| 摘要 |
PROBLEM TO BE SOLVED: To provide an input device easily operable even when not directly contacted with the device. SOLUTION: The input device for receiving key input by user operation includes: key region parts which are at least a part of a surface of the device, each emit light, and are a plurality of regions to which keys are assigned respectively; a distance sensor part for detecting a distance to an object in the vertical direction with respect to the respective regions; a key input control part for outputting information displaying input of the keys assigned to regions when the distance sensor part detects an object approaching within a first distance of the region; and a light emission control part for, when the distance sensor part detects an object approaching within a second distance larger than the first distance with respect to the region, controlling the key region parts so that light is emitted in the region. COPYRIGHT: (C)2009,JPO&INPIT
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