Portable computer keyboard

Details Portable computer keyboard Portable computer keyboard

1992-07-10

1995-04-25

Peng, John K.

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

345168, H03K 1794

Patent

active

054103053

ABSTRACT:
Disclosed is a portable computer keyboard capable of operation in three distinct modes: stand-alone mode, automatic mode and a conventional mode. In stand-alone mode, information entered is stored in an on-board memory buffer, and may be edited by using a set of predetermined editing keys in conjunction with a display mounted on the device. In automatic mode, the contents of the on-board memory buffer are transmitted, by a keystroke emulation technique, to an attached host computer via a conventional keyboard connector cable. In the conventional keyboard mode, keystrokes entered are transmitted directly to an attached host computer. Also disclosed is a power conservation technique where the device enters a dwell or sleep mode when waiting to process keystrokes.

REFERENCES:
patent: 3942157 (1976-03-01), Azure
patent: 4016542 (1977-04-01), Azure
patent: 4527250 (1985-07-01), Galdun et al.
patent: 5177371 (1993-01-01), Faulk
patent: 5230074 (1993-07-01), Canova, Jr. et al.

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