PATENT CLAIM ANALYSIS

Application Number: 15871246
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-05
Patent Classification: ["704", "501000"]

Abstract:
It discloses an acoustic channel-based data communications method which performs channel coding on an original data signal using a CRC coding method and a BCH coding method to obtain a coded sequence; modulates the coded sequence using a preset audio sequence symbol set via a symbol mapping method to obtain a digital audio signal; selects a channel frequency band according to characteristics of a transmitting equipment and interference between frequency bands; and converts the digital audio signal into an analog audio signal through a digital-to-analog converter and transmits the signal to a channel for transmission according to the selected channel frequency band.

Claim (Index 11):
The acoustic channel-based data communication method according to  claim 7 , wherein the capturing a synchronization symbol by calculating the cross-correlation between the synchronization symbol sample and the digital audio signal with strong interference channel frequency band data eliminated, and performing symbol inverse mapping, thus completing signal demodulation and obtaining a digital sequence comprises:\n for the digital audio signal with strong interference channel frequency band data eliminated, continuously calculating the cross-correlation between data in a detection window and the synchronization symbol sample; when obvious correlation peaks are not identified, sliding backward for a certain distance and capturing the synchronization symbol again; when obvious correlation peaks are identified, determining that frame synchronization is successful, and calculating the offset distance between the detection window and an original point according to the position of the correlation peak, adjusting the position of the detection window according to the offset distance between the detection window and the original point, and capturing the synchronization symbol; and performing correlation calculation on a sample sequence of odd/even mapping symbols and the digital symbol after the synchronization symbol in the digital audio signal in sequence according to an odd-even order, the most similar odd/even mapping symbol being a current symbol content, and mapping the current symbol content as the digital sequence according to a preset mapping relation, thus completing demodulation.

Metadata:
- Claim Count in Document: 23.0
- Percentile: 86.0
- Lexical Diversity: 1.89286
- Patent Class: 704.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['14859342', '14599573', '14942570', '13693023', '15236066']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2962043886692185
- 35 USC 102 Novelty (BERT): 0.5480764619299134
- Combined Prediction Score: 0.321391595995288
- Mean Citation Score: 280.155456
- Max Citation Score: 419.96518
- Similarity Product: 312.81258281663656

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