Efficient entry of characters from a large character set into a portable information appliance
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United States of America Patent
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Oct 28, 2003
Grant Date -
Jan 3, 2002
app pub date -
Apr 11, 2001
filing date -
Apr 11, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system for entering characters from a large character set into a small and portable information appliance such as a mobile telephone, wherein the information appliance includes a touchpad having a touch-sensitive surface, wherein the touchpad is used to enter alphanumerical data into the information appliance, wherein the characters can come from small or large character sets, and wherein characters are entered by providing a plurality of character groups, each group having a head character assigned to a specific region, and selecting a head character enables the user to cycle forwards or backwards through each of the characters within the selected character group, and selecting the desired character by raising a finger from off the touchpad surface when the desired character is found.
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