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- Hewlett Packard Patents Granted: Hewlett Packard patents that have been granted by the United States Patent and Trademark Office (USPTO).
- Hewlett Packard Patent Applications: Hewlett Packard patent applications that are pending before the United States Patent and Trademark Office (USPTO).
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Patent number: 6856423Abstract: 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: GrantFiled: August 24, 2001Date of Patent: February 15, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Bradley J. Anderson, William I. Herrmann
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Patent number: 6856778Abstract: 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: GrantFiled: August 15, 2002Date of Patent: February 15, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: David S. Vejtasa, Christopher A. Schantz
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Patent number: 6854287Abstract: 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: GrantFiled: October 31, 2003Date of Patent: February 15, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Chandrakant D. Patel, Cullen E. Bash
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Patent number: 6856994Abstract: 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: GrantFiled: May 30, 2002Date of Patent: February 15, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventor: Laura J. Dickey
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Patent number: 6857040Abstract: 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: GrantFiled: December 5, 2001Date of Patent: February 15, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Robert L. Noonan, Theodore F. Emerson
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Patent number: 6856860Abstract: 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: GrantFiled: July 2, 2003Date of Patent: February 15, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Gary Glen Stringham, Lawrence Bert Newell, Jr.
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Patent number: 6857086Abstract: 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: GrantFiled: April 21, 2003Date of Patent: February 15, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventor: Mark Shaw
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Patent number: 6851787Abstract: 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: GrantFiled: March 6, 2003Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventor: Bruce G. Johnson
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Patent number: 6853476Abstract: 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: GrantFiled: April 30, 2003Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Eric T. Martin, Adam L. Ghozeil, Arthur Piehl, James R. Przybyla
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Patent number: 6851785Abstract: 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: GrantFiled: September 10, 2002Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Yifeng Wu, Philip Cowan, Dongli Yang
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Patent number: 6851800Abstract: 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: GrantFiled: July 29, 2003Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventor: Preston Seu
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Patent number: 6853948Abstract: 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: GrantFiled: February 28, 2003Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventor: Robert W. Jewell
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Patent number: 6851786Abstract: 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: GrantFiled: December 10, 2002Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jeffrey S. Beck, Adam L. Ghozeil
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Patent number: 6851910Abstract: 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: GrantFiled: July 24, 2002Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventor: Robert Wesley Luffel
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Patent number: 6853478Abstract: 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: GrantFiled: June 13, 2002Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Kent D. Vincent, Xiao-An Zhang, R. Stanley Williams
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Patent number: 6853577Abstract: 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: GrantFiled: October 3, 2002Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Kent D. Vincent, Xiao-An Zhang, R. Stanley Williams
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Patent number: 6854075Abstract: 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: GrantFiled: April 19, 2001Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Shubhendu S. Mukherjee, Steven K. Reinhardt
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Patent number: 6851670Abstract: 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: GrantFiled: June 27, 2003Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventor: Douglas John Todd
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Patent number: 6851792Abstract: 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: GrantFiled: January 8, 2003Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Kurt Thiessen, Antoni Murcia
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Patent number: 6851668Abstract: 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: GrantFiled: January 21, 2003Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Paul K. Mui, Gustavo Guillemin, Roberto Obregon, Russell A. Mendenhall, David J. Arcaro
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Patent number: 6851878Abstract: 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: GrantFiled: April 22, 2003Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventor: Brian D. Hemmerlin
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Patent number: 6853805Abstract: 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: GrantFiled: May 22, 2003Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventor: Theodore B. Ziemkowski
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Patent number: 6852554Abstract: 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: GrantFiled: February 27, 2002Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Zhizhang John Chen, Sriram Ramamoorthi
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Patent number: 6853970Abstract: 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: GrantFiled: August 20, 1999Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Shail Aditya Gupta, B. Ramakrishna Rau
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Patent number: 6854065Abstract: 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: GrantFiled: July 30, 2001Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Robert B. Smith, Bradley D. Winick, Edward A Cross
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Patent number: 6854051Abstract: 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: GrantFiled: April 19, 2001Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventor: Shubhendu S. Mukherjee
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Patent number: 6851874Abstract: 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: GrantFiled: June 18, 2002Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jose M. Gonzalez, Enrique C. Abreu, Angel L. Enriquez, Jorge E. Badillo
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Patent number: 6851793Abstract: 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: GrantFiled: January 22, 2003Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventor: Sascha de Pe{overscore (n)}a
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Patent number: 6854043Abstract: 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: GrantFiled: July 5, 2002Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jeff G. Hargis, George Thomas Letey, Michael Kennard Tayler
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Patent number: 6853835Abstract: 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: GrantFiled: August 13, 2001Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventor: John C. Wynbeek
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Patent number: 6854070Abstract: 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: GrantFiled: January 25, 2001Date of Patent: February 8, 2005Assignee: 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
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Patent number: 6853468Abstract: 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: GrantFiled: July 8, 2003Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Steven O. Miller, Jay S. Gondek, Thomas B. Pritchard
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Patent number: 6853831Abstract: 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: GrantFiled: March 28, 2001Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: B. Mark Hirst, Kenneth E. Heath, Mark Wibbels
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Patent number: 6854092Abstract: 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: GrantFiled: August 12, 2002Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventor: Tad Hogg
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Patent number: 6853730Abstract: 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: GrantFiled: January 23, 2004Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Alistair Neil Coles, Eric Henri Ulysse Deliot
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Patent number: 6851672Abstract: 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: GrantFiled: April 18, 2000Date of Patent: February 8, 2005Assignee: Hewlett-Packard Indigo B.V.Inventors: Aron Shmaiser, Yaron Zarfaty
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Patent number: 6853398Abstract: 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: GrantFiled: June 21, 2002Date of Patent: February 8, 2005Assignee: 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
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Patent number: 6853554Abstract: 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: GrantFiled: December 14, 2001Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Cullen E. Bash, Chandrakant D. Patel, Glenn C. Simon
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Patent number: 6852153Abstract: 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: GrantFiled: September 24, 2002Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Linda C. Uhlir-Tsang, John R Moffatt
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Patent number: 6853380Abstract: 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: GrantFiled: March 4, 2002Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventor: Byron A. Alcorn
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Patent number: 6853486Abstract: 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: GrantFiled: March 10, 2003Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Antonio S. Cruz-Uribe, William J. Allen, John Christopher Rudin, Andrew Arthur Hunter, Andrew L. Van Brocklin
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Patent number: 6851789Abstract: 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: GrantFiled: April 29, 2003Date of Patent: February 8, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Emilio Cano, Juan Perez, Jose Miguel Toran
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Publication number: 20050026630Abstract: 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: ApplicationFiled: July 15, 2004Publication date: February 3, 2005Applicants: NTT DoCoMo, Inc., HEWLETT-PACKARD COMPANYInventors: Toshiki Iso, Kiyotaka Otsuji, Hiroki Suzuki, Shoji Kurakake, Toshiaki Sugimura, Hidenori Shimizu, Taro Sugahara, Fumitoshi Ukai, Hironori Bouno, Marc McEachern, Shinya Nakagawa
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Publication number: 20050028072Abstract: 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: ApplicationFiled: August 26, 2004Publication date: February 3, 2005Applicant: Hewlett-Packard Development Company, L.P.Inventor: Purna Murthy
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Patent number: 6848841Abstract: 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: GrantFiled: September 9, 2002Date of Patent: February 1, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Robert A. Cochran, David A. Robinson
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Patent number: 6850230Abstract: 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: GrantFiled: October 16, 2001Date of Patent: February 1, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Kent D. Vincent, R. Stanley Williams, Xiao-An Zhang
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Patent number: 6848762Abstract: 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: GrantFiled: April 25, 2003Date of Patent: February 1, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: William F. King, Angel L. Enriquez
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Patent number: 6850339Abstract: 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: GrantFiled: March 23, 2000Date of Patent: February 1, 2005Assignee: Hewlett Packard Development CompanyInventor: Mark D. Lund
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Patent number: 6850430Abstract: 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: GrantFiled: December 2, 2003Date of Patent: February 1, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventor: Frederick A. Perner
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Patent number: D501503Type: GrantFiled: June 11, 2003Date of Patent: February 1, 2005Assignee: Hewlett Packard Development Company LPInventors: David W. Leong, David Bradley Short