Touch responsive keyboard apparatus

Details Touch responsive keyboard apparatus Touch responsive keyboard apparatus

1974-12-24

1976-08-03

Habecker, Thomas B.

Communications: electrical

Audible indication

Percussion-type sound producer

340365C, 3401461AG, G08C 100

Patent

active

039732550

ABSTRACT:
A keyboard apparatus for utilizing equipments, such as electronic musical instruments, computers, and other control and data handling devices, which responds to imposition of a flexible conductive element, such as the operator's finger, on a selected one of a plurality of areas to produce a representation for a character or function corresponding to the selected area. This apparatus consists of a plurality of conductors exposed in different combinations in different areas and a set of logic circuits which discriminately gate the conductors to utilizing equipment when proper combinations are energized. Several conductor arrangements with combinations all sharing one or more unique characteristics are disclosed, along with different logic systems responsive to the characteristics to assure that erroneous information will not be read in. Also disclosed is apparatus to produce an audible sound each time a read in is made and thereby indicate to the operator when the keyboard has responded.

REFERENCES:
patent: 3588875 (1971-06-01), Gabor
patent: 3627935 (1971-12-01), Spievak
patent: 3676615 (1972-07-01), Wiedmer
patent: 3778817 (1973-12-01), Silverberg

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