Key construction method for a keyboard and the keyboard thereof
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United States of America Patent
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Feb 12, 2008
Grant Date -
Oct 28, 2004
app pub date -
Nov 8, 2003
filing date -
Apr 28, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A key constructing method for a keyboard has M scan lines*N return lines. The electrical interconnects of the M scan lines*N return lines can generate numerical electrical contacts of A.sub.1 to A.sub.M*N, while the numerical electrical contacts of {A.sub.1 to A.sub.m*N} are the electrical contact set {A}. The key constructing method for the keyboard comprises the following steps: selecting at least one or more electrical contacts from the electrical contact set {A} to create an electrical contact set {B}; creating the electrical contact set {C}, while the electrical contact set {C}=the electrical contact set {A}-the electrical contact set {B}; combining at least one electrical contact from the electrical contact set {C} with one of the electrical contacts from the electrical contact set {B} to generate an expanded key.
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