Patents by Inventor David Nguyen
David Nguyen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9442540Abstract: A multi-node computer system, comprising: a plurality of nodes, a system control unit and a carrier board. Each node of the plurality of nodes comprises a processor and a memory. The system control unit is responsible for: power management, cooling, workload provisioning, native storage servicing, and I/O. The carrier board comprises a system fabric and a plurality of electrical connections. The electrical connections provide the plurality of nodes with power, management controls, system connectivity between the system control unit and the plurality of nodes, and an external network connection to a user infrastructure. The system control unit and the carrier board provide integrated, shared resources for the plurality of nodes. The multi-node computer system is provided in a single enclosure.Type: GrantFiled: December 9, 2009Date of Patent: September 13, 2016Assignee: Advanced Green Computing Machines-IP, LimitedInventors: Tung M. Nguyen, Richard Au, David Nguyen, Tipatat Chennavasin, Najaf Rizvi, David Bradley, Matthew Humphreys
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Publication number: 20160246848Abstract: A method, apparatus and computer program product are provided to facilitate the identification of one or more media files stored on respective ones of a plurality of user devices. In the context of a method, a current context is determined. The method also automatically identifies one or more media files stored on respective ones of a plurality of user devices based upon a relationship between a context associated with the respective media file and the current context. The method also causes the one or more media files to be transferred to an output device for presentation. A corresponding apparatus and computer program product are also provided.Type: ApplicationFiled: October 14, 2013Publication date: August 25, 2016Inventors: David Nguyen, Praveen Krishnan, Vijo Cherian, Tsaifa Yao
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Publication number: 20160243542Abstract: An apparatus for processing a sample, circuit board suited to use in such an apparatus and a method of processing in which the apparatus has alignment features to assist in aligning the circuit board and a sample cartridge in the correct position relative to one another. In this way, the plurality of sections for processing a sample in the cartridge are positioned against a plurality of elements, such as a heater for heating the sample cartridge or an electrical contact (EP1-EP4) for powering features on the sample cartridge, correctly and can operate independently of one another.Type: ApplicationFiled: September 18, 2015Publication date: August 25, 2016Inventors: Stan SMITH, Brett DUANE, Cedric HURTH, David NGUYEN, Amol SURVE, Ralf LENIGK, Frederic ZENHAUSERN
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Publication number: 20160217554Abstract: A method comprising determining a first display angle of a display comprised by an apparatus with respect to gravity, determining a first contiguous subset of a sequential arrangement of information based, at least in part, on the first display angle, performing a first operation based, at least in part, on the first contiguous subset, determining a second display angle of the display with respect to gravity, the second display angle being different from the first display angle, determining a second contiguous subset of the sequential arrangement based, at least in part, on the second display angle, and performing a second operation based, at least in part, on the second contiguous subset is disclosed.Type: ApplicationFiled: September 16, 2014Publication date: July 28, 2016Inventors: David NGUYEN, Shigeyuki SEKO, Kenton LYONS, Seung Wook KIM, Audrey DESJARDINS
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Publication number: 20160217769Abstract: A method comprising entering a passive viewing state of an apparatus, determining occurrence of a software event, generating a visual event notification that is indicative of the software event based, at least in part, on the passive viewing state, causing display, on a display, of the visual event notification in conformance with an impaired-viewing display mode based, at least in part, on passive viewing state, receiving environmental sensor information, determining that the environmental sensor information indicates that the apparatus is actively viewed by a user, entering an active viewing state of the apparatus based, at least in part, on the determination that the environmental sensor information indicates that the apparatus is actively viewed by the user, and causing display, on the display, of different visual information in conformance with an unimpaired-viewing display mode based, at least in part, on the active viewing state is disclosed.Type: ApplicationFiled: September 16, 2014Publication date: July 28, 2016Inventors: David NGUYEN, Audrey DESJARDINS
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Publication number: 20160195925Abstract: A method comprising entering a passive viewing state of an apparatus, receiving information indicative of a first input, determining a first operation based, at least in part, on a passive viewing state and the first input, performing the first operation, receiving environmental sensor information, determining that the environmental sensor information indicates that the apparatus is actively viewed by a user, entering of an active viewing state of the apparatus based, at least in part, on the determination that the environmental sensor information indicates that the apparatus is actively viewed by the user, receiving information indicative of a second input, the second input being substantially the same as the first input, determining a second operation based, at least in part, on the active viewing state and the second input, the second operation being different from the first operation, and performing the second operation is disclosed.Type: ApplicationFiled: September 16, 2014Publication date: July 7, 2016Applicant: Nokia Technologies OyInventors: David NGUYEN, Audrey DESJARDINS
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Patent number: 9176094Abstract: An apparatus (11) for processing a sample, circuit board (8008) suited to use in such an apparatus and a method of processing are provided in which the apparatus (11) is provided with alignment features to assist in provided the circuit board and a sample cartridge (9) in the correct position relative to one another. In this way, the plurality of sections for processing a sample in the cartridge (9) are positioned against a plurality of elements, such as a heater (4) for heating the sample cartridge (9) or an electrical contact (EP1-EP4) for powering features on the sample cartridge (9), correctly and can operate independently of one another.Type: GrantFiled: August 25, 2011Date of Patent: November 3, 2015Assignees: WHITESPACE ENTERPRISE CORPORATION, THE ARIZONA BOARD OF REGENTSInventors: Stan Smith, Brett Duane, Cedric Hurth, David Nguyen, Amol Surve, Ralf Lenigk, Frederic Zenhausern
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Patent number: 9112498Abstract: The embodiments herein describe a dynamic metal-oxide-semiconductor field-effect transistor (MOSFET) gate driver system architecture and control scheme. The MOSFET gate driver system dynamically adjusts both the gate driver turn-on-resistance and the gate driver turn-off resistance within a single (i.e., one) switching cycle to reduce electromagnetic interference (EMI) in the system and to minimize the conduction loss of a power MOSFET during operation.Type: GrantFiled: August 7, 2012Date of Patent: August 18, 2015Assignee: Dialog Semiconductor Inc.Inventors: Yong Li, Fuqiang Shi, Andrew Kwok-Cheung Lee, David Nguyen, Jiang Chen
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Publication number: 20150160270Abstract: A method for estimating an output voltage of a power converter comprises sensing a voltage waveform representative of the output voltage; and detecting a first gap and a second gap. The first gap is between a time when the sensed voltage waveform crosses a first voltage reference and a time when the sensed voltage waveform crosses a second voltage reference at a voltage offset below the first voltage reference. The second gap is between a time when the sensed voltage waveform crosses a third voltage reference and a time when the sensed voltage waveform crosses the second voltage reference, the third voltage referenced at a predetermined voltage above the second voltage reference. Responsive to the first gap exceeding a threshold, a tracking error is computed based on the first gap; and responsive to the first gap not exceeding the threshold, the tracking error is computed based on the second gap.Type: ApplicationFiled: December 8, 2014Publication date: June 11, 2015Inventors: Fuqiang Shi, Pengju Kong, Hien Huu Bui, Judy Sha, David Nguyen, Duc Doan
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Patent number: 8982584Abstract: A controller of a switching power converter employs a dynamically adaptive power supply regulation approach that improves low-load and no-load regulation to achieve ultra-low standby power in a switching power converter. Under ultra-low load conditions when a deep-deep pulse width modulation (DDPWM) is applied, the controller decreases the actual on-time of the power switch of the switching power converter by decreasing the “on” duration of the control signal used to turn on or off the power switch, until the “on” duration of the control signal reaches a minimum value. To further reduce the on-time of the power switch, the controller reduces the power applied to the power switch to turn on the switch more slowly, while maintaining the “on” duration of the control signal at a minimum value. The minimum value of the “on” duration of the control signal and the minimum power applied to the switch are dynamically controlled.Type: GrantFiled: October 25, 2012Date of Patent: March 17, 2015Assignee: Dialog Semiconductor Inc.Inventors: Fuqiang Shi, Yong Li, John William Kesterson, David Nguyen
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Patent number: 8964422Abstract: A controller of a switching power converter sets an actual turn-on time of a switch in the switching power converter in each switching cycle by selecting one of a plurality of valley points of the output voltage of the switching power converter occurring subsequent to the desired turn-on time of the switch. The desired turn-on time of the switch may be calculated according to the regulation scheme employed by the switching power converter. The controller selects one of the plurality of valley points randomly from switching cycle to switching cycle. The controller generates a control signal to turn on the switching power converter at the selected one of the plurality of valley points of the output voltage occurring subsequent to the desired turn-on time.Type: GrantFiled: October 22, 2012Date of Patent: February 24, 2015Assignee: Dialog Semiconductor Inc.Inventors: Fuqiang Shi, Yong Li, John William Kesterson, David Nguyen, Junjie Zheng
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Publication number: 20140376280Abstract: A switching power converter provides regulated output power to a load. The switching power converter comprises a transformer including a primary winding coupled to an input voltage, a secondary winding coupled to an output of the switching power converter, an auxiliary winding on a primary side of the transformer, and a switch coupled to the primary winding of the transformer. Output voltage across the secondary winding is reflected as a feedback voltage across the auxiliary winding. The switching power converter detects output current based on a reset time of the transformer. Based on the detected output power, the switching power converter controls switching of the switch to provide regulated output power.Type: ApplicationFiled: June 17, 2014Publication date: December 25, 2014Inventors: Fuqiang Shi, David Nguyen, Hien Huu Bui, Yong Li, Jianming Yao
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Patent number: 8874656Abstract: A finds comparison tool is provided that includes a presentation tier providing a plurality of interfaces for interacting with a plurality of client applications. The presentation tier allows the client applications to send requests for a plurality of analytics to be performed regarding comparing the performance of one or more funds or portfolios as well allowing mobile-based client applications and web-based client applications to communicate with the funds comparison tool. An application tier processes the requests sent by the client applications by providing the data used by the client applications, storing and retrieving of session data, and an interface for the analytics information captured during sessions so as to allow a visualization of the analytics used in the comparison of the one or more funds or portfolios.Type: GrantFiled: November 30, 2011Date of Patent: October 28, 2014Assignee: Putnam Investments, LLCInventors: Paul O'Connell, David Nguyen, George White, Matt Crist, Michael Tuccinard, Matthew Stuehler, Michael Novak
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Patent number: 8854075Abstract: The asynchronous circuit includes a fork having at least two branches, each branch being connected to a logic gate so that the logic gate receives as input a branch-ending signal. It further includes a circuit for branching the branch-ending signal at the level of each logic gate to form a branched signal, and a blocking circuit comprising a Muller gate and receiving as input at least one branched signal, the blocking circuit being configured to prevent the propagation of an output signal when the branch-ending signals are in different logic states.Type: GrantFiled: March 5, 2013Date of Patent: October 7, 2014Assignee: TiempoInventors: Marc Renaudin, David Nguyen Van Mau
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Publication number: 20140085941Abstract: A power converter includes a transformer with a primary and a secondary winding and a switch. A controller of the power converter at the primary winding side of the transformer generates a control signal to turn on or turn off the switch, the switch being turned on responsive to the control signal being in a first state and the switch being turned off responsive to the control signal being in a second state. The controller determines current through the primary winding generated while the switch is turned on and indirectly detects an input voltage to the power converter based on the current through the primary winding generated while the switch is turned on. The controller in turn may detect conditions such as a loss of power or brown out at the input of the power converter based on the indirectly detected input voltage.Type: ApplicationFiled: September 23, 2013Publication date: March 27, 2014Applicant: iWatt Inc.Inventors: Yong Li, Hien Huu Bui, David Nguyen, Fuqiang Shi
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Publication number: 20130341191Abstract: An apparatus (11) for processing a sample, circuit board (8008) suited to use in such an apparatus and a method of processing are provided in which the apparatus (11) is provided with alignment features to assist in provided the circuit board and a sample cartridge (9) in the correct position relative to one another. In this way, the plurality of sections for processing a sample in the cartridge (9) are positioned against a plurality of elements, such as a heater (4) for heating the sample cartridge (9) or an electrical contact (EP1-EP4) for powering features on the sample cartridge (9), correctly and can operate independently of one another.Type: ApplicationFiled: August 25, 2011Publication date: December 26, 2013Applicant: FORENSIC SCIENCE SERVICE LIMITEDInventors: Stan Smith, Brett Duane, Cedric Hurth, David Nguyen, Amol Surve, Ralf Lenigk, Frederic Zenhausen
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Patent number: 8560797Abstract: An apparatus for controlling a dynamic random access memory (DRAM), the apparatus comprising an interface to transmit, over a first plurality of wires, to the DRAM a first code to indicate that first data is to be written to the DRAM and a column address to indicate a column location of a memory core in the DRAM where the first data is to be written. The interface is further to transmit a second code to indicate whether mask information for the first data will be sent to the DRAM. If the second code indicates that mask information will be sent, a portion of the column address and a portion of the mask information are sent after the second code is sent. The interface is further to transmit to the DRAM, over a second plurality of wires separate from the first plurality of wires, the first data.Type: GrantFiled: March 15, 2012Date of Patent: October 15, 2013Assignee: Rambus Inc.Inventors: Richard M. Barth, Frederick A. Ware, Donald C. Stark, Craig E. Hampel, Paul G. Davis, Abhijit M. Abhyankar, James A. Gasborro, David Nguyen
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Publication number: 20130234758Abstract: The asynchronous circuit includes a fork having at least two branches, each branch being connected to a logic gate so that the logic gate receives as input a branch-ending signal. It further includes a circuit for branching the branch-ending signal at the level of each logic gate to form a branched signal, and a blocking circuit comprising a Muller gate and receiving as input at least one branched signal, the blocking circuit being configured to prevent the propagation of an output signal when the branch-ending signals are in different logic states.Type: ApplicationFiled: March 5, 2013Publication date: September 12, 2013Applicant: TIEMPOInventors: Marc RENAUDIN, David NGUYEN VAN MAU
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Publication number: 20130138721Abstract: A finds comparison tool is provided that includes a presentation tier providing a plurality of interfaces for interacting with a plurality of client applications. The presentation tier allows the client applications to send requests for a plurality of analytics to be performed regarding comparing the performance of one or more funds or portfolios as well allowing mobile-based client applications and web-based client applications to communicate with the funds comparison tool. An application tier processes the requests sent by the client applications by providing the data used by the client applications, storing and retrieving of session data, and an interface for the analytics information captured during sessions so as to allow a visualization of the analytics used in the comparison of the one or more funds or portfolios.Type: ApplicationFiled: November 30, 2011Publication date: May 30, 2013Inventors: Paul O'Connell, David Nguyen, George White, Matt Crist, Michael Tuccinard, Matthew Stuehler, Michael Novak
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Patent number: 8444423Abstract: A USB plug receptacle includes a connector substrate having a tongue portion having a first set of electrical contact pins disposed on a top surface of the tongue portion, a second set of a plurality of electrical pins disposed on a bottom surface of the tongue portion, a third set of electrical contact pins disposed on an opposite end of the tongue portion. The USB plug receptacle further includes a metal case made of a sheet of electrically conductive metal plate by blanking the sheet into a generally tubular shape to receive and enclose the connector substrate. When the connector substrate is inserted into the metal case, the third set of electrical contact pins are exposed outside of the metal case and the third set of electrical contact pins can be mounted on first and second sets of electrical contact pads of a printed circuit board assembly.Type: GrantFiled: August 14, 2012Date of Patent: May 21, 2013Assignee: Super Talent Electronics, Inc.Inventors: David Nguyen, Nan Nan, Jim Chin-Nan Ni, Frank I-Kang Yu, Abraham C. Ma, Ming-Shiang Shen