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US 8,665,232 B2Granted
Device and method for acquiring tactile information with sequential scanning
AssigneeStantum
InventorsPascal Joguet, Guillaume Largillier
Life of this patent
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Abstract
A device configured to acquire tactile information including 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.
Claims10
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, and
- the 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.
3 more elements
A method for acquiring tactile information from a transparent tactile matrix sensor having rows and columns of conductive stripes and a scanning control unit, comprising:
- supplying successively a signal to each column;
- and
- measuring sequentially a signal level for each row during said step of supplying of the signal for each of the columns to read out the tactile information,
- wherein the step of measuring sequentially includes:
- comparing, in a digitally controlled comparator, the signal level of each row to
- a threshold level to detect the tactile information, and
- changing the threshold level for each measurement of the signal level of a corresponding row by decreasing the threshold level from measurement to measurement of neighboring rows.
4 more elements
Dependencies are inferred from the claim text.