Method and apparatus for compression of binary data
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United States of America Patent
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Aug 17, 2004
Grant Date -
Jan 15, 2004
app pub date -
Jul 9, 2002
filing date -
Jul 9, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention is a method and apparatus for compression of binary data. The signal is used before modulation to increase the effective transmission rate by compressing it prior to being encoded onto a magnetic tape or other storage media. The transition bits of the data have a bit period no smaller than the smallest bit period without increasing the maximum frequency. However, non-transition bits have a bit period smaller than that of the transitioning bits. Since there is at least one full bit period between any two transitions, the maximum frequency is unaffected and is used for synchronization. Noise in a transmission is masked using bit period information, and since no other transition can be valid until at least the transition bit period has passed, noise occurring before passage of the transition bit period does not result in an error.
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