PATENT CLAIM ANALYSIS

Application Number: 15991633
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2019-02
Patent Classification: ["380", "044000"]

Abstract:
A cryptographic key generator for a first optical transceiver includes a photodetector that receives a continuous wave light beam received via an optical channel from a second optical transceiver. The generator samples and quantizes signals from the photodetector during a plurality of intervals to generate respective samples representing respective numbers of photons incident on the photod.etector during each of the plurality of intervals. The generator creates a first cryptographic key from the plurality of digital values. The second optical transceiver receives a continuous wave light beam from the first transceiver and performs the same functions to create a second cryptographic key. Due to the reciprocal nature of the channels, the first and second cryptographic keys match.

Claim (Index 9):
The cryptographic key generator of  claim 1 , wherein:\n the first optical transceiver further comprises:\n a light source configured to produce a second light beam; and \n an optical coupler configured to selectively direct the second light beam from the light source to the optical channel and to direct the first light beam from the optical channel to the photodetector; and \n the program instructions further configure the processor of the cryptographic key generator to control the optical coupler and the light source to:\n direct the first light beam from the optical channel to the photodetector during the first plurality of intervals; and \n direct the second light beam from the light source to the optical channel during a second plurality of intervals, different from the first plurality of intervals.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 93.0
- Lexical Diversity: 2.10345
- Patent Class: 380.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['15508061', '11881121', '12331119', '15574667', '10797849']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.3676000178245599
- 35 USC 102 Novelty (BERT): 0.459415576481423
- Combined Prediction Score: 0.3767815736902462
- Mean Citation Score: 120.4066742
- Max Citation Score: 134.76772
- Similarity Product: 106.00885803126572

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

Dataset: test