PATENT CLAIM ANALYSIS

Application Number: 15869560
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-05
Patent Classification: ["704", "205000"]

Abstract:
A method is provided for extending the frequency band of an audio signal during a decoding or improvement process. The method includes obtaining the decoded signal in a first frequency band, referred to as a low band. Tonal components and a surround signal are extracted from the signal from the low-band signal, and the tonal components and the surround signal are combined by adaptive mixing using energy-level control factors to obtain an audio signal, referred to as a combined signal. The low-band decoded signal before the extraction step or the combined signal after the combination step are extended over at least one second frequency band which is higher than the first frequency band. Also proved are a frequency-band extension device which implements the described method and a decoder including a device of this type.

Claim (Index 4):
The method of  claim 3 , wherein the combined signal is de-emphasized according to the equation: U HB \ue89e \ue89e 2 \u2032 \ue8a0 ( k ) = { 0 k = 0 , \u2026 \ue89e , 199 G deemph \ue8a0 ( k - 200 ) \ue89e U HB \ue89e \ue89e 2 \ue8a0 ( k ) k = 200 , \u2026 \ue89e , 255 G deemph \ue8a0 ( 55 ) \ue89e U HB \ue89e \ue89e 2 \ue8a0 ( k ) k = 256 , \u2026 \ue89e , 319 where G deemph (k) is the discrete frequency response of the filter 1/(1\u22120.68z \u22121 ) over a restricted frequency band.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 86.0
- Lexical Diversity: 1.91892
- Patent Class: 704.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15117100', '14896651', '14904555', '15715785', '15715733']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.3636933501638207
- 35 USC 102 Novelty (BERT): 0.5487742347848856
- Combined Prediction Score: 0.3822014386259272
- Mean Citation Score: 386.806958
- Max Citation Score: 484.21936
- Similarity Product: 265.7125084081459

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