Patents by Inventor Hong-Him Lim

Hong-Him Lim 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: 8912818
    Abstract: A calibration circuit includes an amplifier, a current steering digital-to-analog converter (DAC), a comparator, a slew calibration network, and an on-die termination (ODT) network. The amplifier generally has a first input, a second input, and an output. The first input generally receives a reference signal. The current steering digital-to-analog converter (DAC) generally has a first input coupled to the output of the amplifier, a first output coupled to the second input of the amplifier, and a second output coupled to a circuit node. The comparator generally has a first input receiving the reference signal, a second input coupled to the circuit node, and an output at which an output of the calibration circuit may be presented. The slew calibration network is generally coupled to the circuit node and configured to adjust a slew rate of the calibration circuit. The on-die termination (ODT) network is generally coupled to the circuit node.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: December 16, 2014
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Dharmesh Bhakta, Hong-Him Lim, Cheng-Gang Kong, Todd Randazzo
  • Patent number: 8324927
    Abstract: An input/output (I/O) cell including one or more driver-capable segments and one or more on-die termination (ODT) capable segments. The I/O cell may be configured as an output driver in a first mode and Thevenin equivalent termination in a second mode.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: December 4, 2012
    Assignee: LSI Corporation
    Inventors: Dharmesh Bhakta, Hong-Him Lim, Cheng-Gang Kong, Todd Randazzo
  • Patent number: 8098073
    Abstract: An apparatus comprising a test termination card having a first set of connections and a second set of connections. The first set of connections may be configured to connect to a specific pinout of a device under test. The second set of connections may be configured to connect to a general pinout of a tester load board. The termination card may toggle between (a) connecting the first set of connectors to the second set of connectors to implement a first test type and (b) disconnecting the first set of connectors from the second set of connectors to implement a second test type.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: January 17, 2012
    Assignee: LSI Corporation
    Inventors: Derrick Sai-Tang Butt, Hong-Him Lim, David Carkeek
  • Publication number: 20110084725
    Abstract: An input/output (I/O) cell including one or more driver-capable segments and one or more on-die termination (ODT) capable segments. The I/O cell may be configured as an output driver in a first mode and Thevenin equivalent termination in a second mode.
    Type: Application
    Filed: December 16, 2010
    Publication date: April 14, 2011
    Inventors: Dharmesh Bhakta, Hong-Him Lim, Cheng-Gang Kong, Todd Randazzo
  • Patent number: 7876123
    Abstract: An input/output (I/O) cell including one or more driver-capable segments and one or more on-die termination (ODT) capable segments. The I/O cell may be configured as an output driver in a first mode and Thevenin equivalent termination in a second mode.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: January 25, 2011
    Assignee: LSI Corporation
    Inventors: Dharmesh Bhakta, Hong-Him Lim, Cheng-Gang Kong, Todd Randazzo
  • Patent number: 7239170
    Abstract: Apparatus and methods are provided for improving data exchanges between electronic devices, such as memory controllers and RLDRAMs. An I/O cell includes a signal pad for transferring a first signal to an electronic device coupled thereto and for receiving a second signal from the electronic device. In one aspect, a duty cycle controller is coupled to the signal pad for balancing a duty cycle of the first signal with respect to a clock signal. In another aspect, dynamic switchable termination is coupled to the signal pad for providing termination impedance when the I/O cell is receiving the second signal.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: July 3, 2007
    Assignee: LSI Corporation
    Inventors: Victor Suen, William Lau, Hong-Him Lim, Cheng-Gang Kong
  • Publication number: 20050010833
    Abstract: Apparatus and methods are provided for improving data exchanges between electronic devices, such as memory controllers and RLDRAMs. An I/O cell includes a signal pad for transferring a first signal to an electronic device coupled thereto and for receiving a second signal from the electronic device. In one aspect, a duty cycle controller is coupled to the signal pad for balancing a duty cycle of the first signal with respect to a clock signal. In another aspect, dynamic switchable termination is coupled to the signal pad for providing termination impedance when the I/O cell is receiving the second signal.
    Type: Application
    Filed: July 8, 2003
    Publication date: January 13, 2005
    Inventors: Victor Suen, William Lau, Hong-Him Lim, Cheng-Gang Kong
  • Publication number: 20030224546
    Abstract: A method and apparatus for decoupling a voltage supply from a semiconductor device is provided. A substrate has a plurality of spaced apart electrical connections positioned on thereon, wherein at least first and second ones of the connections are coupled to first and second terminals of a voltage supply respectively. A capacitor is coupled to the substrate and interstitially positioned within the spaced apart connections. The capacitor has first and second leads coupled with the first and second terminals of the voltage supply. A semiconductor device is coupled to the substrate in mating relationship with the pattern of spaced apart electrical connections, wherein the capacitor is positioned below the semiconductor device and immediately adjacent the voltage supply terminals of the semiconductor device.
    Type: Application
    Filed: May 30, 2002
    Publication date: December 4, 2003
    Inventors: Wenjun W. Chen, Hong-Him Lim