PATENT CLAIM ANALYSIS

Application Number: 15772271
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-12
Patent Classification: ["307", "104000"]

Abstract:
A wireless power transmitter ( 101 )) comprises a resonance circuit ( 201 ) comprises a transmitter inductor ( 103 ) for generating a power transfer signal for wirelessly transferring power to the power receiver ( 105 ). A driver ( 203 ) generates a drive signal for the resonance circuit ( 201 ) and a resonance modification circuit ( 505 ) aligns the resonance frequency of the resonance circuit ( 201 ) with the drive frequency of the drive signal by slowing a state change for resonance circuit ( 201 ) for a fractional time interval of cycles of the drive signal. A load estimator ( 509 ) generates a load estimate reflecting an equivalent load resistor for the transmitter inductor ( 103 ) reflecting the loading of the power transfer signal. A drive frequency adapter ( 511 ) then adapts the drive frequency in response to the load estimate. The invention may in particular improve load modulation communication quality.

Claim (Index 15):
A wireless power transfer system comprising power transmitter and a power receiver, the power transmitter comprising:\n a resonance circuit comprising a capacitive impedance and an inductive impedance, the inductive impedance comprising a transmitter inductor for generating a power transfer signal for wirelessly transferring power to the power receiver; a driver generating a drive signal for the resonance circuit, the drive signal having a drive frequency; a resonance modification circuit for aligning the resonance frequency of the resonance circuit with the drive frequency by slowing a state change for at least one of the capacitive impedance and the inductive impedance for a fractional time interval of each of at least a plurality of cycles of the drive signal, a load estimator for generating a load estimate reflecting an equivalent load resistor for the transmitter inductor reflecting a loading of the power transfer signal; and a drive frequency adapter for adapting the drive frequency in response to the load estimate; wherein the drive frequency adapter is arranged to adapt the drive frequency to be further away from a resonance frequency of a power receiving resonance circuit of the power receiver for a load estimate indicative of a first equivalent parallel load resistance than for a load estimate indicative of a second equivalent parallel load resistance, the first equivalent parallel load resistance being lower than the second equivalent parallel load resistance.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 91.0
- Lexical Diversity: 2.49254
- Patent Class: 307.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15506119', '15503157', '15306575', '15501633', '15773421']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.831842869839336
- 35 USC 102 Novelty (BERT): 0.520431608630887
- Combined Prediction Score: 0.8007017437184911
- Mean Citation Score: 322.38521000000014
- Max Citation Score: 360.51157
- Similarity Product: 343.2291983329618

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