Combination keyboard including plural stroke keys and plural touch keys
First Claim
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1. An input device comprising:
- a flexible printed circuit (FPC) board having a common circuit matrix with plural columns and plural rows of electric contacts;
plurality of stoke keys and plurality of touch keys disposed on said common circuit matrix of said FPC board;
key scan control means for key scanning while delivering scan signals sequentially in each row or each column of said circuit matrix;
plurality of first counting means each of which corresponds to a respective stroke key for counting the results of key scanning effected by said key scan control means in a first specified mode for said respective stroke key;
plurality of second counting means each of which corresponds to a respective touch key for counting the results of key scanning effected by said key scan control means in a second specified mode for said respective touch key;
first judging means responsive to said first counting means for determining an ON action of respective stroke key when said respective first counting means has reached a first specified count number; and
second judging means responsive to second counting means for determining an ON action of a touch key when said respective second counting means has reached a second specified count number greater than said first specified count number.
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Abstract
Disclosed is an input device or keyboard for inputting into an electronic appliance, comprising stroke keys and touch keys disposed on a common circuit matrix of a flexible printed circuit board. Preferably, data inputting keys such as character keys are composed of stroke keys and function keys for inputting command signals are composed of touch keys. In order to judge precisely ON/OFF actions of stroke keys and touch keys, key scanning control applied commonly to these keys is provided.
28 Citations
8 Claims
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1. An input device comprising:
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a flexible printed circuit (FPC) board having a common circuit matrix with plural columns and plural rows of electric contacts; plurality of stoke keys and plurality of touch keys disposed on said common circuit matrix of said FPC board; key scan control means for key scanning while delivering scan signals sequentially in each row or each column of said circuit matrix; plurality of first counting means each of which corresponds to a respective stroke key for counting the results of key scanning effected by said key scan control means in a first specified mode for said respective stroke key; plurality of second counting means each of which corresponds to a respective touch key for counting the results of key scanning effected by said key scan control means in a second specified mode for said respective touch key; first judging means responsive to said first counting means for determining an ON action of respective stroke key when said respective first counting means has reached a first specified count number; and second judging means responsive to second counting means for determining an ON action of a touch key when said respective second counting means has reached a second specified count number greater than said first specified count number. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification