Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital logic testing
Reexamination Certificate
2006-02-28
2006-02-28
Tu, Christine T. (Department: 2133)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital logic testing
C714S819000
Reexamination Certificate
active
07007214
ABSTRACT:
A method and system for locating connector defects in a defective scan chain that has a parallel non-defective scan chain on a different wiring level, with both scan chains being laid out in a regular array pattern. A predetermined bit sequence is scanned into the defective scan chain. The contents of the defective scan chain are then parallel shifted into the non-defective scan chain. The contents of the non-defective scan chain is then scanned out and compared with the predetermined bit sequence. The comparison of the scanned out bits with the predetermined bit sequence facilitates locating both physically and logically where a connector defect has occurred in the defective scan chain.
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Bednar Thomas Richard
Eustis Steven Michael
Oppold Jeffery Howard
Pastel Leah Marie Pfeifer
Sopchak Thomas Gregory
Dillon & Yudell LLP
International Business Machines - Corporation
Tu Christine T.
Walsh Robert A.
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