Patents by Inventor Hongtao Cao

Hongtao Cao 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).

  • Method and apparatus for data transmission
    Patent number: 9106648
    Abstract: Embodiments of the present invention relate to communications technologies and disclose a method and a system for establishing a data transmission channel, a SIP server, and a session border controller. A first authentication request message is sent by a first terminal. The first authentication request message includes identifier information of the first terminal and identity information of a second terminal. It is determined that the identifier information of the first terminal matches pre-stored authentication information of the first terminal. According to the identity information of the second terminal, a second authentication request message that carries authentication information of the second terminal is sent to the second terminal. After receiving an authentication success response message from the second terminal, a data transmission channel is established between the first terminal and the second terminal.
    Type: Grant
    Filed: December 21, 2013
    Date of Patent: August 11, 2015
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xueyi Zhou, Jun Yang, Kai Zhang, Hongtao Cao
  • Method and Apparatus for Data Transmission
    Publication number: 20140109213
    Abstract: Embodiments of the present invention relate to communications technologies and disclose a method and a system for establishing a data transmission channel, a SIP server, and a session border controller. A first authentication request message is sent by a first terminal. The first authentication request message includes identifier information of the first terminal and identity information of a second terminal. It is determined that the identifier information of the first terminal matches pre-stored authentication information of the first terminal. According to the identity information of the second terminal, a second authentication request message that carries authentication information of the second terminal is sent to the second terminal. After receiving an authentication success response message from the second terminal, a data transmission channel is established between the first terminal and the second terminal.
    Type: Application
    Filed: December 21, 2013
    Publication date: April 17, 2014
    Applicant: Huawei Technologies Co., LTD
    Inventors: Xueyi Zhou, Jun Yang, Kai Zhang, Hongtao Cao
  • Plate
    Patent number: D778116
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: February 7, 2017
    Assignee: ArtonUSA Corporation
    Inventor: Hongtao Cao