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).
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Patent number: 8942384Abstract: 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: GrantFiled: March 23, 2011Date of Patent: January 27, 2015Assignee: Plantronics, Inc.Inventors: Wilmer Lau, Leon Wu
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Patent number: 8725665Abstract: 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: GrantFiled: August 20, 2012Date of Patent: May 13, 2014Assignee: The Trustees of Columbia University in the City of New YorkInventors: Roger N. Anderson, Albert Boulanger, Leon Wu, Serena Lee
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Patent number: 8715009Abstract: 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: GrantFiled: July 10, 2007Date of Patent: May 6, 2014Assignee: FCIInventors: Leon Wu, Richard Chiu
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Patent number: 8586873Abstract: 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: GrantFiled: February 23, 2010Date of Patent: November 19, 2013Assignee: Flextronics AP, LLCInventor: Leon Wu
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Publication number: 20120244801Abstract: 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: ApplicationFiled: March 23, 2011Publication date: September 27, 2012Applicant: PLANTRONICS, INC.Inventors: Wilmer Lau, Leon Wu
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Publication number: 20120204421Abstract: 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: ApplicationFiled: January 12, 2012Publication date: August 16, 2012Applicant: FLEXTRONICS AP, LLCInventor: Leon Wu
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Publication number: 20110203840Abstract: 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: ApplicationFiled: February 23, 2010Publication date: August 25, 2011Applicant: FLEXTRONICS AP, LLCInventor: Leon Wu
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Publication number: 20100062649Abstract: 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: ApplicationFiled: July 10, 2007Publication date: March 11, 2010Inventors: Leon Wu, Richard Chiu
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Patent number: 7106094Abstract: 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: GrantFiled: May 14, 2004Date of Patent: September 12, 2006Assignee: International Business Machines CorporationInventors: Edmund S. Gamble, Terence Rodrigues, Leon Wu
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Publication number: 20050253621Abstract: 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: ApplicationFiled: May 14, 2004Publication date: November 17, 2005Applicant: International Business Machines CorporationInventors: Edmund Gamble, Terence Rodrigues, Leon Wu
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Patent number: 6900664Abstract: 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: GrantFiled: December 12, 2002Date of Patent: May 31, 2005Assignee: International Business Machines CorporationInventor: Leon Wu
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Publication number: 20050114724Abstract: 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: ApplicationFiled: November 24, 2003Publication date: May 26, 2005Inventor: Leon Wu
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Publication number: 20050106435Abstract: 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: ApplicationFiled: November 13, 2003Publication date: May 19, 2005Inventors: Bor Jang, Wen Huang, Leon Wu
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Patent number: 6864018Abstract: 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: GrantFiled: February 22, 2002Date of Patent: March 8, 2005Assignee: Nanotek Instruments, IncInventors: John Huang, Jean Liu, Leon Wu
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Publication number: 20040114412Abstract: 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: ApplicationFiled: December 12, 2002Publication date: June 17, 2004Applicant: International Business Machines CorporationInventor: Leon Wu
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Publication number: 20030162095Abstract: 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: ApplicationFiled: February 22, 2002Publication date: August 28, 2003Inventors: John Huang, Jean Liu, Leon Wu