Patents by Inventor Dalin Wu

Dalin Wu 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).

  • Multilevel read-only optical disk and method for producing the same
    Patent number: 7680024
    Abstract: The present invention provides a multilevel read-only optical disk and the method for producing the same. The multilevel read-only optical disk comprises a plurality of the recording pits, each of the longitudinal sections of the recording pits has a multilevel arbitrary shape; the areas of the longitudinal sections of the recording pits are not identical each other; the area of each of the longitudinal sections of the recording pits is defined by the following formula: S=?h(x)dx, where S represents the area of each of the longitudinal sections of the recording pits, x represents the coordinate value along the width direction of the recording pits, h(x) represents the pit-depth distribution function of the longitudinal sections of the recording pits and the region of the integration covers the whole longitudinal sections of the recording pits. Furthermore, the run length of the multilevel read-only optical disk is limited.
    Type: Grant
    Filed: April 8, 2005
    Date of Patent: March 16, 2010
    Assignee: Shanghai Xiangzhang Electronics Co., Ltd.
    Inventors: Duanyi Xu, Jianmin Liu, Hao Wang, Da Lu, Longfa Pan, Yi Ni, Ken Chen, Jianping Xiong, Dalin Wu, Jing Pei, Jianshe Ma, Xiaohui Lu, Chenyu Su
  • Multilevel read-only optical disk and method for producing the same
    Publication number: 20060203706
    Abstract: The present invention provides a multilevel read-only optical disk and the method for producing the same. The multilevel read-only optical disk comprises a plurality of the recording pits, each of the longitudinal sections of the recording pits has a multilevel arbitrary shape; the areas of the longitudinal sections of the recording pits are not identical each other; the area of each of the longitudinal sections of the recording pits is defined by the following formula: S=?h(x)dx, where S represents the area of each of the longitudinal sections of the recording pits, x represents the coordinate value along the width direction of the recording pits, h(x) represents the pit-depth distribution function of the longitudinal sections of the recording pits and the region of the integration covers the whole longitudinal sections of the recording pits. Furthermore, the run length of the multilevel read-only optical disk is limited.
    Type: Application
    Filed: April 8, 2005
    Publication date: September 14, 2006
    Inventors: Duanyi Xu, Jianmin Liu, Hao Wang, Da Lu, Longfa Pan, Yi Ni, Ken Chen, Jianping Xiong, Dalin Wu, Jing Pei, Jianshe Ma, Xiaohui Lu, Chenyu Su