Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1975-04-16
1977-05-03
Sloyan, Thomas J.
Communications: electrical
Audible indication
Percussion-type sound producer
179 15AV, 340347M, H03K 1301
Patent
active
040218007
ABSTRACT:
A non-linear coder for use in a time-division multiplex pulse code modulation telephone transmission system is disclosed. Non-linear coding is accomplished by the selection of each segment that is necessary for coding by control pulses in accordance with the magnitude of an analog input signal. This is implemented in the feedback loop of the non-linear coder logic which selects among switching circuits in a local decoder a desired group of switching circuits in response to the input analog level.
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CCITT Recommendation G.711 (White Book, Mar del Plata, 1968).
Katagiri Yoshio
Suda Ryuichi
Nippon Electric Company Ltd.
Sloyan Thomas J.
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