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 3):
The device of  claim 1  wherein the rotation computation block comprises:\n a timing matrix estimation block to generate a timing matrix based on the in-phase and quadrature error signal; \n a cycle slip computation block to determine, based on the timing matrix, a cycle slip number representing a number of full symbol period shifts of the input signal relative to the sampling clock; \n a phase error computation block to generate, based on the timing matrix, a phase error signal representing a phase error of the digital input signal relative to the sampling clock; and \n a loop filter to filter the phase error signal to generate a filtered phase error signal and to generate 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): 0.7191439057198534
- 35 USC 102 Novelty (BERT): 0.569239017923736
- Combined Prediction Score: 0.7041534169402417
- Mean Citation Score: 372.001064
- Max Citation Score: 397.64523
- Similarity Product: 381.4532166225886

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