Patent ID: 7598949

Claim:
An apparatus for displaying visual data and approximately simultaneously sensing touch information, comprising: a plurality of light emitting diodes (“LEDs”) arranged in an array as at least one of: at least one column or at least one row; a first arrangement configured to operate at least one first individual one of the LEDs within the at least one column or the at least one row to emit light; and a second arrangement configured to, approximately simultaneously with the operation of the first arrangement, operate second individual ones of the LEDs within the at least one column or the at least one row to detect the light, wherein at least one of the first arrangement or the second arrangement are capable of generating an illumination from a subset of the LEDs, wherein the second arrangement is configured to measure the light from the illumination which is at least one of reflected or scattered back, and wherein the subset comprises every second one of the LEDs in at least one of a scan row of the columns or a scan column of the rows, and the detected subset comprises the remaining ones of the LEDs.