EEPROM memory card device having defect relieving means

Details EEPROM memory card device having defect relieving means EEPROM memory card device having defect relieving means

1993-05-07

2000-12-12

Beausoliel, Jr., Robert W.

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

714 5, 714710, G06F 1100

Patent

active

061611956

ABSTRACT:
This invention provides a memory card device using an EEPROM as a semiconductor memory. When a data write-in defective area is detected in the storage area of the EEPROM, a space area is retrieved from the storage area of the EEPROM as a relieving area and data to be written into the data write-in defective area is written into the relieving area. Then, when the relieving area becomes full and a data write-in defective area is detected in the storage area of the EEPROM, another space area is retrieved from the storage area of the EEPROM as a new relieving area and data to be written into the data write-in defective area is written into the new relieving area.

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