NRZI

E96090

digital encoding scheme line code

NRZI (Non-Return-to-Zero Inverted) is a digital line coding scheme that represents binary data by inverting the signal level on a '1' and leaving it unchanged on a '0', commonly used in various networking and storage technologies.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (3)

Label	Occurrences
NRZI canonical	1
Non-Return-to-Zero Invert-on-ones	1
Non-Return-to-Zero Inverted	1

How this entity was disambiguated

This entity first appeared as the object of triple T812687 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: NRZI
Context triple: [100BASE-FX, usesLineCode, NRZI]

A. Manchester encoding
Manchester encoding is a digital line code that represents each data bit with a transition in the middle of the bit period, providing both clock and data synchronization on the same signal.
B. CRC
CRC is the widely ratified United Nations human rights treaty that sets out the civil, political, economic, social, and cultural rights of all children.
C. NUL
NUL is a historic civil rights and urban advocacy organization in the United States focused on economic empowerment, equality, and social justice for African Americans and other underserved communities.
D. NMTI
NMTI is a prestigious United States presidential award that honors individuals, teams, and companies for outstanding contributions to technological innovation and advancement.
E. NMTI
NMTI is an acronym whose specific meaning depends on context, commonly referring to various technical or institutional names.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: NRZI
Target entity description: NRZI (Non-Return-to-Zero Inverted) is a digital line coding scheme that represents binary data by inverting the signal level on a '1' and leaving it unchanged on a '0', commonly used in various networking and storage technologies.

A. Manchester encoding
Manchester encoding is a digital line code that represents each data bit with a transition in the middle of the bit period, providing both clock and data synchronization on the same signal.
B. CRC
CRC is the widely ratified United Nations human rights treaty that sets out the civil, political, economic, social, and cultural rights of all children.
C. NUL
NUL is a historic civil rights and urban advocacy organization in the United States focused on economic empowerment, equality, and social justice for African Americans and other underserved communities.
D. NMTI
NMTI is a prestigious United States presidential award that honors individuals, teams, and companies for outstanding contributions to technological innovation and advancement.
E. NMTI
NMTI is an acronym whose specific meaning depends on context, commonly referring to various technical or institutional names.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	digital encoding scheme ⓘ line code ⓘ
advantage	improves clock recovery when data has sufficient ones density ⓘ reduces DC component compared to NRZ-L for random data ⓘ robust against polarity inversion of the physical medium ⓘ
alsoKnownAs	NRZ-I ⓘ Non-Return-to-Zero Invert-on-ones ⓘ linked to: NRZI
applicationDomain	computer storage ⓘ data communications ⓘ telecommunications ⓘ
belongsToClass	non-return-to-zero codes ⓘ
bitRepresentation	logical 0 leaves current signal state unchanged ⓘ logical 1 causes inversion of current signal state ⓘ
category	physical layer coding ⓘ
dependsOn	signal transitions rather than absolute levels ⓘ
disadvantage	long runs of zeros produce no transitions ⓘ requires additional mechanisms to ensure sufficient transitions ⓘ
encodingRule	a binary 0 is represented by no transition of the signal level ⓘ a binary 1 is represented by a transition of the signal level ⓘ
fullName	Non-Return-to-Zero Inverted ⓘ linked to: NRZI
goal	efficient binary data transmission over physical media ⓘ improve timing recovery compared to simple NRZ level coding ⓘ
hasProperty	self-clocking only if data pattern has enough ones ⓘ transition occurs at bit boundaries only ⓘ two possible signal levels ⓘ
isDifferential	true ⓘ
relatedTo	Manchester code ⓘ linked to: Manchester encoding NRZ-L ⓘ RLL (run-length limited) codes ⓘ biphase mark code ⓘ linked to: Manchester encoding
requires	bit stuffing or run-length limiting for long sequences without transitions ⓘ
signalProperty	signal level does not return to a zero baseline between bits ⓘ
standardizedIn	USB 2.0 specification ⓘ various magnetic recording standards ⓘ
usedIn	HDLC-like protocols with bit stuffing ⓘ High-Speed USB with bit stuffing ⓘ SCSI parallel interfaces (legacy) ⓘ USB 1.x ⓘ linked to: USB USB 2.0 full-speed ⓘ USB 2.0 low-speed ⓘ fiber channel variants (as a component of higher-level coding) ⓘ magnetic tape recording ⓘ older floppy disk formats ⓘ optical communication systems ⓘ serial communication links ⓘ
usedWith	bipolar signaling ⓘ differential signaling ⓘ unipolar signaling ⓘ

How these facts were elicited

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

100BASE-FX → usesLineCode → NRZI ⓘ

NRZI → fullName → Non-Return-to-Zero Inverted ⓘ

linked to: NRZI

NRZI → alsoKnownAs → Non-Return-to-Zero Invert-on-ones ⓘ