Patents by Inventor Alex Ruan

Alex Ruan 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: 10959298
    Abstract: One example includes a light-emitting diode (LED) system. The LED system includes an LED array comprising a plurality of LEDs that are each activated via an LED current provided therethrough to provide illumination. The system also includes an LED controller configured to sequentially activate the plurality of LEDs via at least one LED driver system configured to selectively provide the LED current through each sequential one of the plurality of LEDs in an activated state in response to an activation signal. The at least one LED driver system includes a voltage clamp configured to maintain a substantial constant amplitude difference of a driver voltage associated with the LED current from the activated state to a deactivated state.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: March 23, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Makalo Xie, Feifei Shen, Richard Tan, Alex Ruan
  • Publication number: 20200092963
    Abstract: One example includes a light-emitting diode (LED) system. The LED system includes an LED array comprising a plurality of LEDs that are each activated via an LED current provided therethrough to provide illumination. The system also includes an LED controller configured to sequentially activate the plurality of LEDs via at least one LED driver system configured to selectively provide the LED current through each sequential one of the plurality of LEDs in an activated state in response to an activation signal. The at least one LED driver system includes a voltage clamp configured to maintain a substantial constant amplitude difference of a driver voltage associated with the LED current from the activated state to a deactivated state.
    Type: Application
    Filed: November 22, 2019
    Publication date: March 19, 2020
    Inventors: Makalo Xie, Feifei Shen, Richard Tan, Alex Ruan
  • Patent number: 10524321
    Abstract: One example includes a light-emitting diode (LED) system. The LED system includes an LED array comprising a plurality of LEDs that are each activated via an LED current provided therethrough to provide illumination. The system also includes an LED controller configured to sequentially activate the plurality of LEDs via at least one LED driver system configured to selectively provide the LED current through each sequential one of the plurality of LEDs in an activated state in response to an activation signal. The at least one LED driver system includes a voltage clamp configured to maintain a substantial constant amplitude difference of a driver voltage associated with the LED current from the activated state to a deactivated state.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: December 31, 2019
    Assignee: Texas Instruments Incorporated
    Inventors: Makalo Xie, FeiFei Shen, Richard Tan, Alex Ruan
  • Patent number: 10293712
    Abstract: A recline adjustment assembly for a rear seat in a vehicle comprises a latch device disposed on a seatback of the seat; and a strike pivotally connected to a vehicle body behind the seatback and locked in the latch device at a use position. The latch device moves along the strike to adjust a reclining angle of the seatback as the strike pivots by a driving device.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: May 21, 2019
    Assignee: Ford Global Technologies, LLC
    Inventor: Alex Ruan
  • Publication number: 20180302966
    Abstract: One example includes a light-emitting diode (LED) system. The LED system includes an LED array comprising a plurality of LEDs that are each activated via an LED current provided therethrough to provide illumination. The system also includes an LED controller configured to sequentially activate the plurality of LEDs via at least one LED driver system configured to selectively provide the LED current through each sequential one of the plurality of LEDs in an activated state in response to an activation signal. The at least one LED driver system includes a voltage clamp configured to maintain a substantial constant amplitude difference of a driver voltage associated with the LED current from the activated state to a deactivated state.
    Type: Application
    Filed: April 17, 2018
    Publication date: October 18, 2018
    Inventors: Makalo Xie, FeiFei Shen, Richard Tan, Alex Ruan
  • Patent number: 10052977
    Abstract: A recline assembly used in a vehicle seat is provided. The recline mechanism comprises a recline mechanism and a guide bracket disposed on a vehicle body; a latch mechanism disposed on a seatback of the vehicle seat; and a striker coupled to the recline mechanism. One end of the strike is connected to the recline mechanism and another end of the strike passes through a guide slot of the guide bracket and is selectively locked to the latch mechanism.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: August 21, 2018
    Assignee: Ford Global Technologies, LLC
    Inventor: Alex Ruan
  • Publication number: 20180111514
    Abstract: A recline adjustment assembly for a rear seat in a vehicle comprises a latch device disposed on a seatback of the seat; and a strike pivotally connected to a vehicle body behind the seatback and locked in the latch device at a use position. The latch device moves along the strike to adjust a reclining angle of the seatback as the strike pivots by a driving device.
    Type: Application
    Filed: October 20, 2017
    Publication date: April 26, 2018
    Inventor: Alex Ruan
  • Patent number: 9949327
    Abstract: One example includes a light-emitting diode (LED) system. The LED system includes an LED array comprising a plurality of LEDs that are each activated via an LED current provided therethrough to provide illumination. The system also includes an LED controller configured to sequentially activate the plurality of LEDs via at least one LED driver system configured to selectively provide the LED current through each sequential one of the plurality of LEDs in an activated state in response to an activation signal. The at least one LED driver system includes a voltage clamp configured to maintain a substantial constant amplitude difference of a driver voltage associated with the LED current from the activated state to a deactivated state.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: April 17, 2018
    Assignee: Texas Instruments Incorporated
    Inventors: Makalo Xie, Feifei Shen, Richard Tan, Alex Ruan
  • Publication number: 20180056818
    Abstract: A recline assembly used in a vehicle seat is provided. The recline mechanism comprises a recline mechanism and a guide bracket disposed on a vehicle body; a latch mechanism disposed on a seatback of the vehicle seat; and a striker coupled to the recline mechanism. One end of the strike is connected to the recline mechanism and another end of the strike passes through a guide slot of the guide bracket and is selectively locked to the latch mechanism.
    Type: Application
    Filed: August 18, 2017
    Publication date: March 1, 2018
    Inventor: Alex Ruan
  • Publication number: 20160360584
    Abstract: One example includes a light-emitting diode (LED) system. The LED system includes an LED array comprising a plurality of LEDs that are each activated via an LED current provided therethrough to provide illumination. The system also includes an LED controller configured to sequentially activate the plurality of LEDs via at least one LED driver system configured to selectively provide the LED current through each sequential one of the plurality of LEDs in an activated state in response to an activation signal. The at least one LED driver system includes a voltage clamp configured to maintain a substantial constant amplitude difference of a driver voltage associated with the LED current from the activated state to a deactivated state.
    Type: Application
    Filed: February 28, 2014
    Publication date: December 8, 2016
    Inventors: MAKALO XIE, FEIFEI SHEN, RICHARD TAN, ALEX RUAN
  • Patent number: 7079768
    Abstract: A rapid and reconfigurable deployment of services in a CATV system is enabled by the use of dynamic passive optical networks (DPONs) in accordance with the present invention. By delivering a number of wavelengths to the PON and using various dynamically reconfigurable groupings of the wavelengths to support differing subsets of users, the maximum capabilities of a static PON architecture are greatly exceeded. In accordance with one embodiment of the invention, the dynamic PON device accepts M wavelengths on a single optical fiber. The output of the dynamic PON device includes N output ports. Each of the M signals can be delivered to none, some or all of the N output ports. At its input, the DPON includes an optical amplifier for amplifying the multi-wavelength input signal to a desired power level prior to splitting. A 1:N channel power splitter couples to the output of the optical amplifier. Each of the power splitter outputs contains all M wavelength channels of the optical fiber.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: July 18, 2006
    Assignee: Lucent Technologies Inc.
    Inventors: Alex Ruan, Christopher L. Rutledge
  • Publication number: 20020039214
    Abstract: A rapid and reconfigurable deployment of services in a CATV system is enabled by the use of dynamic passive optical networks (DPONs) in accordance with the present invention. By delivering a number of wavelengths to the PON and using various dynamically reconfigurable groupings of the wavelengths to support differing subsets of users, the maximum capabilities of a static PON architecture are greatly exceeded. In accordance with one embodiment of the invention, the dynamic PON device accepts M wavelengths on a single optical fiber. The output of the dynamic PON device includes N output ports. Each of the M signals can be delivered to none, some or all of the N output ports. At its input, the DPON includes an optical amplifier for amplifying the multi-wavelength input signal to a desired power level prior to splitting. A 1:N channel power splitter couples to the output of the optical amplifier. Each of the power splitter outputs contains all M wavelength channels of the optical fiber.
    Type: Application
    Filed: March 29, 2001
    Publication date: April 4, 2002
    Inventors: Alex Ruan, Christopher L. Rutledge