Apparatus and method for producing a data stream and...

Data processing: speech signal processing – linguistics – language – Audio signal time compression or expansion

Reexamination Certificate

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C704S504000, C704S228000, C375S240230

Reexamination Certificate

active

07433825

ABSTRACT:
An entropy encoder includes an apparatus for producing a data stream which comprises two reference points, of code words of variable lengths, the apparatus comprising a first device for writing at least a part of a code word into the data stream in a first direction of writing, starting from a first reference point, and a second device for writing at least a part of a code word into the data stream in a second direction of writing, which is opposite to the first direction of writing, starting from the other reference point. In particular, when a raster having a plurality of segments is used to write the code words of variable lengths into the data stream, the number of the code words which can be written starting at raster points is doubled, in the best case, such that the data stream of code words of variable lengths is robust toward a propagation of sequence errors.

REFERENCES:
patent: 5835144 (1998-11-01), Matsumura et al.
patent: 5852469 (1998-12-01), Nagai et al.
patent: 2001/0053184 (2001-12-01), Chujoh et al.
patent: 754877 (2000-07-01), None
patent: 3702490 (1988-08-01), None
patent: 69126565 (1991-10-01), None
patent: 19747119 (1999-04-01), None
patent: 0612156 (1994-08-01), None
patent: 4-504936 (1992-08-01), None

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