Process for analog/digital conversion

Details Process for analog/digital conversion Process for analog/digital conversion

1976-04-26

1978-02-14

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

H03K 1320

Patent

active

040742598

ABSTRACT:
A programmable analog-to-digital conversion system having a response characteristic which may be shaped as desired by selectively supplying digital control signals to a field effect transistor which controls the charging of a timing capacitor from a constant current source. The capacitor is thus charged at a non-linear rate (determined by the programming) toward a threshold value established by the magnitude of the analog input signal. As the capacitor is being charged, a counter is incremented. When the capacitor charge reaches the threshold value, the final count is displayed by an output device.

REFERENCES:
patent: 3163849 (1964-12-01), Meyer
patent: 3435196 (1969-03-01), Schmid
patent: 3631468 (1971-12-01), Spaid

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