Hewlett Packard Patents

HP Inc. (formerly Hewlett-Packard Company) serves individuals, small- and medium-sized businesses, and large enterprises, including government, healthcare and educational clients. Its products and services include personal computing devices, imaging and printing products, and enterprise IT infrastructure, consulting, solutions and support.

Hewlett Packard Patents by Type
  • Patent number: 6856423
    Abstract: A system and method for scanning a medium and reproducing an image of the medium includes a first scanner adapted to scan a first side of the medium and a second scanner adapted to scan a second side of the medium. As such, the first scanner detects one of a presence and an absence of a first image on the first side of the medium and the second scanner detects one of a presence and an absence of a second image on the second side of the medium.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: February 15, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Bradley J. Anderson, William I. Herrmann
  • Patent number: 6856778
    Abstract: A system and method for recycling used hydrocarbon-based carrier liquid removes contaminants from the used carrier liquid and monitors an electrical property of the output carrier liquid so that the carrier liquid can be reused in a predefined application, such as an electrostatic imaging process. The system and method may be integrated into an electrostatic imaging machine.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: February 15, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: David S. Vejtasa, Christopher A. Schantz
  • Patent number: 6854287
    Abstract: A system and method for cooling a room configured to house a plurality of computer systems. A heat exchanger unit is configured to receive air from the room and to deliver air to the room. The heat exchanger unit is supplied with cooling fluid operable to cool the received air in the heat exchanger unit. At least one of the temperature of the cooling fluid supplied to the heat exchanger unit and the air delivery to the room may be controlled in response to temperatures sensed at one or more locations in the room.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: February 15, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Chandrakant D. Patel, Cullen E. Bash
  • Patent number: 6856994
    Abstract: A method is disclosed for condensing an executable computer code for execution on a virtual machine. The method comprises condensing a first computer code of a plurality of system classes into a base file and condensing an application file. Condensing the first computer code is performed in a data processing environment external of the virtual machine. Condensing the application file is performed in a data processing environment external of the virtual machine and includes replacing each occurrence of one of the system classes in the application file with an external index reference to a respective system class in the condensed base file.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: February 15, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Laura J. Dickey
  • Patent number: 6857040
    Abstract: A bridge device couples together two buses in which more than one device at a time can assert a bus signal. The bridge includes comparators to drive or assert signals on one bus only if the signal is being asserted by the corresponding signal on the other of said buses. That is, the bridge does not drive a signal on a bus that is already being actively driven by a device coupled to that same bus. However, if a device coupled to the other of the buses drives the signal, then the comparator does drive the signal. The bridge preferably includes one such comparator for each bus signal on both buses. The bridge is particularly well-suited for use in bridging I2C buses.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: February 15, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Robert L. Noonan, Theodore F. Emerson
  • Patent number: 6856860
    Abstract: A method of distributing mail includes electronically transmitting a print job, and a list of postal addresses of multiple recipients to which the print job is desired to be delivered, from a users location; providing a printer in a postal delivery vehicle; and printing out mail pieces from the print job, for at least some of the multiple recipients, on the printer in the postal delivery vehicle. Alternative methods and various systems for distributing mail are also provided.
    Type: Grant
    Filed: July 2, 2003
    Date of Patent: February 15, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Gary Glen Stringham, Lawrence Bert Newell, Jr.
  • Patent number: 6857086
    Abstract: In the present invention, a coordinated hierarchy of timing mechanisms preferably cooperate to report errors at different operational levels of a complex of computing devices. Preferably, each timer is able to identify a failure condition at its own level of operation and transmit a time-out condition to a higher level device which may also be a timer. Upon generation of a time-out condition, a system component experiencing a fault condition preferably continues to operate in a degraded mode, informs devices attempting to communicate with the faulty component of a status of the fault condition, and preferably proceeds to identify and correct a failure which caused the time out condition. The timers may be implemented in hardware or software.
    Type: Grant
    Filed: April 21, 2003
    Date of Patent: February 15, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Mark Shaw
  • Patent number: 6851787
    Abstract: A printer includes at least one ink applicator supported in a medium-facing position in which the applicator is adapted to face the print medium when the medium is in a transport path and a first servicing tool outside the transport path and facing the at least one ink applicator, while the at least one ink applicator is in the medium-facing position. In one embodiment, the printer includes a medium transport configured to move the medium relative to the at least one ink applicator, wherein the medium transport includes the first servicing tool.
    Type: Grant
    Filed: March 6, 2003
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Bruce G. Johnson
  • Patent number: 6853476
    Abstract: A charge control circuit for controlling a micro-electromechanical device having a variable capacitance is disclosed. In one embodiment, a charge storage device is configured to store a charge amount. A switch circuit is configured to control the variable capacitance of the micro-electromechanical device by sharing the charge amount between the charge storage device and the micro-electromechanical device to equalize the charge storage device and the micro-electromechanical device to a same voltage.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Eric T. Martin, Adam L. Ghozeil, Arthur Piehl, James R. Przybyla
  • Patent number: 6851785
    Abstract: A systems and method for printer calibration creates linearization tables by receiving optical density related measurements for a primary ink in a group of one or more print heads printing with the primary ink, selecting from the group of print heads at least two print heads that deliver a range of optical densities when printing with the one or more primary ink, generating prebuilt linearization tables corresponding to the at least two print heads that compensate for different ink drop weights printed by the at least two print heads, and providing the prebuilt linearization tables and at least a portion of the optical density related measurements to a calibration routine that interpolates the prebuilt linearization tables to create an actual linearization table for the primary ink printed by a print head.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Yifeng Wu, Philip Cowan, Dongli Yang
  • Patent number: 6851800
    Abstract: A single-piece print cartridge body is provided. The print cartridge has a plurality of outlet ports disposed along a single axis that is substantially perpendicular to a direction of motion of the print cartridge body during printing. First and second compartments are respectively communicatively coupled to first and second cavities. The first and second cavities are substantially parallel to the single axis and are located on opposite sides of the single axis. A first channel interconnects the first cavity and a first one of the plurality of outlet ports. A second channel interconnects the second cavity and a second one of the plurality of outlet ports. The first and second channels are substantially perpendicular to the single axis.
    Type: Grant
    Filed: July 29, 2003
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Preston Seu
  • Patent number: 6853948
    Abstract: Representative embodiments provide for an imaging apparatus including a controller, a first imaging engine and a second imaging engine, each coupled with the controller and configured to form images on sheet media, and a nip assembly configured to pass a sheet media. The imaging apparatus including a circuit electrically coupled to the nip assembly and coupled with the controller, the circuit configured to provide a length signal to the controller corresponding to a length of a sheet media passed through the nip assembly, and wherein the controller is configured to control normal operation of the second imaging engine in correspondence to the length signal. Also provided is a method, including imaging a first side of a sheet media, passing the sheet media through a nip assembly, determining a length of the sheet media, and selectively imaging a second side of the sheet media in correspondence to the length.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Robert W. Jewell
  • Patent number: 6851786
    Abstract: A printer has a print head with multiple nozzles and firing elements for corresponding nozzles. The print head receives one or more power supply inputs to operate the firing elements. The print head has power supply fault protection circuitry to guard against harmful and destructive effects on firing resistors resulting from power supply fluctuations. The power supply fault protection circuitry is integrated into a pen-based chip that also forms the firing elements and optionally the firing logic.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jeffrey S. Beck, Adam L. Ghozeil
  • Patent number: 6851910
    Abstract: Cartridge-handling apparatus for use in a media storage system. According to an embodiment of the invention, the cartridge-handling apparatus may comprise a platform mounted in the media storage system and movable along a displacement path defined therein. A carriage is mounted to the platform and rotatable about a line normal to the displacement path. In addition, a cartridge-engaging assembly is mounted to the carriage, and faces different directions when the carriage is so rotated. A lift system operatively associated with the cartridge-engaging assembly is provided for vertically positioning the cartridge-engaging assembly relative to the carriage.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Robert Wesley Luffel
  • Patent number: 6853478
    Abstract: A molecular light valve mechanism is used for imaging on an adjacent pixel-patterned construct. An electrical fringe field or through field is used to transform targeted pixels by switching light valve molecules between a first non-transparent state and transparent state, providing information content on the adjacent pixel-patterned imaging layer.
    Type: Grant
    Filed: June 13, 2002
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Kent D. Vincent, Xiao-An Zhang, R. Stanley Williams
  • Patent number: 6853577
    Abstract: An electrochromic molecular colorant and a plurality of uses as an erasably writeable medium. Multitudinous types of substrates, such as paper, are adaptable for receiving a coating of the colorant. Electrical fringe field or through fields are used to transform targeted pixel molecules between a first, high color state and transparent state, providing information content having resolution and viewability at least equal to hard copy document print. The scope of the invention includes both the liquid coating and the combination of coating on substrate.
    Type: Grant
    Filed: October 3, 2002
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Kent D. Vincent, Xiao-An Zhang, R. Stanley Williams
  • Patent number: 6854075
    Abstract: A simultaneous and redundantly threaded, pipelined processor executes the same set of instructions simultaneously as two separate threads to provide fault tolerance. One thread is processed ahead of the other thread so that the instructions in one thread are processed through the processor's pipeline ahead of the corresponding instructions from the other thread. The thread, whose instructions are processed earlier, places its committed stores in a store queue. Subsequently, the second thread places its committed stores in the store queue. A compare circuit periodically scans the store queue for matching store instructions. If otherwise matching store instructions differ in any way (address or data), then a fault has occurred in the processing and the compare circuits initiates fault recovery. If comparison of the two instructions reveals they are identical, the compare circuit allows only a single store instruction to pass to the data cache or the system main memory.
    Type: Grant
    Filed: April 19, 2001
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Shubhendu S. Mukherjee, Steven K. Reinhardt
  • Patent number: 6851670
    Abstract: A paper tray assembly for providing imaging media to an imaging apparatus, includes a base cassette and an insert cassette. The base cassette defines a first receptacle to receive at least a portion of the insert cassette, and the insert cassette defines a second receptacle to receive the imaging media.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Douglas John Todd
  • Patent number: 6851792
    Abstract: A method of one embodiment of the invention is disclosed that ejects fluid over a current swath of media in one pass by a first fluid-ejection component, according to a first intended pass of a multiple-pass approach for the current swath. Fluid is also ejected over the current swath of media in the one pass by a second fluid-ejection component, according to a second intended pass of the multiple-pass approach for the current swath.
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Kurt Thiessen, Antoni Murcia
  • Patent number: 6851668
    Abstract: A representative embodiment provides for a sheet media level detection system, including a first level detector configured to provide a first signal corresponding to a first predetermined level of a first sheet media from a first source within an output tray, and a second level detector configured to provide a second signal corresponding to a second predetermined level of a second sheet media from a second source within the output tray. Another embodiment provides for a method including routing a first sheet media and a second sheet media from respective sources into a common output tray, and issuing a first signal in response to detecting a first predetermined level of the first sheet media using a first level detector, and issuing a second signal in response to detecting a second predetermined level of the second sheet media in the output tray using a second level detector.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Paul K. Mui, Gustavo Guillemin, Roberto Obregon, Russell A. Mendenhall, David J. Arcaro
  • Patent number: 6851878
    Abstract: One embodiment of a positioning system for positioning a sheet of print media within a print media handling mechanism comprises a drive shaft that rotates about a drive shaft axis of rotation; and a drive roller mounted on the drive shaft, the drive roller driven by the drive shaft to rotate about an axis of rotation different from the drive shaft axis of rotation.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Brian D. Hemmerlin
  • Patent number: 6853805
    Abstract: Disclosed herein are various embodiments of a camera and methods associated therewith for notifying a user upon non-conforming separation of a remote from the camera.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Theodore B. Ziemkowski
  • Patent number: 6852554
    Abstract: An emitter has a rapid thermal process (RTP) formed emission layer of SiO2, SiOxNy or combinations thereof. The emission layer formed by rapid thermal processing does not require electroforming to stabilize the film. The RTP grown films are stable and exhibit uniform characteristics from device to device.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Zhizhang John Chen, Sriram Ramamoorthi
  • Patent number: 6853970
    Abstract: A method for the automatic design of processor datapaths operates on an abstract input specification of desired processor operations and their instruction level parallelism and synthesizes a datapath design in machine readable form. A datapath synthesizer automatically designs and synthesizes the processor datapath including the number and types of functional units, the number of read/write ports of the various register files, and the exact connectivity between the register files and the functional units. The heuristics used in the implementation maximize resource sharing and minimize the overall cost in by customizing and sharing functional units and minimizing the number of read/write ports on the register files subject to the specified ILP among operations.
    Type: Grant
    Filed: August 20, 1999
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Shail Aditya Gupta, B. Ramakrishna Rau
  • Patent number: 6854065
    Abstract: A dual power source system includes a first power source and a second power source operably coupled with an electrical device, as well as a switching mechanism capable of selecting between the first and second power sources. An uninterruptible power supply (UPS) is place in line with one of the first and second power sources leading to the electrical device. Sense circuitry is capable of identifying a power failure condition in either the first or second power sources. A controller utilizes signals from the sense circuitry to selectively switch between the first and second power sources while configuring the UPS in a manner of providing for a plurality of operational states that accommodate the electrical device with operational power despite any combination of power failures in the first and second power sources.
    Type: Grant
    Filed: July 30, 2001
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Robert B. Smith, Bradley D. Winick, Edward A Cross
  • Patent number: 6854051
    Abstract: A pipelined, simultaneous and redundantly threaded (“SRT”) processor comprising, among other components, load/store units configured to perform load and store operations to or from data locations such as a data cache and data registers and a cycle counter configured to keep a running count of processor clock cycles. The processor is configured to detect transient faults during program execution by executing instructions in at least two redundant copies of a program thread and wherein false errors caused by incorrectly replicating cycle count values in the redundant program threads are avoided by implementing a cycle count queue for storing the actual values fetched by read cycle count instructions in the first program thread. The load/store units then access the cycle count queue and not the cycle counter to fetch cycle count values in response to read cycle count instructions in the second program thread.
    Type: Grant
    Filed: April 19, 2001
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Shubhendu S. Mukherjee
  • Patent number: 6851874
    Abstract: A blister packaging production line preferably includes an unmarked supply of backing for blister packaging, a printer for selectively printing on the backing and a host system controlling the printer and providing a variety of desired designs to the printer. The design being printed on the backing can be changed on-demand by transmitting a new design from the host system to the printer. Additionally, a blister packaging production line may include an unmarked supply of material backing for blister packaging, a printer for selectively printing on the material and a shaping device for forming recesses in the material that will receive items being blister packaged. The printed design can be of any desired length.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jose M. Gonzalez, Enrique C. Abreu, Angel L. Enriquez, Jorge E. Badillo
  • Patent number: 6851793
    Abstract: A program controls colorant-applying elements (e.g. nozzles) individually, to apply colorants in an order that yields consistent colorant-addressing sequences. In another aspect, the invention inhibits particular elements in particular installments (e.g. printing passes) to produce a fixed color bias between colorants of at least one colorant pair; the other colorant is statistically downweighted to correct the bias. In a third aspect, a printmask-generating program automatically makes a usable mask based on neighborhood and timing constraints; this program is constrained, so as to minimize or eliminate hue shift.
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Sascha de Pe{overscore (n)}a
  • Patent number: 6854043
    Abstract: A memory controller system for processing memory access requests comprising a first memory controller operable to address a first plurality of memory modules a second memory controller operable to address a second plurality of memory modules, the first and second memory controllers configurable to process a memory transaction in an operational mode of the memory controller system selected from the group consisting of an independent cell mode, a multiplexer-mode (mux-mode), and a lockstep mode, and a bus interface block operable to convey the memory transaction to both of the first and second memory controllers is provided.
    Type: Grant
    Filed: July 5, 2002
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jeff G. Hargis, George Thomas Letey, Michael Kennard Tayler
  • Patent number: 6853835
    Abstract: A wireless communication system and method are provided, where a base station communication device includes a carrier wave-based transmitter and an ultrawideband receiver. A mobile communication device includes a carrier wave-based receiver and an ultrawideband transmitter. Carrier wave communications are carried out in a forward channel from the base station communication device to the mobile communication device, and ultrawideband communications are carried out in a reverse channel from the mobile communication device to the base station communication device. As a result, the power requirements of the mobile communication device are significantly reduced.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: John C. Wynbeek
  • Patent number: 6854070
    Abstract: A method of adding memory capacity to a computer system. The computer system comprises a redundant memory system including a plurality of memory cartridges. By powering-down a memory cartridge, adding an additional memory module to the memory cartridge, and powering-up the memory cartridge for each memory cartridge in the system, the system can transition from a redundant mode of operation to a non-redundant mode of operation for each power-down, thus allowing the computer system to remain functional during the addition of the memory module. Alternatively, memory cartridges with higher memory capacity than those currently present in the computer system can be used to replace existing memory cartridges in the computer system, using the same techniques.
    Type: Grant
    Filed: January 25, 2001
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jerome J. Johnson, John M. MacLaren, Robert A. Lester, John E. Larson, Gary J. Piccirillo, Christian H. Post, Jeffery Galloway, Ho M. Lai, Anisha Anand, Eric Rose
  • Patent number: 6853468
    Abstract: A technique is described to greatly reduce or avoid the quantization errors that occur when mapping a relatively linear RGB color space into a greatly non-linear printer CMY color space of equal precision, avoiding the contouring or banding that occurs when printing color gradients in a non-linear printing system. The technique performs a dither-like process on the original RGB continuous tone data. The RGB values are dithered to create a range of values that, when mapped to the non-linear printer continuous tone CMY values, creates a range of CMY values that, on average, represent the correct average tone of the input RGB values. The generated CMY continuous tone values are then halftoned and printed.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Steven O. Miller, Jay S. Gondek, Thomas B. Pritchard
  • Patent number: 6853831
    Abstract: The present disclosure relates to a fusing system for fusing toner to a recording medium. The system includes a fuser roller, a pressure roller in contact with the fuser roller, and an external heating roller. In addition, the disclosure relates to a method for heating a fuser roller of a fusing system. The method includes the steps of providing an external heating roller, contacting an outer surface of the fuser roller with the external heating roller, heating the external heating roller, and rotating the external heating roller and the fuser roller such that heat is transferred from the external heating roller to the fuser roller.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: B. Mark Hirst, Kenneth E. Heath, Mark Wibbels
  • Patent number: 6854092
    Abstract: A method and apparatus of reducing variations in nanoscale circuit connections. One exemplary embodiment includes: placing a first connector between a first addressing wire and a first nanowire in a partial circuit; and applying bias to the partial circuit so that a second connector is placed between a second addressing wire and a second nanowire. This method of bias connections is repeated for each wire in the full circuit. Thus, bias is used to influence the positioning of connectors on additional wires (if any) in the full circuit.
    Type: Grant
    Filed: August 12, 2002
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Tad Hogg
  • Patent number: 6853730
    Abstract: There is provided a method of encoding a data word. The method includes (a) scrambling a data word to generate a scrambled data word, and (b) encoding the scrambled data word so that a first occurrence of the scrambled data word is encoded to produce a first code word, and a subsequent occurrence of the scrambled data word is encoded to produce a second code word. The second code word is different from the first code word.
    Type: Grant
    Filed: January 23, 2004
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Alistair Neil Coles, Eric Henri Ulysse Deliot
  • Patent number: 6851672
    Abstract: A sheet transport system (20) comprising at least one sheet transporter (30,36) that receives and hands off a sheet being transported by the system so as to transport the sheet from a first position to a second position, wherein the at least one transporter (30,36) comprises at least one orifice (44) through which air is aspirated to create a vacuum that grips a sheet when it is received by the transporter (30,36); a vacuum system coupled to the at least one orifice (44) controllable to aspirate air through the at least one orifice (44) to grip the sheet; at least one vacuum sensor (60) that generates signals responsive to magnitude of vacuum of the at least one orifice (44); and a controller (49) that receives the signals generated by the at least one vacuum sensor (60) and provides a signal indicative of a location of the sheet in the transport system (20) from the signals.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Aron Shmaiser, Yaron Zarfaty
  • Patent number: 6853398
    Abstract: A method for real-time video communication. Specifically, one embodiment of the present invention discloses a method of video conferencing that captures a plurality of real-time video streams of a local participant from a plurality of sample viewpoints. From the plurality of video streams, a new view synthesis technique can be applied to generate a video image stream in real-time of the local participant rendered from a second location of a second participant with respect to a first location of the local participant in a coordinate space of a virtual environment. A change in either of the locations leads to the modifying of the video image stream, thereby enabling real-time video communication from the local participant to the second participant.
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Thomas Malzbender, W. Bruce Culbertson, H. Harlyn Baker, Michael E. Goss, Daniel G. Gelb, Irwin Sobel, Donald O. Tanguay
  • Patent number: 6853554
    Abstract: A modular semiconductor chip cooling system having a readily openable enclosure defining a chamber configured to hold a printed circuit board carrying components to be cooled. The enclosure can include a reservoir, a condenser and a pump. Sprayers within the chamber are adjustably mounted on one or more brackets to allow each sprayer to be set for the individual height of its respective component. The enclosure can be readily removed from a computer system through a quick release connection. The computer system can include a condenser and pump to operate all its modular cooling systems, removing the condensing function from the individual modules.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Cullen E. Bash, Chandrakant D. Patel, Glenn C. Simon
  • Patent number: 6852153
    Abstract: A puddling additive comprising a nonionic, polar group and a C6-C30 hydrocarbon tail for use in reducing puddling in an inkjet ink. The inkjet ink also comprises a dye and an ink vehicle. A method of reducing puddling in an inkjet ink is also disclosed. The method comprises adding a puddling additive to the inkjet ink, wherein the puddling additive comprises a nonionic, polar group and a C6-C30 hydrocarbon tail.
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Linda C. Uhlir-Tsang, John R Moffatt
  • Patent number: 6853380
    Abstract: A graphical display system utilizes a plurality of graphics pipelines, a compositor, and application interface logic. The plurality of graphics pipelines are configured to render graphical data in parallel. The compositor is configured to define a composite data signal that is based on the graphical data rendered by each of the pipelines. The application interface logic is configured to retrieve configuration data indicative of a configuration of the compositor. The application interface logic is further configured to provide the configuration data to a graphics application, wherein the graphics application is configured to provide graphical data to the plurality of pipelines based on the configuration data.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Byron A. Alcorn
  • Patent number: 6853486
    Abstract: A projection screen is provided that includes a display surface having a plurality of elements. Each element has an optical property that is responsive to an appropriate applied voltage. The display surface may be configured so that the optical properties of each element may be coordinated with the projected image.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Antonio S. Cruz-Uribe, William J. Allen, John Christopher Rudin, Andrew Arthur Hunter, Andrew L. Van Brocklin
  • Patent number: 6851789
    Abstract: A hardcopy device having a scanning head arranged to reciprocate across a scan axis, and first and second codestrips arranged substantially parallel to the scan axis, the first and second codestrips being offset from one another in the scan axis, such that the device may determine the position of the head along the scan axis relative to the first and second codestrips in a first set of positions but relative to only one of the first and second codestrips in a second set of positions.
    Type: Grant
    Filed: April 29, 2003
    Date of Patent: February 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Emilio Cano, Juan Perez, Jose Miguel Toran
  • Publication number: 20050026630
    Abstract: A guide apparatus 50 according to the present invention is provided with a service information DB 30d storing service information containing a service providing place and attribute information of a target user; a recognizing device 30b for acquiring an ID from image data transmitted from a cell phone 14; a retrieving device 30c for retrieving service information from the service information DB 30d on the basis of the acquired ID and for retrieving such service information that attribute information of the user of cell phone 14 coincides with attribute information of a target user, out of service information provided at service providing places near the service providing place; and a route retrieving device 20c for retrieving a route between the information about the service providing place retrieved and the cell phone 14; and transmits the route information and service information as guide information to the cell phone 14.
    Type: Application
    Filed: July 15, 2004
    Publication date: February 3, 2005
    Applicants: NTT DoCoMo, Inc., HEWLETT-PACKARD COMPANY
    Inventors: Toshiki Iso, Kiyotaka Otsuji, Hiroki Suzuki, Shoji Kurakake, Toshiaki Sugimura, Hidenori Shimizu, Taro Sugahara, Fumitoshi Ukai, Hironori Bouno, Marc McEachern, Shinya Nakagawa
  • Publication number: 20050028072
    Abstract: A system and related method for calculating parity information for disk array drive failure recovery. More specifically, using eight bit coefficients and calculating parity information using valid eight bit encryption keys to produce finite field encrypted resultant multiplication. Further disclosed is a method of determining whether a potential encryption key of a particular number of bits produces valid results for all possible multiplications in determining parity values.
    Type: Application
    Filed: August 26, 2004
    Publication date: February 3, 2005
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventor: Purna Murthy
  • Patent number: 6848841
    Abstract: A system and method for interconnecting electronic components for facilitating shared communication. The system comprises a translucent optical layer, a plurality of access slots in the translucent optical layer providing access thereto, and at least one electronic component having an optical communicator, and an optical interface connector. The optical interface connector is complementarily matched to at least one of the plurality of access slots. The optical communicator accesses the translucent optical layer when the at least one electronic component is inserted into at least one of the plurality of access slots.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: February 1, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Robert A. Cochran, David A. Robinson
  • Patent number: 6850230
    Abstract: An electronic writing instrument for rewritable electronic writing surfaces. A self-powered, untethered, pencil-like instrument uses a fringe field for changing the orientation of pixels composed of molecular colorant elements. An appendix hereto describes the molecular colorant.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: February 1, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Kent D. Vincent, R. Stanley Williams, Xiao-An Zhang
  • Patent number: 6848762
    Abstract: Ink reservoirs containing binary elements facilitate discrete sensing of ink level within the reservoir. The binary elements are adapted to provide an electrical path in response to an applied electrical signal if the element is immersed in the ink. The binary elements are further adapted to present an open circuit in response to the same applied electrical signal if the element is above a level of the ink. The binary elements may be single-use or multi-use elements, i.e., their state change may be irreversible or reversible, respectively. Based on the presence or absence of an electrical path, the ink level can be deemed to be at or above a level of the binary element, or below the level of the binary element, respectively.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: February 1, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: William F. King, Angel L. Enriquez
  • Patent number: 6850339
    Abstract: When black regions are adjacent to color regions, the adjacent black regions are encoded (rendered) at the resolution of the color regions (e.g., 300 dpi) even though the printer has the capability of printing black at a higher resolution (e.g., 600 dpi). To make full use of the 600 dpi resolution of the printer, the black pixels are separated from the color pixels. The 300 dpi resolution black pixel field is converted to a 600 dpi black image field. A window surrounding a selected group of (600 dpi) black/white target pixels is chosen. The pixels in the window are applied to a logic circuit having a plurality of logical conditions. As a result of the logic processing, values of each of the target pixels can be changed to a different pixel value to avoid jagged edges in the printed images, thereby providing a pseudo-600 dpi resolution for the target pixels. The logical operations are performed until all of the pixels have values determined by the logic circuit.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: February 1, 2005
    Assignee: Hewlett Packard Development Company
    Inventor: Mark D. Lund
  • Patent number: 6850430
    Abstract: The invention includes an apparatus and method for regulating a magnetic memory cell write current. The method includes modifying a magnetic memory cell write current by summing a write current offset to the magnetic memory cell write current, and determining whether writing to a magnetic memory cell with the modified magnetic memory cell write current results in a write error condition. If a write error condition exists, then the method includes incrementing the magnetic memory cell write current, or decrementing the magnetic memory cell write current, until the write error condition is eliminated.
    Type: Grant
    Filed: December 2, 2003
    Date of Patent: February 1, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Frederick A. Perner
  • Patent number: D501503
    Type: Grant
    Filed: June 11, 2003
    Date of Patent: February 1, 2005
    Assignee: Hewlett Packard Development Company LP
    Inventors: David W. Leong, David Bradley Short