Excavating
Patent
1989-07-18
1992-03-17
Smith, Jerry
Excavating
371 682, G06F 1100
Patent
active
050974670
ABSTRACT:
A switching trigger detection circuit is comprised of a selection unit, a memory unit, and first and second discrimination units. The memory unit stores switching trigger data of each of the line systems related to various switching trigger information at respective bit locations, and the selection unit sequentially specifies the bit location. The first and second discrimination units generate a fault occurrence signal and a fault recovery signal by watching the bit pattern of the switching trigger data stored in the memory unit. A shift of the bit locations is achieved along a guard time including a plurality of guard numbers, and each scan of the swtiching trigger data corresponds to each guard number. Further, the first and second discrimination units are comprised of logic gates to thereby assure a high speed discrimination.
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Fujitsu Limited
Hua Ly U.
Smith Jerry
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