Typewriting machines – Key-board or key lever-actuating mechanism – Key-board arranged according to character location
Reexamination Certificate
2006-03-07
2006-03-07
Chau, Minh (Department: 2854)
Typewriting machines
Key-board or key lever-actuating mechanism
Key-board arranged according to character location
C400S489000, C400S414000
Reexamination Certificate
active
07008127
ABSTRACT:
A system for configuring keyboards using both frequency and alphabetical bases and the resulting keyboards. The Keyboard Configuration System uses alphabetized frequency-based sets of keys in rows in order to fulfill the requirement that the keyboard must provide a key for each letter of the alphabet. The relevant alphabet is analyzed for letter use on a frequency basis. The frequency-ranked list is then broken into rows according to the number of rows needed for the keyboard. The resulting keyboards are then evaluated for demerits according to alphabetical succession that is backward relative to the alphabetical direction as well as alphabetical succession that is excess forward of zero or one key columns relative to the alphabetical direction. The system set forth here may be adaptable to any written language, especially those based upon phonetic alphabets. Further embodiments include keyboards for PDAs (Personal Digital Assistants).
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Webpage for Maltorn Keyboard at http:..www.maltron.com/maltron-advantage-dual.html.
Chau Minh
Cislo & Thomas LLP
Jordan, Esq. Andrew S.
LandOfFree
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