PATENT CLAIM ANALYSIS

Application Number: 16006522
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-12
Patent Classification: ["324", "307000"]

Abstract:
Methods, devices, and apparatus for determining an input voltage of an inverter circuit in a magnetic resonance imaging system are provided. In one aspect, a method includes: determining a maximum inductance voltage value corresponding to a maximum current value of a current sequence according to a relationship between inductance voltage and inductance current of a gradient coil, determining a minimum DC voltage value corresponding to the maximum inductance voltage value according to a relationship between output voltage and input voltage of the inverter circuit, and controlling the input voltage into an input terminal of the inverter circuit to have the minimum DC voltage value when the current sequence is input into a control terminal of the inverter circuit. The inverter circuit is configured to generate an AC voltage based on the input voltage and the current sequence and output the AC voltage to the gradient coil.

Claim (Index 13):
A magnetic resonance imaging system comprising:\n a gradient power amplifier comprising:\n a DC power supply configured to output a DC voltage; \n an inverter circuit connected to the DC power supply at an input terminal and configured to generate an AC voltage according to the DC voltage and a current sequence; \n a spectrum analyzer connected to a control terminal of the inverter circuit and configured to output the current sequence to the inverter circuit; a gradient coil connected to an output terminal of the inverter circuit and configured to receive the AC voltage from the inverter circuit; and a device for determining an input voltage of the inverter circuit, the device comprising:\n at least one processor; \n at least one non-transitory machine-readable storage medium coupled to the at least one processor having machine-executable instructions stored thereon that, when executed by the at least one processor, cause the at least one processor to perform operations comprising:\n determining a maximum inductance voltage value corresponding to a maximum current value of the current sequence according to a relationship between inductance voltage and inductance current of the gradient coil; and \n determining a minimum DC voltage value corresponding to the maximum inductance voltage value according to a relationship between output voltage and input voltage of the inverter circuit; and \n \n a controller configured to control the input voltage into the input terminal of the inverter circuit to have the minimum DC voltage value when the current sequence is input into the control terminal of the inverter circuit.

Metadata:
- Claim Count in Document: 6.0
- Percentile: 94.0
- Lexical Diversity: 2.7193
- Patent Class: 324.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['12667788', '15319715', '12569138', '14890882', '11993818']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5367046688979757
- 35 USC 102 Novelty (BERT): 0.4761709515564229
- Combined Prediction Score: 0.5306512971638205
- Mean Citation Score: 219.564878
- Max Citation Score: 222.6063
- Similarity Product: 189.06215044546727

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

Dataset: test