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Device and method for acquiring tactile information with sequential scanning

  • US 8,665,232 B2
  • Filed: 01/26/2011
  • Issued: 03/04/2014
  • Est. Priority Date: 02/23/2004
  • Status: Expired due to Fees
First Claim
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1. A device configured to acquire tactile information, comprising:

  • a transparent tactile matrix sensor having rows and columns of conductive stripes; and

    a scanning control unit,wherein the scanning control unit is configured to sequentially read out tactile information from the rows and the columns of the conductive stripes of the transparent tactile matrix sensor and to successively supply a signal to each column, and to sequentially measure a signal level for each row during the supply of the signal for each of the columns to read out the tactile information, and the scanning control unit includes;

    a digitally controllable comparator configured to compare the signal level of the rows to a threshold level to detect the tactile information, andthe threshold level is changed for each measurement of the signal level of the rows by decreasing the threshold level from measurement to measurement of neighboring rows.

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