Static information storage and retrieval – Read/write circuit – Bad bit
Reexamination Certificate
2006-08-29
2006-08-29
Ho, Hoai V. (Department: 2827)
Static information storage and retrieval
Read/write circuit
Bad bit
C365S222000, C365S233100, C365S236000
Reexamination Certificate
active
07099208
ABSTRACT:
An arbiter judges which of an internal access request and an external access request takes higher priority, when the internal access request conflicts with the external access request. A redundancy judgement circuit judges which of a normal memory cell and a redundancy memory cell is accessed, in accordance with each of the internal access request and the external access request. When the arbiter gives higher priority to the internal access request, the redundancy judgement circuit carries out redundancy judgement for the external access request during internal access operation. To prevent the malfunction of a memory core, a hold circuit holds redundancy judged result, and prevents the redundancy judged result for the external access request from being transmitted to the memory core that carries out the internal access operation.
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Mori Kaoru
Okuyama Yoshiaki
Arent & Fox PLLC
Fujitsu Limited
Ho Hoai V.
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