Patents by Inventor Sifang Zhang

Sifang 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).

  • Device and method for implementing a coloring ring back tone service and device for acquiring a coloring ring back tone file
    Patent number: 8265246
    Abstract: Embodiments of the invention provide a device and method for implementing a Coloring Ring Back Tone (CRBT) service and a device for acquiring a CRBT file. The device for implementing a CRBT service includes a first receiving module adapted to receive CRBT access information, a channel management module adapted to acquire a real-time CRBT file according to the CRBT access information, and a playing module adapted to play the real-time CRBT file. The method for implementing a CRBT service includes acquiring a real-time CRBT file customized by a subscriber according to CRBT access information and playing the real-time CRBT file to a calling subscriber.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: September 11, 2012
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Sifang Zhang
  • DEVICE AND METHOD FOR IMPLEMENTING A COLORING RING BACK TONE SERVICE AND DEVICE FOR ACQUIRING A COLORING RING BACK TONE FILE
    Publication number: 20090214002
    Abstract: Embodiments of the invention provide a device and method for implementing a Coloring Ring Back Tone (CRBT) service and a device for acquiring a CRBT file. The device for implementing a CRBT service includes a first receiving module adapted to receive CRBT access information, a channel management module adapted to acquire a real-time CRBT file according to the CRBT access information, and a playing module adapted to play the real-time CRBT file. The method for implementing a CRBT service includes acquiring a real-time CRBT file customized by a subscriber according to CRBT access information and playing the real-time CRBT file to a calling subscriber.
    Type: Application
    Filed: February 20, 2009
    Publication date: August 27, 2009
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventor: Sifang ZHANG