Efficiently embedding information onto a keyboard membrane
US8477049B2 · kind B2 · utility
0Cited by
7References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 5, 2009 |
| Grant date | Jul 2, 2013 |
| Priority date | — |
| Expiry date | Feb 2, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M11/02
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.