PATENT CLAIM ANALYSIS

Application Number: 15939923
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-10
Patent Classification: ["365", "158000"]

Abstract:
Magneto-resistive random access memory (MRAM) employing an integrated physically unclonable function (PUF) memory. The MRAM includes an MRAM array comprising an MRAM data array of data MRAM bit cells and an MRAM PUF array comprising PUF MRAM bit cells to form an integrated MRAM PUF array in the MRAM array. A resistance sensed from the PUF MRAM bit cells is compared to a reference resistance between the reference MRAM bit cells in the accessed MRAM bit cell row circuit in response to a read operation to cancel or mitigate the effect of process variations on MRAM bit cell resistance. The difference in sensed resistance and reference resistance is used to generate a random PUF output. By integrating the MRAM PUF array into an MRAM array containing an MRAM data array, access circuitry can be shared to control access to the MRAM data array and MRAM PUF, thus saving memory area.

Claim (Index 12):
The method of  claim 11 , wherein:\n generating the reference write signal comprises generating the reference write signal to program the plurality of PUF MRAM bit cells each in an MRAM bit cell column circuit to the reference memory state; and receiving the PUF data signal comprises receiving the PUF data signal representing a resistance of the plurality of PUF MRAM bit cells in the plurality of MRAM bit cell column circuits for the selected MRAM bit cell row circuit for the PUF read operation.

Metadata:
- Claim Count in Document: 42.0
- Percentile: 90.0
- Lexical Diversity: 2.36765
- Patent Class: 365.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['15639099', '15849863', '15676957', '15414855', '15078182']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8123812358046776
- 35 USC 102 Novelty (BERT): 0.5263700415548145
- Combined Prediction Score: 0.7837801163796912
- Mean Citation Score: 314.784094
- Max Citation Score: 347.02042
- Similarity Product: 261.1212614824462

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test