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 12):
The cryptographic key generator of  claim 9 , wherein:\n the first plurality of intervals occurs during a first optical frame time and the second plurality of intervals occurs during a second optical frame time; and the program instructions further configure the processor to:\n encrypt data to be transmitted via the optical channel using the created cryptographic key; \n control the light source to modulate the second light beam according to the encrypted data during a third interval different from the first and second and optical frame times; \n control the optical coupler to direct the second light beam to the optical channel during the third interval and to direct the first light beam from the optical channel to the photodetector during a fourth interval, different from the third interval and the first and second optical frame times; and \n decrypt the digital values generated by the processor in response to the second light beam being incident on the photodetector during the fourth interval using the cryptographic key.

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): 0.3650749367372136
- 35 USC 102 Novelty (BERT): 0.4693909458899261
- Combined Prediction Score: 0.3755065376524849
- Mean Citation Score: 120.4066742
- Max Citation Score: 134.76772
- Similarity Product: 98.67458258461475

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