PATENT CLAIM ANALYSIS

Application Number: 15933108
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-07
Patent Classification: ["704", "230000"]

Abstract:
The present document relates an audio encoding and decoding system (referred to as an audio codec system). In particular, the present document relates to a transform-based audio codec system which is particularly well suited for voice encoding/decoding. A quantization unit configured to quantize a first coefficient of a block of coefficients is described. The block of coefficients comprises a plurality of coefficients for a plurality of corresponding frequency bins. The quantization unit is configured to provide a set of quantizers. The set of quantizers comprises a plurality of different quantizers associated with a plurality of different signal-to-noise ratios, referred to as SNR, respectively. The plurality of different quantizers includes a noise-filling quantizer; one or more dithered quantizers; and one or more un-dithered quantizers. The quantization unit is further configured to determine an SNR indication indicative of a SNR attributed to the first coefficient, and to select a first quantizer from the set of quantizers, based on the SNR indication. In addition, the quantization unit is configured to quantize the first coefficient using the first quantizer.

Claim (Index 6):
A method for decoding a bitstream to provide a reconstructed audio signal; the method comprising\n selecting one of M pre-determined dither realizations; generating a plurality of dither values based on the selected dither realization; wherein M is an integer greater one; wherein the plurality of dither values is used by an inverse quantization unit comprising a dithered quantizer to determine a corresponding plurality of quantized coefficients based on a corresponding plurality of quantization indices; selecting a codebook from M pre-determined codebooks; entropy decoding coefficient data from the bitstream using the selected codebook, to provide the plurality of quantization indices; wherein the M pre-determined codebooks are associated with the M pre-determined dither realizations, respectively; wherein the M pre-determined codebooks have been trained using the M pre-determined dither realizations, respectively; and wherein the selected codebook is associated with the selected dither realization; and determining the reconstructed audio signal based on the plurality of quantized coefficients.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 90.0
- Lexical Diversity: 2.51948
- Patent Class: 704.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14781700', '14781219', '12263726', '11595995', '13100494']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.296587329184761
- 35 USC 102 Novelty (BERT): 0.5787582203540843
- Combined Prediction Score: 0.3248044183016933
- Mean Citation Score: 346.61315
- Max Citation Score: 488.08963
- Similarity Product: 388.4450453292906

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

Dataset: test