Patents by Inventor Kai Qi TIAN

Kai Qi TIAN 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).

  • Optical structure, lighting unit and a method of manufacture
    Patent number: 10386051
    Abstract: An optical structure for processing the light output by a lighting unit, in which an antenna (36) is formed within or over an region (34) of the optical layer (23) of the structure, wherein the region (34) is away from the optical beam processing parts (21) a of the optical layer (23).
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: August 20, 2019
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Min Chen, Lihua Lin, Xiao Sun, Kai Qi Tian
  • Power supply system and method and circuit using the same
    Patent number: 9974123
    Abstract: A power supply system uses a DC-DC power converter (28) for supplying an output load. A compensation circuit (40) is connected between the input to the DC-DC converter and the output of the DC-DC converter and it provides a compensating path in response to a voltage drop at the output of the DC-DC converter caused by a surge in the output load. The power supply system further comprises a low drop out regulator (30) as the output load, which low drop out regulator (30) having an input connected to the DC-DC power converter and the compensation circuit, and an output connected to an output terminal (C) for connection to a further output load. This enables the DC-DC power converter to have a low current capability, because a large current demand can be met by the DC supply to the DC-DC converter.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: May 15, 2018
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: Shan Wang, Kai Qi Tian, Gang Wang
  • POWER SUPPLY SYSTEM AND METHOD AND CIRCUIT USING THE SAME
    Publication number: 20170164436
    Abstract: A power supply system uses a DC-DC power converter (28) for supplying an output load. A compensation circuit (40) is connected between the input to the DC-DC converter and the output of the DC-DC converter and it provides a compensating path in response to a voltage drop at the output of the DC-DC converter caused by a surge in the output load. The power supply system further comprises a low drop out regulator (30) as the output load, which low drop out regulator (30) having an input connected to the DC-DC power converter and the compensation circuit, and an output connected to an output terminal (C) for connection to a further output load. This enables the DC-DC power converter to have a low current capability, because a large current demand can be met by the DC supply to the DC-DC converter.
    Type: Application
    Filed: June 26, 2015
    Publication date: June 8, 2017
    Inventors: Shan WANG, Kai Qi TIAN, Gang WANG
  • AN OPTICAL STRUCTURE, LIGHTING UNIT AND A METHOD OF MANUFACTURE
    Publication number: 20160377272
    Abstract: An optical structure for processing the light output by a lighting unit, in 6 which an antenna (36) is formed within or over an region (34) of the optical layer (23) of the structure, wherein the region (34) is away from the optical beam processing parts (21)a of the optical layer (23).
    Type: Application
    Filed: March 11, 2015
    Publication date: December 29, 2016
    Inventors: Min CHEN, Lihua LIN, Xiao SUN, Kai Qi TIAN