PATENT CLAIM ANALYSIS

Application Number: 15981645
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-09
Patent Classification: ["704", "500000"]

Abstract:
A audio signal encoding method includes: dividing a frequency band of an audio signal into a plurality of sub-bands, and quantifying a sub-band normalization factor of each sub-band; determining signal bandwidth of bit allocation according to the quantified sub-band normalization factor, or according to the quantified sub-band normalization factor and bit rate information; allocating bits for a sub-band within the determined signal bandwidth; and coding a spectrum coefficient of the audio signal according to the bits allocated for each sub-band. According to embodiments of the present disclosure, during coding and decoding, signal bandwidth of bit allocation is determined according to the quantified sub-band normalization factor and bit rate information. In this manner, the determined signal bandwidth is effectively coded and decoded by centralizing the bits, and audio quality is improved.

Claim (Index 5):
The mobile phone according to  claim 4 , wherein in determining the index of the highest sub-band to be allocated bits according to the calculated sum and the initialized ratio factor the digital signal processor is configured to implement the following operations:\n calculating a product of the calculated sum multiplied by the initialized ratio factor; accumulating the quantized envelopes of the sub-bands whose indexes range b accu =[0, b] until the accumulated quantized envelope is greater than the product, wherein b represents the highest index of the at least a part of the plurality of sub-bands of the digital audio signal, wherein an index of the accumulated highest sub-band is the index of the highest sub-band to be allocated bits.

Metadata:
- Claim Count in Document: 53.0
- Percentile: 93.0
- Lexical Diversity: 2.30645
- Patent Class: 704.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14789755', '13532237', '15354641', '14675031', '14595672']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.3078149794817783
- 35 USC 102 Novelty (BERT): 0.5676931985929317
- Combined Prediction Score: 0.3338028013928936
- Mean Citation Score: 368.81412
- Max Citation Score: 469.9539
- Similarity Product: 344.5613262640357

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