PATENT CLAIM ANALYSIS

Application Number: 16212461
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-04
Patent Classification: ["398", "208000"]

Abstract:
A timing recovery system generates a sampling clock to synchronize sampling of a receiver to a symbol rate of an incoming signal. The input signal is received over an optical communication channel. The receiver generates a timing matrix representing coefficients of a timing tone detected in the input signal. The timing tone representing frequency and phase of a symbol clock of the input signal and has a non-zero timing tone energy. The receiver computes a rotation control signal based on the timing matrix that represents an amount of accumulated phase shift in the input signal relative to the sampling clock. A numerically controlled oscillator is controlled to adjust at least one of the phase and frequency of the sampling clock based on the rotation control signal.

Claim (Index 13):
The method of  claim 11  wherein computing, by the rotation computation block, the rotation control signal comprises:\n generating, by a timing matrix estimation block, a timing matrix based on the in-phase and quadrature error signal; \n determining, by a cycle slip computation block, a cycle slip number based on the timing matrix, the cycle slip number representing a number of full symbol period shifts of the input signal relative to the sampling clock; \n generating, by a phase error computation block, a phase error signal based on the timing matrix, the phase error signal representing a phase error of the digital input signal relative to the sampling clock; \n filtering, by a loop filter, the phase error signal to generate a filtered phase error signal; and \n generating, by the loop filter, the rotation control signal based on the cycle slip number and the filtered phase error signal, the rotation control signal being configured to correct for phase error and the number of full symbol period shifts of the input signal relative to the sampling clock.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 98.0
- Lexical Diversity: 2.31579
- Patent Class: 398.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['15839698', '14869676', '14095789', '15623292', '13594644']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7198346957034585
- 35 USC 102 Novelty (BERT): 0.5682102287082699
- Combined Prediction Score: 0.7046722490039397
- Mean Citation Score: 372.001064
- Max Citation Score: 397.64523
- Similarity Product: 360.5952069199258

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