Decoder with bipolar-hyperbolic companding characteristics

摘要

1,073,547. Selective signalling. NIPPON ELECTRIC CO. Ltd. March 12, 1965 [March 12, 1964], No. 10573/65. Heading G4H. A non-linear digital-to-analogue converter comprises a transistorized constant current source passing current through two parallel branches, one comprising a resistance network variable linearly in accordance with the digital input signal and the second a constant impedance and an output device connected in series.