PATENT CLAIM ANALYSIS

Application Number: 16278393
Application Type: Utility
Filing Date: 2019-02
Publication Date: 2019-06
Patent Classification: ["318", "466000"]

Abstract:
An apparatus for detecting a position of a rotor of a DC motor with N phases having a plurality of windings. The apparatus includes circuitry to couple at least two of the windings between a supply voltage and a reference voltage according to a first current path and allow the current stored in the two windings to be discharged through a second current path. The circuitry is configured to force the at least two windings at a short circuit condition in the second current path. The apparatus also includes a measurement circuit configured to measure the time period of discharging the current stored in the two windings and a rotor position detector for detecting the rotor position based on the measured time period.

Claim (Index 18):
A method for detecting a rotor position of a rotor of an electric motor having a plurality of windings, the method comprising:\n charging a current passing through two windings of the plurality of windings via a first current path by driving a first half-bridge coupled to the electric motor and a second half-bridge coupled to the electric motor using pulse width modulation, wherein the first half-bridge is coupled between a supply node and a reference node, and wherein the second half-bridge is coupled between the supply node and the reference node; discharging the current stored in the two windings via a second current path; determining a time constant of the two of the plurality of windings by measuring a time between a peak value of the current and a second value of the current using a current sense element coupled between the second half-bridge and the reference node; and detecting the rotor position of the rotor based on the determined time constant.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 99.0
- Lexical Diversity: 2.18966
- Patent Class: 318.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14641956', '15277684', '13242847', '14183642', '10285362']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6490088395690267
- 35 USC 102 Novelty (BERT): 0.5918741039365456
- Combined Prediction Score: 0.6432953660057786
- Mean Citation Score: 332.565894
- Max Citation Score: 492.7994
- Similarity Product: 460.5150368414878

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