Operation direction judging method for operation key in direction detecting switch
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United States of America Patent
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May 3, 2011
Grant Date -
Jul 17, 2008
app pub date -
Dec 22, 2005
filing date -
Dec 27, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An object of the present invention is to provide a directionality judging method for an operation key in a direction detecting switch, capable of detecting a key operation in any direction; and superior as the cursor can be freely moved by one operation key.The present invention is a directionality judging method for an operation key comprising; wherein an initial value is set whose unit is a minimum division region as a criterion for specifying the operation direction of the operation key from the input signal, and a position of the operation key at a time when it is pressed is detected from the input signal and the operation direction is stored in a memory; and next, an effective operation range comprising the plurality of regions of minimum division regions including the operation direction of the operation key is set in a controller; an operation of the operation key whose state is in the effective operation range is judged to be the same direction; and for an operation at a position at which the operation key deviates from the effective operation range, a new operation direction at the deviating position and an effective operation range are set.
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