PATENT CLAIM ANALYSIS

Application Number: 15868185
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-05
Patent Classification: ["704", "225000"]

Abstract:
In an encoding method that is expected to produce a smaller code amount out of a periodicity-based encoding method and a non-periodicity-based encoding method, the amount of code or an estimated value of the amount of code of an integer value sequence which is derived from an audio signal is obtained while adjusting gain. In the other encoding method, an integer value sequence obtained in this process is substituted to obtain the amount of code or an estimated value of the amount of code of the integer value sequence. The obtained code amounts or estimated values are compared to choose one of the encoding methods and the integer value sequence is encoded using the chosen encoding method to obtain and output an integer signal code.

Claim (Index 6):
An encoding apparatus comprising:\n a frequency-domain sample string generator which obtains a frequency-domain sample string derived from an audio signal in each predetermined time interval; a periodicity analyzer which calculates an indicator of the degree of periodicity of the frequency-domain sample string; a periodicity-based gain adjustment code amount estimator which, when the indicator corresponds to high periodicity, obtains a first integer value sequence and a first periodicity-based code amount estimated value by adjusting a value of a first gain by a loop process, the first integer value sequence being a sequence of integer value samples which are obtained by dividing each sample in the frequency-domain sample string by the first gain, the first periodicity-based code amount estimated value being an estimated value of the code amount of a code corresponding to the first integer value sequence which is estimated with the assumption that the first integer value sequence is encoded using a periodicity-based encoding method; a second non-periodicity-based code amount estimator which, when the indicator corresponds to high periodicity, obtains a second non-periodicity-based code amount estimated value which is an estimated value of the code amount of a code corresponding to the first integer value sequence which is estimated with the assumption that the first integer value sequence is encoded using a non-periodicity-based encoding method; a non-periodicity-based gain adjustment code amount estimator which, when the indicator does not correspond to high periodicity, obtains a second integer value sequence and a first non-periodicity-based code amount estimated value by adjusting a value of a second gain by a loop process, the second integer value sequence being a sequence of integer value samples which are obtained by dividing each sample in the frequency-domain sample string by the second gain, the first non-periodicity-based code amount estimated value being an estimated value of the code amount of a code corresponding to the second integer value sequence which is estimated with the assumption that the second integer value sequence is encoded using the non-periodicity-based encoding method; a second periodicity-based code amount estimator which, when the indicator does not correspond to high periodicity, obtains a second periodicity-based code amount estimated value which is an estimated value of the code amount of a code corresponding to the second integer value sequence which is estimated with the assumption that the second integer value sequence is encoded using the periodicity-based encoding method; and a comparison and selection encoder which, when the first periodicity-based code amount estimated value is greater than the second non-periodicity-based code amount estimated value, encodes the first integer value sequence by using the non-periodicity-based encoding method to obtain and output a code corresponding to the first integer value sequence, when the first periodicity-based code amount estimated value is smaller than the second non-periodicity-based code amount estimated value, encodes the first integer value sequence by using the periodicity-based encoding method to obtain and output a code corresponding to the first integer value sequence, when the first non-periodicity-based code amount estimated value is greater than the second periodicity-based code amount estimated value, encodes the second integer value sequence by using the periodicity-based encoding method to obtain and output a code corresponding to the second integer value sequence, and when the first non-periodicity-based code amount estimated value is smaller than the second periodicity-based code amount estimated value, encodes the second integer value sequence by using the non-periodicity-based encoding method to obtain and output a code corresponding to the second integer value sequence, wherein the determination as to whether or not the indicator corresponds to high periodicity is made on the basis of whether or not the indicator is greater than a predetermined threshold or on the basis of whether or not the indicator is greater than or equal to a predetermined threshold.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 86.0
- Lexical Diversity: 2.45283
- Patent Class: 704.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15868143', '15126437', '14423581', '14394158', '13981125']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2822671937142619
- 35 USC 102 Novelty (BERT): 0.5966890530687111
- Combined Prediction Score: 0.3137093796497068
- Mean Citation Score: 390.263232
- Max Citation Score: 499.6019
- Similarity Product: 485.0323358720957

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