PATENT CLAIM ANALYSIS

Application Number: 16388175
Application Type: Utility
Filing Date: 2019-04
Publication Date: 2019-08
Patent Classification: ["324", "207250"]

Abstract:
An angle sensor system includes a magnetic field generation unit for generating a rotating magnetic field, and an angle sensor for detecting the rotating magnetic field to generate a detected angle value. The rotating magnetic field contains first and second magnetic field components orthogonal to each other. Each of the first and second magnetic field components contains an ideal magnetic field component and an error magnetic field component. The error magnetic field component causes an angular error that varies with ½ the predetermined period. The angle sensor includes first and second detection signal generation units. Each of the first and second detection signal generation units includes a magnetic layer whose magnetization direction varies according to the direction of the rotating magnetic field. The magnetic layer is provided with a magnetic anisotropy that is set to reduce the angular error resulting from the error magnetic field component.

Claim (Index 1):
An angle sensor system comprising:\n a magnetic field generation unit for generating a rotating magnetic field whose direction at a predetermined detection position varies according to an angle to be detected; and an angle sensor for detecting the rotating magnetic field at the detection position and generating a detected angle value having a correspondence with the angle to be detected, wherein the rotating magnetic field at the detection position contains a first magnetic field component in a first direction, and a second magnetic field component in a second direction orthogonal to the first direction, the angle sensor includes:\n a first detection signal generation unit for generating a first detection signal having a correspondence with the cosine of an angle that the direction of the rotating magnetic field at the detection position forms with respect to the first direction; \n a second detection signal generation unit for generating a second detection signal having a correspondence with the sine of the angle that the direction of the rotating magnetic field at the detection position forms with respect to the first direction; and \n an angle detection unit for generating the detected angle value on the basis of the first and second detection signals, \n the first detection signal generation unit includes at least one first magnetic detection element, the at least one first magnetic detection element includes a first magnetic layer whose magnetization direction varies according to the direction of the rotating magnetic field at the detection position, the first magnetic layer is provided with a first magnetic anisotropy, the second detection signal generation unit includes at least one second magnetic detection element, the at least one second magnetic detection element includes a second magnetic layer whose magnetization direction varies according to the direction of the rotating magnetic field at the detection position, the second magnetic layer is provided with a second magnetic anisotropy, when the angle to be detected varies with a predetermined period, each of the first and second magnetic field components contains an ideal magnetic field component and an error magnetic field component, the ideal magnetic field component varying periodically in such a manner as to trace an ideal sinusoidal curve, the error magnetic field component causes an error that varies with \u00bd the predetermined period in the detected angle value, assuming that each of the first and second magnetic field components consists only of the ideal magnetic field component when the angle to be detected varies with the predetermined period, each of the first and second detection signals contains an ideal signal component and an error signal component, the ideal signal component varying periodically in such a manner as to trace an ideal sinusoidal curve, and the error signal component results from the first and second magnetic anisotropies, and causes an error that varies with \u00bd the predetermined period in the detected angle value.

Metadata:
- Claim Count in Document: 13.0
- Percentile: 100.0
- Lexical Diversity: 2.61017
- Patent Class: 324.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15883226', '15882144', '13187942', '15455548', '13166409']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6404139376232613
- 35 USC 102 Novelty (BERT): 0.5659576087869157
- Combined Prediction Score: 0.6329683047396267
- Mean Citation Score: 387.305846
- Max Citation Score: 454.88467
- Similarity Product: 453.43709416076064

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