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Device and method for transmitting shape information of image through tactile sensation using rheological fluid

  • US 7,777,137 B2
  • Filed: 02/05/2007
  • Issued: 08/17/2010
  • Est. Priority Date: 03/13/2006
  • Status: Expired due to Fees
First Claim
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1. A tactile transmission device for transmitting shape information of an image using a rheological fluid, which is constructed to transmit shape information of various images displayed on a screen to a user so that the user feels the shape information through tactile sensation, the tactile transmission device comprising:

  • a plurality of cells arranged at regular intervals, and each having a storage space therein;

    a contact member installed in each of the cells, an upper portion of the contact member protruding out of the cell;

    an elastic member installed in each of the cells, and biasing the contact member upwards;

    a sensor installed in each of the cells, and measuring displacement of the contact member;

    a magneto-rheological fluid contained in each of the cells;

    a coil installed in each of the cells and adapted to generate a magnetic field in the cell; and

    a control means comparing a shape information value of the image with a displacement value of the contact member output from the sensor, thus controlling a quantity of current applied to the coil.

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