PATENT CLAIM ANALYSIS

Application Number: 15954813
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2019-10
Patent Classification: ["381", "066000"]

Abstract:
A device for acoustic echo cancellation includes a modulator, a speaker, a microphone, a demodulator, and an adaptive filter. The modulator duplicates a far-end signal to a frequency range that is higher than the far-end signal to be a first frequency-shifted signal and generates a modulated signal according to the far-end signal and the first frequency-shifted signal. The speaker generates a sound signal according to the modulated signal. The microphone generates a microphone signal according to a near-end signal and an echo signal. The echo signal is a convolution of the sound signal with a room impulse response. The demodulator extracts a demodulated signal and an echo-reference signal from the microphone signal. The adaptive filter generates a recovered signal to recover the near-end signal according to the demodulated signal and the echo-reference signal.

Claim (Index 1):
A device for acoustic echo cancellation, comprising:\n a modulator, duplicating a far-end signal to a frequency range that is higher than the far-end signal to be a first frequency-shifted signal and generating a modulated signal according to the far-end signal and the first frequency-shifted signal; a speaker, generating a sound signal according to the modulated signal; a microphone, generating a microphone signal according to a near-end signal and an echo signal, wherein the echo signal is a convolution of the sound signal with a room impulse response; a demodulator, extracting a demodulated signal and an echo-reference signal from the microphone signal; and an adaptive filter, generating a recovered signal to recover the near-end signal according to the demodulated signal and the echo-reference signal.

Metadata:
- Claim Count in Document: 32.0
- Percentile: 91.0
- Lexical Diversity: 2.88
- Patent Class: 381.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['12837658', '11262007', '14579416', '14797419', '11576915']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6441725401026273
- 35 USC 102 Novelty (BERT): 0.4758062974033608
- Combined Prediction Score: 0.6273359158327007
- Mean Citation Score: 178.303034
- Max Citation Score: 186.56789
- Similarity Product: 150.38323726021528

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

Dataset: test