Systematic Unidirectional Error-Detecting Codes
IEEE Transactions on Computers
IEEE Transactions on Information Theory
Theory and Design of t-Error Correcting and d(dt)-Unidirectional Error Detecting (t-EC d-UED) Codes
IEEE Transactions on Computers - Fault-Tolerant Computing
Error-control coding for computer systems
Error-control coding for computer systems
Unidirectional Byte Error Detecting Codes for Computer Memory Systems
IEEE Transactions on Computers
IEEE Transactions on Computers
Coding Techniques for Digital Recorders
Coding Techniques for Digital Recorders
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Codes for correcting and detecting unidirectional byte errors are investigated. The relations between distances and the error-correcting and -detecting capabilities of such codes are derived. It is shown that a two-fold unidirectional b-bit-byte error-correcting (2-UbEC) code requires at least three check bytes and that a one-fold unidirectional b-bit-byte error-correcting/2-fold unidirectional b-bit-byte error-detecting (1-UbEC/2-UbED) code requires at least two check bytes. Construction methods for 2-UbEC codes with three check bytes and 1-UbEC/2-UbEd codes with two check bytes are proposed.