IT1083103B - Parallel D:A converter for eight bit PCM words - has resistor weighting network and switches coupled to exclusive OR gates
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Parallel D:A converter for eight bit PCM words - has resistor weighting network and switches coupled to exclusive OR gates
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Publication number
IT1083103B
IT1083103BIT6811377AIT6811377AIT1083103BIT 1083103 BIT1083103 BIT 1083103BIT 6811377 AIT6811377 AIT 6811377AIT 6811377 AIT6811377 AIT 6811377AIT 1083103 BIT1083103 BIT 1083103B
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Priority claimed from CH611676Aexternal-prioritypatent/CH610644A5/en
Priority claimed from CH690376Aexternal-prioritypatent/CH607734A5/en
Application filed by Hasler AgfiledCriticalHasler Ag
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Publication of IT1083103BpublicationCriticalpatent/IT1083103B/en
The parallel D/A converter, for 8-bit PCM words (with sign bit, 3 bits for a binary number determining the segment of the CCITT's rule A, and 4 bits for a second binary number determining the position within the segment), has a switch (21-26) associated with each input to the resistor weighting network (R1, r2). An exclusive-OR gate (11-16) is connected to the input of each switch and by its first input to one of the PCM input terminals (B) for the second binary number. The second inputs of all these exclusive-OR gates are coupled to the sign bit input (VZ). The PCM inputs for the first binary word are connected to another circuit.
IT6811377A1976-05-171977-05-17Parallel D:A converter for eight bit PCM words - has resistor weighting network and switches coupled to exclusive OR gates
IT1083103B
(en)
CIRCUIT PROVISION FOR EXCHANGING DIGITAL SIGNALS BETWEEN USER POSITIONS OF A MULTIPLEXA TELECOMMUNICATIONS NETWORK TIME DIVISION, ESPECIALLY OF THE TYPE WITH IMPULSE CODE MODULATION