Forward link text compression in satellite messaging
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United States of America Patent
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Jun 12, 2007
Grant Date -
Sep 4, 2003
app pub date -
Jul 19, 2002
filing date -
Jul 19, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A method of transmitting communication information employing a coding scheme being defined by a character set. The characters of the character set are encoded into codewords of a sequence of bits, the codewords being of varying length. The characters are divided into at least two categories. The categories may be a first category of shifted characters and a second category of unshifted characters. Where a shifted character is encountered during encoding a shift codeword is inserted in the sequence of bits. This allows each category to use overlapping codewords. Then the sequence is converted to ASCII characters to be transmitted.
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