发明名称 |
Apparatus and method for deriving electric power efficiently from a keyboard |
摘要 |
A keyboard apparatus has keys for operation by a user. The keyboard includes a first plurality of keys being coupled to electrical generator apparatus for generating electricity from their operation. A second plurality of the keys is not coupled to electrical generator apparatus. The first plurality of keys exhibits a greater average statistical frequency of usage per key than does the second plurality.
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申请公布号 |
US6491457(B2) |
申请公布日期 |
2002.12.10 |
申请号 |
US20000748946 |
申请日期 |
2000.12.27 |
申请人 |
AHMED ADEL ABDEL AZIZ |
发明人 |
AHMED ADEL ABDEL AZIZ |
分类号 |
B41J5/08;G06F3/02;(IPC1-7):B41J5/08 |
主分类号 |
B41J5/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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