Patents by Inventor Henry Yeh

Henry Yeh 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: 11164624
    Abstract: A system to enable detection of the process corner of each of the P and N devices of an SRAM array (of bitcells) and of peripheral devices. This permits more focused (optimized and compensated) design of non-SRAM peripheral circuits and of read and write assist circuits for better handling of process distribution impact on circuits improving functionality and yield.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: November 2, 2021
    Assignee: Synopsys, inc.
    Inventors: Tzong-Kwang Henry Yeh, Jamil Kawa
  • Publication number: 20190189200
    Abstract: A system to enable detection of the process corner of each of the P and N devices of an SRAM array (of bitcells) and of peripheral devices. This permits more focused (optimized and compensated) design of non-SRAM peripheral circuits and of read and write assist circuits for better handling of process distribution impact on circuits improving functionality and yield.
    Type: Application
    Filed: February 25, 2019
    Publication date: June 20, 2019
    Inventors: Tzong-Kwang Henry Yeh, Jamil Kawa
  • Patent number: 10217508
    Abstract: A system to enable detection of the process corner of each of the P and N devices of an SRAM array (of bitcells) and of peripheral devices. This permits more focused (optimized and compensated) design of non-SRAM peripheral circuits and of read and write assist circuits for better handling of process distribution impact on circuits improving functionality and yield.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: February 26, 2019
    Assignee: Synopsys, Inc.
    Inventors: Tzong-Kwang Henry Yeh, Jamil Kawa
  • Patent number: 9857409
    Abstract: A circuit is powered through a P-type transistor whose thermal instability behavior is to be evaluated. The threshold of the P-type transistor under evaluation and consequently the saturation current of the transistor are reflected in the frequency of the circuit, which in one embodiment is a ring oscillator. Additional circuitry is connected to the P-type transistor and the ring oscillator to ensure the proper stress conditions for the transistor and consequently to the evaluation of the P-type transistor.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: January 2, 2018
    Assignee: Synopsys, Inc.
    Inventors: Jamil Kawa, Tzong-Kwang Henry Yeh, Shih-Yao Christine Sun, Raymond Tak-Hoi Leung
  • Publication number: 20170330613
    Abstract: A system to enable detection of the process corner of each of the P and N devices of an SRAM array (of bitcells) and of peripheral devices. This permits more focused (optimized and compensated) design of non-SRAM peripheral circuits and of read and write assist circuits for better handling of process distribution impact on circuits improving functionality and yield.
    Type: Application
    Filed: April 11, 2017
    Publication date: November 16, 2017
    Inventors: Tzong-Kwang Henry Yeh, Jamil Kawa
  • Patent number: 9817059
    Abstract: A circuit is powered through a transistor whose thermal instability behavior is to be evaluated in a stress test. The transistor is stressed during a stress phase of the stress test with a sensor circuit powered off and the Vds of the transistor is zero. The sensor circuit is powered on through the transistor during an evaluate phase of the stress test.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: November 14, 2017
    Assignee: SYNOPSYS, INC.
    Inventors: Jamil Kawa, Thu Nguyen, Tzong-Kwang Henry Yeh, Shih-Yao Christine Sun, Raymond Tak-Hoi Leung
  • Patent number: 9700766
    Abstract: A golf club head with an improved striking face is disclosed herein. More specifically, the present invention utilizes an innovative die quenching method that can alter the Young's modulus of the material of the striking face. The striking face portion of the present invention generally created from an ?+? titanium alloy such as SP 700 that contains a ? rich alloy composition to create more phase change in the alloying elements. In a preferred embodiment, the die quenching process could create a localized change in the material's Young's modulus throughout different regions of the striking face, resulting in a change in the Young's modulus of the material within the same striking face.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: July 11, 2017
    Assignee: Acushnet Company
    Inventors: Ryuichi Sugimae, Uday V. Deshmukh, Heng-Jui Henry Yeh
  • Patent number: 9433835
    Abstract: A golf club head with an improved striking face is disclosed herein. More specifically, the present invention utilizes an innovative die quenching method that can alter the Young's modulus of the material of the striking face. The striking face portion of the present invention generally created from an ?+? titanium alloy such as SP 700 that contains a ? rich alloy composition to create more phase change in the alloying elements. In a preferred embodiment, the die quenching process could create a localized change in the material's Young's modulus throughout different regions of the striking face, resulting in a change in the Young's modulus of the material within the same striking face.
    Type: Grant
    Filed: April 1, 2013
    Date of Patent: September 6, 2016
    Assignee: Acushnet Company
    Inventors: Ryuichi Sugimae, Uday V. Deshmukh, Heng-Jui Henry Yeh
  • Patent number: 9424951
    Abstract: A sensor circuit is used to provide bit-cell read strength distribution of an SRAM array. A current-mirror circuit mirroring the bit-line current of an SRAM array is used to power the sensor circuit. A reference current representing nominal bit-cell read current is used as a reference. The current-mirror circuit senses the bit-line current. The current-mirror and the ring oscillator are not part of the bit-line read path.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: August 23, 2016
    Assignee: Synopsys, Inc.
    Inventors: Raymond Tak-Hoi Leung, Tzong-Kwang Henry Yeh, Shih-Yao Christine Sun, Jamil Kawa
  • Publication number: 20150369855
    Abstract: A circuit is powered through a transistor whose thermal instability behavior is to be evaluated in a stress test. The transistor is stressed during a stress phase of the stress test with a sensor circuit powered off and the Vds of the transistor is zero. The sensor circuit is powered on through the transistor during an evaluate phase of the stress test.
    Type: Application
    Filed: June 23, 2015
    Publication date: December 24, 2015
    Applicant: SYNOPSYS, INC.
    Inventors: Jamil Kawa, Thu Nguyen, Tzong-Kwang Henry Yeh, Shih-Yao Christine Sun, Raymond Tak-Hoi Leung
  • Publication number: 20150360093
    Abstract: A golf club head with an improved striking face is disclosed herein. More specifically, the present invention utilizes an innovative die quenching method that can alter the Young's modulus of the material of the striking face. The striking face portion of the present invention generally created from an ?+? titanium alloy such as SP 700 that contains a ? rich alloy composition to create more phase change in the alloying elements. In a preferred embodiment, the die quenching process could create a localized change in the material's Young's modulus throughout different regions of the striking face, resulting in a change in the Young's modulus of the material within the same striking face.
    Type: Application
    Filed: July 30, 2015
    Publication date: December 17, 2015
    Inventors: Ryuichi Sugimae, Uday V. Deshmukh, Heng-Jui Henry Yeh
  • Publication number: 20150063009
    Abstract: A sensor circuit is used to provide bit-cell read strength distribution of an SRAM array. A current-mirror circuit mirroring the bit-line current of an SRAM array is used to power the sensor circuit. A reference current representing nominal bit-cell read current is used as a reference. The current-mirror circuit senses the bit-line current. The current-mirror and the ring oscillator are not part of the bit-line read path.
    Type: Application
    Filed: August 15, 2014
    Publication date: March 5, 2015
    Inventors: Raymond Tak-Hoi LEUNG, Tzong-Kwang Henry YEH, Shih-Yao Christine SUN, Jamil KAWA
  • Publication number: 20150061726
    Abstract: A circuit is powered through a P-type transistor whose thermal instability behavior is to be evaluated. The threshold of the P-type transistor under evaluation and consequently the saturation current of the transistor are reflected in the frequency of the circuit, which in one embodiment is a ring oscillator. Additional circuitry is connected to the P-type transistor and the ring oscillator to ensure the proper stress conditions for the transistor and consequently to the evaluation of the P-type transistor.
    Type: Application
    Filed: August 15, 2014
    Publication date: March 5, 2015
    Inventors: Jamil KAWA, Tzong-Kwang Henry YEH, Shih-Yao Christine SUN, Raymond Tak-Hoi LEUNG
  • Publication number: 20150063010
    Abstract: In one embodiment, one portion of an SRAM array is stressed by first writing a “1” in every bit of the array, followed by an evaluation of the relevant parameters of the array using a ring oscillator driven by a mirrored bit-line current, the ring oscillator not in line of the bit-line of the SRAM. The other portion of the array is then stressed after writing a “0” in every bit of the array. The evaluation procedure is then repeated.
    Type: Application
    Filed: August 15, 2014
    Publication date: March 5, 2015
    Inventors: Jamil KAWA, Tzong-Kwang Henry YEH, Shih-Yao Christine SUN, Raymond Tak-Hoi LEUNG
  • Patent number: 8892930
    Abstract: Systems and methods are disclosed for managing power consumption in electronic devices. In certain embodiments, an integrated circuit for managing power consumption in an electronic device includes an input/output (I/O) interface, a first circuit block coupled to the I/O interface, and an interface circuit coupled between the I/O interface and the first circuit block, the interface circuit configured to provide a defined logic state to the first circuit block or a second circuit block external to the integrated circuit if one of the first circuit block or the second circuit block is powered down. By providing a defined logic state to the first circuit block or the second circuit block when one of the first circuit block or the second circuit block is powered down, power consumption of the electronic device may be reduced.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: November 18, 2014
    Assignee: Integrated Device Technology Inc.
    Inventors: Tzong-Kwang Henry Yeh, Tak Kwong Wong
  • Publication number: 20140295988
    Abstract: A golf club head with an improved striking face is disclosed herein. More specifically, the present invention utilizes an innovative die quenching method that can alter the Young's modulus of the material of the striking face. The striking face portion of the present invention generally created from an ?+? titanium alloy such as SP 700 that contains a ? rich alloy composition to create more phase change in the alloying elements. In a preferred embodiment, the die quenching process could create a localized change in the material's Young's modulus throughout different regions of the striking face, resulting in a change in the Young's modulus of the material within the same striking face.
    Type: Application
    Filed: April 1, 2013
    Publication date: October 2, 2014
    Inventors: Ryuichi Sugimae, Uday V. Deshmukh, Heng-Jui Henry Yeh
  • Patent number: 7710789
    Abstract: A synchronous memory system configurable in a multiplexed or non-multiplexed mode. In the multiplexed mode, address and data are provided on a shared bus, and accesses to the memory system are qualified by memory access control signals, including an address strobe signal, a counter enable signal and a counter repeat signal. A read/write control signal is maintained for one cycle after the last valid access command to avoid bus turn-around problems. In the multiplexed mode, chip enable and output enable signals may be constantly activated, thereby simplifying associated printed circuit board design. Different ports of the synchronous memory system can be independently configured to operate in either the multiplexed or non-multiplexed mode.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: May 4, 2010
    Assignee: Integrated Device Technology, inc.
    Inventors: Tzong-Kwang (Henry) Yeh, Jiann-Jeng (John) Duh, Casey Springer
  • Publication number: 20100031073
    Abstract: Systems and methods are disclosed for managing power consumption in electronic devices. In certain embodiments, an integrated circuit for managing power consumption in an electronic device includes an input/output (I/O) interface, a first circuit block coupled to the I/O interface, and an interface circuit coupled between the I/O interface and the first circuit block, the interface circuit configured to provide a defined logic state to the first circuit block or a second circuit block external to the integrated circuit if one of the first circuit block or the second circuit block is powered down. By providing a defined logic state to the first circuit block or the second circuit block when one of the first circuit block or the second circuit block is powered down, power consumption of the electronic device may be reduced.
    Type: Application
    Filed: August 1, 2008
    Publication date: February 4, 2010
    Inventors: Tzong-Kwang Henry Yeh, Tak Kwong Wong
  • Publication number: 20090089538
    Abstract: A synchronous memory system configurable in a multiplexed or non-multiplexed mode. In the multiplexed mode, address and data are provided on a shared bus, and accesses to the memory system are qualified by memory access control signals, including an address strobe signal, a counter enable signal and a counter repeat signal. A read/write control signal is maintained for one cycle after the last valid access command to avoid bus turn-around problems. In the multiplexed mode, chip enable and output enable signals may be constantly activated, thereby simplifying associated printed circuit board design. Different ports of the synchronous memory system can be independently configured to operate in either the multiplexed or non-multiplexed mode.
    Type: Application
    Filed: September 27, 2007
    Publication date: April 2, 2009
    Applicant: Integrated Device Technology, Inc.
    Inventors: Tzong-Kwang (Henry) YEH, Jiann-Jeng (John) DUH, Casey SPRINGER
  • Patent number: 7443747
    Abstract: Capacitive coupling correction circuits are coupled between adjacent parallel dynamic (pre-charged) or static conductors. The capacitive coupling correction circuits effectively isolate a low voltage applied to a first conductor from a high pre-charged voltage stored on an adjacent second conductor (or vice versa). The adjacent parallel conductors can be bit lines of a memory cell. Each capacitive coupling correction circuit can include an inverter having an input terminal coupled to the first conductor, and an output terminal coupled to a first plate of a capacitor. A second plate of the capacitor is coupled to the second conductor. The capacitance of the capacitor is selected to be identical to a parasitic capacitance between the first and second conductors. As a result, there is a zero net voltage effect between the first and second conductors. The capacitive coupling correction circuits may be distributed along the length of the first and second conductors.
    Type: Grant
    Filed: November 23, 2004
    Date of Patent: October 28, 2008
    Assignee: Integrated Device Technology, Inc.
    Inventors: Chuen-Der Lien, Tzong-Kwang Henry Yeh