error detection and correction


Also found in: Dictionary, Thesaurus, Acronyms, Wikipedia.

error detection and correction

(algorithm, storage)
(EDAC, or "error checking and correction", ECC) A collection of methods to detect errors in transmitted or stored data and to correct them. This is done in many ways, all of them involving some form of coding. The simplest form of error detection is a single added parity bit or a cyclic redundancy check. Multiple parity bits can not only detect that an error has occurred, but also which bits have been inverted, and should therefore be re-inverted to restore the original data. The more extra bits are added, the greater the chance that multiple errors will be detectable and correctable.

Several codes can perform Single Error Correction, Double Error Detection (SECDEC). One of the most commonly used is the Hamming code.

At the other technological extreme, cuniform texts from about 1500 B.C. which recorded the dates when Venus was visible, were examined on the basis of contained redundancies (the dates of appearance and disappearance were suplemented by the length of time of visibility) and "the worst data set ever seen" by [Huber, Zurich] was corrected.

RAM which includes EDAC circuits is known as error correcting memory (ECM).

[Wakerly, "Error Detecting Codes", North Holland 1978].

[Hamming, "Coding and Information Theory", 2nd Ed, Prentice Hall 1986].
References in periodicals archive ?
The MegaRam-200F employs powerful Reed-Solomon error detection and correction for the highest system reliability.
requirement for improved error detection and correction, the
The VSC9273, VSC9271, and VSC9211 offer transparent error detection and correction techniques that help maintain signal integrity for transmission in environments with increased optical attenuation, dispersion, and noise.
6285 MHz, the VCXO is ideal for Forward Error Correction, per the Reed-Solomon 255,239 algorithm, which allows for error detection and correction within the same byte-block.
One of the keys to Solid Data's 2 million-hour mean-time-between-failure (MTBF) its extensive Error Correction Code (ECC) algorithm that utilizes a full 64 bytes per 512 bytes for error detection and correction.
Full browser ?