Patents by Inventor Max Wong

Max Wong 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).

  • SOLUTION FOR GENERATING A TOUCHLESS ELEVATOR CALL
    Publication number: 20230049228
    Abstract: The invention relates to a method for generating an elevator call. The method comprises: obtaining (202) image data representing at least one symbol (310, 310a, 310b) illustrated on a symbol representing device (320) from at least one image sensing device (112), identifying (204) the at least one symbol (310, 310a, 310b) from the obtained image data, and generating (206) the elevator call in accordance with the identified at least one symbol (310, 310a, 310b). The invention relates also to an elevator control unit (108) and an elevator system (100) performing at least partly the method.
    Type: Application
    Filed: October 27, 2022
    Publication date: February 16, 2023
    Applicant: KONE CORPORATION
    Inventors: Tapani Talonen, Antti Perko, Max Wong, Joe Wong, Jussi Laurila, Visa Rauta
  • Zero-delay structure for sub-band echo cancellation
    Patent number: 6661895
    Abstract: A zero-delay structure to be used in sub-band echo cancellation systems. In telecommunications, a delay is usually introduced in sub-band decomposition and/or sub-band reconstruction. This invention will help remove this. This structure not only removes the delay but does not sacrifice the performance of the echo canceller. It is to be used in combination with any sub-band-based echo canceller or wavelet echo canceller.
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: December 9, 2003
    Assignee: Zarlink Semiconductor Inc.
    Inventors: Qu Jin, Kon Max Wong, Qiang Wu, Philippe Wu, Gordon J. Reesor
  • Sub-band echo canceller using optimum wavelet packets and cross-band cancellation
    Patent number: 5937009
    Abstract: An echo canceller comprising a first wavelet decomposition block for decomposing a reference signal into a plurality of reference wavelet packets; a second wavelet decomposition block for decomposing an echo signal into a plurality of echo signal packets; an adaptive filter bank for receiving and filtering the reference wavelet packets and in response generating a plurality of filtered output packets replicating the echo signal packets; a plurality of subtracters for receiving and subtracting respective ones of the filtered output packets from the echo signal packets and in response generating and applying a plurality of error signals to the adaptive filter bank for modifying the transfer function of the adaptive filter bank; and a wavelet reconstruction block for receiving and reconstructing the error signals to form a residual signal from which the echo signal has been cancelled. Optimum wavelet filters for the best echo cancellation are provided, as are two wavelet echo cancellation structures.
    Type: Grant
    Filed: January 15, 1997
    Date of Patent: August 10, 1999
    Inventors: Kon Max Wong, Qu Jin, Qiang Wu, Phillippe Wu, Gordon J. Reesor