PATENT CLAIM ANALYSIS

Application Number: 15754295
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["318", "696000"]

Abstract:
Provided is a drive circuit for a two-coil stepper motor, including: a rotor; a stator including first, second, and third stator magnetic-pole portions; a coil A to be magnetically coupled to the first stator magnetic-pole portion and the third stator magnetic-pole portion; a coil B to be magnetically coupled to the second stator magnetic-pole portion and the third stator magnetic-pole portion; a drive pulse generation circuit configured to output a drive pulse; a detection pulse generation circuit configured to output a detection pulse for detecting counter-electromotive currents generated in the coil A and the coil B; and a rotation detection circuit configured to receive a detection signal generated due to the detection pulse as input to determine whether or not the rotor has rotated.

Claim (Index 17):
An electronic watch, comprising: a two-coil stepper motor and a drive circuit for the two-coil stepper motor;\n the two-coil stepper motor, comprising: a rotor, which is magnetized into two poles or more in a radial direction of the rotor; a stator including:\n a first stator magnetic-pole portion and a second stator magnetic-pole portion, which are formed so as to oppose to each other through intermediation of the rotor; and \n a third stator magnetic-pole portion, which is formed between the first stator magnetic-pole portion and the second stator magnetic-pole portion so as to face the rotor; \n a first coil, which is configured to be magnetically coupled to the first stator magnetic-pole portion and the third stator magnetic-pole portion; and wherein a second coil, which is configured to be magnetically coupled to the second stator magnetic-pole portion and the third stator magnetic-pole portion, the stator has a slit for magnetically separating the third stator magnetic-pole portion and each of the first stator magnetic-pole portion and the second stator magnetic-pole portion from each other, and an angle formed between a line connecting a center of the rotor to the slit and a center line of the third stator magnetic-pole portion, which passes through the center of the rotor, is 75\u00b0\u00b120\u00b0, the drive circuit for the two-coil stepper motor, comprising: a drive pulse generation circuit, which is configured to output a drive pulse for driving the rotor toward the first coil or toward the second coil; a detection pulse generation circuit, which is configured to output, to at least one of the first coil or the second coil, a detection pulse for detecting a counter-electromotive current generated in at least one of the first coil or the second coil, during or after the driving of the rotor due to the drive pulse; and wherein a rotation detection circuit, which is configured to receive a detection signal generated in response to the detection pulse, as input to detect whether or not the rotor has rotated.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 88.0
- Lexical Diversity: 2.54717
- Patent Class: 318.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15538658', '13578929', '13500829', '12921056', '15126581']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.693842337749817
- 35 USC 102 Novelty (BERT): 0.5616692813647235
- Combined Prediction Score: 0.6806250321113076
- Mean Citation Score: 317.813548
- Max Citation Score: 443.1131
- Similarity Product: 403.0778173006415

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test