Title:
通信システムのための情報付加的群符号発生器およびデコーダ
Document Type and Number:
Japanese Patent JP4680359
Kind Code:
B2
Abstract:
An encoder uses an input file of data and a key to produce a group of output symbols. A group of output symbols with key I is generated by determining a weight, W(I), for the group of output symbols to be generated, selecting W(D) of the input symbols associated with the group according to a function of I, and generating the output symbol values B(I) from a predetermined value function F(I) of the selected W(I) input symbols. An encoder can be called repeatedly to generate multiple groups of output symbols or multiple output symbols. The groups of output symbols are generally independent of each other, and an unbounded number (subject to the resolution of I) can be generated, if needed. A decoder receives some or all of the output symbols generated. The number of output symbols needed to decode an input file is equal to, or slightly greater than, the number of input symbols comprising the file, assuming that input symbols and output symbols represent the same number of bits of data.
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Inventors:
Michael G. Ruby
Application Number:
JP2000282732A
Publication Date:
May 11, 2011
Filing Date:
September 18, 2000
Export Citation:
Assignee:
Digital Fountain, Incorporated
International Classes:
G06F11/10; H03M13/15; G11B20/18; H03M13/09; H03M13/11; H03M13/37; H03M13/47; H04B14/04; H04L1/00; H04L12/18; H04L12/28; H04L12/56
Domestic Patent References:
| JP2001036417A | ||||
| JP2003507985A | ||||
| JP3809957B2 | ||||
| JP3976163B2 |
Attorney, Agent or Firm:
Kurata Masatoshi
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Tetsuya Kazama
Katsumura Hiro
Shoji Kawai
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Takuzo Ichihara
Yamashita Gen
Hidesaku Yamamoto
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Tetsuya Kazama
Katsumura Hiro
Shoji Kawai
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Takuzo Ichihara
Yamashita Gen
Hidesaku Yamamoto