| 释义 |
longitudinal redundancy check
longitudinal redundancy check[‚län·jə′tüd·ən·əl ri′dən·dən·sē ‚chek] (communications) A method of checking for errors, in which data are arranged in blocks according to some rule, and the correctness of each character in the block is determined according to the rule. Abbreviated LRC. Longitudinal Redundancy Check (storage, communications)(LRC, Block Redundancy Check) Anerror checking method that generates a longitudinal paritybyte from a specified string or block of bytes on alongitudinal track.
The longitudinal parity byte is created by placing individualbytes of a string in a two-dimensional array and performinga Vertical Redundancy Check vertically and horizontally onthe array, creating an extra byte. This is an improvementover the VRC because it will catch two errors in theindividual characters of the string, beyond the odd errors.longitudinal redundancy checkAn error checking method that generates a parity bit from a specified string of bits on a longitudinal track. In a row and column format, such as on magnetic tape, longitudinal redundancy check (LRC) is often used with vertical redundancy check (VRC), which creates a parity bit for each character.See LRC
See LRC |