System for integrating pointing functions into computer keyboard

Details System for integrating pointing functions into computer keyboard System for integrating pointing functions into computer keyboard

1990-06-28

1993-12-07

Anderson, Lawrence E.

Coded data generation or conversion

Digital code to digital code converters

Tree structure

341 22, 364234, 3642368, 3642372, 345168, G06F 302

Patent

active

052690040

ABSTRACT:
A device providing pointing device functions in a keyboard without requiring the keyboard operator to remove any fingertip from the keys. A computer keyboard keyswitch mounting plate is supported for horizontal displacement against a resistive force. A transducer for measuring the force exerted in the plane of the keyboard key tops is attached between the keyboard case and the keyswitch mounting plate. The direction and magnitude of the force can be measured and encoded so they may be used to emulate the signals generated by a pointing device. The operator may elect a pointing device mode by merely applying sufficient force along the plane of the surface of the key tops, thus switching from a keyboard mode to a pointing device mode, without moving the fingers from a typing position.

REFERENCES:
patent: 4357646 (1982-11-01), McVey et al.
patent: 4680577 (1987-07-01), Straayer et al.
patent: 4826123 (1989-05-01), Hannah et al.
patent: 4857840 (1989-08-01), Lanchais
patent: 4899137 (1990-02-01), Behrens et al.
patent: 5034740 (1991-07-01), Acher
patent: 5036743 (1991-08-01), Yamaguchi et al.
patent: 5124689 (1992-06-01), Franz et al.

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