Selection switching apparatus

Details Selection switching apparatus Selection switching apparatus

1978-06-05

1981-07-28

Yusko, Donald J.

Communications: electrical

Digital comparator systems

179 1SW, 179 1B, H04Q 900

Patent

active

042813140

ABSTRACT:
Apparatus for selectively interconnecting different pieces of audio electrical equipment, such as an amplifier and a tuner, for the purpose of demonstrating the same to a potential purchaser. Units to be demonstrated are connected to different address-assigned ports in the apparatus, and a keyboard is operated to address the particular ports for the units desired to be connected. The apparatus includes an electronic memory which stores the addresses of the addressed ports, and which then effects a connection between such ports.

REFERENCES:
patent: 3626097 (1971-12-01), Bloom et al.
patent: 3688262 (1972-08-01), Liguori
patent: 3922641 (1975-11-01), Gates, Jr.
patent: 4024345 (1977-05-01), Kochem
patent: 4057711 (1977-11-01), Asthana et al.
patent: 4176251 (1979-11-01), Odlen et al.

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