Transverse redundancy check
In , a transverse redundancy check (TRC) or vertical redundancy check is a for synchronized parallel bits applied once per bit time, across the bit streams. This requires additional parallel channels for the check bit or bits.
The term usually applies to a single parity bit, although it could also be used to refer to a larger Hamming code.
The adjective “transverse” is most often used when it is used in combination with additional error control coding, such as a longitudinal redundancy check. Although parity alone can only detect and not correct errors, it can be part of a system for correcting errors.
An example of a TRC is the parity written to the 9th track of a .