PATENT CLAIM ANALYSIS

Application Number: 15911274
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["235", "451000"]

Abstract:
A tag reader includes: a phase calculation section that sequentially calculates a phase of a reception wave; a phase difference calculation section that calculates a phase difference as a difference of phases calculated at two time points; and a tag angle calculation section that calculates a tag angle between a straight line connecting an antenna and the wireless tag and a line on which the wireless tag is moving. The phase difference calculation section calculates two values of the phase difference. The tag angle calculation section calculates a first tag angle and a second tag angle. The tag reader comprises a tag distance calculation section that calculates an antenna-tag minimum distance as a minimum distance from the line to the antenna.

Claim (Index 3):
The tag reader according to  claim 1 , further comprising:\n a storage portion that stores an antenna-line distance as a minimum distance from the antenna to the line; a second phase difference calculation section that calculates the phase difference calculated with a switching point of a phase gradient code being set to a time point, in accordance with the phase calculated sequentially by the phase calculation section; a second tag distance calculation section that calculates an antenna-tag distance as a distance from the antenna to the wireless tag at a code switching adjacent time point as another time point for calculation of the phase difference together with the switching point of the phase gradient code, in accordance with the antenna-line distance stored in the storage portion and the phase difference calculated by the second phase calculation section; a second tag angle calculation section that calculates the tag angle at the code switching adjacent time point in accordance with the antenna-tag distance calculated by the second tag distance calculation section and the antenna-line distance stored in the storage portion; a travel distance calculation section that calculates the travel distance from a position of the wireless tag at the code switching adjacent time point to a position of the wireless tag at the switching point of the phase gradient code, in accordance with the tag angle calculated by the second tag angle calculation section, the antenna-tag distance calculated by the second tag distance calculation section, and the antenna-line distance stored in the storage portion; and a speed calculation section that calculates travel speed of the wireless tag in accordance with the travel distance calculated by the travel distance calculation section and a time difference between the code switching adjacent time point and the switching point of the phase gradient code, wherein: the tag angle calculation section calculates the travel distance of the wireless tag during the two time points in accordance with the time difference between the two time points and the travel speed of the wireless tag calculated by the speed calculation section; the tag distance calculation section calculates the distance between the position at the tag angle having the first tag angle and the position at the tag angle having the second tag angle, in accordance with a time difference between a time point at the tag angle having the first tag angle and a time point at the tag angle having the second tag angle, and the travel speed of the wireless tag calculated by the speed calculation section; and the tag reader further comprises\n a line determination section that determines whether the wireless tag is moving on a preset line, in accordance with comparison between the antenna-tag minimum distance calculated by the tag distance calculation section and the antenna-line distance stored in the storage portion.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 90.0
- Lexical Diversity: 2.61224
- Patent Class: 235.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['12602411', '11885973', '12628620', '14131450', '11030877']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5799824204965566
- 35 USC 102 Novelty (BERT): 0.4753946278220166
- Combined Prediction Score: 0.5695236412291026
- Mean Citation Score: 203.975492
- Max Citation Score: 236.59209
- Similarity Product: 185.541851771282

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