公开(公告)号：US06453439B1

公开(公告)日：2002-09-17

申请号：US09501613

申请日：2000-02-10

Applicant: Masayuki Hattori ,  Kohei Yamamoto

Inventor： Masayuki Hattori ,  Kohei Yamamoto

IPC: H03M1300

CPC classification number: H03M13/2906 ,  H03M13/27

Abstract: A pseudo product code decoder effects error correction by using parity symbols of a first linear-structure error correction code contained in an input symbol train that constitutes a pseudo product code and by using parity symbols of a second linear-structure error correction code. Second-series information symbols are extracted from the symbol train; and a subtraction code of a pseudo product code codeword is formed of the second-series information symbols, with the first-series information symbol portion and the second linear-structure error correction code portion being changed to zero codes. The pseudo product code codeword is transformed into a product code codeword by subtracting processing with the subtraction code. Decoding processing is performed a plurality of times on the symbol train of the product code codeword, thereby effecting error correction; and first-series information symbols are extracted from the error corrected symbol train.

Abstract translation: 伪产品代码解码器通过使用包含在构成伪乘积代码的输入符号串中的第一线性结构错误校正码的奇偶校验符号并且通过使用第二线性结构错误校正码的奇偶校验符号来实现纠错。 从符号列中提取第二序列信息符号; 并且第一系列信息符号部分和第二线性结构纠错码部分被改变为零代码，由第二系列信息符号形成伪乘积码字的减法码。 通过用减法代码减去处理，将伪乘积代码码变换为乘积代码字。 在乘积代码字的符号列上执行多次解码处理，从而进行纠错; 并且从错误校正的符号列中提取第一系列信息符号。

公开(公告)号：US5521338A

公开(公告)日：1996-05-28

申请号：US299099

申请日：1994-09-02

Applicant: Yutaka Shono ,  Masahito Watanabe ,  Kohei Yamamoto ,  Naoyuki Furuta

Inventor： Yutaka Shono ,  Masahito Watanabe ,  Kohei Yamamoto ,  Naoyuki Furuta

IPC: E01F8/00 ,  G10K11/00

CPC classification number: E01F8/0023 ,  E01F8/0029

Abstract: First, sound absorbing plates made of a hard material are fixed to both side plates of shaped steel members extending upward from a sound insulation wall at intervals that are equal to arrangement spans of the shaped steel members. Then, sound absorbing members that have been formed into a predetermined shape and length are attached to outer surfaces of the sound insulation plates.

Abstract translation: 首先，将由硬质材料制成的吸声板固定在从绝缘壁向上延伸的成形钢构件的两个侧板上，间隔等于成形钢构件的排列。 然后，已经形成为预定形状和长度的吸音构件附接到隔音板的外表面。