PATENT CLAIM ANALYSIS

Application Number: 15896783
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2019-08
Patent Classification: ["398", "115000"]

Abstract:
A PON having an OLT configured to send downlink transmissions to ONUs using amplitude modulation and two symbol rates. An example ONU includes a clock-recovery circuit capable of continuous clock extraction from the received variable-rate modulated optical signal. The continuous clock extraction can be achieved, e.g., by (i) configuring the photodetector to convert the higher-rate portions of the received optical signal into transformed electrical waveforms while converting the lower-rate portions thereof into similar electrical waveforms and (ii) configuring the clock-recovery circuit to phase-align the clock signal with signal transitions in the resulting sequence of transformed and similar electrical waveforms. An ONU configured to operate in this manner can advantageously stay locked to the received data signal during transmissions at both symbol rates, without the need to reacquire the clock signal at each rate change and/or at the beginning of each packet intended for the host ONU.

Claim (Index 14):
The apparatus of  claim 13 , wherein the optical receiver further comprises a signal decoder configured to recover at least some of the data by sampling at least some duobinary electrical signals of a sequence of the NRZ-modulated and duobinary electrical signals at times determined using the second clock signal.

Metadata:
- Claim Count in Document: 44.0
- Percentile: 88.0
- Lexical Diversity: 1.72527
- Patent Class: 398.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['14329119', '09793954', '10185407', '10730413', '11176333']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7246585187070791
- 35 USC 102 Novelty (BERT): 0.5100618648133701
- Combined Prediction Score: 0.7031988533177083
- Mean Citation Score: 226.597388
- Max Citation Score: 232.92899
- Similarity Product: 173.80591200021027

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

Dataset: test