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In computing, telecommunication, information theory, and coding theory, an error correction code, sometimes error correcting code, (ECC) is used for controlling errors in data over unreliable or noisy communication channels. The central idea is the sender encodes the message with redundant information in the form of an ECC. The redundancy allows the receiver to detect a limited number of errors that may occur anywhere in the message, and often to correct these errors without retransmission. The American mathematician Richard Hamming pioneered this field in the 1940s and invented the first error-correcting code in 1950: the Hamming (7,4) code.

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  • Codi de correcció d'errors (ca)
  • Código de corrección de errores (es)
  • Error correction code (en)
  • Корректирующий код (ru)
  • 纠错码 (zh)
rdfs:comment
  • In computing, telecommunication, information theory, and coding theory, an error correction code, sometimes error correcting code, (ECC) is used for controlling errors in data over unreliable or noisy communication channels. The central idea is the sender encodes the message with redundant information in the form of an ECC. The redundancy allows the receiver to detect a limited number of errors that may occur anywhere in the message, and often to correct these errors without retransmission. The American mathematician Richard Hamming pioneered this field in the 1940s and invented the first error-correcting code in 1950: the Hamming (7,4) code. (en)
  • Código de corrección de errores, código autocorrector o código de autochequeo (Error-Correcting Code, ECC) sirve para garantizar la integridad de los datos. El hecho de añadir un único bit de paridad no siempre resulta suficiente para datos que se mueven constantemente de un lado para otro, especialmente en el caso de transmisión de datos a largas distancias, donde las señales transmitidas están expuestas a interferencias eléctricas (por ejemplo: en una red de computadoras, donde los datos viajan de una computadora a otra que puede estar, incluso, en otro país). (es)
  • Корректирующий код (также помехоустойчивый код) — код, предназначенный для обнаружения и исправления ошибок. Основная техника — добавление при записи (передаче) в полезные данные специальным образом структурированной избыточной информации (например, контрольного числа), а при чтении (приёме) использование такой избыточной информации для обнаружения и исправления ошибки. Число ошибок, которое можно исправить, ограничено и зависит от конкретного применяемого кода. (ru)
  • 在计算机,电信,信息理论和编码理论中,纠错码(ECC,error correction/correcting code)是信息传输中错误检测与纠正的工具。它通常用在不可靠或嘈杂的信道中。数据发送方利用纠错码中的冗余信息,使得接收方能够检测消息传输中发生的错误,而且通常可以纠正这些错误而无需重新传输。美国数学家理查德·汉明(Richard Hamming)在1940年代开创了这一领域,并在1950年发明了第一个纠错码:汉明(7,4)代码。 相比错误检测,纠错码不仅能够检测到错误,而且可以将其更正。它的优点是在出现错误时不需要反向信道来请求重发数据,缺点是消息中增加了固定开销,因此需要更高的前向信道带宽。因此,纠错码用于重传成本高昂或无法实现的情况,例如单向通信链路,时延较长的链接,以及以多播方式发送给多个接收者的链接。比如,绕天王星运行的卫星,由于传输错误而造成的重发会造成5个小时的延迟。纠错码信息通常添加到大容量存储设备中,以恢复损坏的数据,并广泛用于调制解调器、固态硬盘,以及主存为 ECC 内存的系统中。 (zh)
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