PATENT CLAIM ANALYSIS

Application Number: 15989618
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-09
Patent Classification: ["704", "203000"]

Abstract:
A frame error concealment method based on frames including transform coefficient vectors including the following steps: It tracks sign changes between corresponding transform coefficients of predetermined sub-vectors of consecutive good stationary frames. It accumulates the number of sign changes in corresponding sub-vectors of a predetermined number of consecutive good stationary frames. It reconstructs an erroneous frame with the latest good stationary frame, but with reversed signs of transform coefficients in sub-vectors having an accumulated number of sign changes that exceeds a predetermined threshold.

Claim (Index 12):
An audio frame loss concealment method for improving audio quality, the method being performed by a decoder and comprising:\n receiving a first audio frame, the first audio frame comprising a plurality of bands, each of the plurality of bands of the first audio frame comprising a plurality of transform coefficients; for each one of the plurality of bands of the first audio frame, storing a sign switch value that is associated with the band and that indicates a number of transform coefficient sign switches; determining that a next audio frame immediately following the first audio frame is lost; and as a result of determining that the next audio frame is lost, reconstructing the lost audio frame such that: the reconstructed lost audio frame comprises a plurality of bands, wherein each one of the plurality of bands of the reconstructed lost audio frame corresponds to one of the plurality of bands of the first audio frame and wherein each band of the reconstructed lost audio frame comprises a plurality of transform coefficients, for each transform coefficient included in the reconstructed lost audio frame, the absolute value of the transform coefficient is identical to the absolute value of a corresponding transform coefficient included in the first audio frame, and for each band of the reconstructed lost audio frame, the sign of each transform coefficient included in the band is determined based on the sign switch value that is associated with the band of the first audio frame to which the band of the reconstructed lost audio frame corresponds.

Metadata:
- Claim Count in Document: 35.0
- Percentile: 93.0
- Lexical Diversity: 1.83333
- Patent Class: 704.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15271930', '14767499', '14427778', '14977207', '15844004']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2272310269435312
- 35 USC 102 Novelty (BERT): 0.5176479495718719
- Combined Prediction Score: 0.2562727192063653
- Mean Citation Score: 217.358276
- Max Citation Score: 323.74716
- Similarity Product: 298.4045501047325

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