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Eight-to-fourteen modulation

Eight-to-fourteen modulation (EFM) is a data encoding technique – formally, a line code – used by compact discs (CD), laserdiscs (LD) and pre-Hi-MD MiniDiscs. EFMPlus is a related code, used in DVDs and Super Audio CDs (SACDs).

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Explore the main themes, entities and connections around Eight-to-fourteen modulation. Start with the topic map, then use the sections below for research and deeper semantic analysis.

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Overview

Line code
Compact discs Compact disc
Laserdiscs Laserdisc
Hi-MD
MiniDiscs MiniDisc
EFMPlus Eight-to-fourteen modulation
DVDs DVD
Super Audio CDs Super Audio CD
Kees A. Schouhamer Immink Kees Schouhamer Immink
European Patent Office
Benoît Battistelli

Technological classification

DC DC bias
Run-length limited
Power density function Spectral density
Servo mechanisms Servomechanism

How it works

Lookup table
NRZI encoding Non-return-to-zero, inverted
Modulo Modulo operation
Clock recovery
DC balance

EFMPlus

Deterministic finite automaton

Advanced semantic analysis

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Map overview Semantic statistics

Eight-to-fourteen modulation

Nodes26

Edges25

Triples6

Avg. degree1.92

Density0.076923

Components1

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Eight-to-fourteen modulation

Top relations

related to External links · 6

Eight-to-fourteen modulation → CD-ROM, DVD-ROM, EFM, EFMPlus, Eight-to-Fourteen Modulation Conversion TableECMA-130, Related

Important terminology Word statistics

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Important terminology

efm efmplus sequence two used consecutive bits data code maximum three disc ones zeros codewords dvds sacds encoded minimum eight-bit

Entity relationships Subject–Predicate–Object triples

Subject	Predicate	Object	Confidence	Src
Eight-to-fourteen modulation	related to External links	Related	0.60	section
Eight-to-fourteen modulation	related to External links	Eight-to-Fourteen Modulation Conversion TableECMA-130	0.60	section
Eight-to-fourteen modulation	related to External links	CD-ROM	0.60	section
Eight-to-fourteen modulation	related to External links	EFM	0.60	section
Eight-to-fourteen modulation	related to External links	DVD-ROM	0.60	section
Eight-to-fourteen modulation	related to External links	EFMPlus	0.60	section

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Min side: 3

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