Daniel G Bobrow, 88376 Addison Ave, Palo Alto, CA 94301

6340965, Jan 22, 2002

Mar 18, 1999

09/271373

Matthew E. Howard - San Francisco CA
David K. Biegelsen - Portola Valley CA
Daniel G. Bobrow - Palo Alto CA
L. Charles Hebel - Cupertino CA
Jock D. Mackinlay - Palo Alto CA
Nicholas K. Sheridon - Los Altos CA
Alexander E. Silverman - Menlo Park CA

Xerox Corporation - Stamford CT

G09G 334

345107, 345 84, 345 85, 345 86, 345111, 345 88, 359296, 359298

Selected regions of an electronically modifiable display are fixed while other regions are left electronically modifiable. The selected regions are fixed by various methods including subjecting the selected regions to heat, light or pressure. In some embodiments, the fixed regions are reversibly fixed so that changes can be made to the fixed regions.

6419618, Jul 16, 2002

Oct 31, 2000

09/699426

Jock D. Mackinlay - Palo Alto CA
Daniel G. Bobrow - Palo Alto CA
Daniel H. Greene - Sunnyvale CA
L. Charles Hebel - Cupertino CA
Nicholas K. Sheridon - Los Altos CA
Craig A. Smith - Pittsford NY
William C. Emerson - Rochester NY

Xerox Corporation - Stamford CT

B31B 4900

493379, 493 76, 428206, 428323, 428211, 4284111

Tamper-evident electric paper is made of two sheets of electric paper bonded together, the bottom sheet of which includes a pattern. Any attempt to erase a writing on the top sheet of electric paper results in the pattern on the bottom sheet of electric paper being erased. Therefore any tampering by erasure of a writing on the tamper-evident electric paper is revealed by the absence of a portion of the pattern on the bottom sheet of electric paper. Single sheet tamper-evident electric paper has a complex pattern, such as an encryption, printed on a single sheet of electric paper. Any attempt to erase a writing on the electric paper also erases a portion of the encryption, thereby providing evidence of tampering.

6529285, Mar 4, 2003

Jun 18, 2001

09/884418

Daniel G. Bobrow - Palo Alto CA
Daniel P. Huttenlocher - Ithaca NY
William J. Rucklidge - Mountain View CA
John Seely Brown - Palo Alto CA

Xerox Corporation - Stamford CT

G06M 1500

358 112

A processor is provided with a first set of digital information that includes a first structured representation of a document. From the first set of digital information, the processor produces a second set of digital information that includes a second structured representation of the document. The second structured representation is a lossless representation and includes a set of tokens and a set of positions. At least one token in the plurality of tokens has an associated semantic label which may be a character code associated with various font types in the second structured representation of the document. The semantic label may be obtained and stored in the second structured representation of the document by a computer program. The first and second representations may be resolution dependent structured representations and have, respectively, first and second characteristic resolutions. The first representation, but not the second, is provided in digital form to an untrusted recipient.

6554276, Apr 29, 2003

Mar 30, 2001

09/822690

Warren B. Jackson - San Francisco CA
David Kalman Biegelsen - Portola Valley CA
Daniel G. Bobrow - Palo Alto CA

Xerox Corporation - Stamford CT

B65H 3910

271301, 271 65, 271186

A flexible sheet handling apparatus comprising an input section for receiving the flexible sheet, a reversion section for rotating the flexible sheet about an axis of motion and an output section for transferring the rotated flexible sheet to a sheet processing system.

6562077, May 13, 2003

Nov 14, 1997

08/970507

Daniel G. Bobrow - Palo Alto CA
James V. Mahoney - Los Angeles CA
William J. Rucklidge - Mountain View CA

Xerox Corporation - Stamford CT

G06F 700

715517, 715500, 715530, 382306

A programming interface of document search system enables a user to dynamically specifying features of documents recorded in a corpus of documents. The programming interface provides category and format flexibility for defining different genre of documents. The document search system initially segments document images into one or more layout objects. Each layout object identifies a structural element in a document such as text blocks, graphics, or halftones. Subsequently, the document search system computes a set of attributes for each of the identified layout objects. The set of attributes are used to describe the layout structure of a page image of a document in terms of the spatial relations that layout objects have to frames of reference that are defined by other layout objects. Using the set of attributes a user defines features of a document with the programming interface. After receiving a feature or attribute and a set of document images selected by a user, the system forms a set of image segments by identifying those layout objects in the set of document images that make up the selected feature or attribute.

6607320, Aug 19, 2003

Mar 30, 2001

09/822688

Daniel G. Bobrow - Palo Alto CA
Warren B. Jackson - San Francisco CA
David Kalman Biegelsen - Portola Valley CA

Xerox Corporation - Stamford CT

M41J 1150

400188

An apparatus for processing a substrate on two sides. A substrate has a first edge as a leading edge in a process direction and a first side in a face-up orientation. In one embodiment, the apparatus comprises an input pathway for receiving the substrate from a substrate processing station, a station for processing the face-up side of the substrate, a reversion pathway for reverting the substrate and returning the reverted substrate to the input pathway. After reversion, a second side of the substrate is in the face up orientation and the first edge is the leading edge. A merge point merges the reverted substrate into the input pathway for processing the face-up side of the substrate in the print station.

6665841, Dec 16, 2003

Nov 14, 1997

08/971020

James V. Mahoney - Los Angeles CA
Daniel G. Bobrow - Palo Alto CA
William J. Rucklidge - Mountain View CA

Xerox Corporation - Stamford CT

G06F 700

715520, 715517, 715526

In a document search and retrieval system, document images are segmented into layout objects. Each layout object identifies different structural elements in a document image. In addition, the system computes attributes and features for each segmented layout object. Before any document images are transmitted between a client and a server, users specify which document image attributes and features are most relevant to their browsing or searching tasks. Transmission (and/or display) of document images is then divided into two stages. During the first stage, those layout objects which are identified as having the specified features or attributes are transmitted at a first or high resolution; the remaining layout objects in an image are transmitted at a second or lower resolution (or in the form of bounding polygons). If the second stage is invoked, those remaining layout objects are re-transmitted at the first or high resolution. The second stage of transmission may be invoked when either a user request is received or when there is a system timeout.

6856432, Feb 15, 2005

Dec 8, 2000

09/733160

Daniel Gureasko Bobrow - Palo Alto CA, US
Larry Melvin Masinter - Los Altos CA, US

Xerox Corporation - Stamford CT

H04N001/00

358402, 358407, 358442, 358462, 382317, 382232

A method, apparatus and computer-readable medium for converting messages includes stations coupled to facsimile devices and to client machines by a network to allow users at the client machines to communicate with users at the facsimile devices. In addition, the stations include processors for extracting information from messages sent by users at the facsimile devices and received by the stations, using the extracted information to convert the messages, and sending the converted messages through the network to the users at the client machines.