Patents by Inventor Zilian Ou

Zilian Ou 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 device for encoding/decoding with quantization parameter, block size and coding unit size
    Patent number: 9571829
    Abstract: An encoding includes: obtaining, by an encoder, data to be encoded, where the data to be encoded is at least one LCU; determining, a quantization depth parameter of the LCU according to a preset bit rate control algorithm, and adding the quantization depth parameter into the data to be encoded; determining, a QP of each CU according to a size of a minimum picture block and a size of each CU included in the LCU; calculating, by the encoder, a QP difference of each CU according to the QP of each CU and a QP prediction value of each CU; for each CU that satisfies a preset condition, carrying, by the encoder, the QP difference of the CU in the CU; and encoding, by the encoder, the quantization depth parameter, the QP difference of the CU that satisfies the preset condition, and each CU to obtain a bit stream.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: February 14, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Haitao Yang, Chao Pang, Zilian Ou
  • ENCODING METHOD AND DEVICE, AND DECODING METHOD AND DEVICE
    Publication number: 20140079117
    Abstract: An encoding includes: obtaining, by an encoder, data to be encoded, where the data to be encoded is at least one LCU; determining, a quantization depth parameter of the LCU according to a preset bit rate control algorithm, and adding the quantization depth parameter into the data to be encoded; determining, a QP of each CU according to a size of a minimum picture block and a size of each CU included in the LCU; calculating, by the encoder, a QP difference of each CU according to the QP of each CU and a QP prediction value of each CU; for each CU that satisfies a preset condition, carrying, by the encoder, the QP difference of the CU in the CU; and encoding, by the encoder, the quantization depth parameter, the QP difference of the CU that satisfies the preset condition, and each CU to obtain a bit stream.
    Type: Application
    Filed: September 11, 2013
    Publication date: March 20, 2014
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Haitao Yang, Chao Pang, Zilian Ou