PATENT CLAIM ANALYSIS

Application Number: 15865461
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["381", "071200"]

Abstract:
An active noise reduction device reduces noise in a space within a vehicle body. The active noise reduction device includes a first input unit, a signal processor, and an abnormality determiner. The first input unit acquires, from a first vibration detector fitted to the vehicle body, a first signal that indicates a magnitude of vibration in a specific part of the vehicle body. The signal processor generates a cancellation signal that is used to output a cancellation sound for reducing the noise, by using the first signal as a reference signal having a correlation with the noise. The abnormality determiner determines whether or not an abnormality is present in the specific part by using the first signal.

Claim (Index 10):
The active noise reduction device according to  claim 1 , further comprising:\n a first filter configured to generate the cancellation signal by applying an adaptive filter to the first signal; a cancellation signal output unit configured to output the cancellation signal; an error signal input unit configured to acquire an error signal that corresponds to a residual sound obtained by an interference between the cancellation sound that is output and the noise; a second filter configured to generate a filtered reference signal by correcting the first signal with a simulated transfer characteristic that simulates an acoustic transfer characteristic from the cancellation signal output unit to the error signal input unit; and an updater configured to successively update a coefficient of the adaptive filter, by using the error signal and the filtered reference signal.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 86.0
- Lexical Diversity: 2.18966
- Patent Class: 381.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15075635', '15120252', '14456338', '14640826', '15770266']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6425401272664771
- 35 USC 102 Novelty (BERT): 0.4740683008882448
- Combined Prediction Score: 0.625692944628654
- Mean Citation Score: 175.06639199999995
- Max Citation Score: 184.89185
- Similarity Product: 150.61658013522032

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