Increasing the Number of Keys Supported by a Keyboard Controller
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United States of America Patent
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N/A
Issued Date -
Jan 22, 2009
app pub date -
Jul 16, 2007
filing date -
Jul 16, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An enhanced keyboard for controlling a device, including: a keypad with a plurality of depressible keys; a controller with a pre-designed integer number of output lines (J) and a pre-designed integer number of input lines (K); a printed circuit with switch mechanisms that are adapted to enable an electronic signal to pass from a specific output line of the controller to a specific input line of the controller responsive to depressing a specific key of the keypad; and one or more additional switch mechanisms that are adapted to enable an electronic signal to pass from a specific output line of the controller to at least two specific input lines of the controller responsive to depressing a specific key of the keypad.
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