Error detection/correction and fault detection/recovery – Pulse or data error handling – Memory testing
Reexamination Certificate
2007-12-04
2007-12-04
Britt, Cynthia (Department: 2117)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Memory testing
C714S030000
Reexamination Certificate
active
10660006
ABSTRACT:
A method, system, and product are disclosed for isolating a defect in a memory system by determining in which particular component of the memory system the defect exists. The memory system includes multiple components. The components include a physical memory module, a memory card to which the physical memory module is attached, and a memory controller for controlling the memory card. The memory card includes one or more electrical buffers for driving or detecting the memory signals. The buffers may be used as virtual memory elements. Each component is tested separately in order to identify the defective component with the help of virtual memory system elements. The components are tested by first testing the physical memory module. If the physical memory module passes the test, the memory card is then tested. If the memory card passes its test, the memory controller is tested.
REFERENCES:
patent: 5343478 (1994-08-01), James et al.
patent: 5357521 (1994-10-01), Cheng et al.
patent: 5357621 (1994-10-01), Cox
Goodwin Joel Gerard
Misra Manish
Upton John Daniel
Britt Cynthia
Gerhardt Diana R.
International Business Machines - Corporation
Tabone, Jr. John J.
Yee Duke W.
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