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NRZI$505046$ - translation to English

A LINE CODE

4b5b; 4B/5B-NRZI; 4B-5B; 4B/5B; 4b/5b encoding

NRZI

NRZI, Non-Return-to-Zero Inverted, Datenspeichermethode bei der 0 Bits durch eine Signaländerung und 1 Bit duch keine Änderung gekennzeichnet ist (Computer)

Non-Return-to-Zero Inverted

LINE CODE IN WHICH THE SIGNAL VALUE DOES NOT RETURN TO ZERO AFTER EACH PULSE

Non-return-to-zero, inverted; NRZI; Non return to zero; Non return to zero, inverted; Non-return-to-zero space; Nrz-l; Polar encoding; NRZ encoding; NRZ-L; NRZ-I; NRZS; NRZM; NRZL; Non-Return-to-Zero; Non-Return-to-Zero Inverted; Non-return to zero; NRZI-S; SNRZI; Synchronized NRZI; Randomized NRZ; Randomized NRZI; RNRZI; RNRZ; Randomised NRZI; Randomised NRZ; Synchronised NRZI; NRZ-S; NRZ-M; NRZ(M); NRZ(S); NRZ(I); NRZ(L); NRZ-C; NRZC; NRZ(C); Inhibit code; IBM code; Non-Return to Zero; Non-Return to Zero Inverting; Non-return to zero inverting; Non-return-to-zero inverting; Non-return-to-zero-inverting

Non-Return-to-Zero Inverted, NRZI, zweiwertiges Kodierverfahren in dem das Signal seinen Zustand bei einer eins ändert und bei einer Null seinen Zustand nicht ändert (Computer)

Definition

NRZI

Non Return to Zero Inverted

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Wikipedia

4B5B

In telecommunication, 4B5B is a form of data communications line code. 4B5B maps groups of 4 bits of data onto groups of 5 bits for transmission. These 5-bit words are pre-determined in a dictionary and they are chosen to ensure that there will be sufficient transitions in the line state to produce a self-clocking signal. A collateral effect of the code is that 25% more bits are needed to send the same information.

An alternative to using 4B5B coding is to use a scrambler. Some systems use scramblers in conjunction with 4B5B coding to assure DC balance and improve electromagnetic compatibility.

Depending on the standard or specification of interest, there may be several 5-bit output codes left unused. The presence of any of the unused codes in the data stream can be used as an indication that there is a fault somewhere in the link. Therefore, the unused codes can be used to detect errors in the data stream.

https://en.wikipedia.org/wiki/4B5B