Patents by Inventor Weidong Chen

Weidong Chen 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).

  • Publication number: 20180263037
    Abstract: The techniques described herein relate to methods, apparatus, and computer readable media configured to decode modulated data. A modulated signal is received. A format of the modulated signal is determined, wherein the format can include a first format comprising a first type of modulated signal, or a second format comprising the first type of modulated signal and a second type of modulated signal that is different than the first type. The modulated signal is decoded by determining a frequency shift amount based on the format of the modulated signal, shifting a frequency band of the first type of modulated signal from an original position to a shifted position, thereby shifting a center frequency of the first type of modulated signal by the frequency shift amount, and filtering, based on the format of the modulated signal, signals outside of the frequency band of the shifted first type of modulated signal.
    Type: Application
    Filed: October 10, 2017
    Publication date: September 13, 2018
    Applicant: Casa Systems, Inc.
    Inventors: Tao Yu, Douglas Keith Rosich, Weidong Chen
  • Patent number: 9876531
    Abstract: A system and method for signal processing in a cable modem termination system (CMTS) is provided. A CMTS receiver in communication with a plurality of cable modems at a upstream signal or a cable modem receiver in communication with the CMTS at a downstream signal. A plurality of Advanced Time Division Multiple Access (“ATDMA”) channel processors include a filter for recovering an ATDMA signal and a Orthogonal Frequency Division Multiplexing (“OFDM”) channel processor includes a filter for processing a combined OFDM and ATDMA signal. A summation module subtracts the ATDMA signal from the combined ATDMA and OFDM signal to obtain a clean OFDM signal.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: January 23, 2018
    Assignee: Casa Systems, Inc.
    Inventors: Douglas Rosich, Weidong Chen, Tao Yu
  • Publication number: 20170373716
    Abstract: A system and method for signal processing in a cable modem termination system (CMTS) is provided. A CMTS receiver in communication with a plurality of cable modems at a upstream signal or a cable modem receiver in communication with the CMTS at a downstream signal. A plurality of ATDMA channel processors include a filter for recovering an ATDMA signal and a OFDM channel processor includes a filter for processing a combined OFDM and ATDMA signal. A summation module subtracts the ATDMA signal from the combined ATDMA and OFDM signal to obtain a clean OFDM signal.
    Type: Application
    Filed: June 22, 2016
    Publication date: December 28, 2017
    Applicant: Casa Systems, Inc.
    Inventors: Douglas Rosich, Weidong Chen, Tao Yu
  • Patent number: 9605874
    Abstract: A heat pack includes a housing, a first phase change material (PCM) that is contained in the housing, and a thermal storage buffer that is contained in the housing. The thermal storage buffer includes a second PCM. An initiator is in operative contact with the first PCM. Activation of the initiator causes crystallization of the first PCM, and the first PCM cooperates with the thermal storage buffer to provide heat at a predetermined temperature range upon crystallization of the first PCM.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: March 28, 2017
    Assignee: Warmilu, LLC
    Inventors: Rachel Lynn Rademacher, Weidong Chen, Grace Hsia
  • Publication number: 20170045060
    Abstract: A diagonal flow fan includes an air duct, a motor, a fan wheel, a blade, an air guiding ring, and a wheel hub, the air guiding ring has one end connected to the air duct, and the blade and the wheel hub are located inside the fan wheel, the blade has one end connected to the wheel hub and another end connected to the fan wheel, wherein the motor is located inside the wheel hub and connected to the wheel hub, the air guiding ring has another end located at an inner side of the fan wheel, and a gap exists between the air guiding ring and the fan wheel.
    Type: Application
    Filed: October 22, 2014
    Publication date: February 16, 2017
    Applicant: GUANGDONG FANS-TECH ELECTRIC CO., LTD.
    Inventors: Shuhua HE, Weidong CHEN
  • Patent number: 9210269
    Abstract: In one embodiment, a method includes receiving requests to join a conference from a plurality of user devices proximate a first endpoint. The requests include a username. The method also includes receiving an audio signal for the conference from the first endpoint. The first endpoint is operable to capture audio proximate the first endpoint. The method also includes transmitting the audio signal to a second endpoint, remote from the first endpoint. The method also includes identifying, by a processor, an active speaker proximate the first endpoint based on information received from the plurality of user devices.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: December 8, 2015
    Assignee: Cisco Technology, Inc.
    Inventors: Yanghua Liu, Weidong Chen, Biren Gandhi, Raghurama Bhat, Joseph Fouad Khouri, John Joseph Houston, Brian Thomas Toombs
  • Publication number: 20140343145
    Abstract: Disclosed herein are methods for detecting the presence of an isocitrate dehydrogenase mutation in a sample from a subject. Also disclosed are methods diagnosing and treating subjects having a cancer including determining whether the cancer may likely be treated with one or more retinoids.
    Type: Application
    Filed: November 27, 2012
    Publication date: November 20, 2014
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Arthur P. Chou, Albert Lai, Reshmi Chowdhury, Weidong Chen
  • Publication number: 20140261380
    Abstract: A heat pack includes a housing, a first phase change material (PCM) that is contained in the housing, and a thermal storage buffer that is contained in the housing. The thermal storage buffer includes a second PCM. An initiator is in operative contact with the first PCM. Activation of the initiator causes crystallization of the first PCM, and the first PCM cooperates with the thermal storage buffer to provide heat at a predetermined temperature range upon crystallization of the first PCM.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: Warmilu, LLC
    Inventors: Rachel Lynn Rademacher, Weidong Chen, Grace Hsia
  • Publication number: 20140185630
    Abstract: Systems and methods are provided for performing fiber node splits in DOCSIS cable systems by performing remote modulation and/or demodulation in the fiber node. In the downstream direction, a high-speed digital fiber optic interface can be used to send data from the CMTS to the fiber node, which then modulates the data onto separate downstream interfaces for subsequent distribution of the downstream data to CMs and/or STBs. In the upstream direction, different upstream interfaces from the CMs and/or STBs may be demodulated into digital streams which can then be combined into a single, time division multiplexed digital stream that is transmitted to the CMTS. As such, the modulation and demodulation functions are performed remotely in the fiber node instead of at the CMTS.
    Type: Application
    Filed: January 3, 2013
    Publication date: July 3, 2014
    Applicant: CASA SYSTEMS, INC.
    Inventors: David Fox, Weidong Chen, Jerry Guo, Douglas Rosich
  • Patent number: 8745135
    Abstract: In one embodiment, a scheduled collaboration session in a social network is detected, the scheduled collaboration session to occur at a time in the future and at that time provide real-time communication among participants. A plurality of participants expected to attend the scheduled collaboration session are detected. A subject matter of the scheduled collaboration session is detected. One or more key words are derived from the detected subject matter of the scheduled collaboration session. Profiles maintained in the social network for the plurality of participants expected to attend the scheduled collaboration session are updated based on the one or more key words, the updating to include refining an area of expertise indicated in the profiles.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: June 3, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Weidong Chen, Lei Zhu, Min Zhu
  • Publication number: 20140118472
    Abstract: In one embodiment, a method includes receiving requests to join a conference from a plurality of user devices proximate a first endpoint. The requests include a username. The method also includes receiving an audio signal for the conference from the first endpoint. The first endpoint is operable to capture audio proximate the first endpoint. The method also includes transmitting the audio signal to a second endpoint, remote from the first endpoint. The method also includes identifying, by a processor, an active speaker proximate the first endpoint based on information received from the plurality of user devices.
    Type: Application
    Filed: October 31, 2012
    Publication date: May 1, 2014
    Inventors: Yanghua Liu, Weidong Chen, Biren Gandhi, Raghurama Bhat, Joseph Fouad Khouri, John Joseph Houston, Brian Thomas Toombs
  • Patent number: 8565266
    Abstract: Systems and methods are provided for improving the signal quality and performance in a cable operator's Hybrid Fiber Coax (HFC) plant by adding DOCSIS intelligence to components within the HFC plant. These intelligent DOCSIS devices, referred to here as DOCSIS Intelligent Nodes (DINs), intercept the upstream signal from cable modems and set top boxes, and perform various types of signal processing on the signals based upon knowledge of the signal characteristics obtained from CMTS control structures such as MAPs and Upstream Channel Descriptors (UCDs). The DIN functionality can be integrated into any type of device found in HFC networks such as RF amplifiers and fiber nodes.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: October 22, 2013
    Assignee: Casa Systems, Inc.
    Inventors: David Bryan Fox, Douglas Keith Rosich, Weidong Chen, Jerry Guo
  • Publication number: 20130266310
    Abstract: Systems and methods are provided for improving the signal quality and performance in a cable operator's Hybrid Fiber Coax (HFC) plant by adding DOCSIS intelligence to components within the HFC plant. These intelligent DOCSIS devices, referred to here as DOCSIS Intelligent Nodes (DINs), intercept the upstream signal from cable modems and set top boxes, and perform various types of signal processing on the signals based upon knowledge of the signal characteristics obtained from CMTS control structures such as MAPs and Upstream Channel Descriptors (UCDs). The DIN functionality can be integrated into any type of device found in HFC networks such as RF amplifiers and fiber nodes.
    Type: Application
    Filed: April 6, 2012
    Publication date: October 10, 2013
    Inventors: David B. FOX, Douglas K. Rosich, Weidong Chen, Jerry Guo
  • Publication number: 20130266049
    Abstract: Systems and methods are provided for improving the signal quality and performance in a cable operator's Hybrid Fiber Coax (HFC) plant by adding DOCSIS intelligence to components within the HFC plant. These intelligent DOCSIS devices, referred to here as DOCSIS Intelligent Nodes (DINs), intercept the upstream signal from cable modems and set top boxes, and perform various types of signal processing on the signals based upon knowledge of the signal characteristics obtained from CMTS control structures such as MAPs and Upstream Channel Descriptors (UCDs). The DIN functionality can be integrated into any type of device found in HFC networks such as RF amplifiers and fiber nodes.
    Type: Application
    Filed: June 18, 2012
    Publication date: October 10, 2013
    Applicant: Casa Systems, Inc.
    Inventors: David B. FOX, Douglas K. Rosich, Weidong Chen, Jerry Guo
  • Patent number: 8539027
    Abstract: In one embodiment, the methods and apparatuses detect a collaboration session with a plurality of current participants; detect a subject matter of the collaboration session; and search for an additional participant based on the subject matter.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: September 17, 2013
    Assignee: Cisco Technology, Inc.
    Inventors: Weidong Chen, Lei Zhu, Min Zhu
  • Patent number: 8516476
    Abstract: In one embodiment, the methods and apparatuses request an installation of an application; detect a user requesting the application; detect a profile associated with the user; and grant permission to install the application based on an installation permission.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: August 20, 2013
    Assignee: Cisco Technology, Inc.
    Inventors: Weidong Chen, Lei Zhu, Min Zhu, Chris Kangas, Matthew Sheppard, David Knight
  • Patent number: 8445055
    Abstract: The invention relates to a method for the fabrication of composite palladium or palladium alloy membranes. The surface of the porous ceramic substrate is modified with pencil to create a uniform and smooth layer, and the membrane is deposited via electroless plating. The advantages of the pencil modification are a reduction of the substrate surface roughness and a repair of substrate surface defects, which leads to a great improvement in the membrane uniformity and hydrogen permeation performances. This method is facile and economic, and it is especially effective on low-cost macroporous ceramic substrate materials. Furthermore, this method generates almost no pollution and therefore is environmentally benign.
    Type: Grant
    Filed: November 27, 2009
    Date of Patent: May 21, 2013
    Assignee: Nanjing University of Technology
    Inventors: Yan Huang, Xiaojuan Hu, Weidong Chen
  • Patent number: 8423612
    Abstract: In one embodiment, the methods and apparatuses request an application; detect a user requesting the application; detect a profile associated with the user; and grant permission to access the application based on an access parameter.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: April 16, 2013
    Assignee: Cisco Technology, Inc.
    Inventors: Weidong Chen, Lei Zhu, Min Zhu, Chris Kangas, Matthew Sheppard, David Knight
  • Patent number: 8413260
    Abstract: In one embodiment, the methods and apparatuses detect an application associated with a requester; suggest the application based on a requester parameter; select the application by the requester; and automatically initiate the application for the requester.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: April 2, 2013
    Assignee: Cisco Technology, Inc.
    Inventors: Weidong Chen, Lei Zhu, Min Zhu, Chris Kangas, Matthew Sheppard, David Knight
  • Patent number: 8407289
    Abstract: In one embodiment, the methods and apparatuses detect shared content during a collaboration session; detect a content type based on the shared content; suggest an application based on the content type; and initiate the application during the collaboration session.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: March 26, 2013
    Assignee: Cisco Technology, Inc.
    Inventors: Weidong Chen, Lei Zhu, Min Zhu, Chris Kangas, Matthew Sheppard, David Knight