Memory system having an alternate memory

Details Memory system having an alternate memory Memory system having an alternate memory

1981-08-03

1984-01-17

Moffitt, James W.

Static information storage and retrieval

Read/write circuit

Bad bit

G11C 1300

Patent

active

044266880

ABSTRACT:
A memory system having both a primary memory and an alternate memory. The alternate memory stores data to be substituted for data stored at memory locations in the primary memory that have defective cells. The alternate memory includes a byte memory and a bit memory. The byte memory stores bytes of data that are to replace bytes having multiple bit errors in the primary memory. The bit memory stores bits to replace single bits in any byte in the primary memory that has a single bit error. A mapping memory controls access to the primary memory and the alternate memory. The memory devices in the primary memory have either all row defects or all column defects in order to reduce the size of the mapping memory.

REFERENCES:
patent: 3350690 (1967-10-01), Rice
patent: 3434116 (1969-03-01), Anacker

Affiliated with

Also associated with

Rating

Memory system having an alternate memory does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Memory system having an alternate memory, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Memory system having an alternate memory will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-703331