Patents Assigned to Nuvoton Technology Corporation
  • Patent number: 11662372
    Abstract: A method for measuring an input capacitance of a pin of an electronic device includes, using a tester including Pin Electronics (PE), obtaining a first capacitance measurement while the pin is disconnected from the PE, and a second capacitance measurement while the pin is connected to the PE. The input capacitance of the pin is calculated from the first and second capacitance measurements.
    Type: Grant
    Filed: August 25, 2021
    Date of Patent: May 30, 2023
    Assignee: NUVOTON TECHNOLOGY CORPORATION
    Inventor: Alain Bismuth
  • Patent number: 11663101
    Abstract: A semiconductor device includes a debug port, a first access port, a second access port, a first processing unit, a second processing unit, and an embedded emulator unit. The first access port is coupled to the debug port. The second access port is coupled to the debug port. The first processing unit is coupled to the first access port. The second processing unit is coupled to the second access port. The embedded emulator unit is coupled to the debug port, the first processing unit and the second processing unit. The first processing unit generates a debug instruction to access the embedded emulator unit, so that the embedded emulator unit generates a debug signal. The debug signal is output to the second processing unit through the debug port and the second access port, so as to perform a debug operation on the second processing unit.
    Type: Grant
    Filed: November 18, 2021
    Date of Patent: May 30, 2023
    Assignee: NUVOTON TECHNOLOGY CORPORATION
    Inventor: Zong-Min Lin
  • Patent number: 11650945
    Abstract: A cascade extension device and a cascade system having the cascade extension device are provided. The cascade extension device includes a control module, a buffer module, a storage module, and a selecting output module. The cascade system includes a processor and a plurality of extension devices. The processor may simultaneously control the plurality of extension devices through judging the data packet received as a write command, a read command, or a bypass command by a plurality of extension devices.
    Type: Grant
    Filed: April 15, 2021
    Date of Patent: May 16, 2023
    Assignee: NUVOTON TECHNOLOGY CORPORATION
    Inventors: Ming-Hung Wu, Hao-Yang Chang, Fong-Jhu Wu, Ciao-Ling Lu
  • Patent number: 11652451
    Abstract: A power amplifier device includes: a first power supply terminal for inputting a first power supply voltage; a first transistor for power amplification that (i) includes a first gate to which a bias voltage is applied, and (ii) is supplied with power from the first power supply terminal; a second power supply terminal for inputting a second power supply voltage lower than the first power supply voltage; a second transistor for monitoring that (i) includes a second gate to which the bias voltage is applied, (ii) is supplied with power from the first power supply terminal or the second power supply terminal, and (iii) imitates an operation of the first transistor; and a bias circuit that is supplied with power from the second power supply terminal and generates and adjusts the bias voltage according to a drain current or a source current of the second transistor.
    Type: Grant
    Filed: August 22, 2022
    Date of Patent: May 16, 2023
    Assignee: NUVOTON TECHNOLOGY CORPORATION JAPAN
    Inventors: Takashi Saji, Kaname Motoyoshi, Shingo Matsuda
  • Patent number: 11646230
    Abstract: A chip singulation method includes, in stated order: forming a surface supporting layer on an upper surface of a wafer; thinning the wafer from the undersurface to reduce the thickness to at most 30 ?m; removing the surface supporting layer from the upper surface; forming a first metal layer and subsequently a second metal layer on the undersurface of the wafer; applying a dicing tape onto an undersurface of the second metal layer; applying, onto the upper surface of the wafer, a process of increasing hydrophilicity of a surface of the wafer; forming a water-soluble protective layer on the surface of the wafer; cutting the wafer, the first metal layer, and the second metal layer by irradiating a predetermined region of the upper surface of the wafer with a laser beam; and removing the water-soluble protective layer from the surface of the wafer using wash water.
    Type: Grant
    Filed: September 22, 2022
    Date of Patent: May 9, 2023
    Assignee: NUVOTON TECHNOLOGY CORPORATION JAPAN
    Inventors: Takeshi Harada, Hiroaki Ohta, Yoshihiro Matsushima
  • Patent number: 11636907
    Abstract: An Integrated Circuit (IC) includes a non-volatile memory (NVM) and secure power-up circuitry. The NVM is configured to store an operational state of the IC. The secure power-up circuitry is configured to (i) during a power-up sequence of the IC, perform a first readout of the operational state from the NVM while a supply voltage of the IC is within a first voltage range, (ii) if the operational state read from the NVM in the first readout is a state that permits access to a sensitive resource of the IC, verify that the supply voltage is within a second voltage range, more stringent than the first voltage range, and then perform a second readout of the operational state from the NVM, and (iii) initiate a responsive action in response to a discrepancy between the operational states read from the NVM in the first readout and in the second readout.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: April 25, 2023
    Assignee: NUVOTON TECHNOLOGY CORPORATION
    Inventors: Ziv Hershman, Yoel Hayon, Moshe Alon
  • Patent number: 11637176
    Abstract: Provided is a first vertical field effect transistor in which first source regions and first connection portions via which a first body region is connected to a first source electrode are disposed alternately and cyclically in a first direction in which first trenches extend. In a second direction orthogonal to the first direction, Lxm?Lxr?0.20 ?m holds true where Lxm denotes a distance between adjacent first trenches and Lxr denotes the inner width of a first trench. The lengths of the first connection portions are in a convergence region in which the on-resistance of the vertical field effect transistor at the time when a voltage having a specification value is applied to first gate conductors to supply current having a specification value does not decrease noticeably even when the lengths of the first connection portions are made much shorter.
    Type: Grant
    Filed: July 7, 2022
    Date of Patent: April 25, 2023
    Assignee: NUVOTON TECHNOLOGY CORPORATION JAPAN
    Inventors: Hironao Nakamura, Ryosuke Okawa, Tsubasa Inoue, Akira Kimura, Eiji Yasuda
  • Patent number: 11629827
    Abstract: An illumination device includes a first light source that emits first light having a first peak wavelength which is highest in intensity in a wavelength range from near-ultraviolet to green in an emission spectrum; a second light source that emits second light having a second peak wavelength which is highest in intensity in a wavelength range from near-ultraviolet to green in an emission spectrum, the second light illuminating a position identical to a position illuminated by the first light; and a detection device that detects whether an object is present at a given position, wherein the second peak wavelength is shorter than the first peak wavelength, and a luminous flux of the first light is decreased and a luminous flux of the second light is increased when the detection device detects that the object is present at the predetermined position.
    Type: Grant
    Filed: June 21, 2022
    Date of Patent: April 18, 2023
    Assignee: NUVOTON TECHNOLOGY CORPORATION JAPAN
    Inventors: Atsuhiro Hori, Kenji Nakashima, Yasutoshi Kawaguchi, Hidemi Takeishi, Masanori Michimori, Shigeo Hayashi
  • Patent number: 11630787
    Abstract: A bus system is provided. A memory device is electrically connected to a master device via a serial peripheral interface (SPI) bus. A plurality of slave devices are electrically connected to the master device via an enhanced SPI (eSPI) bus. Each of the slave devices has an alert handshake pin. The alert handshake pins of the slave devices are electrically connected together via an alert-handshake control line. The first slave device is electrically connected to the memory device via the SPI bus. After obtaining a program code from the memory device, the first slave device verifies the program code using a security code and controls the alert-handshake control line to unlock all the slave devices except for the first slave device via the alert handshake pin in response to the program code being verified. The unlocked slave devices communicate with the master device via the eSPI bus.
    Type: Grant
    Filed: December 15, 2021
    Date of Patent: April 18, 2023
    Assignee: NUVOTON TECHNOLOGY CORPORATION
    Inventors: Chih-Hung Huang, Kang-Fu Chiu, Hao-Yang Chang
  • Patent number: 11626399
    Abstract: Provided is a semiconductor device which is a facedown mounting, chip-size-package-type semiconductor device and includes: a transistor element including a first electrode, a second electrode, and a control electrode which controls a conduction state between the first electrode and the second electrode; a plurality of first resistor elements each including a first electrode and a second electrode, the first electrodes of the first resistor elements being electrically connected to the second electrode of the transistor element; one or more external resistance terminals to which the second electrodes of the plurality of first resistor elements are physically connected; a first external terminal electrically connected to the first electrode of the transistor element; and an external control terminal electrically connected to the control electrode.
    Type: Grant
    Filed: February 1, 2022
    Date of Patent: April 11, 2023
    Assignee: NUVOTON TECHNOLOGY CORPORATION JAPAN
    Inventors: Kazuma Yoshida, Ryosuke Okawa, Tsubasa Inoue
  • Patent number: 11622194
    Abstract: A recurrent neural network is employed in a loudspeaker system to compensate the distortion of the system based upon a source signal (content) and the sensing output of a sensing circuit (context). A frequency domain transform is selected to provide mapping between the source signal and a recorded signal; and enable reconstruction of desirable playback. Various sensing-related features and source-related features are derived to serve as the auxiliary information. A desirable content is therefore generated based upon the original content and the context.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: April 4, 2023
    Assignee: Nuvoton Technology Corporation
    Inventors: Powen Ru, Jin Hee Kim, Nathan Wong, Pratul Saini
  • Patent number: 11619365
    Abstract: A light source unit includes: a first light emission point from which a first beam is emitted; a second light emission point from which a second beam is emitted and which is disposed apart from the first light emission point in a second direction perpendicular to a first direction; a deflection element that deflects the first and/or second beam; and a first condensing optical element that focuses, on a light collection surface, the first and second beams. The first beam at the first light emission point overlaps the second beam at the second light emission point in a third direction, and on the light collection surface, the first and second beams overlap each other in the second direction and are separate from each other in the third direction.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: April 4, 2023
    Assignee: NUVOTON TECHNOLOGY CORPORATION JAPAN
    Inventors: Masahiko Nishimoto, Kazuhiko Yamanaka, Masayuki Hata
  • Patent number: 11615049
    Abstract: A programmable serial input-output controller is provided. A timer circuit performs a timing operation. An input pin is configured to receive an input signal from an external circuit. An output pin is configured to provide an output signal to the external circuit. In an output mode, the sequence controller provides an initial level to the output pin and controls the timer circuit to perform the timing operation. In response to a duration of the timer circuit performing the timing operation reaching first transmission time, the sequence controller inverts the level of the output pin and controls the timer circuit to re-perform the timing operation. In response to the duration of the timer circuit re-performing the timing operation reaching second transmission time, the sequence controller inverts the level of the output pin.
    Type: Grant
    Filed: December 28, 2021
    Date of Patent: March 28, 2023
    Assignee: NUVOTON TECHNOLOGY CORPORATION
    Inventor: Cheng-Chih Wang
  • Patent number: 11616437
    Abstract: A constant power control circuit driving an external device receiving an input voltage and generating an output voltage is provided. A first conversion circuit converts the voltage difference between the input voltage and the output voltage to generate a charge current. An energy storage circuit is charged during a charging period by the charge current to provide a stored voltage. The charging period is terminated in response to the stored voltage reaching a predetermined voltage. A control circuit adjusts a control signal according to a length of the charging period. A second conversion circuit generates a counting voltage according to the control signal. The counting voltage is inversely proportional to the voltage difference. A third conversion circuit converts the counting voltage into a limitation current. A driving circuit compares the setting current and the limitation current to generate a driving signal and send it to the external device.
    Type: Grant
    Filed: February 11, 2021
    Date of Patent: March 28, 2023
    Assignee: NUVOTON TECHNOLOGY CORPORATION
    Inventor: Cheng-Tao Li
  • Patent number: 11604226
    Abstract: A voltage detection circuit includes a first terminal for connecting to one end of a first voltage detection line through a first resistor, the first voltage detection line having another end connected to a cathode or an anode of a first individual battery; a second terminal for connecting to the one end of the first voltage detection line without the first resistor; a first current generating circuit connected to the first terminal; and a voltage detector which detects a voltage of the first terminal and a voltage of the second terminal. The voltage detector includes at least one first AD converter connected to the first terminal, and at least one second AD converter connected to the second terminal.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: March 14, 2023
    Assignee: NUVOTON TECHNOLOGY CORPORATION JAPAN
    Inventors: Fumihito Inukai, Gorou Mori
  • Patent number: 11601268
    Abstract: A device including a network interface, a memory and a processor. The network interface is configured to communicate with a verifier over a communication network. The memory is configured to store multiple layers of mutable code, the layers identifiable by respective measurements. The processor is configured to generate, for a given boot cycle, a nonce associated uniquely with the given boot cycle, to receive a challenge from the verifier for attestation of a given layer of the mutable code, to calculate an attestation key based on (i) a Unique Device Secret (UDS) stored securely in the device, (ii) a measurement of the given layer taken by another layer, and (iii) the nonce generated for the given boot cycle, to calculate a response for the challenge, by signing the challenge using the attestation key, and to send the response to the verifier for verification of the given layer.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: March 7, 2023
    Assignee: NUVOTON TECHNOLOGY CORPORATION
    Inventors: Ziv Hershman, Dan Morav
  • Patent number: 11601120
    Abstract: An oscillator circuit includes a plurality of inverters connected in a cascade, at least first and second feedback taps, and alternation circuitry. The at least first and second feedback taps are configured to feed-back at least respective first and second output signals taken from at least respective first and second points in the cascade. The alternation circuitry is configured to derive an input signal from at least the first and second output signals by alternating between at least the first and second feedback taps, and to apply the input signal to an input of the cascade.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: March 7, 2023
    Assignee: NUVOTON TECHNOLOGY CORPORATION
    Inventor: Moshe Alon
  • Patent number: 11599132
    Abstract: An amplifier circuit includes an amplifier and an output transistor. The amplifier is coupled to an output node of the output transistor for providing an output voltage to a load device. The amplifier circuit also includes a slew-rate control circuit coupled to a gate node of the output transistor and configured to control voltage rise of the gate node of the output transistor during power-up to reduce output voltage overshoot.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: March 7, 2023
    Assignee: Nuvoton Technology Corporation
    Inventors: Chang-Xian Wu, Bal S. Sandhu
  • Patent number: 11601050
    Abstract: A voltage regulation system is provided. In the voltage regulation system, a frequency of a clock signal is adjusted and a pulse generator is controlled to output a pulse signal to a switch power stage circuit, to enable the switch power stage circuit to adjust an output voltage and output the adjusted output voltage to the load element. Through the aforementioned configuration, the switch power stage circuit adjusts the output voltage according to the situation of the load element, thus decreasing the power loss of the switch power stage circuit.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: March 7, 2023
    Assignee: NUVOTON TECHNOLOGY CORPORATION
    Inventors: Chung-Ming Hsieh, Wei-Chan Hsu
  • Patent number: 11585860
    Abstract: A semiconductor device that is of a face-down mounted chip-size package type, discharges electric charges stored in an electric storage device (battery), and has a power loss area ratio of at least 0.4 (W/mm2) obtained by dividing a power loss (W) in the semiconductor device at time of the discharge by an area (mm2) of the semiconductor device, the semiconductor device comprising: a field-effect transistor of a horizontal type and a resistor that are connected in series in stated order between an inflow terminal and an outflow terminal; and a control circuit that causes a discharge current to be constant without depending on an applied voltage between the inflow terminal and the outflow terminal. A difference between a maximum temperature of a field-effect transistor portion and a temperature of a resistor portion is within five degrees Celsius in a discharge period.
    Type: Grant
    Filed: May 12, 2021
    Date of Patent: February 21, 2023
    Assignee: NUVOTON TECHNOLOGY CORPORATION JAPAN
    Inventors: Kensuke Takahashi, Toshifumi Ishida