Patents by Inventor Haoji Wu

Haoji Wu 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: 11965919
    Abstract: A phase frequency detector-based high-precision feedback frequency measurement apparatus and method: a Field Programmable Gate Array (FGPA) roughly measures a frequency fx of a measured time-frequency pulse by an equal-precision frequency measurement method; a Direct Digital Synthesizer (DDS) automatically synthesizes a frequency fx? according to the fx roughly measured by the FPGA; the fx and the fx? are sent to a phase frequency detector for performing phase frequency detection and then sent to the FPGA after passing through a charge pump, a low-pass filter circuit, and an (Analogue-to-Digital) A/D converter; the FPGA processes a frequency difference obtained by the phase frequency detector and then transmits the processed frequency difference to the DDS to form a negative feedback frequency measurement system so that the DDS continuously adjusts the fx? according to a frequency difference measurement result until the output of the DDS is stable.
    Type: Grant
    Filed: August 2, 2022
    Date of Patent: April 23, 2024
    Assignee: Zhejiang University
    Inventors: Xinglin Sun, Haojie Wu, Xinyue Tan, Lingyun Ye
  • Publication number: 20230092014
    Abstract: A phase frequency detector-based high-precision feedback frequency measurement apparatus and method: a Field Programmable Gate Array (FGPA) roughly measures a frequency fx of a measured time-frequency pulse by an equal-precision frequency measurement method; a Direct Digital Synthesizer (DDS) automatically synthesizes a frequency fx’ according to the fx roughly measured by the FPGA; the fx and the fx’ are sent to a phase frequency detector for performing phase frequency detection and then sent to the FPGA after passing through a charge pump, a low-pass filter circuit, and an (Analogue-to-Digital) A/D converter; the FPGA processes a frequency difference obtained by the phase frequency detector and then transmits the processed frequency difference to the DDS to form a negative feedback frequency measurement system so that the DDS continuously adjusts the fx’ according to a frequency difference measurement result until the output of the DDS is stable.
    Type: Application
    Filed: August 2, 2022
    Publication date: March 23, 2023
    Inventors: Xinglin Sun, Haojie Wu, Xinyue Tan, Lingyun Ye
  • Publication number: 20130332451
    Abstract: A system and method for correlating personal identifiers with corresponding online presence are disclosed. A particular embodiment includes providing, by use of a data processor, a user interface to enable a user to specify a person or personal identifier of interest; producing search terms associated with the person or personal identifier of interest; using the search terms in a search query to obtain related search results collected from a plurality of content sources; filtering the search results to obtain information indicative of a plurality of profile sources; using the information indicative of a plurality of profile sources to obtain related profiles collected from a plurality of profile sources; filtering the related profiles to obtain a set of matching profiles; and reporting information on the person or personal identifier of interest and links to the corresponding matching profiles to the user.
    Type: Application
    Filed: March 7, 2013
    Publication date: December 12, 2013
    Applicant: FLIPTOP, INC.
    Inventors: Doug Camplejohn, Dan Chiao, Jerry Chou, Tom Lee, Kevin Liu, Robbie Cheng, Chiahung Lin, Johnson Hsiang, Winston Chen, Steven Kao, Haoji Wu, Aleksandra Bailey, Polina Grinbaum
  • Patent number: D1057558
    Type: Grant
    Filed: August 23, 2024
    Date of Patent: January 14, 2025
    Inventor: Haojie Wu
  • Patent number: D1058681
    Type: Grant
    Filed: September 3, 2024
    Date of Patent: January 21, 2025
    Inventor: Haojie Wu