Patents by Inventor Li-Kong Wang

Li-Kong Wang 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: 8495444
    Abstract: A number of performance parameters for the electronic system are determined at a particular age of the electronic system. The performance parameters can be correlated to maximum operating frequency of electronic components of the electronic system for the particular age of the electronic system. Operating frequency of the electronic components is adjusted in accordance with the performance parameters. The performance parameters may be predetermined (such as through reliability and burn-in testing), determined during the life of the electronic system, or some combination of these. Performance parameters can comprise prior operating frequencies, hours of operation, ambient temperature, and supply voltage. Performance parameters can comprise performance statistics determined using age-monitoring circuits, where an aged circuit is compared with a circuit enabled only for comparison. Performance statistics may also be determined though error detection circuits.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: July 23, 2013
    Assignee: International Business Machines Corporation
    Inventors: Daniel R. Knebel, William Robert Reohr, Li-Kong Wang
  • Patent number: 7778351
    Abstract: A CMOS receiver system having a tunable receiver having a tunable gain and a bandwidth system is provided. The tunable receiver includes means for receiving input signals; and a control circuit controlled by a control signal for tuning at least one of the gain and the bandwidth of the tunable receiver, wherein the control signal is indicative of a data rate of the input signals. Furthermore, a method is provided for tuning a CMOS receiver receiving input signals. The method includes the steps of receiving at least one control signal, and controlling one of gain and bandwidth of the CMOS receiver in accordance with the at least one control signal, wherein the at least one control signal is indicative of a data rate of the received input signals.
    Type: Grant
    Filed: April 9, 2002
    Date of Patent: August 17, 2010
    Assignee: International Business Machines Corporation
    Inventors: Louis L. Hsu, Li-Kong Wang, Philip J. Murfet
  • Patent number: 7475320
    Abstract: A number of performance parameters for the electronic system are determined at a particular age of the electronic system. The performance parameters can be correlated to maximum operating frequency of electronic components of the electronic system for the particular age of the electronic system. Operating frequency of the electronic components is adjusted in accordance with the performance parameters. The performance parameters may be predetermined (such as through reliability and burn-in testing), determined during the life of the electronic system, or some combination of these. Performance parameters can comprise prior operating frequencies, hours of operation, ambient temperature, and supply voltage. Performance parameters can comprise performance statistics determined using age-monitoring circuits, where an aged circuit is compared with a circuit enabled only for comparison. Performance statistics may also be determined though error detection circuits.
    Type: Grant
    Filed: August 19, 2003
    Date of Patent: January 6, 2009
    Assignee: International Business Machines Corporation
    Inventors: Daniel R. Knebel, William Robert Reohr, Li-Kong Wang
  • Patent number: 7447273
    Abstract: An integrated circuit is provided having a plurality of data transmitters, including a plurality of default data transmitters for transmitting data from a plurality of data sources and at least one redundancy data transmitter. A plurality of connection elements are provided having a first, low impedance connecting state and having a second, high impedance, disconnecting state. The connection elements are operable to disconnect a failing data transmitter from a corresponding output signal line and to connect the redundancy data transmitter to that output signal line in place of the failing data transmitter. In one preferred form, the connection elements include a fuse and an antifuse. In another form, the connection elements include micro-electromechanical (MEM) switches. The connecting elements preferably present the low impedance connecting state at frequencies which include signal switching frequencies above about 500 MHz.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: November 4, 2008
    Assignee: International Business Machines Corporation
    Inventors: Louis L. Hsu, Carl Radens, Li-Kong Wang
  • Publication number: 20080263383
    Abstract: A number of performance parameters for the electronic system are determined at a particular age of the electronic system. The performance parameters can be correlated to maximum operating frequency of electronic components of the electronic system for the particular age of the electronic system. Operating frequency of the electronic components is adjusted in accordance with the performance parameters. The performance parameters may be predetermined (such as through reliability and burn-in testing), determined during the life of the electronic system, or some combination of these. Performance parameters can comprise prior operating frequencies, hours of operation, ambient temperature, and supply voltage. Performance parameters can comprise performance statistics determined using age-monitoring circuits, where an aged circuit is compared with a circuit enabled only for comparison. Performance statistics may also be determined though error detection circuits.
    Type: Application
    Filed: June 27, 2008
    Publication date: October 23, 2008
    Applicant: International Business Machines Corporation
    Inventors: Daniel R. Knebel, William Robert Reohr, Li-Kong Wang
  • Publication number: 20080171418
    Abstract: A method and structure for an integrated circuit chip has a logic core which includes a plurality of insulating and conducting levels, an exterior conductor level and passive devices having a conductive polymer directly connected to the exterior conductor level. The passive devices contain RF devices which also includes resistor, capacitor, and/or inductor. The resistors can be serpentine resistors and the capacitors can be interdigitated capacitors.
    Type: Application
    Filed: March 25, 2008
    Publication date: July 17, 2008
    Applicant: International Business Machines Corporation
    Inventors: Lawrence A. Clevenger, Louis L. Hsu, Cart J. Radens, Li-Kong Wang, Kwong Hon Wong
  • Patent number: 7355872
    Abstract: A content addressable memory (“CAM”) system includes a plurality of segments arranged in an array, wherein each of the plurality of segments includes a plurality of CAM cells, each of the plurality of CAM cells includes a wordline, a matchline and a sinkline, the wordline being shared by all of the cells in the same row, the matchline and sinkline being shared by all of the cells in the same segment; and a corresponding method of searching within a CAM system includes providing an input word to the CAM system, comparing a portion of the input word in a segment of the CAM system, and propagating a mismatch to obviate the need for comparison in other segments of the CAM system.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: April 8, 2008
    Assignee: International Business Machines Corporation
    Inventors: Louis L. Hsu, Brian L. Ji, Li-Kong Wang
  • Patent number: 7216284
    Abstract: A content addressable memory (CAM). A data portion of the CAM array includes word data storage. Each word line includes CAM cells (dynamic or static) in the data portion and a common word match line. An error correction (e.g., parity) portion of the CAM array contains error correction cells for each word line. Error correction cells at each word line are connected to an error correction match line. A match on an error correction match line enables precharging a corresponding data match line. Only data on word lines with a corresponding match on an error correction match line are included in a data compare. Precharge power is required only for a fraction (inversely exponentially proportional to the bit length of error correction employed) of the full array.
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: May 8, 2007
    Assignee: International Business Machines Corp.
    Inventors: Louis L. Hsu, Brian L. Ji, Li-Kong Wang
  • Patent number: 7191371
    Abstract: A testing circuit for testing a series of at least three alternating transmitter and receiver links. The testing circuit including a built-in-self-test (BIST.) macro for generating test data and transmitting the test data to a first link of the series of transmitter and receiver links, and for receiving processed test data from a last link of the series of transmitter receiver links; and at least one test transmission line for transmitting test data received by a link of the series of transmitter and receiver links to a next link of the series of transmitter and receiver links, wherein the at least one test transmission line connects the at least three transmitter and receiver links.
    Type: Grant
    Filed: April 9, 2002
    Date of Patent: March 13, 2007
    Assignee: Internatioanl Business Machines Corporation
    Inventors: Louis L. Hsu, Li-Kong Wang
  • Patent number: 7176107
    Abstract: A hybrid substrate, i.e., a substrate fabricated from different materials, and method for fabricating the same are presented. The hybrid substrate is configured for fabricating more than two different devices thereon, has a high thermal conductivity, and is configured for patterning interconnects thereon for interconnecting the different devices fabricated on the hybrid substrate.
    Type: Grant
    Filed: August 12, 2005
    Date of Patent: February 13, 2007
    Assignee: International Business Machines Corporation
    Inventors: Louis L. Hsu, Li-Kong Wang
  • Publication number: 20060270098
    Abstract: A method and structure for an integrated circuit chip has a logic core which includes a plurality of insulating and conducting levels, an exterior conductor level and passive devices having a conductive polymer directly connected to the exterior conductor level. The passive devices contain RF devices which also includes resistor, capacitor, and/or inductor. The resistors can be serpentine resistors and the capacitors can be interdigitated capacitors.
    Type: Application
    Filed: August 4, 2006
    Publication date: November 30, 2006
    Inventors: Lawrence Clevenger, Louis Hsu, Carl Radens, Li-Kong Wang, Kwong Wong
  • Patent number: 7112502
    Abstract: A method and structure for an integrated circuit chip has a logic core which includes a plurality of insulating and conducting levels, an exterior conductor level and passive devices having a conductive polymer directly connected to the exterior conductor level. The passive devices contain RF devices which also includes resistor, capacitor, and/or inductor. The resistors can be serpentine resistors and the capacitors can be interdigitated capacitors.
    Type: Grant
    Filed: April 20, 2004
    Date of Patent: September 26, 2006
    Assignee: International Business Machines Corporation
    Inventors: Lawrence A. Clevenger, Louis L. Hsu, Carl J. Radens, Li-Kong Wang, Kwong Hon Wong
  • Patent number: 7088074
    Abstract: A system level device for battery and integrated circuit chip integration comprises at least one battery; at least one integrated circuit chip powered by the at least one battery; and a package connected to any of the at least one battery and the at least one integrated circuit chip, wherein the at least one battery connects to a pair of opposed upright ends of the package, wherein the at least one integrated circuit chip is disposed between the at least one battery and the package, and wherein the at least one integrated circuit chip lays on top of a portion of the package.
    Type: Grant
    Filed: January 2, 2002
    Date of Patent: August 8, 2006
    Assignee: International Business Machines Corporation
    Inventors: Lawrence A. Clevenger, Louis L. Hsu, Carl J. Radens, Li-Kong Wang, Kwong Hon Wong
  • Patent number: 7052937
    Abstract: Thermal cooling structures of diamond or diamond-like materials are provided for conducting heat away from semiconductor devices. A first silicon-on-insulator embodiment comprises a plurality of thermal paths, formed after shallow trench and device fabrication steps are completed, which extend through the buried oxide and provide heat dissipation through to the underlying bulk silicon substrate. The thermal conduction path material is preferably diamond which has high thermal conductivity with low electrical conductivity. A second diamond trench cooling structure, formed after device fabrication has been completed, comprises diamond shallow trenches disposed between the devices and extending through the buried oxide layer. An alternative diamond thermal cooling structure includes a diamond insulation layer deposited over the semiconductor devices in either an SOI or bulk silicon structure.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: May 30, 2006
    Assignee: International Business Machines Corporation
    Inventors: Lawrence A. Clevenger, Louis L. Hsu, Li-Kong Wang, Tsorng-Dih Yuan
  • Patent number: 7041525
    Abstract: A method and structure for a photodiode array comprising a plurality of photodiode cores, light sensing sidewalls along an exterior of the cores, logic circuitry above the cores, trenches separating the cores, and a transparent material in the trenches is disclosed. With the invention, the sidewalls are perpendicular to the surface of the photodiode that receives incident light. The light sensing sidewalls comprise a junction region that causes electron transfer when struck with light. The sidewalls comprise four vertical sidewalls around each island core. The logic circuitry blocks light from the core so light is primarily only sensed by the sidewalls.
    Type: Grant
    Filed: January 2, 2004
    Date of Patent: May 9, 2006
    Assignee: International Business Machines Corporation
    Inventors: Lawrence A. Clevenger, Louis L. Hsu, Carl J. Radens, Li-Kong Wang, Kwong Hon Wong
  • Patent number: 7029956
    Abstract: A memory system having a plurality of T-RAM cells arranged in an array is presented where each T-RAM cell has dual vertical devices and is fabricated over a SiC substrate. Each T-RAM cell has a vertical thyristor and a vertical transfer gate. The top surface of each thyristor is coplanar with the top surface of each transfer gate within the T-RAM array to provide a planar cell structure for the T-RAM array. A method is also presented for fabricating the T-RAM array having the vertical thyristors, the vertical transfer gates and the planar cell structure over the SiC substrate.
    Type: Grant
    Filed: September 19, 2003
    Date of Patent: April 18, 2006
    Assignee: International Business Machines Corp.
    Inventors: Louis L. Hsu, Li-Kong Wang
  • Patent number: 7023528
    Abstract: An electronically programmable mask for lithography has an array of individually controllable light sources aligned with an array of individually controllable liquid crystals, so that individual pixels may be turned on or off and phase-shifted to provide a desired light intensity distribution on a wafer. The mask may be used in a contact printing mode or in a reduction projection mode.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: April 4, 2006
    Assignee: International Business Machines Corporation
    Inventors: Louis L. Hsu, Carl J. Radens, Li-Kong Wang, Kwong Hon Wong
  • Patent number: 6994903
    Abstract: A hybrid substrate, i.e., a substrate fabricated from different materials, and method for fabricating the same are presented. The hybrid substrate is configured for fabricating more than two different devices thereon, has a high thermal conductivity, and is configured for patterning interconnects thereon for interconnecting the different devices fabricated on the hybrid substrate.
    Type: Grant
    Filed: January 3, 2002
    Date of Patent: February 7, 2006
    Assignee: International Business Machines Corp.
    Inventors: Louis L. Hsu, Li-Kong Wang
  • Publication number: 20050282323
    Abstract: A hybrid substrate, i.e., a substrate fabricated from different materials, and method for fabricating the same are presented. The hybrid substrate is configured for fabricating more than two different devices thereon, has a high thermal conductivity, and is configured for patterning interconnects thereon for interconnecting the different devices fabricated on the hybrid substrate.
    Type: Application
    Filed: August 12, 2005
    Publication date: December 22, 2005
    Applicant: IBM Corporation
    Inventors: Louis Hsu, Li-Kong Wang
  • Patent number: 6958522
    Abstract: A method and structure for an integrated circuit chip has a logic core which includes a plurality of insulating and conducting levels, an exterior conductor level and passive devices having a conductive polymer directly connected to the exterior conductor level. The passive devices contain RF devices which also includes resistor, capacitor, and/or inductor. The resistors can be serpentine resistors and the capacitors can be interdigitated capacitors.
    Type: Grant
    Filed: July 5, 2001
    Date of Patent: October 25, 2005
    Assignee: International Business Machines Corporation
    Inventors: Lawrence A. Clevenger, Louis L. Hsu, Carl J. Radens, Li-Kong Wang, Kwong Hon Wong