Common Line Codes
- AMI
- Modified AMI codes: B8ZS, B6ZS, B3ZS, HDB3
- 2B1Q
- 4B5B
- 4B3T
- 6b/8b encoding
- Hamming Code
- 8b/10b encoding
- 64b/66b encoding
- 128b/130b encoding
- Coded mark inversion (CMI)
- Conditioned Diphase
- Eight-to-Fourteen Modulation (EFM) used in Compact Disc
- EFMPlus used in DVD
- RZ — Return-to-zero
- NRZ — Non-return-to-zero
- NRZI — Non-return-to-zero, inverted
- Manchester code (also variants Differential Manchester & Biphase mark code)
- pulse-position modulation (a generalization of Manchester code)
- Miller encoding (also known as Delay encoding or Modified Frequency Modulation, and has variant Modified Miller encoding)
- MLT-3 Encoding
- Hybrid Ternary Codes
- Surround by complement (SBC)
- TC-PAM
Optical line codes:
- Carrier-Suppressed Return-to-Zero
- Alternate-Phase Return-to-Zero
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