PATENT CLAIM ANALYSIS

Application Number: 15966697
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2019-10
Patent Classification: ["398", "208000"]

Abstract:
A coherent optical receiver in which the channel equalizer and the clock-recovery circuit are connected in a nested-loop configuration, wherein the channel estimate generated by the equalizer is used to adjust the phase of the clock signal generated by the clock-recovery circuit. The channel equalizer can be implemented using a bank of time-domain or frequency-domain FIR filters. In an example embodiment, the clock-recovery circuit is configured to track the phase rotation corresponding to the equalized signals in a frequency-dependent manner; track the phase rotation in the channel equalizer either in a frequency-dependent manner or based on the mean signal delay therein; and adjust the phase of the clock signal based on an effective difference between these two phase rotations. The clock-recovery circuit enhances the clock tone by applying a Fourier transform to the squared absolute values of the equalized signals outputted by the channel equalizer.

Claim (Index 2):
The apparatus of  claim 1 , wherein the digital signal processor further comprises a signal interpolator configured to generate the first plurality of digital samples by interpolating one or more digital signals representing the plurality of electrical digital measures, said interpolating being performed using the clock signal.

Metadata:
- Claim Count in Document: 42.0
- Percentile: 91.0
- Lexical Diversity: 2.01316
- Patent Class: 398.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['14319866', '14500239', '15376319', '15376337', '15376361']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6588336000632382
- 35 USC 102 Novelty (BERT): 0.5014145966438811
- Combined Prediction Score: 0.6430916997213025
- Mean Citation Score: 202.845026
- Max Citation Score: 208.35687
- Similarity Product: 169.12529286046205

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