Multi bar encoding apparatus utilizing acoustic energy

Details Multi bar encoding apparatus utilizing acoustic energy Multi bar encoding apparatus utilizing acoustic energy

1978-04-03

1981-03-24

Caldwell, Sr., John W.

Communications: electrical

Audible indication

Percussion-type sound producer

178 17C, 340365S, 400479, G06F 302, H04L 1503

Patent

active

042583560

ABSTRACT:
An encoding apparatus in which strikers actuated by the keys of a keyboard, for example, impact selected ones of a group of parallel bars (equivalent to sonic delay lines) at points substantially equally distant from single transducers located on each bar. A timer controls transfer of data signals--the transducer output of the bars--to a display, a printer, etc. The transfer includes storage in a multibit electronic latch.

REFERENCES:
patent: 1953066 (1934-04-01), Griffith
patent: 3234331 (1966-02-01), Holstein
patent: 3603983 (1971-09-01), Mitchell
patent: 3725908 (1973-04-01), Brisebarre
IBM Technical Disclosure Bulletin, vol. 14, No. 10, Mar. 1972, L. Arosenius, "Ripple-Sensing Keyboard".

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