September 19, 2002
    Inventors: Ed H. Chi, Peter L.T. Pirolli, James E. Pitkow
  • Publication number: 20020133465
    Abstract: A system for associating usage rights with digital works, a method for creating usage rights with a grammar, and usage rights created with a grammar. The system includes a mechanism for creating usage rights from a grammar. The usage rights specify a manner of use indicating one or more stated purposes for which the digital work can be at least one of used and distributed by an authorized party. The usage rights are associated with a digital work.
    Type: Application
    Filed: December 17, 2001
    Publication date: September 19, 2002
    Inventors: Mark J. Stefik, Peter L.T. Pirolli
  • Publication number: 20020128972
    Abstract: Digital work adapted to be distributed within a system for controlling at least one of the distribution and use of digital works. The digital work includes: digital content representing a portion of a digital work suitable for being rendered by a rendering device and usage rights associated with the digital content. The usage rights specify a manner of use indicating one or more stated purposes for which the digital work can be at least one of used and distributed by an authorized party.
    Type: Application
    Filed: December 17, 2001
    Publication date: September 12, 2002
    Applicant: CONTENTGUARD HOLDINGS, INC.
    Inventors: Mark J. Stefik, Peter L.T. Pirolli
  • Publication number: 20020128856
    Abstract: A method for creating a composite digital work having usage rights and composite digital works having usage rights. The method comprises creating a digital content portion of a composite digital work including a plurality of content parts, and creating a description structure for the composite digital work. The description structure comprises a plurality of description blocks containing usage rights associated with at least a corresponding at least one of said content parts. The usage rights specify a manner of use for the corresponding one of the content parts. The manner of use indicates one or more stated purposes for which the corresponding digital content portion can be at least one of used and distributed by an authorized user.
    Type: Application
    Filed: December 17, 2001
    Publication date: September 12, 2002
    Inventors: Mark J. Stefik, Peter L.T. Pirolli
  • Publication number: 20020103625
    Abstract: Methods and Systems for analyzing data of a user viewing a display of dynamic hypermedia pages through a browser including monitoring and storing location and time of the user's gaze as eyetracker data, processing the eyetracker data into fixation data, monitoring and storing content of the displayed pages into a memory, restoring the displayed pages from the memory, mapping the fixations data onto the restored pages to thereby identify elements-of-regard, and storing the identified elements-of-regard in an elements-of-regard database.
    Type: Application
    Filed: December 8, 2000
    Publication date: August 1, 2002
    Applicant: Xerox Corporation
    Inventors: Stuart K. Card, Peter L. T. Pirolli, Robert W. Reeder
  • Publication number: 20020067360
    Abstract: A method for generating a tree structure representation of a generalized graph structure for display includes the more important links in the representation. Usage parameters are referenced in generating the tree structure from the generalized graph structure. Frequency, recency, spacing of accesses, and path information are exemplary types of usage parameters. A breadth-first or depth-first traversal of the graph references usage parameters associated with each node or link. The usage parameters which are associated with each node are referenced in order to determine the visitation order. The visitation order is determined by visiting the highest used nodes or links first. A method of displaying the tree structure references the usage parameters to determine the positioning of the nodes in the layout of the tree structure. In a preferred embodiment, the root node is positioned in the center of the layout. In one example, sibling nodes are spread out on links which emanate radially about their parent.
    Type: Application
    Filed: April 17, 1998
    Publication date: June 6, 2002
    Inventors: ED H. CHI, PETER L. T. PIROLLI, JAMES E. PITKOW, RICH GOSSWELLER, JOCK D. MACKINLAY, STUART K. CARD