error correction

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error correction

[′er·ər kə‚rek·shən]
(communications)
Any system for reducing errors in an incoming message, such as sending redundant signals as a check.
(computer science)
Computer device for automatically locating and correcting a machine error of dropping a bit or picking up an extraneous bit, without stopping the machine or having it go to a programmed recovery routine.
(electricity)
Correction of time errors in interconnected alternating-current power systems resulting from deviations from normal frequency, in order to make all areas synchronous.
References in periodicals archive ?
This introduction to digital data transmission, modulation, and error-correction coding, together with the underlying communication and information theory is an all-inclusive text suitable for all those connected with Mechanical Engineering or Computer Science.
Error-correction mechanisms are used widely in data communications, but, until this announcement, had not been adapted to Ethernet.
IBM's failure-protection modules also allow a PC server system with existing error-correction capabilities to be upgraded to support mainframe-class, multi-bit failure correction.
For more information on IBM's error-correcting memory modules, please refer to a white paper on the benefits of error-correction code for PC server main memory found at http://www.
The product will be the first error-correction IC to have on-chip analog-to-digital (A-D) converters and also will offer clock recovery circuitry for easy tuning.
This QRSVP chip allows Mitsubishi to offer AHA's error-correction technology as part of a complete set-top box strategy for OEM customers," said David Thom, ASSP product manager for Mitsubishi Electronics.
The measured error rates during IBM's 5-gigabit tests were very low -- one in 1 billion, which would decrease by a factor of a million to one in one quadrillion after applying standard error-correction codes -- and meet the stringent data-integrity requirements of the computer industry.
The error-correction function improves data reliability and decreases the workload on the system side.
To avoid the pitfall of directly measuring qubits, the team gingerly probed for differences among the three error-correction qubits, which are identical in the absence of errors.
However, he warns, the error-correction scheme verified by the team ultimately falls short as a practical approach because it excessively weakens radio signals transmitted by the atomic nuclei qubits so it can't be used to continuously monitor for errors.
Rynders, Behlen, and Horrobin (1979) found that neither the least-prompts system nor the error-correction system were effective with all students, but the system of least-prompts strategy resulted in more problems being solved than the error-correction strategy.
Quantum Information Processing and Quantum Error Correction is a self-contained, tutorial-based introduction to quantum information, quantum computation, and quantum error-correction.

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