Keyboard apparatus and method

Details Keyboard apparatus and method Keyboard apparatus and method

1987-02-12

1989-05-23

Caldwell, Sr., John W.

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

400482, 400489, H01H 304

Patent

active

048334464

ABSTRACT:
A chordic keyboard including chordic data entry locations corresponding to the five fingers of the human hand and correlation apparatus for correlating a set of chordic data entry location engagement combinations to a set of letters in accordance with a code which is characterized in that available data entry location engagement combinations are arranged in a plurality of groups, the engagement combinations in each group having a predetermined relationship among their fingering patterns, each group being matched with letters forming a recognizable combination of letters, whereby the fingering patterns are readily memorizable.

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patent: 4081068 (1978-03-01), Zapp
patent: 4244659 (1981-01-01), Malt
patent: 4263582 (1981-04-01), Dumbovic
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Technical Paper 249, Sidorsky, U.S. Army, 1974.
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IBM Technical Disclosure Bulletin, vol. 22, No. 12, May 1980, pp. 5504-5505, NY US, E. C. Bequaert "Typamatic Feature for Chord Keyboard".
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