Masato Kitakami

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Error locating codes (EL codes), first proposed by J.K. Wolf and B. Elspas (1963), have the potential to be used to identify the faulty module for fault isolation and reconfiguration in fault-tolerant computer systems. A new class of EL codes suitable for memory systems organized with b-bit (b/spl ges/2) byte-organized semiconductor memory chips which are(More)
SUMMARY This paper proposes a new class of error locating codes which corrects random single-bit errors and indicates a location of an erroneous b-bit byte which includes e-bit errors, where 2 < = e < b, called SEC 0 S e=b EL codes. This type of codes is very suitable for an application to memory systems constructed from byte-organized memory chips because(More)
Error locating code, a class of error control codes, can indicate the location of the error and is useful to fault diagnosis in computer systems and reduction of the retransmission cost in communication systems. The authors proposed two types of burst error locating codes called B/sub 1/EL codes and SEC-B/sub 1/EL codes. Since single-hit errors are more(More)
Recently, the number of remote systems using the Internet has been increased and the services provided by such systems get various. They are required to have high dependability. The existing evaluations have some problems.For example, the evaluations based on RASIS are vague and those provided by Japanese government are very complicated. The existing(More)
Most of speech and image data compressed by lossy compression whose decompressed data are different from the original ones. Here, the different between the decompressed data and the original ones cannot be recognized by most of people. Lossless image compression, which gives exactly the same decompressed data as the original ones, is necessary for medical(More)