Back كشف الأخطاء وتصحيحها Arabic Deteición y correición d'errores AST Xəta aşkarlama kodlaşdırması Azerbaijani Выяўленне і выпраўленне памылак Byelorussian Карэкцыя памылак BE-X-OLD Detector i corrector d'errors Catalan Detekce a oprava chyb Czech Fehlerkorrekturverfahren German Ανίχνευση και διόρθωση σφαλμάτων Greek Detección y corrección de errores Spanish

Error detection and correction

Not to be confused with Exception handling.
This article is about computing. For knowledge, see Fact-checking and Problem solving.
To clean up transmission errors introduced by Earth's atmosphere (left), Goddard scientists applied Reed–Solomon error correction (right), which is commonly used in CDs and DVDs. Typical errors include missing pixels (white) and false signals (black). The white stripe indicates a brief period when transmission was interrupted.

In information theory and coding theory with applications in computer science and telecommunications, error detection and correction (EDAC) or error control are techniques that enable reliable delivery of digital data over unreliable communication channels. Many communication channels are subject to channel noise, and thus errors may be introduced during transmission from the source to a receiver. Error detection techniques allow detecting such errors, while error correction enables reconstruction of the original data in many cases.

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