This provided the impetus for researchers to develop the error detection and correction codes discussed here. Without FEC the world would be quite different.

SEC-DED: Single Error Correction-Double Error Detection codes, which can correct single-bit errors while detecting double-bit errors.

Two other established error-detection techniques are checksum (add up all the bits of the entire message, document or program and produce a single sum) and cyclic redundancy check, which operates ...

Finally, similar to the position detection targets (those square bits) in QR codes, Optar uses a two-pixel-wide border around the bit image.

Several techniques can be used to efficiently implement a Hamming coder for single-bit error correction and double-bit error detection.

A theorem states that no correction code can implement all the gate operations required for freely programmable computations with the logical quantum bits easily and protected against errors.

This report discusses methods to detect and correct errors automatically, and methods to select records that should preferably be corrected manually (selective and macro-editing).

The solution to this is to use what are called logical qubits, which distribute quantum information across multiple hardware qubits and allow the detection and correction of errors when they occur.

This report discusses methods to detect and correct errors automatically, and methods to select records that should preferably be corrected manually (selective and macro-editing).