Patents by Inventor Xinfa Zhang

Xinfa Zhang 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).

  • Content transmission security protection device system and method
    Patent number: 8892882
    Abstract: The invention relates to information security technologies, provides a content security transmission device and a content security transmission system which separate data transmission function of a digital interface from data management and processing function thereof, and provides a content security transmission method based on the device and the system. The content security transmission protection device comprises digital interfaces and a management/processing unit, the management/processing unit is configured in a specific chip in the device, used for updating a revocation list stored therein and collecting information from downstream devices. A transmitting device and a forwarding device in the content security transmission protection system comprise digital interfaces and management/processing units.
    Type: Grant
    Filed: November 26, 2009
    Date of Patent: November 18, 2014
    Assignee: Sichuan Changhong Electric Co., Ltd.
    Inventors: Xianhong Liu, Jinfeng Yang, Hongjuan Kang, Enyang Zhang, Guangqing Zheng, Yanyan Wang, Xinfa Zhang
  • CONTENT SECURITY TRANSMISSION PROTECTION DEVICE AND SYSTEM THEREOF, AND CONTENT SECURITY TRANSMISSION METHOD
    Publication number: 20120144200
    Abstract: The invention relates to information security technologies, provides a content security transmission device and a content security transmission system which separate data transmission function of a digital interface from data management and processing function thereof, and provides a content security transmission method based on the device and the system. The content security transmission protection device comprises digital interfaces and a management/processing unit, the management/processing unit is configured in a specific chip in the device, used for updating a revocation list stored therein and collecting information from downstream devices. A transmitting device and a forwarding device in the content security transmission protection system comprise digital interfaces and management/processing units.
    Type: Application
    Filed: November 26, 2009
    Publication date: June 7, 2012
    Applicant: SICHUAN CHANGHONG ELECTRIC CO., LTD.
    Inventors: Xianhong Liu, Jinfeng Yang, Hongjuan Kang, Enyang Zhang, Guangqing Zheng, Yanyan Wang, Xinfa Zhang