Invention Grant
- Patent Title: Efficiently embedding information onto a keyboard membrane
- Patent Title (中): 有效地将信息嵌入到键盘膜上
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Application No.: US12479631Application Date: 2009-06-05
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Publication No.: US08477049B2Publication Date: 2013-07-02
- Inventor: Li-Quan Tan , Harold J. Welch , Wing Kong Low , Chad Bronstein
- Applicant: Li-Quan Tan , Harold J. Welch , Wing Kong Low , Chad Bronstein
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Dorsey & Whitney LLP
- Main IPC: H03K17/94
- IPC: H03K17/94

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.
Public/Granted literature
- US20100309029A1 EFFICIENTLY EMBEDDING INFORMATION ONTO A KEYBOARD MEMBRANE Public/Granted day:2010-12-09
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