Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1974-10-15
1976-07-06
Miller, Charles D.
Communications: electrical
Audible indication
Percussion-type sound producer
3401725, 235154, G06F 300
Patent
active
039684873
ABSTRACT:
The system includes: a number of subassemblies, each containing a set of switches connectable at their pair of inputs to different sources of analog signals and containing a multiplexer/decoder having outputs connected to different switches for their selective actuation; a differential amplifier having a pair of inputs connected to the pair of outputs of all of the switches; analog/digital converter means having its input connected to the output of the amplifier and having outputs providing multi-bit digital information; and control means that provides various functions.
REFERENCES:
patent: 3418652 (1968-12-01), Brooks
patent: 3665417 (1972-05-01), Low
patent: 3702989 (1972-11-01), Provenzano
patent: 3760374 (1973-09-01), Nabi
patent: 3761889 (1973-09-01), Hallee
patent: 3813647 (1974-05-01), Loo
patent: R28221 (1974-11-01), Benghiat
Herring William M.
Walling Dennis B.
Gilkes Arthur G.
McClain William T.
Miller Charles D.
Standard Oil Company
White Claron N.
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