Typewriting machines – Key-board or key lever-actuating mechanism – Key-board arranged according to character location
Reexamination Certificate
2006-09-12
2006-09-12
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
07104711
ABSTRACT:
A system for configuring keyboards using both frequency and alphabetical bases, as well as the resulting keyboards. The Keyboard Configuration System uses alphabetized and frequency-based sets of keys. The relevant alphabet is analyzed for letter use on a frequency basis. For maximum-fingers configurations, the frequency-ranked list is broken into rows. Letters are alphabetized horizontally within each row. For minimum-fingers configurations (Personal Digital Assistant keyboards), the frequency-ranked list is broken into columns. Letters are alphabetized vertically within each column. For dominant-fingers configurations, the frequency-ranked list is first broken into rows across six columns. These letters are alphabetized horizontally within each row. The remainder of the frequency-ranked list is then broken into columns. These letters are alphabetized vertically within each column. The resulting keyboards are then evaluated for alphabetical succession relative to the alphabetical direction. The system set forth herein may be adaptable to any written language.
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Chau Minh
Cislo & Thomas LLP
Jordan, Esq Andrew S.
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