PATENT CLAIM ANALYSIS

Application Number: 15894517
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-06
Patent Classification: ["704", "500000"]

Abstract:
A signal decoding method and device, where the method includes decoding a bit stream of a voice signal or an audio signal to acquire a decoded signal, predicting an excitation signal of an extension band according to the decoded signal, where the extension band is adjacent to a band of the decoded signal, and the band of the decoded signal is lower than the extension band; selecting a first band and a second band from the decoded signal, and predicting a spectral envelope of the extension band according to a spectral coefficient of the first band and a spectral coefficient of the second band; and determining a frequency-domain signal of the extension band according to the spectral envelope of the extension band and the excitation signal of the extension band.

Claim (Index 4):
A signal decoding device, comprising:\n a processor; and a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions for:\n receiving, from an encoder end, a core layer bit stream and an extension layer bit stream of at least one of a voice or audio signal; \n decoding the extension layer bit stream and determining a second envelope of an extension band according to the decoding the extensions layer bitstream, wherein the second envelope is determined by the encoder end according to a signal-to-noise ratio of the at least one of the voice or the audio signal, a pitch period of the at least one of the voice or the audio signal, and a first envelope of the extension band; decoding the core layer bit stream and obtaining a core layer signal of the at least one of the voice or the audio signal according to the decoding the core layer bit stream; predicting an excitation signal of the extension band according to the core layer signal; and predicting a signal of the extension band according to the excitation signal of the extension band and the second envelope of the extension band.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 88.0
- Lexical Diversity: 3.36585
- Patent Class: 704.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14952902', '14478839', '14808145', '12554638', '12554619']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2789568656584621
- 35 USC 102 Novelty (BERT): 0.5432938321348848
- Combined Prediction Score: 0.3053905623061044
- Mean Citation Score: 271.75732800000003
- Max Citation Score: 400.77707
- Similarity Product: 358.9411121081929

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test