PATENT CLAIM ANALYSIS

Application Number: 15871485
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["375", "227000"]

Abstract:
Disclosed herein is a multi-stage echo cancelation scheme. The disclosed embodiments include an apparatus and method for monitoring and canceling echoes greater than 25 dB in a coaxial cable plant. The method includes obtaining echo channel estimate coefficients from a cable node. The method determines a location and strength of each partial echo in an impulse response using the echo channel estimate coefficients. Optionally, the method determines a frequency response of each partial echo in the impulse response.

Claim (Index 10):
An echo canceler configured to cancel a downstream echo signal from an upstream signal received by the echo canceler, the downstream echo signal comprising a downstream signal portion and a downstream noise signal portion, the echo canceler comprising:\n a first echo canceler configured to receive a downstream signal received by the echo canceler and produce a first cancelation signal from the downstream signal; a first subtractor configured to receive the first cancelation signal and a contaminated upstream signal, the contaminated upstream signal comprising an upstream signal and the downstream echo signal, the first subtractor configured to remove the downstream signal portion of the downstream echo signal from the upstream signal using the first cancelation signal, generating an upstream noise signal comprising the upstream signal and the downstream noise signal portion of the downstream echo signal; a third echo canceler configured to receive the downstream signal received by the echo canceler, the third echo canceler configured to produce a third cancelation signal from the downstream signal; a third subtractor configured to receive the third cancellation signal and a contaminated downstream signal that includes the downstream signal and a downstream noise signal, the third subtractor configured to remove the downstream signal from the contaminated downstream signal using the third cancelation signal, generating a downstream noise signal; a second echo canceler configured to receive the downstream noise signal, the second echo canceler configured to produce a second cancelation signal from the downstream noise signal for canceling the downstream noise signal portion of the downstream echo signal; and a second subtractor configured to receive the second cancelation signal from the second echo canceler and receive the upstream noise signal, the second subtractor configured to remove the downstream noise signal portion of the downstream echo signal from the upstream noise signal using the second cancelation signal to produce the upstream signal.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 86.0
- Lexical Diversity: 1.71429
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['09164504', '09532536', '12058050', '09131167', '12916425']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4953816560421376
- 35 USC 102 Novelty (BERT): 0.4911421013369289
- Combined Prediction Score: 0.4949577005716167
- Mean Citation Score: 234.26936800000004
- Max Citation Score: 250.83067000000003
- Similarity Product: 199.6146279798245

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