Field-Repair System and Method
AssigneeChengDu HaiCun IP Technology LLC
InventorGuobiao ZHANG
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Abstract
The present invention discloses a field-repair system and method for three-dimensional mask-programmed memory (3D-MPROM). Unlike a conventional mask-ROM which is fully factory-tested and contains no bad data at shipping, the 3D-MPROM is not fully factory-tested and contains bad data at shipping. Most of the 3D-MPROM data are checked and repaired in the field.
Claims20
A field-repair system for a three-dimensional mask-programmed read-only memory (3D-MPROM), comprising:
- a 3D-MPROM comprising a plurality of vertically stacked memory cells, wherein said 3D-MPROM contains bad data at shipping;
- an error-detecting means for detecting said bad data in said 3D-MPROM;
- a processing apparatus comprising a communicating means with a storage device storing a correct copy of the 3D-MPROM data;
- wherein said processing apparatus is configured to fetch the good data to replace said bad data from said storage device with said communicating means.
A field-repair method for a three-dimensional mask-programmed read-only memory (3D-MPROM) comprising a plurality of vertically stacked memory cells and containing bad data at shipping, comprising the steps of:
- 1) reading data from said 3D-MPROM by a processing apparatus;
- 2) detecting bad data in said 3D-MPROM by an error-detection means;
- 3) fetching the good data to replace said bad data from a storage device with a communicating means in said processing apparatus, wherein said storage device stores a correct copy of the 3D-MPROM data.
A field-repair method for a pre-recorded content memory containing bad data at shipping, comprising the steps of:
- 1) reading data from said pre-recorded content memory by a processing apparatus;
- 2) detecting bad data in said pre-recorded content memory by an error-detection means;
- 3) fetching the good data to replace said bad data from a storage device with a communicating means in said processing apparatus, wherein said storage device stores a correct copy of the pre-recorded content data.
Dependencies are inferred from the claim text.