PATENT CLAIM ANALYSIS

Application Number: 15748892
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2019-01
Patent Classification: ["398", "065000"]

Abstract:
A coherent optical reception device includes a local oscillation laser that supplies laser light, a coherent optical reception front-end unit that receives a multi-level modulated optical signal, demodulates the optical signal on the basis of the laser light, and converts a demodulated optical signal into an electrical analog signal, an analog-to-digital converter that converts the analog signal into a digital signal, a compensation unit that compensates for an influence of dispersion due to a wavelength or a polarized wave of the optical signal and recovers a carrier phase of the digital signal, a constellation distortion compensation unit that compensates for constellation distortion of the multi-level modulation included in the digital signal in which an influence of dispersion is compensated for by the compensation unit, and an error correction decoding unit that performs error correction of the digital signal in which the constellation distortion is compensated for.

Claim (Index 11):
The coherent optical reception device according to  claim 10 ,\n wherein the first correlation coefficient calculation unit includes:\n a first signal normalization circuit that divides the quadrature phase modulation data component by a square of a norm of the quadrature phase modulation data component and outputs a result of the division; \n a first inner product calculation circuit that calculates an inner product of an output value of the first signal normalization circuit and the signal of the in-phase component; and \n a first averaging circuit that averages an inner product value calculated by the first inner product calculation circuit and outputs the first correlation coefficient, and \n wherein the second correlation coefficient calculation unit includes:\n a second signal normalization circuit that divides the quadrature phase modulation data component by a square of a norm of the quadrature phase modulation data component and outputs a result of the division; \n a second inner product calculation circuit that calculates an inner product of an output value of the second signal normalization circuit and the signal of the quadrature phase component; and \n a second averaging circuit that averages an inner product value calculated by the second inner product calculation circuit and outputs the second correlation coefficient.

Metadata:
- Claim Count in Document: 23.0
- Percentile: 86.0
- Lexical Diversity: 2.44444
- Patent Class: 398.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['16094857', '11221921', '12668626', '13913771', '14114537']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.724984699347288
- 35 USC 102 Novelty (BERT): 0.5392099477505068
- Combined Prediction Score: 0.7064072241876099
- Mean Citation Score: 288.27392999999995
- Max Citation Score: 334.0272
- Similarity Product: 259.5754727148056

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