Keyboard system capable of allowing single-hand input operation

Details Keyboard system capable of allowing single-hand input operation Keyboard system capable of allowing single-hand input operation

1994-01-07

1996-01-23

Peng, John K.

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

341 20, 341 26, 36470914, 36470912, H03K 1794, G06F 300

Patent

active

054868238

ABSTRACT:
According to this invention, a keyboard is constituted by 15 keys, and 4-bit data is sent to a keyboard controller in response to depression of a key. The keyboard controller detects the permutation of two continuously depressed keys. A key code is picked on the basis of the permutation with reference to a table stored in advance, and is sent to a system main body. The keyboard controller updates the table to another table in response to depression of a specific key.

REFERENCES:
patent: 3967273 (1976-06-01), Knowlton
patent: 4307266 (1981-12-01), Messina
patent: 4427848 (1984-01-01), Tsakanikas
patent: 4608457 (1986-08-01), Fowler et al.
patent: 4650927 (1987-03-01), James
patent: 5117455 (1992-05-01), Danish

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