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).
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Patent number: 10959298Abstract: 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: GrantFiled: November 22, 2019Date of Patent: March 23, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Makalo Xie, Feifei Shen, Richard Tan, Alex Ruan
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Publication number: 20200092963Abstract: 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: ApplicationFiled: November 22, 2019Publication date: March 19, 2020Inventors: Makalo Xie, Feifei Shen, Richard Tan, Alex Ruan
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Patent number: 10524321Abstract: 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: GrantFiled: April 17, 2018Date of Patent: December 31, 2019Assignee: Texas Instruments IncorporatedInventors: Makalo Xie, FeiFei Shen, Richard Tan, Alex Ruan
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Patent number: 10293712Abstract: 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: GrantFiled: October 20, 2017Date of Patent: May 21, 2019Assignee: Ford Global Technologies, LLCInventor: Alex Ruan
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Publication number: 20180302966Abstract: 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: ApplicationFiled: April 17, 2018Publication date: October 18, 2018Inventors: Makalo Xie, FeiFei Shen, Richard Tan, Alex Ruan
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Patent number: 10052977Abstract: 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: GrantFiled: August 18, 2017Date of Patent: August 21, 2018Assignee: Ford Global Technologies, LLCInventor: Alex Ruan
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Publication number: 20180111514Abstract: 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: ApplicationFiled: October 20, 2017Publication date: April 26, 2018Inventor: Alex Ruan
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Patent number: 9949327Abstract: 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: GrantFiled: February 28, 2014Date of Patent: April 17, 2018Assignee: Texas Instruments IncorporatedInventors: Makalo Xie, Feifei Shen, Richard Tan, Alex Ruan
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Publication number: 20180056818Abstract: 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: ApplicationFiled: August 18, 2017Publication date: March 1, 2018Inventor: Alex Ruan
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Publication number: 20160360584Abstract: 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: ApplicationFiled: February 28, 2014Publication date: December 8, 2016Inventors: MAKALO XIE, FEIFEI SHEN, RICHARD TAN, ALEX RUAN
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Patent number: 7079768Abstract: 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: GrantFiled: March 29, 2001Date of Patent: July 18, 2006Assignee: Lucent Technologies Inc.Inventors: Alex Ruan, Christopher L. Rutledge
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Publication number: 20020039214Abstract: 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: ApplicationFiled: March 29, 2001Publication date: April 4, 2002Inventors: Alex Ruan, Christopher L. Rutledge