PATENT CLAIM ANALYSIS

Application Number: 15945867
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-10
Patent Classification: ["318", "696000"]

Abstract:
A control device for a stepping motor capable of suppressing a level of sound generated in association with driving of the motor is provided. The control device for a stepping motor is configured to, from when the hold period is started (t 10 ) until the hold period ends (t 12 ), gradually increase an absolute value of the excitation current in the A phase such that the amount of change in the excitation current per unit time is smaller than or equal to a first predetermined value. From when the hold period is started (t 10 ) until a predetermined time elapses (t 11 ), an absolute value of the excitation current in the B phase is gradually increased such that the amount of change in the excitation current per unit time is smaller than or equal to the first predetermined value. By the time the hold period ends (t 12 ) after the predetermined time has elapsed (t 11 ), the excitation current in the B phase is caused to reach zero. When the hold period ends (t 12 ), one-phase excitation operation of the stepping motor is started such that the excitation current flows in the one phase first with the same polarity as at the end of the hold period.

Claim (Index 2):
The control device for the stepping motor according to  claim 1 , wherein\n after the predetermined time has elapsed, the hold control unit gradually decreases the absolute value of the excitation current in the other phase such that the amount of change in the excitation current per unit time is smaller than or equal to a second predetermined value.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 91.0
- Lexical Diversity: 2.8875
- Patent Class: 318.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14301579', '13221357', '14332987', '12891630', '13981391']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6896043477205296
- 35 USC 102 Novelty (BERT): 0.501630484412851
- Combined Prediction Score: 0.6708069613897617
- Mean Citation Score: 214.001018
- Max Citation Score: 276.3211
- Similarity Product: 220.0156320957661

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