Magnetic bubble signal generator

Details Magnetic bubble signal generator Magnetic bubble signal generator

1974-05-30

1977-03-01

Moffitt, James W.

Communications: electrical

Digital comparator systems

179 90BB, G11C 1114, H04M 146

Patent

active

040104540

ABSTRACT:
A magnetic memory including a number of magnetic bubble recirculating loops and a common channel controls the frequency of signals generated by flip-flops connected to a bubble detector in the common channel. A choice of two-out-of-seven loops for bubble storage permits the control of the flip-flops in a manner to provide a multi-frequency output useful for TOUCH-TONE telephone dialing operation.

REFERENCES:
patent: 3812480 (1974-05-01), Kish et al.
patent: 3820092 (1974-06-01), Bobeck et al.
patent: 3879585 (1975-04-01), Bobeck et al.
patent: 3895363 (1975-07-01), Braginski

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