Byte oriented DC balanced (0,4) 8B/10B partitioned block transmi

Details Byte oriented DC balanced (0,4) 8B/10B partitioned block transmi Byte oriented DC balanced (0,4) 8B/10B partitioned block transmi

1982-06-30

1984-12-04

Miller, C. D.

Communications: electrical

Audible indication

Percussion-type sound producer

H03K 1300

Patent

active

044867395

ABSTRACT:
A binary DC balanced code and an encoder circuit for effecting same is described, which translates an 8 bit byte of information into 10 binary digits for transmission over electromagnetic or optical transmission lines subject to timing and low frequency constraints. The significance of this code is that it combines a low circuit count for implementation with excellent performance near the theoretical limits, when measured with the commonly accepted criteria. The 8B/10B coder is partitioned into a 5B/6B plus a 3B/4B coder. The input code points are assigned to the output code points so the number of bit changes required for translation is minimized and can be grouped into a few classes.

REFERENCES:
patent: 3577142 (1971-05-01), McMillin
patent: 3594560 (1971-07-01), Stanley
patent: 3798635 (1974-03-01), Candiani
patent: 4309694 (1982-01-01), Henry
T. Horiguchi and K. Morita, "An Optimization of Modulation Codes in Digital Recording," in IEEE Transactions on Magnetics, vol. MAG-12, No. 6, Nov. 1976, pp. 740-742.
R. G. Kiwimagi, "Encoding/Decoding for Magnetic Record Storage Apparatus," IBM Technical Disclosure Bulletin, vol. 18, No. 10, Mar. 1976, pp. 3147-3149.
"Binary Code Suitable for Line Transmission," in Electronics Letters, Feb. 20th 1969, vol. 5, No. 4, pp. 79-81.
W. W. Peterson et al., "Cyclic Codes for Error Detection," Proceedings IRE, vol. 49, pp. 228-235, Jan. 1961, Theorem 8.
John F. Wakerly, "Documentation Standards Clarify Design," Computer Design, Feb. 1977, pp. 75-85.

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