Patents by Inventor Leon Wu

Leon Wu 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).

  • Patent number: 8942384
    Abstract: A headset comprises a body, an audio transducer, an arm, a detector and processor. The detector can indicate whether the arm is in a first or second position. The headset operates in a headset mode or speakerphone mode responsive to the arm's position.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: January 27, 2015
    Assignee: Plantronics, Inc.
    Inventors: Wilmer Lau, Leon Wu
  • Patent number: 8725665
    Abstract: Techniques for evaluating the accuracy of a predicted effectiveness of an improvement to an infrastructure include collecting data, representative of at least one pre-defined metric, from the infrastructure during first and second time periods corresponding to before and after a change has been implemented, respectively. A machine learning system can receive compiled data representative of the first time period and generate corresponding machine learning data. A machine learning results evaluator can empirically analyze the generated machine learning data. An implementer can implement the change to the infrastructure based at least in part on the data from a machine learning data outputer. A system performance improvement evaluator can compare the compiled data representative of the first time period to that of the second time period to determine a difference, if any, and compare the difference, if any, to a prediction based on the generated machine learning data.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: May 13, 2014
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Roger N. Anderson, Albert Boulanger, Leon Wu, Serena Lee
  • Patent number: 8715009
    Abstract: An edge connector for transmitting signals at a high frequency, for example in a system environment with a frequency higher than 2.0 GHz or 3.0 GHz, is provided. The connector includes a housing and at least a first and a second conductors disposed in the housing. Each conductor has a contact portion and a terminal portion, and each contact portion form a contact surface. The at least first and second conductors are disposed in the housing in such a manner that, both the contact surfaces face a first direction, the terminal portion of the first conductor is offset from the contact portion of the first conductor along the first direction, and the terminal portion of the second conductor is offset from the contact portion of the second conductor along a second direction which is opposite to the first direction.
    Type: Grant
    Filed: July 10, 2007
    Date of Patent: May 6, 2014
    Assignee: FCI
    Inventors: Leon Wu, Richard Chiu
  • Patent number: 8586873
    Abstract: A circuit board includes a pair of differential signal lines and a pair of test point pads, one test point pad coupled to one of the signal lines and another of the test point pads coupled to another of the signal lines. The two test point pads are staggered relative to each other and the two signal lines. The circuit board includes a plurality of conductive layers and a plurality of insulating layers. The conductive layers can be etched into conductive patterns, or traces, for connecting the electronic components, which are soldered to the circuit board. The conductive layers may be selectively connected together by vias. One or more of the conductive layers may be a metal plane for providing a ground plane and/or a power plane. To minimize or eliminate the capacitance generated between the test point pad and an underlying ground plane and/or power plane, portions of the ground plane and/or the portion of the power plane directly aligned with each test point pad are removed.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: November 19, 2013
    Assignee: Flextronics AP, LLC
    Inventor: Leon Wu
  • Publication number: 20120244801
    Abstract: A headset comprises a body, an audio transducer, an arm, a detector and processor. The detector can indicate whether the arm is in a first or second position. The headset operates in a headset mode or speakerphone mode responsive to the arm's position.
    Type: Application
    Filed: March 23, 2011
    Publication date: September 27, 2012
    Applicant: PLANTRONICS, INC.
    Inventors: Wilmer Lau, Leon Wu
  • Publication number: 20120204421
    Abstract: A test point design comprising: a circuit board comprising a plurality of layers including a power plane and a ground plane, the circuit board further comprises a differential pair of signal lines including a first signal line and a second signal line; and a pair of test point pads including a first test point pad connected to the first signal line and a second test point pad connected to the second signal line, wherein a first portion of the power plane and a first portion of the ground plane below the first test point pad are removed and a second portion of the power plane and a second portion of the ground plane below the second test point pad are removed.
    Type: Application
    Filed: January 12, 2012
    Publication date: August 16, 2012
    Applicant: FLEXTRONICS AP, LLC
    Inventor: Leon Wu
  • Publication number: 20110203840
    Abstract: A circuit board includes a pair of differential signal lines and a pair of test point pads, one test point pad coupled to one of the signal lines and another of the test point pads coupled to another of the signal lines. The two test point pads are staggered relative to each other and the two signal lines. The circuit board includes a plurality of conductive layers and a plurality of insulating layers. The conductive layers can be etched into conductive patterns, or traces, for connecting the electronic components, which are soldered to the circuit board. The conductive layers may be selectively connected together by vias. One or more of the conductive layers may be a metal plane for providing a ground plane and/or a power plane. To minimize or eliminate the capacitance generated between the test point pad and an underlying ground plane and/or power plane, portions of the ground plane and/or the portion of the power plane directly aligned with each test point pad are removed.
    Type: Application
    Filed: February 23, 2010
    Publication date: August 25, 2011
    Applicant: FLEXTRONICS AP, LLC
    Inventor: Leon Wu
  • Publication number: 20100062649
    Abstract: An edge connector for transmitting signals at a high frequency, for example in a system environment with a frequency higher than 2.0 GHz or 3.0 GHz, is provided. The connector includes a housing and at least a first and a second conductors disposed in the housing. Each conductor has a contact portion and a terminal portion, and each contact portion form a contact surface. The at least first and second conductors are disposed in the housing in such a manner that, both the contact surfaces face a first direction, the terminal portion of the first conductor is offset from the contact portion of the first conductor along the first direction, and the terminal portion of the second conductor is offset from the contact portion of the second conductor along a second direction which is opposite to the first direction.
    Type: Application
    Filed: July 10, 2007
    Publication date: March 11, 2010
    Inventors: Leon Wu, Richard Chiu
  • Patent number: 7106094
    Abstract: Aspects for improving signal quality on high speed, multi-drop busses are described. The aspects include coupling a source device directly to multiple load devices, wherein there are no resistance components coupled in series between the source device and the multiple load devices. The aspects further include providing a spacing arrangement for the multiple load devices, wherein negative reflections are delayed to minimize deleterious efforts from the negative reflections. Through the present invention, the modified version of a commonly used bus topology achieves extended voltage timing margins in a high speed, multi-drop bus in a straightforward and efficient manner.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: September 12, 2006
    Assignee: International Business Machines Corporation
    Inventors: Edmund S. Gamble, Terence Rodrigues, Leon Wu
  • Publication number: 20050253621
    Abstract: Aspects for improving signal quality on high speed, multi-drop busses are described. The aspects include coupling a source device directly to multiple load devices, wherein there are no resistance components coupled in series between the source device and the multiple load devices. The aspects further include providing a spacing arrangement for the multiple load devices, wherein negative reflections are delayed to minimize deleterious efforts from the negative reflections. Through the present invention, the modified version of a commonly used bus topology achieves extended voltage timing margins in a high speed, multi-drop bus in a straightforward and efficient manner.
    Type: Application
    Filed: May 14, 2004
    Publication date: November 17, 2005
    Applicant: International Business Machines Corporation
    Inventors: Edmund Gamble, Terence Rodrigues, Leon Wu
  • Patent number: 6900664
    Abstract: A preferred embodiment includes a distributed network of a plurality of dynamically configurable bi-directional input/output (I/O) cells, each including a forward datapath having a first receiver, for receiving a first input signal from downstream driver on a first port of a signal line, coupled to a first driver for sending a first output signal to a first upstream receiver on a second port of the signal line; and a reverse datapath having a second receiver, for receiving a second input signal from a second downstream driver on the second port of the signal line, coupled to a second driver for sending a second output signal to a second upstream receiver on the first port of the signal line; wherein the first input signal and the second output signal are transmitted concurrently on the first port of the signal line.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: May 31, 2005
    Assignee: International Business Machines Corporation
    Inventor: Leon Wu
  • Publication number: 20050114724
    Abstract: A data processing system includes first, second, and third agents connected to a shared bus. The third agent is able to receive information via the shared bus from the first agent or from the second agent. The third agent includes a skew compensation circuit to determine signal skew in signal received via the shared bus and to compensate for the skew by adding delay into selected signals of the bus. The skew compensation circuit determines whether the first agent or the second agent is the sender of information received by the third agent via the shared bus. The skew compensation circuit alters the skew compensation based on the identity of the sender such that the delay into the bus signals is specific to the corresponding sender.
    Type: Application
    Filed: November 24, 2003
    Publication date: May 26, 2005
    Inventor: Leon Wu
  • Publication number: 20050106435
    Abstract: A twin-wire arc deposition method for depositing a nano-structured catalyst coating onto a solid electrolyte membrane or an electrode substrate from a precursor catalyst material selected from the group consisting of a metal, metal alloy, metal compound, and ceramic material.
    Type: Application
    Filed: November 13, 2003
    Publication date: May 19, 2005
    Inventors: Bor Jang, Wen Huang, Leon Wu
  • Patent number: 6864018
    Abstract: An electrochemical cell including a cathode, an electrolyte in ionic contact with the cathode, and an anode in physical contact with the electrolyte, wherein the anode contains a controlled release anode composition that includes at least a first anode active material and at least a first controlled release agent in physical contact thereto for tentatively isolating the first anode active material from the electrolyte in the beginning of a cell operation for a delayed reaction of the first anode active material. Preferably, the anode further contains an initial-stage anode active material in direct contact with the electrolyte. Such a controlled release anode can be used in a variety of electrochemical cells including metal-air batteries, such as a zinc-air battery, for an extended period of operating time.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: March 8, 2005
    Assignee: Nanotek Instruments, Inc
    Inventors: John Huang, Jean Liu, Leon Wu
  • Publication number: 20040114412
    Abstract: A system and method are disclosed for improving I/O data efficiency as compared to the distributed network scheme of the prior art is disclosed. A preferred embodiment includes a distributed network of a plurality of dynamically configurable bidirectional input/output (I/O) cells, each cell including a forward datapath having a first receiver, for receiving a first input signal from a first downstream driver on a first port of a signal line, coupled to a first driver for sending a first output signal to a first upstream receiver on a second port of the signal line; and a reverse datapath having a second receiver, for receiving a second input signal from a second downstream driver on the second port of the signal line, coupled to a second driver for sending a second output signal to a second upstream receiver on the first port of the signal line; wherein the first input signal and the second output signal are transmitted concurrently on the first port of the signal line.
    Type: Application
    Filed: December 12, 2002
    Publication date: June 17, 2004
    Applicant: International Business Machines Corporation
    Inventor: Leon Wu
  • Publication number: 20030162095
    Abstract: An electrochemical cell including a cathode, an electrolyte in ionic contact with the cathode, and an anode in physical contact with the electrolyte, wherein the anode contains a controlled release anode composition that includes at least a first anode active material and at least a first controlled release agent in physical contact thereto for tentatively isolating the first anode active material from the electrolyte in the beginning of a cell operation for a delayed reaction of the first anode active material. Preferably, the anode further contains an initial-stage anode active material in direct contact with the electrolyte. Such a controlled release anode can be used in a variety of electrochemical cells including metal-air batteries, such as a zinc-air battery, for an extended period of operating time.
    Type: Application
    Filed: February 22, 2002
    Publication date: August 28, 2003
    Inventors: John Huang, Jean Liu, Leon Wu