PATENT CLAIM ANALYSIS

Application Number: 16195758
Application Type: Utility
Filing Date: 2018-11
Publication Date: 2019-05
Patent Classification: ["704", "500000"]

Abstract:
A coding apparatus, including a memory and a processor that, when executing instructions stored in the memory, performs operations including encoding low-band transform coefficients in a first band and calculating, for each extension-band subband obtained by splitting an extension band, a threshold amplitude based on an analysis of statistics on extension-band transform coefficients included in the subband. The processor further compares, for each of the extension-band subbands, an amplitude of the extension-band transform coefficients with the threshold amplitude to extract a representative transform coefficient, updates, when a number of the extracted representative transform coefficients is less than a predetermined number, the threshold amplitude, performs processing to again extract a transform coefficient using the updated threshold amplitude, calculates, for each of the extension-band subbands, a value of correlation between the representative transform coefficient and a normalized encoded low-band transform coefficient.

Claim (Index 1):
A coding apparatus comprising:\n a core coding section that encodes transform coefficients in a band lower than a reference frequency among input signal transform coefficients acquired by transforming an input signal from a time domain to a frequency domain; and an extension-band coding section that encodes transform coefficients in an extension band by using core encoded low-band transform coefficients acquired by decoding data encoded by the core coding section, the extension band being a band higher than the reference frequency, wherein the extension-band coding section comprises:\n a threshold calculation section that calculates, for each of extension-band subbands acquired by splitting the extension band, a threshold based on statistics on transform coefficients comprised in the subband; \n a representative transform coefficient extraction section that compares, for each of the extension-band subbands, an amplitude of the transform coefficients with the threshold to extract a transform coefficient with an amplitude larger than the threshold, as a representative transform coefficient; and \n a matching section that calculates, for each of the extension-band subbands, a value of correlation between the representative transform coefficient and a normalized core encoded low-band transform coefficient and selects a subband with a largest value of correlation, wherein: \n the threshold calculation section updates, when a number of the representative transform coefficients extracted by the representative transform coefficient extraction section is less than a predetermined number, the threshold in accordance with a shortage number of the representative transform coefficients with reference to the predetermined number; and the representative transform coefficient extraction section performs processing to extract a transform coefficient again by using the updated threshold.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 98.0
- Lexical Diversity: 2.24638
- Patent Class: 704.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15079524', '15263534', '14350403', '12935032', '14414554']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2718573397177833
- 35 USC 102 Novelty (BERT): 0.5519547978494196
- Combined Prediction Score: 0.299867085530947
- Mean Citation Score: 332.95166000000006
- Max Citation Score: 408.09082
- Similarity Product: 361.5313631088829

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