Patents by Inventor Yazhi Liu

Yazhi Liu 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).

  • Privacy protection for participatory sensing system
    Patent number: 9530026
    Abstract: Provided is a method that may be used for privacy protection. The method comprises: generating a pseudonym at a user equipment in association with sensed data; calculating a unique value based upon the pseudonym using a first algorithm; sending the unique value and the sensed data to a server; receiving from the server a certificate, wherein the certificate is calculated based at least in part on the unique value using a second algorithm; and sending at least the pseudonym and the certificate to a certification center via a secure channel, for obtaining a reward associated with the sensed data; wherein the certification center is internal or external to the server. By this method, a user's identify may be protected.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: December 27, 2016
    Assignee: Nokia Technologies Oy
    Inventors: Junsong Zhang, Jian Ma, Xiong Li, Yazhi Liu, Ye Tian
  • PRIVACY PROTECTION FOR PARTICIPATORY SENSING SYSTEM
    Publication number: 20150128282
    Abstract: Provided is a method that may be used for privacy protection. The method comprises: generating a pseudonym at a user equipment in association with sensed data; calculating a unique value based upon the pseudonym using a first algorithm; sending the unique value and the sensed data to a server; receiving from the server a certificate, wherein the certificate is calculated based at least in part on the unique value using a second algorithm; and sending at least the pseudonym and the certificate to a certification center via a secure channel, for obtaining a reward associated with the sensed data; wherein the certification center is internal or external to the server. By this method, a user's identify may be protected.
    Type: Application
    Filed: June 8, 2012
    Publication date: May 7, 2015
    Applicant: Nokia Corporation
    Inventors: Junsong Zhang, Jian Ma, Xiong Li, Yazhi Liu, Ye Tian