Standard keyboard supporting multimedia functions
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United States of America Patent
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Issued Date -
May 6, 2004
app pub date -
Nov 6, 2002
filing date -
Nov 6, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A standard keyboard includes a plurality of function keys having a second function hierarchy defined to support multimedia functions, and a setting key adapted to work with the function keys to form different key combinations. The function keys are electrically connected to a scan matrix inside the keyboard to enable conversion of a state flag of a micro central processing unit of the keyboard through interlocking of two keys and change of scan codes of the function keys, so that application programs obtained from database and application program interface under Windows may be used to run a selected multimedia function by manipulating the function keys and the setting key directly on the standard keyboard without the need of adding any new key thereto. And, an actual state of the switched keyboard is indicated by a light-emitting diode provided on the keyboard.
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