PATENT CLAIM ANALYSIS

Application Number: 15881692
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["375", "150000"]

Abstract:
A signal detection circuit includes: a correlation circuit including the first through nth correlators connected sequentially as the first through nth stage correlators and each computing a correlation value between a received signal and a spreading sequence while shifting the received signal to the next stage depending on the chip rate period of the spreading sequence; a first adder that adds k correlation values computed by k correlators so as to generate a first addition value; a second adder that adds r correlation values computed by r correlators so as to generate a second addition value; a subtractor that subtracts the first addition value from the second addition value so as to generate a subtraction value; and a synchronization detection unit that compares the subtraction value with a threshold value, so as to detect the synchronization timing of the spreading sequence and the received signal.

Claim (Index 8):
A signal detection method for a signal detection circuit including receiving a signal transmitted by spectrum spreading communications using a spreading sequence and acquiring reception data from the resulting received signal on a basis of the spreading sequence, the signal detection method comprising the steps of:\n computing, as first through nth correlation values (n is an integer equal to three or greater), a correlation value between said spreading sequence and said received signal for n bits shifted according to a chip rate period of said spreading sequence; adding correlation values for k bits (k is an integer such that 1<k\u2264j where j is an integer such that 1<j<n\u22122) including said jth correlation value among said first through jth correlation values, so as to generate a first addition value, adding correlation values for r bits (r is an integer such that k<r\u2264p where p is an integer such that j<p\u2264n) including said pth correlation value among said first through pth correlation values, so as to generate a second addition value, subtracting said first addition value from said second addition value so as to generate a subtraction value; and comparing said subtraction value with a threshold value, so as to detect a synchronization timing of said spreading sequence and said received signal according to the comparison result.

Metadata:
- Claim Count in Document: 32.0
- Percentile: 86.0
- Lexical Diversity: 2.45161
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['10292447', '09699553', '10088553', '15881696', '11039009']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5010121553195812
- 35 USC 102 Novelty (BERT): 0.5110907338275309
- Combined Prediction Score: 0.5020200131703761
- Mean Citation Score: 257.556946
- Max Citation Score: 310.7614700000001
- Similarity Product: 250.8088765512485

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