PATENT CLAIM ANALYSIS

Application Number: 15761694
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-12
Patent Classification: ["455", "570000"]

Abstract:
An echo time delay detection method, an echo elimination device, and terminal equipment are provided. The echo time delay detection method includes: obtaining an audio signal transmitted through air and acquired by an audio input device of terminal equipment when detecting a call access request, the audio signal corresponding to an audio output by an audio output device of the terminal equipment; converting the audio signal to obtain a signal to be processed; determining a reference signal corresponding to the audio signal; and determining an echo time delay value according to the reference signal and the signal to be processed.

Claim (Index 18):
The echo elimination device according to  claim 16 , wherein the at least one processor further operates as instructed by the program code to:\n determine a binary array of each frame of the reference signal, wherein the binary array of each frame of the reference signal comprises binary values of all frequency bins of the frame of the reference signal; determine a binary array of each frame of the signal to be processed, wherein the binary array of each frame of the signal to be processed comprises binary values of all frequency bins of the frame of the signal to be processed; perform XOR accumulation processing on binary arrays of a same frame of the reference signal and the signal to be processed, to obtain an XOR accumulation processing result of each frame; select a processing result meeting a set condition from XOR accumulation processing results of all frames of the reference signal and the signal to be processed; determine a time delay value corresponding to a frame number corresponding to the selected processing result as a candidate time delay value; and determine, in response to the candidate time delay value meeting a set convergence condition, the candidate time delay value as the first echo time delay value.

Metadata:
- Claim Count in Document: 19.0
- Percentile: 90.0
- Lexical Diversity: 2.27083
- Patent Class: 455.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14060141', '14400289', '15651757', '13933005', '15341520']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7036036848119701
- 35 USC 102 Novelty (BERT): 0.4750813662642587
- Combined Prediction Score: 0.680751452957199
- Mean Citation Score: 165.783996
- Max Citation Score: 169.41493
- Similarity Product: 124.99411355527876

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