Analogue to digital converters

Details Analogue to digital converters Analogue to digital converters

1979-11-23

1981-09-08

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

370 6, 340347AD, H03K 1301, H04B 1202

Patent

active

042888735

ABSTRACT:
A p.c.m. encoder comprises a high accuracy linear A/D converter followed by a digital high pass filter, a d.c. offset circuit and a digital compressor. The high pass filter removes any d.c. offset from the encoded signal and the offset circuit then reintroduces a controlled amount of d.c. offset. By this means the performance can be improved especially in regard to idle noise and crosstalk enhancement.

REFERENCES:
patent: 3872466 (1975-03-01), Wold
patent: 3904963 (1975-09-01), Bellanger
patent: 3949170 (1976-04-01), Shionoya
patent: 3973209 (1976-08-01), Nossen

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