PATENT CLAIM ANALYSIS

Application Number: 16370748
Application Type: Utility
Filing Date: 2019-03
Publication Date: 2019-07
Patent Classification: ["704", "500000"]

Abstract:
An audio signal coding apparatus includes a time-frequency transformer that outputs sub-band spectra from an input signal; a sub-band energy quantizer; a tonality calculator that analyzes tonality of the sub-band spectra; a bit allocator that selects a second sub-band on which quantization is performed by a second quantizer on the basis of the analysis result of the tonality and quantized sub-band energy, and determines a first number of bits to be allocated to a first sub-band on which quantization is performed by a first quantizer; the first quantizer that performs first coding using the first number of bits; the second quantizer that performs coding using a second coding method; and a multiplexer.

Claim (Index 12):
An audio signal decoding method for decoding coded information output from an audio signal coding apparatus, the audio signal decoding method comprising:\n demultiplexing the coded information into first coded information, second coded information, quantized sub-band energy obtained by quantizing energy of each sub-band among sub-bands, and an analysis result of tonality calculated for each sub-band among the sub-bands; selecting a second sub-band from among the sub-bands on the basis of the analysis result of the tonality and the quantized sub-band energy; determining a first number of bits to be allocated to a first sub-band among the sub-bands; generating a first decoded spectrum by decoding the first coded information using the first number of bits; generating a second decoded spectrum by decoding the second coded information, and generating a reconstructed spectrum by performing decoding using the second decoded spectrum and the first decoded spectrum; and generating and outputting an output audio signal by performing a transform on the reconstructed spectrum into a time domain.

Metadata:
- Claim Count in Document: 24.0
- Percentile: 99.0
- Lexical Diversity: 2.30769
- Patent Class: 704.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15353780', '13977906', '16215079', '13499534', '11183087']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.3111944570435483
- 35 USC 102 Novelty (BERT): 0.6311804554265791
- Combined Prediction Score: 0.3431930568818515
- Mean Citation Score: 392.746186
- Max Citation Score: 587.0851
- Similarity Product: 557.6563029138745

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