Patents by Inventor Manuel Silverio da Silva Costa

Manuel Silverio da Silva Costa 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).

  • Practical network node coordinate estimation
    Patent number: 6947386
    Abstract: Substantially accurate estimation of coordinates of a subject network node in a coordinate space is accomplished by considering designated coordinates of other positioned nodes within the network. The designation of coordinates in the coordinate space to such nodes allows the computation of predicted coordinate distances between two network nodes based on the coordinates. By optimizing the network distance errors between measured distances and predicted coordinate distances, the predicted coordinates of a subject node joining the network can be iteratively refined. With these estimated coordinates, the coordinate distance between two points in the space may be computed as a prediction of the network distance between the two corresponding nodes. Furthermore, coordinate-based coordinate estimation lends itself to security precautions to protect against malicious reference nodes or external interference.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: September 20, 2005
    Assignee: Microsoft Corporation
    Inventors: Miguel Oom Temudo de Castro, Manuel Silverio da Silva Costa, Peter B. Key, Antony Rowstron
  • Practical network node coordinate estimation
    Publication number: 20040109417
    Abstract: Substantially accurate estimation of coordinates of a subject network node in a coordinate space is accomplished by considering designated coordinates of other positioned nodes within the network. The designation of coordinates in the coordinate space to such nodes allows the computation of predicted coordinate distances between two network nodes based on the coordinates. By optimizing the network distance errors between measured distances and predicted coordinate distances, the predicted coordinates of a subject node joining the network can be iteratively refined. With these estimated coordinates, the coordinate distance between two points in the space may be computed as a prediction of the network distance between the two corresponding nodes. Furthermore, coordinate-based coordinate estimation lends itself to security precautions to protect against malicious reference nodes or external interference.
    Type: Application
    Filed: June 4, 2003
    Publication date: June 10, 2004
    Applicant: MICROSOFT CORPORATION
    Inventors: Miguel Oom Temudo de Castro, Manuel Silverio da Silva Costa, Peter B. Key, Antony Rowstron