Patents by Inventor Chengwei Zhang

Chengwei 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).

  • Publication number: 20140089318
    Abstract: Embodiments of the present invention provide a metadata querying method and apparatus. The method includes: sampling at least one piece of first metadata from to-be-searched-for metadata; using at least a part of feature values in each piece of the sampled first metadata as an index, and searching a sparse index table preset in a memory for a corresponding container identifier; selecting, according to the number of times that a same container identifier is found, a container corresponding to a container identifier that meets a set condition; loading metadata in the selected container into a metadata cache; and searching the metadata cache for a data block that is the same as the to-be-searched-for metadata. In the embodiments of the present invention, querying performance can be improved and occupied memory space can be reduced.
    Type: Application
    Filed: December 2, 2013
    Publication date: March 27, 2014
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Qiang LIU, Chengwei ZHANG
  • Publication number: 20140020135
    Abstract: The present invention provides methods of increasing nitrogen utilization efficiency (NUE) in a transgenic plant comprising the introduction of a nucleic acid encoding a dep1 polypeptide into a plant to produce a transgenic plant that expresses the nucleic acid to produce the dep1 polypeptide, thereby resulting in an increased NUE as compared with a control plant. Also provided are methods of increasing NUE in a plant comprising reducing the amount and/or activity of a DEP1 polypeptide.
    Type: Application
    Filed: January 27, 2012
    Publication date: January 16, 2014
    Applicant: Syngenta Participations AG
    Inventors: Xiangdong Fu, Kun Wu, Qian Qian, Chengwei Zhang, Xueying Liu, Shuansuo Wang
  • Publication number: 20090307777
    Abstract: A method for predicting a network attack action, including: monitoring a network status parameter and obtaining information of an attack action according to a change of the network status parameter; selecting a subsequent attack action which has a most possibility to happen from a plurality of subsequent attack actions of the attack action according to a correspondence between the attack action and the plurality of subsequent attack actions, the subsequent attack action which has the most possibility to happen being a subsequent attack action with a largest occurrence number among the subsequent attack actions corresponding to the attack action; and outputting the subsequent attack action which has the most possibility to happen as a predicted network attack action. A device for predicting a network attack action including an attack action management unit is also provided.
    Type: Application
    Filed: July 16, 2008
    Publication date: December 10, 2009
    Inventors: Xinggao He, Chong Fu, Fengli Zhang, Zhenqi Cao, Dunquan Wang, Niejun Zheng, Chengwei Zhang, Bo Wang, Changyi Lu