Modular switching system

Details Modular switching system Modular switching system

1978-05-15

1979-11-27

Brown, Thomas W.

179 1B, H04Q 500

Patent

active

041762517

ABSTRACT:
A modular switching system including a plurality of switch modules connected in cascade. Each module includes a portion of a signal bus, terminals for connection of an external device, switch means for connecting the external device to the signal bus and an addressable logic circuit. An external device can be connected to the signal bus by providing to the logic circuit cascade a number of address pulses corresponding to the position in the cascade of the selected external device. By providing a number of such cascades an entire system, for example an audio system, can be formed. The system can be expanded simply by connecting additional switch modules to each or any cascade and an external device connected thereto is automatically addressable according to its position in the cascade.

REFERENCES:
patent: 3199226 (1965-08-01), Joslow
patent: 3806658 (1974-04-01), Anderson et al.
patent: 3920906 (1975-11-01), Gargini

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