Patents by Inventor C. Chu

C. Chu 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).

  • Publication number: 20080184468
    Abstract: An adaptable garment material and method of producing such a material. The material may have a substrate and a plurality of shape memory polymer elements integrated therewith, or may be a mat of interwoven shape memory polymer elements. The shape memory elements adapt in the presence of an actuation trigger and exhibit different properties upon actuation.
    Type: Application
    Filed: February 3, 2007
    Publication date: August 7, 2008
    Applicant: Raytheon Company
    Inventors: Thomas B. Stanford, Weldon S. Williamson, Elena Sherman, Andrew C. Chu
  • Patent number: 7408776
    Abstract: A conductive heat transport cooling system and method are provided for cooling primary and secondary heat generating components of an electronics system. The cooling system includes a liquid-based cooling subsystem including at least one liquid-cooled cold plate physically coupled to at least one primary heat generating component of the electronics system, and a thermally conductive coolant-carrying tube coupled to and in fluid communication with the at least one liquid-cooled cold plate. A thermally conductive auxiliary structure is coupled to the coolant-carrying tube and to at least one secondary heat generating component of the electronics system. When in use, the thermally conductive auxiliary structure provides conductive heat transport from the at least one secondary heat generating component to the at least one thermally conductive coolant-carrying tube coupled thereto, and hence via convection to liquid coolant passing therethrough.
    Type: Grant
    Filed: October 10, 2006
    Date of Patent: August 5, 2008
    Assignee: International Business Machines Corporation
    Inventors: Levi A. Campbell, Richard C. Chu, Michael J. Ellsworth, Jr., Madhusudan K. Iyengar, Randall G. Kemink, Roger R. Schmidt, Robert E. Simons
  • Patent number: 7405936
    Abstract: A hybrid cooling system and method of fabrication are provided for a multi-component electronics system. The cooling system includes an air moving device for establishing air flow across at least one primary and at least one secondary heat generating component to be cooled; and a liquid-based cooling subsystem including at least one cold plate, physically coupled to the at least one primary heat generating component, and a thermally conductive coolant-carrying tube in fluid communication with the at least one cold plate. A thermally conductive auxiliary structure is coupled to the coolant-carrying tube and includes a plurality of thermally conductive fins extending from a surface thereof. The plurality of thermally conductive fins are disposed at least partially over the at least one secondary heat generating component to be cooled, and provide supplemental cooling of at least a portion of the air flow established across the multiple components of the electronics system.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: July 29, 2008
    Assignee: International Business Machines Corporation
    Inventors: Levi A. Campbell, Richard C. Chu, Michael J. Ellsworth, Jr., Madhusudan K. Iyengar, Roger R. Schmidt, Robert E. Simons
  • Publication number: 20080174961
    Abstract: A hybrid cooling system and method of fabrication are provided for a multi-component electronics system. The cooling system includes an air moving device for establishing air flow across at least one primary and at least one secondary heat generating component to be cooled; and a liquid-based cooling subsystem including at least one cold plate, physically coupled to the at least one primary heat generating component, and a thermally conductive coolant-carrying tube in fluid communication with the at least one cold plate. A thermally conductive auxiliary structure is coupled to the coolant-carrying tube and includes a plurality of thermally conductive fins extending from a surface thereof. The plurality of thermally conductive fins are disposed at least partially over the at least one secondary heat generating component to be cooled, and provide supplemental cooling of at least a portion of the air flow established across the multiple components of the electronics system.
    Type: Application
    Filed: March 26, 2008
    Publication date: July 24, 2008
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Levi A. CAMPBELL, Richard C. CHU, Michael J. ELLSWORTH, Madhusudan K. IYENGAR, Roger R. SCHMIDT, Robert E. SIMONS
  • Publication number: 20080169790
    Abstract: A high capacity, high charge rate lithium secondary cell includes a high capacity lithium-containing positive electrode in electronic contact with a positive electrode current collector, said current collector in electrical connection with an external circuit, a high capacity negative electrode in electronic contact with a negative electrode current collector, said current collector in electrical connection with an external circuit, a separator positioned between and in ionic contact with the cathode and the anode, and an electrolyte in ionic contact with the positive and negative electrodes, wherein the total area specific impedance for the cell and the relative area specific impedances for the positive and negative electrodes are such that, during charging at greater than or equal to 4C, the negative electrode potential is above the potential of metallic lithium.
    Type: Application
    Filed: August 16, 2007
    Publication date: July 17, 2008
    Applicant: A123 SYSTEMS, INC.
    Inventors: Antoni S. GOZDZ, Andrew C. CHU, Yet Ming CHIANG, Gilbert N. RILEY
  • Publication number: 20080170366
    Abstract: Cooling apparatuses and methods are provided for cooling an assembly including a substrate supporting multiple electronics components. The cooling apparatus includes: multiple discrete cold plates, each having a coolant inlet, a coolant outlet and at least one coolant chamber disposed therebetween; and multiple coolant-carrying tubes, each tube extending from a respective cold plate and being in fluid communication with the coolant inlet or outlet of the cold plate. An enclosure is provided having a perimeter region which engages the substrate to form a cavity with the electronics components and cold plates being disposed within the cavity. The enclosure is configured with multiple bores, each bore being sized and located to receive a respective coolant-carrying tube of the tubes extending from the cold plates. Further, the enclosure is configured with a manifold in fluid communication with the tubes for distributing coolant in parallel to the cold plates.
    Type: Application
    Filed: March 25, 2008
    Publication date: July 17, 2008
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Levi A. CAMPBELL, Richard C. CHU, Michael J. ELLSWORTH, Madhusudan K. IYENGAR, Roger R. SCHMIDT, Robert E. SIMONS
  • Patent number: 7400505
    Abstract: A hybrid cooling system and method of fabrication are provided for a multi-component electronics system. The cooling system includes an air moving device for establishing air flow across at least one primary and at least one secondary heat generating component to be cooled; and a liquid-based cooling subsystem including at least one cold plate, physically coupled to the at least one primary heat generating component, and a thermally conductive coolant-carrying tube in fluid communication with the at least one cold plate. A thermally conductive auxiliary structure is coupled to the coolant-carrying tube and includes a plurality of thermally conductive fins extending from a surface thereof. The plurality of thermally conductive fins are disposed at least partially over the at least one secondary heat generating component to be cooled, and provide supplemental cooling of at least a portion of the air flow established across the multiple components of the electronics system.
    Type: Grant
    Filed: October 10, 2006
    Date of Patent: July 15, 2008
    Assignee: International Business Machines Corporation
    Inventors: Levi A. Campbell, Richard C. Chu, Michael J. Ellsworth, Jr., Madhusudan K. Iyengar, Roger R. Schmidt, Robert E. Simons
  • Patent number: 7400504
    Abstract: Cooling apparatuses and methods are provided for cooling an assembly including a planar support structure supporting multiple electronics components. The cooling apparatus includes: multiple discrete cold plates, each having a coolant inlet, coolant outlet and at least one coolant carrying channel disposed therebetween; and a manifold for distributing coolant to and exhausting coolant from the cold plates. The cooling apparatus also includes multiple flexible hoses connecting the coolant inlets of the cold plates to the manifold, as well as the coolant outlets to the manifold, with each hose segment being disposed between a respective cold plate and the manifold. A biasing mechanism biases the cold plates away from the manifold and towards the electronics components, and at least one fastener secures the manifold to the support structure, compressing the biasing mechanism, and thereby forcing the parallel coupled cold plates towards their respective electronics components to ensure good thermal interface.
    Type: Grant
    Filed: October 11, 2007
    Date of Patent: July 15, 2008
    Assignee: International Business Machines Corporation
    Inventors: Levi A. Campbell, Richard C. Chu, Michael J. Ellsworth, Jr., Madhusudan K. Iyengar, Roger R. Schmidt, Robert E. Simons
  • Publication number: 20080165499
    Abstract: A coolant control unit for a liquid cooled electronics system is provided, which includes an external coolant inlet and outlet for receiving and returning external coolant; an internal coolant loop for circulating coolant to the electronics system; a first and second control valve coupling the external coolant inlet and outlet to the internal coolant loop; a heat exchanger connected between the first and second control valves; and control logic for controlling operation of the coolant control unit in one of an external coolant mode and an internal coolant mode. In the external coolant mode, the first and second control valves allow passage of external coolant through the internal coolant loop to the electronics system, and in the internal coolant mode, the first and second control valves isolate coolant within the internal coolant loop from the external coolant inlet and outlet, and pass the coolant therein through the heat exchanger.
    Type: Application
    Filed: March 24, 2008
    Publication date: July 10, 2008
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Levi A. CAMPBELL, Richard C. CHU, Michael J. ELLSWORTH, Madhusudan K. IYENGAR, Roger R. SCHMIDT, Robert E. SIMONS
  • Patent number: 7397661
    Abstract: Augmenting air cooling of electronics system using a cooling fluid to cool air entering the system, and to remove the heat dissipated by the electronics. A cooled electronics system includes a frame with drawers containing electronics components to be cooled. The frame includes a front with an air inlet and a back with an air outlet. A cabinet encases the frame, and includes a front cover positioned over the air inlet, a back cover positioned over the air outlet, and first and second side air returns at opposite sides of the frame. At least one air moving device establishes air flow across the electronics drawers. The air flow bifurcates at the back cover and returns to the air inlet via the first and second side air returns and the front cover. An air-to-liquid heat exchanger cools the air flowing across the electronics drawers.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: July 8, 2008
    Assignee: International Business Machines Corporation
    Inventors: Levi A. Campbell, Richard C. Chu, Michael J. Ellsworth, Jr., Madhusudan K. Iyengar, Roger R. Schmidt, Robert E. Simons
  • Publication number: 20080158815
    Abstract: Augmenting air cooling of electronics system using a cooling fluid to cool air entering the system, and to remove the heat dissipated by the electronics. A cooled electronics system includes a frame with drawers containing electronics components to be cooled. The frame includes a front with an air inlet and a back with an air outlet. A cabinet encases the frame, and includes a front cover positioned over the air inlet, a back cover positioned over the air outlet, and first and second side air returns at opposite sides of the frame. At least one air moving device establishes air flow across the electronics drawers. The air flow bifurcates at the back cover and returns to the air inlet via the first and second side air returns and the front cover. An air-to-liquid heat exchanger cools the air flowing across the electronics drawers.
    Type: Application
    Filed: March 17, 2008
    Publication date: July 3, 2008
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Levi A. CAMPBELL, Richard C. CHU, Michael J. ELLSWORTH, Madhusudan K. IYENGAR, Roger R. SCHMIDT, Robert E. SIMONS
  • Patent number: 7389226
    Abstract: Primary and alternate optimization procedures are used to improve the ITU-T G.723.1 speech coding standard (the “Standard”) by replacing the Hamming window of the Standard with an optimized window, with two windows, or with two windows and an additional performance of an autocorrelation method. When two windows replace the Hamming window, at least one of which is an optimized window, generally the first is used to determine optimized unquantized LP coefficients which are used to define an optimized perceptual weighting filter, and the second is used to determine optimized unquantized LP coefficients which are used to determine optimized synthesis coefficients. Optimized windows created using the primary and alternate optimization procedures and used in the Standard yield improvements in the objective and subjective quality of synthesized speech produced by the Standard. The improved Standard, methods, and window can all be implemented as computer readable software code.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: June 17, 2008
    Assignee: NTT Docomo, Inc.
    Inventor: Wai C. Chu
  • Patent number: 7385817
    Abstract: Cooling apparatuses and methods are provided for cooling an assembly including a substrate supporting multiple electronics components. The cooling apparatus includes: multiple discrete cold plates, each having a coolant inlet, a coolant outlet and at least one coolant chamber disposed therebetween; and multiple coolant-carrying tubes, each tube extending from a respective cold plate and being in fluid communication with the coolant inlet or outlet of the cold plate. An enclosure is provided having a perimeter region which engages the substrate to form a cavity with the electronics components and cold plates being disposed within the cavity. The enclosure is configured with multiple bores, each bore being sized and located to receive a respective coolant-carrying tube of the tubes extending from the cold plates. Further, the enclosure is configured with a manifold in fluid communication with the tubes for distributing coolant in parallel to the cold plates.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: June 10, 2008
    Assignee: International Business Machines Corporation
    Inventors: Levi A. Campbell, Richard C. Chu, Michael J. Ellsworth, Madhusudan K. Iyengar, Roger R. Schmidt, Robert E. Simons
  • Patent number: 7385810
    Abstract: Apparatus and method are provided for facilitating cooling of an electronics rack employing a heat exchange assembly mounted to an outlet door cover hingedly affixed to an air outlet side of the rack. The heat exchange assembly includes a support frame, an air-to-liquid heat exchanger, and first and second perforated planar surfaces covering first and second main sides, respectively, of the air-to-liquid heat exchanger. The heat exchanger is supported by the support frame and includes inlet and outlet plenums disposed adjacent to the edge of the outlet door cover hingedly mounted to the rack. Each plenum is in fluid communication with a respective connect coupling, and the heat exchanger further includes multiple horizontally-oriented heat exchange tube sections each having serpentine cooling channel with an inlet and an outlet coupled to the inlet plenum and outlet plenum, respectively. Fins extend from the heat exchange tube sections.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: June 10, 2008
    Assignee: International Business Machines Corporation
    Inventors: Richard C. Chu, Michael J. Ellsworth, Jr., Donald W. Porter, Roger R. Schmidt, Robert E. Simons
  • Publication number: 20080133251
    Abstract: A method for energy based, non-uniform time-scale compression of audio signals includes receiving a frame of data corresponding to an input audio signal and segmenting the data into a plurality of segments. The method further includes estimating a value related to energy of the frame of data, determining a peak energy estimate for the frame, determining an energy threshold based on the peak energy estimate of the frame and comparing the value related to energy of the frame of the data with the energy threshold to control time-scale compression of the audio data.
    Type: Application
    Filed: January 9, 2008
    Publication date: June 5, 2008
    Inventors: Wai C. Chu, Khosrow Lashkari
  • Publication number: 20080133252
    Abstract: A method for energy based, non-uniform time-scale compression of audio signals includes receiving a frame of data corresponding to an input audio signal and segmenting the data into a plurality of segments. The method further includes estimating a value related to energy of the frame of data, determining a peak energy estimate for the frame, determining an energy threshold based on the peak energy estimate of the frame and comparing the value related to energy of the frame of the data with the energy threshold to control time-scale compression of the audio data.
    Type: Application
    Filed: January 9, 2008
    Publication date: June 5, 2008
    Inventors: Wai C. Chu, Khosrow Lashkari
  • Patent number: 7380409
    Abstract: An isolation valve assembly, a coolant connect/disconnect assembly, a cooled multi-blade electronics center, and methods of fabrication thereof are provided employing an isolation valve and actuation mechanism. The isolation valve is disposed within at least one of a coolant supply or return line providing liquid coolant to the electronics subsystem. The actuation member is coupled to the isolation valve to automatically translate a linear motion, resulting from insertion of the electronics subsystem into the operational position within the electronics housing, into a rotational motion to open the isolation valve and allow coolant to pass. The actuation mechanism, which operates to automatically close the isolation valve when the liquid cooled electronics subsystem is withdrawn from the operational position, can be employed in combination with a compression valve coupling, with one fitting of the compression valve coupling being disposed serially in fluid communication with the isolation valve.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: June 3, 2008
    Assignee: International Business Machines Corporation
    Inventors: Levi A. Campbell, Richard C. Chu, Michael J. Ellsworth, Madhusudan K. Iyengar, Donald W. Porter, Roger R. Schmidt, Robert E. Simons
  • Patent number: 7375962
    Abstract: A cooling apparatus and a direct cooling impingement module are provided, along with a method of fabrication thereof. The cooling apparatus and direct impingement cooling module include a manifold structure and a jet orifice plate for injecting coolant onto a surface to be cooled. The jet orifice plate, which includes a plurality of jet orifices for directing coolant at the surface to be cooled, is a unitary plate configured with a plurality of jet orifice structures. Each jet orifice structure projects from a lower surface of the jet orifice plate towards the surface to be cooled, and includes a respective jet orifice. The jet orifice structures are spaced to define coolant effluent removal regions therebetween which facilitate removal of coolant effluent from over a center region of the electronic component being cooled to a peripheral region thereof, thereby reducing pressure drop across the jet orifice plate.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: May 20, 2008
    Assignee: International Business Machines Corporation
    Inventors: Levi A. Campbell, Richard C. Chu, Michael J. Ellsworth, Jr., Madhusudan K. Iyengar, Roger R. Schmidt, Robert E. Simons
  • Publication number: 20080109909
    Abstract: The present invention provides a way to secure data accessed by a software package pre-loaded on a computer system (for delivery to a customer). Specifically, under the present invention, customer data is loaded on a computer system along with any software package(s) that access the customer data prior to shipping the computer system to the customer. Also prior to shipping, a set (e.g., one or more) of passwords for accessing the data such as an administrative password and a hard disk password are set. After the computer system is shipped to the customer, confirmation of proper delivery will be sought. Once this confirmation is received, an access code such as a key or the set of passwords themselves will be shipped to the customer to unlock and use the data.
    Type: Application
    Filed: November 3, 2006
    Publication date: May 8, 2008
    Inventors: David B. Rhoades, Simon C. Chu, William M. Privette
  • Publication number: 20080092387
    Abstract: A cooling system assembly method including: providing a support fixture having a multi-level support surface and multiple positioning dowels extending therefrom; positioning multiple liquid-cooled cold plates on the support surface employing the multiple dowels, the dowels providing relative positioning and alignment of the cold plates for facilitating subsequent coupling thereof to electronic components to be cooled; sealing multiple coolant-carrying tubes in fluid communication with the cold plates; and sealing a header subassembly to the coolant-carrying tubes to provide an assembled liquid-based cooling system. In operation, the support fixture facilitates shipping of the assembled cooling system by maintaining the components in fixed relation. A transfer fixture is employed in removing the cooling system from the support fixture and placing the cooling system in engagement with the electronics system.
    Type: Application
    Filed: October 10, 2006
    Publication date: April 24, 2008
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Levi A. Campbell, Richard C. Chu, Michael J. Ellsworth, Madhusudan K. Iyengar, Roger R. Schmidt, Robert E. Simons