PATENT CLAIM ANALYSIS

Application Number: 16128130
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-03
Patent Classification: ["381", "071400"]

Abstract:
A noise reduction device reduces noise at a second position by using a canceling sound emitted from a first position. The noise reduction device corrects, to a second transfer characteristic, a first transfer characteristic for when the first position and the second position are in a reference positional relationship, according to a signal indicating the positional relationship between the first position and the second position, and corrects a base signal based on the second transfer characteristic.

Claim (Index 1):
A noise reduction device which reduces noise at a second position by using a canceling sound emitted from a first position, the noise reduction device comprising:\n a first input terminal to which a noise reference signal having correlation with the noise is input; a base signal generator which generates a base signal having a frequency identified based on the noise reference signal that has been input; an adaptive filter unit which generates an output signal used for emission of the canceling sound, by applying a filter coefficient to the base signal that has been generated; an output terminal to which the output signal that has been generated is output; a second input terminal to which an error signal based on a residual sound generated at the second position due to interference between the canceling sound and the noise is input; a third input terminal to which a signal indicating a positional relationship between the first position and the second position is input; a corrector which corrects a first transfer characteristic to a second transfer characteristic, according to the signal indicating the positional relationship, and corrects the base signal based on the second transfer characteristic, the first transfer characteristic being a transfer characteristic for when the first position and the second position are in a reference positional relationship; and a filter coefficient updater which updates the filter coefficient based on the error signal that has been input and the base signal that has been corrected.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 97.0
- Lexical Diversity: 2.10256
- Patent Class: 381.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['12058050', '10936600', '16314593', '10587566', '11911582']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7058026124887279
- 35 USC 102 Novelty (BERT): 0.4772577730974345
- Combined Prediction Score: 0.6829481285495986
- Mean Citation Score: 215.269424
- Max Citation Score: 230.10907000000003
- Similarity Product: 198.5172309821964

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