Patent ID: 8766155
Filing Date: 2014-07-01
Classification: G06F

Abstract:
1. A coordinate recognizing apparatus comprising: plural light emitting elements; plural light receiving elements arranged to be opposed to the respective light emitting elements and configured to output detection signals corresponding to intensity of received light; a memory configured to store, concerning plural pairs of the light emitting elements and the light receiving elements set in advance, reference values used for determination of blocking of a light path; and a controller configured to perform, concerning the respective pairs, actions for collecting, plural times, a difference between first intensity indicated by the detection signal output from the light receiving element, which is a pair of the light emitting element, in a state in which the light emitting element is caused to emit light and second intensity indicated by a detection signal output from the light receiving element during non-light emission of the light emitting element and updating the reference value of the pair stored in the memory using a minimum of differences collected plural times.