发明名称 |
Efficiently embedding information onto a keyboard membrane |
摘要 |
Methods and systems for efficiently embedding information in a keyboard membrane. Information can be embedded in the keyboard membrane by integrating an information embedding circuit with a switch matrix used to identify location of a key press event. The information is embedded by either hardwiring a column to a selected row, or a row to a selected column. In order to access the embedded information, the row (column) is asserted resulting in the hardwired column (row) to also be asserted. The identification of the asserted column (row) is used to point to the embedded information.
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申请公布号 |
US8477049(B2) |
申请公布日期 |
2013.07.02 |
申请号 |
US20090479631 |
申请日期 |
2009.06.05 |
申请人 |
TAN LI-QUAN;WELCH HAROLD J.;LOW WING KONG;BRONSTEIN CHAD;APPLE INC. |
发明人 |
TAN LI-QUAN;WELCH HAROLD J.;LOW WING KONG;BRONSTEIN CHAD |
分类号 |
H03K17/94 |
主分类号 |
H03K17/94 |
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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