Key-depression data input device

Details Key-depression data input device Key-depression data input device

1988-03-18

1990-04-17

Yusko, Donald J.

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

341 26, 34082579, 371 59, H03M 1100

Patent

active

049184440

ABSTRACT:
A key-depression data input device for detecting a depressed key in a plurality of keys arranged in a key matrix, the device including phantom key detection unit for detecting an occurrence of phantom key state, and

REFERENCES:
patent: 4106011 (1978-08-01), Melanson et al.
patent: 4231016 (1980-10-01), Ueda
patent: 4420744 (1983-12-01), Jesson
patent: 4661957 (1987-04-01), Okuhara
patent: 4821033 (1989-04-01), Mori et al.

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