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題名 | TSC Berger-Code Checker Design for 2伷[fed2][fec1]-Bit Information |
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作者姓名(中文) | 張文峰; 吳誠文; | 書刊名 | Journal of Information Science and Engineering |
卷期 | 15:3 1999.05[民88.05] |
頁次 | 頁429-440 |
分類號 | 448.5 |
關鍵詞 | Berger code; Concurrent error detection; On-line testing; Totally-self-checking checker; Two-rail code; |
語文 | 英文(English) |
英文摘要 | Berger code (BC) is an optimal separable code which can detect all single stuck-at and unidirectional faults. The traditional BC checker is not totally self-checking (TSC) when k=2□, where k is the number of information bits in a code word, and r is the number of check bits. The case in which k=2□, however, is important and practical since information words in most digital systems are in the form of a power of 2. This problem was solved recently by Rao et al., who proposed a TSC BC checker based on the concept of a generalized BC partition technique. We extend their work and propose two TSC BC checkers for k=2□, by modifying the conventional BC checker. The first design adds to it a pair of 1/2-code inputs and a two-rail-code checker. The second method includes a periodic input and produces a periodic output. Compared with the results of Rao et al., our checkers require less hardare overhead and check time. |
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