Patents by Inventor Srinavasan K. Ganapathi

Srinavasan K. Ganapathi 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 apparatus for pressure sensing
    Patent number: 6829950
    Abstract: The present invention provides a pressure based fingerprint image capture device that includes an array of cantilevers or simply suspended bridges, with each pressure based sensor having a cantilever or a simply suspended bridge in contact with a conducting electrode that deforms under the load applied by the localized ridge on the fingerprint, and which provides contact to another conducting electrode thereby closing the electrical circuit, a switch in the simplest form, and providing a “pulse” response from the sensor. In the quiescent state, each cantilever or simply suspended bridge structure contains an upper electrode which forms one part of the switch, while another conducting layer, the lower electrode at the bottom of the well of the individual sensor, forms the other part of the switch.
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: December 14, 2004
    Assignee: Fidelica Microsystems, Inc.
    Inventors: Srinavasan K. Ganapathi, Randolph S. Gluck, Steven H. Hovey, Shiva Prakash
  • Method and apparatus for pressure sensing
    Patent number: 6578436
    Abstract: The present invention provides a pressure based fingerprint image capture device that includes an array of cantilevers or simply suspended bridges, with each pressure based sensor having a cantilever or a simply suspended bridge in contact with a conducting electrode that deforms under the load applied by the localized ridge on the fingerprint, and which provides contact to another conducting electrode thereby closing the electrical circuit, a switch in the simplest form, and providing a “pulse” response from the sensor. In the quiescent state, each cantilever or simply suspended bridge structure contains an upper electrode which forms one part of the switch, while another conducting layer, the lower electrode at the bottom of the well of the individual sensor, forms the other part of the switch.
    Type: Grant
    Filed: May 16, 2000
    Date of Patent: June 17, 2003
    Assignee: Fidelica Microsystems, Inc.
    Inventors: Srinavasan K. Ganapathi, Randolph S. Gluck, Steven H. Hovey, Shiva Prakash
  • Method and apparatus for pressure sensing
    Publication number: 20020166388
    Abstract: The present invention provides a pressure based fingerprint image capture device that includes an array of cantilevers or simply suspended bridges, with each pressure based sensor having a cantilever or a simply suspended bridge in contact with a conducting electrode that deforms under the load applied by the localized ridge on the fingerprint, and which provides contact to another conducting electrode thereby closing the electrical circuit, a switch in the simplest form, and providing a “pulse” response from the sensor. In the quiescent state, each cantilever or simply suspended bridge structure contains an upper electrode which forms one part of the switch, while another conducting layer, the lower electrode at the bottom of the well of the individual sensor, forms the other part of the switch.
    Type: Application
    Filed: May 14, 2002
    Publication date: November 14, 2002
    Applicant: Fidelica Microsystems, Inc.
    Inventors: Srinavasan K. Ganapathi, Randolph S. Gluck, Steven H. Hovey, Shiva Prakash