Patents by Inventor Yongchang Wang

Yongchang Wang 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: 9964261
    Abstract: A message board lighting fixture has semiconductor based lighting elements for illumination and an integrated electronic message board display for displaying content to occupants of a transit vehicle or other area. The lighting fixture may include a concave fixture frame having a reflective interior, with lighting elements positioned along the length of the frame to provide area illumination. The electronic display may be mounted on a projecting frame substantially centrally within the cavity of the concave fixture frame, and may be augmented with additional semiconductor based lighting elements for backlighting. A detachable lens cover may have a diffusive portion and a separate transparent region over the electronic display area.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: May 8, 2018
    Assignee: I/O Controls Corporation
    Inventors: Jeffrey Ying, Jerry Lin, Yongchang Wang
  • Publication number: 20170050560
    Abstract: A transit vehicle lighting system has a plurality of LED-based lighting fixtures for providing interior illumination. A control network comprises a plurality of slave nodes for controlling the LED-based lighting fixtures, and a master node for controlling the slave nodes. The master node may be connected to the slave nodes by a combined power/communication bus in a daisy chain fashion. The slave node may include a power regulator and a controller for providing a target current command to the power regulator, and may adjust the target current based upon temperature measurementsor a recorded age of the LEDs. An optical sensor may provide automatic dimming. A reduced number of LEDs may be used in an emergency mode. The lighting fixture may include a ceiling panel fixture and a riser panel attachable by way of a hinge mechanism.
    Type: Application
    Filed: November 9, 2016
    Publication date: February 23, 2017
    Inventors: Baixiong Kuang, Jerry Lin, Yongchang Wang, Chin Seong Khor
  • Patent number: 9562662
    Abstract: A vehicle headlight and control system for a bus or large vehicle includes a headlight fixture with a center or low beam light source and side illumination light source operated independently. The side illumination light source may be activated when the vehicle is turning, as detected by the vehicle speed and steering shaft turn angle, to provide supplemental illumination. Both right and left side illumination sources may be provided, and may comprise LED light elements. The system may also include an audible sound generator to alert pedestrians when the vehicle is turning.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: February 7, 2017
    Assignee: I/O Controls Corporation
    Inventors: Jerry Lin, Yongchang Wang, Ren-Cheng Chao, Chin-Tin Hsiao, Chih-Li Wang
  • Publication number: 20160185288
    Abstract: A transit vehicle lighting system has a plurality of LED-based lighting fixtures for providing interior illumination. A control network comprises a plurality of slave nodes for controlling the LED-based lighting fixtures, and a master node for controlling the slave nodes. The master node may be connected to the slave nodes by a combined power/communication bus in a daisy chain fashion. The slave node may include a power regulator and a controller for providing a target current command to the power regulator, and may adjust the target current based upon temperature measurements or a recorded age of the LEDs. An optical sensor may provide automatic dimming. A reduced number of LEDs may be used in an emergency mode. The lighting fixture may include a ceiling panel fixture and a riser panel attachable by way of a hinge mechanism.
    Type: Application
    Filed: July 10, 2015
    Publication date: June 30, 2016
    Applicant: I/O Controls Corporation
    Inventors: Baixiong Kuang, Jerry Lin, Yongchang Wang, Chin Seong Khor
  • Patent number: 9243759
    Abstract: An LED-based lighting unit for retrofitting a fluorescent light fixture in a transit vehicle has a concave frame or structure conforming to the shape of the fluorescent lighting fixture cavity, connector pins on either end of the frame for secure attachment to sockets of the fluorescent fixture, a plurality of LED modules for illuminating an area of a transit vehicle, a power adapter for receiving and converting an input power supply signal, and a diffusive lens cover. The frame may have rear fins or other features for facilitating dissipation of heat generated by the LEDs. A controller adjusts the intensity of the LEDs based on a reading from a temperature sensor and on a manual brightness setting. The change in light output may be accomplished by reducing a duty cycle of a pulse width modulated (PWM) waveform supplying the LEDs.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: January 26, 2016
    Assignee: I/O Controls Corporation
    Inventors: Jerry Lin, Yongchang Wang
  • Publication number: 20150338045
    Abstract: A vehicle headlight and control system for a bus or large vehicle includes a headlight fixture with a center or low beam light source and side illumination light source operated independently. The side illumination light source may be activated when the vehicle is turning, as detected by the vehicle speed and steering shaft turn angle, to provide supplemental illumination. Both right and left side illumination sources may be provided, and may comprise LED light elements. The system may also include an audible sound generator to alert pedestrians when the vehicle is turning.
    Type: Application
    Filed: March 30, 2015
    Publication date: November 26, 2015
    Applicant: I/O Controls Corporation
    Inventors: Jerry Lin, Yongchang Wang, Ren-Cheng Chao, Chin-Tin Hsiao, Chih-Li Wang
  • Patent number: 9096168
    Abstract: A transit vehicle lighting system has a plurality of LED-based lighting fixtures for providing interior illumination. A control network comprises a plurality of slave nodes for controlling the LED-based lighting fixtures, and a master node for controlling the slave nodes. The master node may be connected to the slave nodes by a combined power/communication bus in a daisy chain fashion. The slave node may include a power regulator and a controller for providing a target current command to the power regulator, and may adjust the target current based upon temperature measurements or a recorded age of the LEDs. An optical sensor may provide automatic dimming. A reduced number of LEDs may be used in an emergency mode. The lighting fixture may include a ceiling panel fixture and a riser panel attachable by way of a hinge mechanism.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: August 4, 2015
    Assignee: I/O Controls Corporation
    Inventors: Baixiong Kuang, Jerry Lin, Yongchang Wang, Chin Seong Khor
  • Publication number: 20150207286
    Abstract: A phone mount system includes a slot installer that installs into a slot of a CD player or cassette player. A controller and circuitry assembly includes a plurality of connector plugs. Each connector plug in the plurality of connector plugs has a different charger interface than other connector plugs in the plurality of connector plugs.
    Type: Application
    Filed: January 22, 2014
    Publication date: July 23, 2015
    Inventors: Liang Chen, Yongchang Wang
  • Patent number: 9079479
    Abstract: An automated vehicle sunshade system includes a roller on which is mounted shield material. A motor opens the shield material so as to block sunlight entering a vehicle through a window.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: July 14, 2015
    Inventors: Liang Chen, Yongchang Wang
  • Publication number: 20150158421
    Abstract: A transit vehicle lighting system has a plurality of LED-based lighting fixtures for providing interior illumination. A control network comprises a plurality of slave nodes for controlling the LED-based lighting fixtures, and a master node for controlling the slave nodes. The master node may be connected to the slave nodes by a combined power/communication bus in a daisy chain fashion. The slave node may include a power regulator and a controller for providing a target current command to the power regulator, and may adjust the target current based upon temperature measurementsor a recorded age of the LEDs. An optical sensor may provide automatic dimming. A reduced number of LEDs may be used in an emergency mode. The lighting fixture may include a ceiling panel fixture and a riser panel attachable by way of a hinge mechanism.
    Type: Application
    Filed: June 17, 2014
    Publication date: June 11, 2015
    Inventors: Baixiong Kuang, Jerry Lin, Yongchang Wang, Chin Seong Khor
  • Publication number: 20150107783
    Abstract: An automated vehicle sunshade system includes a roller on which is mounted shield material. A motor opens the shield material so as to block sunlight entering a vehicle through a window.
    Type: Application
    Filed: October 21, 2013
    Publication date: April 23, 2015
    Inventors: Liang Chen, Yongchang Wang
  • Patent number: 8992056
    Abstract: A vehicle headlight and control system for a bus or large vehicle includes a headlight fixture with a center or low beam light source and side illumination light source operated independently. The side illumination light source may be activated when the vehicle is turning, as detected by the vehicle speed and steering shaft turn angle, to provide supplemental illumination. Both right and left side illumination sources may be provided, and may comprise LED light elements. The system may also include an audible sound generator to alert pedestrians when the vehicle is turning.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: March 31, 2015
    Assignee: I/O Controls Corporation
    Inventors: Jerry Lin, Yongchang Wang, Ren-Cheng Chao, Chin-Tin Hsiao, Chih-Li Wang
  • Patent number: 8947677
    Abstract: A computer-implemented process, system, and computer-readable storage medium having stored thereon, program code and instructions for 3-D triangulation-based image acquisition of a contoured surface/object-of-interest under observation by at least one camera, by projecting onto the surface-of-interest a multi-frequency pattern comprising a plurality of pixels representing at least a first and second superimposed sinusoid projected simultaneously, each of the sinusoids represented by the pixels having a unique temporal frequency and each of the pixels projected to satisfy I n p = A p + ? k = 1 K ? B k p ? cos ? ( 2 ? ? ? ? f k ? y p + 2 ? ? ? ? kn N ) Eq . ? ( 1.1 ) where Inp is the intensity of a pixel in the projector for nth projected image in a particular instant in time; K is an integer representing the number of component sinusoids (e.g.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: February 3, 2015
    Assignee: University of Kentucky Research Foundation
    Inventors: Kai Liu, Yongchang Wang, Daniel L. Lau, Laurence G. Hassebrook
  • Publication number: 20140267975
    Abstract: A message board lighting fixture has semiconductor based lighting elements for illumination and an integrated electronic message board display for displaying content to occupants of a transit vehicle or other area. The lighting fixture may include a concave fixture frame having a reflective interior, with lighting elements positioned along the length of the frame to provide area illumination. The electronic display may be mounted on a projecting frame substantially centrally within the cavity of the concave fixture frame, and may be augmented with additional semiconductor based lighting elements for backlighting. A detachable lens cover may have a diffusive portion and a separate transparent region over the electronic display area.
    Type: Application
    Filed: March 12, 2014
    Publication date: September 18, 2014
    Inventors: Jeffrey Ying, Jerry Lin, Yongchang Wang
  • Patent number: 8786191
    Abstract: A transit vehicle lighting system has a plurality of LED-based lighting fixtures for providing interior illumination. A control network comprises a plurality of slave nodes for controlling the LED-based lighting fixtures, and a master node for controlling the slave nodes. The master node may be connected to the slave nodes by a combined power/communication bus in a daisy chain fashion. The slave node may include a power regulator and a controller for providing a target current command to the power regulator, and may adjust the target current based upon temperature measurements or a recorded age of the LEDs. An optical sensor may provide automatic dimming. A reduced number of LEDs may be used in an emergency mode. The lighting fixture may include a ceiling panel fixture and a riser panel attachable by way of a hinge mechanism.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: July 22, 2014
    Assignee: I/O Controls Corporation
    Inventors: Baixiong Kuang, Jerry Lin, Yongchang Wang, Chin Seong Khor
  • Publication number: 20140112014
    Abstract: An LED-based lighting unit for retrofitting a fluorescent light fixture in a transit vehicle has a concave frame or structure conforming to the shape of the fluorescent lighting fixture cavity, connector pins on either end of the frame for secure attachment to sockets of the fluorescent fixture, a plurality of LED modules for illuminating an area of a transit vehicle, a power adapter for receiving and converting an input power supply signal, and a diffusive lens cover. The frame may have rear fins or other features for facilitating dissipation of heat generated by the LEDs. A controller adjusts the intensity of the LEDs based on a reading from a temperature sensor and on a manual brightness setting. The change in light output may be accomplished by reducing a duty cycle of a pulse width modulated (PWM) waveform supplying the LEDs.
    Type: Application
    Filed: October 22, 2012
    Publication date: April 24, 2014
    Inventors: Jerry Lin, Yongchang Wang
  • Publication number: 20140055030
    Abstract: A transit vehicle lighting system has a plurality of LED-based lighting fixtures for providing interior illumination. A control network comprises a plurality of slave nodes for controlling the LED-based lighting fixtures, and a master node for controlling the slave nodes. The master node may be connected to the slave nodes by a combined power/communication bus in a daisy chain fashion. The slave node may include a power regulator and a controller for providing a target current command to the power regulator, and may adjust the target current based upon temperature measurements or a recorded age of the LEDs. An optical sensor may provide automatic dimming. A reduced number of LEDs may be used in an emergency mode. The lighting fixture may include a ceiling panel fixture and a riser panel attachable by way of a hinge mechanism.
    Type: Application
    Filed: February 14, 2013
    Publication date: February 27, 2014
    Applicant: I/O Controls Corporation
    Inventors: Baixiong Kuang, Jerry Lin, Yongchang Wang, Chin Seong Khor
  • Publication number: 20130264942
    Abstract: A transit vehicle lighting system has a plurality of LED-based lighting fixtures for providing interior illumination. A control network comprises a plurality of slave nodes for controlling the LED-based lighting fixtures, and a master node for controlling the slave nodes. The master node may be connected to the slave nodes by a combined power/communication bus in a daisy chain fashion. The slave node may include a power regulator and a controller for providing a target current command to the power regulator, and may adjust the target current based upon temperature measurements or a recorded age of the LEDs. An optical sensor may provide automatic dimming. A reduced number of LEDs may be used in an emergency mode. The lighting fixture may include a ceiling panel fixture and a riser panel attachable by way of a hinge mechanism.
    Type: Application
    Filed: September 27, 2012
    Publication date: October 10, 2013
    Applicant: I/O Controls Corporation
    Inventors: Baixiong Kuang, Jerry Lin, Yongchang Wang, Chin Seong Khor
  • Publication number: 20130201704
    Abstract: A vehicle headlight and control system for a bus or large vehicle includes a headlight fixture with a center or low beam light source and side illumination light source operated independently. The side illumination light source may be activated when the vehicle is turning, as detected by the vehicle speed and steering shaft turn angle, to provide supplemental illumination. Both right and left side illumination sources may be provided, and may comprise LED light elements. The system may also include an audible sound generator to alert pedestrians when the vehicle is turning.
    Type: Application
    Filed: February 3, 2012
    Publication date: August 8, 2013
    Inventors: Jerry Lin, Yongchang Wang, Ren-Cheng Chao, Chin-Tin Hsiao, Chih-Li Wang
  • Patent number: 8400061
    Abstract: A transit vehicle lighting system has a plurality of LED-based lighting fixtures for providing interior illumination. A control network comprises a plurality of slave nodes for controlling the LED-based lighting fixtures, and a master node for controlling the slave nodes. The master node may be connected to the slave nodes by a combined power/communication bus in a daisy chain fashion. The slave node may include a power regulator and a controller for providing a target current command to the power regulator, and may adjust the target current based upon temperature measurements or a recorded age of the LEDs. An optical sensor may provide automatic dimming. A reduced number of LEDs may be used in an emergency mode. The lighting fixture may include a ceiling panel fixture and a riser panel attachable by way of a hinge mechanism.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: March 19, 2013
    Assignee: I/O Controls Corporation
    Inventors: Baixiong Kuang, Jerry Lin, Yongchang Wang, Chin Seong Khor