PATENT CLAIM ANALYSIS

Application Number: 16023626
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-11
Patent Classification: ["380", "044000"]

Abstract:
A key enrollment method of a physically unclonable function (PUF) circuit including a plurality of PUF cells includes receiving a first level key from PUF cells, performing bit encoding on the first level key using a bit coding table based on Hamming weights of a plurality of bits in the first level key to generate a second level key, storing first helper data associated with the second level key in a non-volatile memory, performing block encoding on the second level key using an error correction code to generate a third level key, and storing second helper data associated with the third level key in the non-volatile memory.

Claim (Index 16):
An electronic device comprising:\n a nonvolatile memory; a secure key source configured to generate a plurality of first key value, each of the plurality of first key value including a plurality of first bits; and an error correction unit configured to correct errors in each of the plurality of first key values, wherein the error correction unit comprises: a bit encoder configured to perform bit encoding on each of the plurality of first key values to generate a plurality of second bits and a plurality of mask values, each of the plurality of second bits corresponding to hamming weight in the each of the plurality of first key values, each of the plurality of mask values corresponding to the each of the plurality of first key values; and a block encoder configured to perform block encoding on the plurality of second bits using an error correction code to generate a third level key and second helper data, and to output the second helper data to the nonvolatile memory, wherein a logical operation between one of the plurality of first key values and corresponding one of the mask values generates a predetermined value.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 94.0
- Lexical Diversity: 2.15094
- Patent Class: 380.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14553734', '14426728', '13254356', '12443736', '14699354']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4083862802546673
- 35 USC 102 Novelty (BERT): 0.4767511490131683
- Combined Prediction Score: 0.4152227671305174
- Mean Citation Score: 197.249056
- Max Citation Score: 205.81284
- Similarity Product: 156.3274928990507

Labels:
- Claim Label 101: 0
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 0
- Label 101 Adjusted: 0

Dataset: test