longitudinal parity

longitudinal parity

[‚län·jə′tüd·ən·əl ′par·əd·ē] (communications) Parity associated with bits recorded on one track in a data block, to indicate whether the number of recorded bits in the block is even or odd.

longitudinal parity

(storage, communications)An extra byte (or word) appendedto a block of data in order to reveal corruption of the data.Bit n of this byte indicates whether there was an even or oddnumber of "1" bits in bit position n of the bytes in theblock. The parity byte is computed by XORing the data bytesin the block. Longitudinal parity allows single bit errors tobe detected.