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US 2011/0285551 A1Published application
Keyboard
AssigneesHon Hai Precision Industry Co., Ltd., HONG FU JIN HAI PRECISION INDUSTRY(ShenZhen) CO., LTD.
InventorsDan Xu, Song-Lin Tong
Life of this patent
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Abstract
A keyboard includes a number of first keys, a control circuit, a switch circuit, and a second key. The switch circuit includes a number of switches. The second key is connected to first terminals of two switches of the switch circuit via the control circuit. A second terminal of each of the switches is connected to a first key. When a second key is pressed, the control circuit controls the switches corresponding to the pressed second key to be turned on, to activate the first keys which are connected to the switches.
Claims8
A keyboard comprising:
- a plurality of first keys;
- a control circuit;
- a switch circuit comprising a plurality of electronic switches;
- and
- at least one second key, wherein each second key is connected to first terminals of at least two switches of the switch circuit via the control circuit, a second terminal of each electronic switch of the switch circuit is connected to a corresponding first key;
- wherein when the at least one second key is pressed, the control circuit controls the electronic switches corresponding to the pressed second key to be turned on, to start the first keys which are connected to the electronic switches.
3 more elements
Dependencies are inferred from the claim text.