Patents by Inventor Junhua Ma

Junhua Ma 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: 12117473
    Abstract: A method and system for measuring broadband impedance of a renewable energy power generation device. A voltage disturbance is injected into the renewable energy power generation device by using a disturbance injection device, and three-phase voltage and three-phase current of each of preset measurement points are acquired. Relevant variables before the renewable energy power generation device is decoupled from a measurement device and impedance of a power grid, are calculated according to the three-phase voltage and the three-phase current of each of the preset measurement points. Impedance of the renewable energy power generation device after being decoupled from the measurement device and the impedance of the power grid, is calculated.
    Type: Grant
    Filed: June 12, 2024
    Date of Patent: October 15, 2024
    Assignee: CHINA ELECTRIC POWER RESEARCH INSTITUTE
    Inventors: Weisheng Wang, Guanghui Li, Guoqing He, Yuntao Xiao, Yu Lei, Zixuan Guo, Shuanglei Feng, Caiyun Gao, Junhua Ma, Keke Liu, Liping Gao, Ni Zhen, Yuye Li, Yuqi Duan, Fangfang Yu
  • Patent number: 9894689
    Abstract: Example systems, methods, and logic are provided herein for detecting a numerical identifier of an endpoint. In one example, a connectivity manager establishes a wireless communication session with a fixed endpoint using a wireless communication protocol. The connectivity manager module then generates a Phone Book Access Profile (PBAP) request to download a phone number associated with the fixed endpoint. The connectivity manager module receives, via the wireless communication session, a PBAP response comprising a phone number identifying the fixed endpoint and inputs the phone number identifying the fixed endpoint into a field used for initiating a call to the fixed endpoint.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: February 13, 2018
    Assignee: Cisco Technology, Inc.
    Inventors: Junhua Ma, Bo Lei, Zhigang Peng, Yanhui Wang, Xiaohui Yu
  • Publication number: 20160226930
    Abstract: In one embodiment a user interface for a communication device is described, the user interface including a first icon representing a first communication event between a first party and a second party, and a second icon representing a second communication event between the first party and a third party, a processor to receive input signals from the first party, the signals input via the user interface, the processor, in response to the received input signals, performs one of a communication event transfer including transferring the first communication event from being between the first party and the second party to being between the second party and the third party, and a communication event merger including the creation of a merged communication event between the user, the second party, and the third party. Related methods, systems, and apparatuses are also described.
    Type: Application
    Filed: January 29, 2015
    Publication date: August 4, 2016
    Inventors: Shuyi ZHANG, Junhua MA, XiuYing ZHANG, Chongni LI
  • Publication number: 20160095141
    Abstract: Example systems, methods, and logic are provided herein for detecting a numerical identifier of an endpoint. In one example, a connectivity manager establishes a wireless communication session with a fixed endpoint using a wireless communication protocol. The connectivity manager module then generates a Phone Book Access Profile (PBAP) request to download a phone number associated with the fixed endpoint. The connectivity manager module receives, via the wireless communication session, a PBAP response comprising a phone number identifying the fixed endpoint and inputs the phone number identifying the fixed endpoint into a field used for initiating a call to the fixed endpoint.
    Type: Application
    Filed: September 30, 2014
    Publication date: March 31, 2016
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Junhua Ma, Bo Lei, Zhigang Peng, Yanhui Wang, Xiaohui Yu