H - Electricity – 04 – B
Patent
H - Electricity
04
B
354/68
H04B 14/06 (2006.01)
Patent
CA 1054719
CIRCUIT FOR CURTAILING EFFECTS OF BIT ERRORS IN PULSE CODED TRANSMISSION Abstract of the Disclosure A differentially pulse coded digital representation of a continuous analog signal is digitally accumulated, and each time polarity information indicates that the accumulated digital approximation changes sign the digital representation is complemented. The result of this action is that each bit of a predetermined type in the digital representation, and following the complementing point in a signal flow sense, has the same directional effect, on the digital accumulation, with respect to a predetermined signal reference level within the range of the continuous analog signal variation. Several embodiments are shown with different types of digital accumulation and different circuit locations for realizing the inversion of the digital representation.
223151
Na
Western Electric Company Incorporated
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