1984-03-19
1986-08-26
Atkinson, Charles E.
Excavating
324 73R, G01R 3128
Patent
active
046086919
ABSTRACT:
A signature analyzer card 102 having sixteen cycle redundancy circuits 106 embodied within a cycle redundancy check generator 104 for serially receiving two thousand and forty-eight binary words 54 from a logic circuit card 22 under test when the cycle redundancy check generator 104 is in the write data in mode. Each cycle redundancy circuit 106 receives a serial stream of two thousand and forty-eight binary bits 144 with the logical value of each serial bit potentially changing the logical state of the cycle redundancy circuit 106. After the receipt of the two thousand and forty-eight binary words 54 and the read signature out mode is enabled, each cycle redundancy circuit 106 emits sixteen compressed serial binary bits 148. Each of the compressed serial binary bits 148 of each cycle redundancy circuit 106 combine to form one of sixteen generator output words 110 for providing an output signature 108 for verification by a diagnostic computer 40 indicating the validity of the two thousand and forty-eight binary words 54.
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Atkinson Charles E.
Clarkson Douglas M.
The Singer Company
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