Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1976-01-05
1979-01-30
Miller, Charles D.
Communications: electrical
Audible indication
Percussion-type sound producer
H03K 13175
Patent
active
041375254
ABSTRACT:
Binary input data or analog voltages are processed in parallel paths to form a bi-level (coarse and fine) output. A binary input is parallel processed to produce an analog current output and an analog input is parallel processed to produce a binary coded output. For binary-to-analog conversion, analog multiplexing and scaling adjusts the fine current to the coarse current prior to summing into a composite analog output. An analog input is continuously available to a comparator that senses voltage levels and reference voltages to provide binary coded linear scale pulses for parallel processing into fine increments of a binary output and coarse increments of a binary output combined into a total binary coded output.
REFERENCES:
patent: 3217147 (1965-11-01), Chapman
patent: 3646548 (1972-02-01), Van Doren
patent: 3710377 (1973-01-01), Guillen
patent: 3721975 (1973-03-01), Brinkman
patent: 3789389 (1974-01-01), Lenhoff
patent: 3829853 (1974-08-01), Freedman
patent: 3846786 (1974-11-01), Brown
patent: 3891984 (1975-06-01), Kerwin
patent: 3935569 (1976-01-01), Marcel
Giles, "Electronics" Oct. 9, 1972, pp. 112-117.
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