RLL (1,7) encoder with single state bit
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United States of America Patent
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Aug 4, 1987
Issued Date -
N/A
app pub date -
Jun 23, 1986
filing date -
Jun 13, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for producing, from four consecutive unconstrained data bits in a bit string, a run-length-limited (RLL) encoded symbol consisting of three coded data bits. The internal state of the encoder is described by one state bit. The encoder performs RLL (1,7) encoding on a bit-by-bit basis, and can be cascaded in parallel to perform encoding on sequential, equally-sized groups of unencoded data bits. An attractive feature of the encoder is that it can be cascaded to simultaneously encode consecutive bytes of data.
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