Patents by Inventor Dongmei Lei

Dongmei Lei 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).

  • Patent number: 10203898
    Abstract: A median filter device is provided with a reordered circuit, a comparison circuit and a data refresh circuit on the basis of the conventional data buffer circuit and data register circuit. The reorder circuit re-sorts the signal data stored in the data buffer circuit in a preceding clock cycle according to their numerical values. The comparison circuit compares the new signal datum entered in the current clock cycle with the signal data already stored to generate a median. The data refresh circuit updates the signal codes stored in the data register circuit with the signal codes corresponding to the new signal data, for calculation of the median in a following clock cycle. The length of the data buffer circuit and data register circuit can be reduced from N signal data to N?1 signal data, which achieves less data storage capacity, smaller circuit area, easier data processing and higher operation efficiency.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: February 12, 2019
    Assignees: SHANGHAI IC R&D CENTER CO., LTD, CHENGDU IMAGE DESIGN TECHNOLOGY CO., LTD.
    Inventor: Dongmei Lei
  • Publication number: 20170315748
    Abstract: A median filter device is provided with a reordered circuit, a comparison circuit and a data refresh circuit on the basis of the conventional data buffer circuit and data register circuit. The reorder circuit re-sorts the signal data stored in the data buffer circuit in a preceding clock cycle according to their numerical values. The comparison circuit compares the new signal datum entered in the current clock cycle with the signal data already stored to generate a median. The data refresh circuit updates the signal codes stored in the data register circuit with the signal codes corresponding to the new signal data, for calculation of the median in a following clock cycle. The length of the data buffer circuit and data register circuit can be reduced from N signal data to N-1 signal data, which achieves less data storage capacity, smaller circuit area, easier data processing and higher operation efficiency.
    Type: Application
    Filed: November 30, 2015
    Publication date: November 2, 2017
    Applicants: SHANGHAI IC R&D CENTER CO., LTD, CHENGDU LIGHT COLLECTOR TECHNOLOGY CO., LTD.
    Inventor: Dongmei Lei
  • Patent number: 7612454
    Abstract: One aspect of the invention provides an integrated circuit(IC) [400b]. The IC comprises transistors [410b] and contact fuses [422b]. The contact fuses each comprise a conducting layer [424b], a frustum-shaped contact [426b] has a narrower end that contacts the conducting layer and a first metal layer [427b] that is located over the conducting layer. A wider end of the frustum-shaped contact contacts the first metal layer. The frustum-shaped contact has a ratio of an opening of the wider end to the narrower end that is at least about 1.2. The contact fuses each further include a heat sink [432b] that is located over and contacts the first metal layer.
    Type: Grant
    Filed: July 14, 2008
    Date of Patent: November 3, 2009
    Assignee: Texas Instruments Incorporated
    Inventors: Honglin Guo, Dongmei Lei, Brian Goodlin, Joe McPherson
  • Publication number: 20080265366
    Abstract: One aspect of the invention provides an integrated circuit(IC) [400b]. The IC comprises transistors [410b] and contact fuses [422b]. The contact fuses each comprise a conducting layer [424b], a frustum-shaped contact [426b] has a narrower end that contacts the conducting layer and a first metal layer [427b] that is located over the conducting layer. A wider end of the frustum-shaped contact contacts the first metal layer. The frustum-shaped contact has a ratio of an opening of the wider end to the narrower end that is at least about 1.2. The contact fuses each further include a heat sink [432b] that is located over and contacts the first metal layer.
    Type: Application
    Filed: July 14, 2008
    Publication date: October 30, 2008
    Applicant: Texas Instruments Incorporated
    Inventors: Honglin Guo, Dongmei Lei, Brian Goodlin, Joe McPherson
  • Patent number: 7413980
    Abstract: One aspect of the invention provides an integrated circuit (IC). The IC comprises transistors and contact fuses. The contact fuses each comprise a conducting layer, a frustum-shaped contact has a narrower end that contacts the conducting layer and a first metal layer that is located over the conducting layer. A wider end of the frustum-shaped contact contacts the first metal layer. The frustum-shaped contact has a ratio of an opening of the wider end to the narrower end that is at least about 1.2. The contact fuses each further include a heat sink that is located over and contacts the first metal layer.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: August 19, 2008
    Assignee: Texas Instruments Incorporated
    Inventors: Honglin Guo, Dongmei Lei, Brian Goodlin, Joe McPherson