Patents by Inventor Duc Ho

Duc Ho 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: 20240104164
    Abstract: Numerous examples are disclosed of verification circuitry and associated methods in an artificial neural network. In one example, a system comprises a vector-by-matrix multiplication array comprising a plurality of non-volatile memory cells arranged in rows and columns, the non-volatile memory cells respectively capable of storing one of N possible levels corresponding to one of N possible currents, and a plurality of output blocks to receive current from respective columns of the vector-by-matrix multiplication array and generate voltages during a verify operation of the vector-by-matrix multiplication and generate digital outputs during a read operation of the vector-by-matrix multiplication.
    Type: Application
    Filed: December 13, 2022
    Publication date: March 28, 2024
    Inventors: HIEU VAN TRAN, STEPHEN TRINH, STANLEY HONG, THUAN VU, DUC NGUYEN, HIEN HO PHAM
  • Publication number: 20190305832
    Abstract: A transmission protocol for a multi-way massive MIMO relay system uses linear processing, self-interference cancelation and successive cancelation decoding to significantly reduce the number of time-slots required for data exchange amongst user devices compared to that for the conventional data transmission protocol. As a result, the spectral efficiency of the system is significantly increased.
    Type: Application
    Filed: March 29, 2018
    Publication date: October 3, 2019
    Inventors: Michail Matthaiou, Hien Quoc Ngo, Chung Duc Ho, Long Dinh Nguyen
  • Patent number: 10127969
    Abstract: Systems, devices and methods are disclosed. In an embodiment of one such method, a method of decoding received command signals, the method comprises decoding the received command signals in combination with a signal provided to a memory address node at a first clock edge of a clock signal to generate a plurality of memory control signals. The received command signals, in combination with the signal provided to the memory address node at the first clock edge of the clock signal, represent a memory command. Furthermore, the signal provided to the memory address node at a second clock edge of the clock signal is not decoded in combination with the received command signals. The memory command may be a reduced power command and/or a no operation command.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: November 13, 2018
    Assignee: Micron Technology, Inc.
    Inventors: Scott Smith, Duc Ho, J. Thomas Pawlowski
  • Publication number: 20180094786
    Abstract: The invention introduces converging lenses connecting with optical fibers and a device for receiving sunlight that uses these lenses to converge sunlight from every angle of the sun during the day and the collected light beam at the output is quite parallel. To converge light from every angle of the sun, without using any motion part, small lenses are arranged to build a convex surface. Sunlight collected by these lenses become a parallel light beam and are guided by optical fibers. These optical fibers are arranged tightly to build a bundle of optical fibers in order to make it easier to further transmit and to use at the output of the device.
    Type: Application
    Filed: October 12, 2017
    Publication date: April 5, 2018
    Applicant: University of Science, Vietnam National University - Hanoi
    Inventors: Thuat Tran Nguyen, Hieu Chi Hoang, Quan Duc Ho, Quan Quang Nguyen, Hai Hoang Nguyen
  • Publication number: 20170186475
    Abstract: Systems, devices and methods are disclosed. In an embodiment of one such method, a method of decoding received command signals, the method comprises decoding the received command signals in combination with a signal provided to a memory address node at a first clock edge of a clock signal to generate a plurality of memory control signals. The received command signals, in combination with the signal provided to the memory address node at the first clock edge of the clock signal, represent a memory command. Furthermore, the signal provided to the memory address node at a second clock edge of the clock signal is not decoded in combination with the received command signals. The memory command may be a reduced power command and/or a no operation command.
    Type: Application
    Filed: March 10, 2017
    Publication date: June 29, 2017
    Applicant: Micron Technology, Inc.
    Inventors: Scott Smith, Duc Ho, J. Thomas Pawlowski
  • Patent number: 9633713
    Abstract: Methods are disclosed. In an embodiment of one such method, a method of receiving command signals, the method comprises receiving command signals in combination with a signal provided to a memory address node at a first clock edge and a second clock edge of a clock signal to generate a plurality of memory control signals. The received command signals, in combination with the signal provided to the memory address node at the first clock edge and the second clock edge of the clock signal, represents memory commands.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: April 25, 2017
    Assignee: Micron Technology, Inc.
    Inventors: Scott Smith, Duc Ho, J. Thomas Pawlowski
  • Publication number: 20160189763
    Abstract: Systems, devices and methods are disclosed. In an embodiment of one such method, a method of decoding received command signals, the method comprises decoding the received command signals in combination with a signal provided to a memory address node at a first clock edge of a clock signal to generate a plurality of memory control signals. The received command signals, in combination with the signal provided to the memory address node at the first clock edge of the clock signal, represent a memory command. Furthermore, the signal provided to the memory address node at a second clock edge of the clock signal is not decoded in combination with the received command signals. The memory command may be a reduced power command and/or a no operation command.
    Type: Application
    Filed: March 7, 2016
    Publication date: June 30, 2016
    Applicant: Micron Technology, Inc.
    Inventors: Scott Smith, Duc Ho, J. Thomas Pawlowski
  • Patent number: 9281037
    Abstract: Systems, devices and methods are disclosed. In an embodiment of one such method, a method of decoding received command signals, the method comprises decoding the received command signals in combination with a signal provided to a memory address node at a first clock edge of a clock signal to generate a plurality of memory control signals. The received command signals, in combination with the signal provided to the memory address node at the first clock edge of the clock signal, represent a memory command. Furthermore, the signal provided to the memory address node at a second clock edge of the clock signal is not decoded in combination with the received command signals. The memory command may be a reduced power command and/or a no operation command.
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: March 8, 2016
    Assignee: Micron Technology, Inc.
    Inventors: Scott Smith, Duc Ho, J. Thomas Pawlowski
  • Publication number: 20100214864
    Abstract: Systems, devices and methods are disclosed. In an embodiment of one such device, an embodiment of a memory device includes a command decoder that is operable to decode received write enable, row address strobe and column address strobe signals to place the memory device in at least one reduced power state despite the absence of either a clock enable signal or a chip select signal. The command decoder performs this function by decoding the write enable, row address strobe and column address strobe signals in combination with at least one address signal received by the memory device. The command decoder can also decode a no operation command, which differs from the at least one reduced power state by only the state of the write enable signal. As a result, when the at least one reduced power state is terminated by a transition of the write enable signal, the memory device automatically transitions to a no operation mode.
    Type: Application
    Filed: May 7, 2010
    Publication date: August 26, 2010
    Applicant: Micron Technology, Inc.
    Inventors: Scott Smith, Duc Ho, J. Thomas Pawlowski
  • Patent number: 7729191
    Abstract: Systems, devices and methods are disclosed. In an embodiment of one such device, an embodiment of a memory device includes a command decoder that is operable to decode received write enable, row address strobe and column address strobe signals to place the memory device in at least one reduced power state despite the absence of either a clock enable signal or a chip select signal. The command decoder performs this function by decoding the write enable, row address strobe and column address strobe signals in combination with at least one address signal received by the memory device. The command decoder can also decode a no operation command, which differs from the at least one reduced power state by only the state of the write enable signal. As a result, when the at least one reduced power state is terminated by a transition of the write enable signal, the memory device automatically transitions to a no operation mode.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: June 1, 2010
    Assignee: Micron Technology, Inc.
    Inventors: Scott Smith, Duc Ho, J. Thomas Pawlowski
  • Publication number: 20090067277
    Abstract: Systems, devices and methods are disclosed. In an embodiment of one such device, an embodiment of a memory device includes a command decoder that is operable to decode received write enable, row address strobe and column address strobe signals to place the memory device in at least one reduced power state despite the absence of either a clock enable signal or a chip select signal. The command decoder performs this function by decoding the write enable, row address strobe and column address strobe signals in combination with at least one address signal received by the memory device. The command decoder can also decode a no operation command, which differs from the at least one reduced power state by only the state of the write enable signal. As a result, when the at least one reduced power state is terminated by a transition of the write enable signal, the memory device automatically transitions to a no operation mode.
    Type: Application
    Filed: September 6, 2007
    Publication date: March 12, 2009
    Applicant: Micron Technology, Inc.
    Inventors: Scott Smith, Duc Ho, J. Thomas Pawlowski
  • Publication number: 20060262630
    Abstract: The present technique relates to a method and apparatus for managing voltage buses. In a memory device, such as SRAM or DRAM, a periphery voltage bus may supply voltage to periphery circuitry and an array voltage bus may supply voltage to array circuitry. A bridge circuit may be utilized to isolate the buses from each other and couple the buses together, depending on the control signals are received by the bridge circuit. As such, the bridge circuit enhances the operation of the memory device by reducing duplicative circuits and equalizing the voltage that are applied to the buses. In addition, the bridge circuit isolates the buses from each other to protect sensitive circuitry in the array and periphery circuitry from noise on the other bus.
    Type: Application
    Filed: July 27, 2006
    Publication date: November 23, 2006
    Inventors: Duc Ho, Scott Smith
  • Publication number: 20050201178
    Abstract: The present technique relates to a method and apparatus to provide a deep power down mode. In a memory device, such as DRAM or SRAM, various internal voltage buses provide power throughout the semiconductor chip. In a deep power down mode, grounding devices may be utilized to ground the internal voltage buses. With the internal voltage buses grounded, the outputs of the level shifters, which are control signals, may need to be forced into specific states. Through the use of the grounding devices and level shifters, leakage may be reduced and latch-up conditions may be reduced. As a result, the operation of the semiconductor chip may be enhanced because the problems associated with grounding the internal voltage buses may be diminished.
    Type: Application
    Filed: March 10, 2004
    Publication date: September 15, 2005
    Inventors: Duc Ho, Scott Smith
  • Publication number: 20050201183
    Abstract: Column addresses are generated by a burst controller that includes respective latches for the three low-order bits of a column address. The two higher order bits of the latched address bits and their compliments are applied to respective first multiplexers along with respective bits from a burst counter. The first multiplexers apply the latched address bits and their compliments to respective second multiplexers during a first bit of a burst access, and bits from a burst counter during the remaining bits of the burst. The second multiplexers are operable responsive to a control signal to couple either the latched address bits or their compliments to respective outputs for use as an internal address. The control signal is generated by an adder logic circuit that receives the two low-order bits of the column address.
    Type: Application
    Filed: January 24, 2005
    Publication date: September 15, 2005
    Inventor: Duc Ho
  • Publication number: 20050140349
    Abstract: The present technique relates to a method and apparatus for managing voltage buses. In a memory device, such as SRAM or DRAM, a periphery voltage bus may supply voltage to periphery circuitry and an array voltage bus may supply voltage to array circuitry. A bridge circuit may be utilized to isolate the buses from each other and couple the buses together, depending on the control signals are received by the bridge circuit. As such, the bridge circuit enhances the operation of the memory device by reducing duplicative circuits and equalizing the voltage that are applied to the buses. In addition, the bridge circuit isolates the buses from each other to protect sensitive circuitry in the array and periphery circuitry from noise on the other bus.
    Type: Application
    Filed: December 31, 2003
    Publication date: June 30, 2005
    Inventors: Duc Ho, Scott Smith
  • Patent number: 6826092
    Abstract: An improved predriver circuit for an output buffer is provided that can enable the output buffer to operate well within maximum and minimum IOL current specifications at lower internally regulated voltages. The predriver circuit comprises a limiter device configured to limit or otherwise regulate the maximum gate voltage provided to the gate of the pull-down transistor device. As a result, the pull-down transistor device can be sized optimally to provide additional margin to exceed the minimum IOL specification, while also improving the margin under the maximum IOL specification. The device is configured to limit the maximum gate voltage of the output pull-down transistor device to less than the maximum external power supply voltage.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: November 30, 2004
    Assignee: Micron Technology, Inc.
    Inventors: Duc Ho, Gary L. Howe
  • Publication number: 20040150435
    Abstract: An improved predriver circuit for an output buffer is provided that can enable the output buffer to operate well within maximum and minimum IOL current specifications at lower internally regulated voltages. The predriver circuit comprises a limiter device configured to limit or otherwise regulate the maximum gate voltage provided to the gate of the pull-down transistor device. As a result, the pull-down transistor device can be sized optimally to provide additional margin to exceed the minimum IOL specification, while also improving the margin under the maximum IOL specification. The device is configured to limit the maximum gate voltage of the output pull-down transistor device to less than the maximum external power supply voltage.
    Type: Application
    Filed: January 20, 2004
    Publication date: August 5, 2004
    Applicant: Micron Technology, Inc.
    Inventors: Duc Ho, Gary L. Howe
  • Patent number: 6707722
    Abstract: An improved predriver circuit for an output buffer is provided that can enable the output buffer to operate well within maximum and minimum IOL current specifications at lower internally regulated voltages. The predriver circuit comprises a limiter device configured to limit or otherwise regulate the maximum gate voltage provided to the gate of the pull-down transistor device. As a result, the pull-down transistor device can be sized optimally to provide additional margin to exceed the minimum IOL specification, while also improving the margin under the maximum IOL specification. The device is configured to limit the maximum gate voltage of the output pull-down transistor device to less than the maximum external power supply voltage.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: March 16, 2004
    Assignee: Micron Technology, Inc.
    Inventors: Duc Ho, Gary L. Howe
  • Publication number: 20040017696
    Abstract: An improved predriver circuit for an output buffer is provided that can enable the output buffer to operate well within maximum and minimum IOL current specifications at lower internally regulated voltages. The predriver circuit comprises a limiter device configured to limit or otherwise regulate the maximum gate voltage provided to the gate of the pull-down transistor device. As a result, the pull-down transistor device can be sized optimally to provide additional margin to exceed the minimum IOL specification, while also improving the margin under the maximum IOL specification. The device is configured to limit the maximum gate voltage of the output pull-down transistor device to less than the maximum external power supply voltage.
    Type: Application
    Filed: July 23, 2002
    Publication date: January 29, 2004
    Applicant: Micron Technology, Inc.
    Inventors: Duc Ho Allen, Gary L. Howe
  • Patent number: 6242936
    Abstract: A circuit (100) that drives word lines and tests a word line (102) in a semiconductor device is disclosed. A charge circuit (108) couples a supply voltage (VPP) to a charge node (106) according to a potential at a boot node (110). The charge node (106) supplies a charge voltage for the word line (102). In a standard cycle, the boot node (110) is charged to a high voltage, and maintained at the high potential, to keep the word line (102) charged. In a test cycle, the boot node (110) is charged to a high voltage, and then discharged to a low voltage, thereby isolating the charge node (106) and the word line (102). In the event the word line (102) suffers from current leakage, a drop in potential will be detected at the charge rode (106).
    Type: Grant
    Filed: August 3, 1999
    Date of Patent: June 5, 2001
    Assignee: Texas Instruments Incorporated
    Inventors: Michael Duc Ho, Duy-Loan T. Le, Scott E. Smith