PATENT CLAIM ANALYSIS

Application Number: 15775462
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-12
Patent Classification: ["704", "500000"]

Abstract:
A voice communication system is equipped with a voice encoder which classifies respective bits of a voice information bit string in accordance with the degree of importance which is the magnitude of auditory influence when there is an error therein, classifies a group of bits which are high in degree of importance into a core layer and classifies a group of bits which are not high into an extension layer and a voice decoder which decodes a voice by using the bit strings in both of the core layer and the extension layer on the basis of frequency that the error is detected by error detection processing and when the frequency is low and decodes the voice using all bits or only some bets in the core layer when the frequency is high.

Claim (Index 3):
The voice communication system according to  claim 2 , wherein\n the error correction decoding/error detector is equipped with a first error correction decoding/error detector and a second error correction decoding/error detector, the first error correction decoding/error detector receives the bit string sent from the error detection/error correction encoder, performs error correction encoding and error detection on a bit which is error-protected by the first error detection/error correction encoder in the received bit string and outputs the voice information bit string after error correction, the voice decoder separates and decodes respective parameters of the spectrum envelope information, the low frequency band voiced/voiceless discrimination information, the high frequency band voiced/voiceless discrimination information, the pitch period information and the first gain information included in the voice information bit string after error correction, the second error correction encoding/error detector receives the bit string that the second information is subjected to error detection/correction encoding and performs correction decoding and error detection thereon and thereafter the voice decoder decodes the second gain information, further the voice decoder in the low frequency band, determines a mixing ratio when mixing a pitch pulse which is generated in a pitch period that the pitch period information indicates with a white noise on the basis of the low frequency band voiced/voiceless discrimination information and prepares a low frequency band mixed signal, and in the high frequency band, obtains a spectrum envelope amplitude from the spectrum envelope information, obtains an average value of the spectrum envelope amplitudes per band which is divided on a frequency axis, determines the mixing ratio when mixing the pitch pulse with the white noise per band on the basis of a result of determination of a band in which the average value of the spectrum envelope amplitudes is maximized and the high frequency band voiced/voiceless discrimination information and generates a mixed signal, and adds together the mixed signals in all bands which are divided in the high frequency band and generates a high frequency band mixed signal, adds together the low frequency band mixed signal and the high frequency band mixed signal and generates a mixed sound source signal, adds the spectrum envelope information to the mixed sound source signal, thereafter in a case where an error is not detected as a result of error detection of the second gain information, adds both of the first gain information and second gain information thereto and generates a reproduced voice, and in a case where the error is detected, adds only the first gain information thereto and generates the reproduced voice.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 93.0
- Lexical Diversity: 2.25
- Patent Class: 704.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['09401068', '09915893', '10615268', '14478839', '10292460']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2622310669000055
- 35 USC 102 Novelty (BERT): 0.5039287863870457
- Combined Prediction Score: 0.2864008388487095
- Mean Citation Score: 229.928128
- Max Citation Score: 261.23724
- Similarity Product: 202.3425397535133

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