PATENT CLAIM ANALYSIS

Application Number: 15903695
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-07
Patent Classification: ["307", "104000"]

Abstract:
A detection method for use in a primary unit of an inductive power transfer system, the primary unit being operable to transmit power wirelessly by electromagnetic induction to at least one secondary unit of the system located in proximity to the primary unit and/or to a foreign object located in said proximity, the method comprising: driving the primary unit so that in a driven state the magnitude of an electrical drive signal supplied to one or more primary coils of the primary unit changes from a first value to a second value; assessing the effect of such driving on an electrical characteristic of the primary unit; and detecting in dependence upon the assessed effect the presence of a said secondary unit and/or a foreign object located in proximity to said primary unit.

Claim (Index 1):
A primary unit for use in an inductive power transfer system, the inductive power transfer system including at least one secondary unit, the primary unit being operable to transmit power wirelessly to one or more of a) the at least one secondary unit and b) a foreign object located in proximity to the primary unit, the at least one secondary unit including a regulator with an operating threshold, the primary unit comprising:\n a primary configured to transmit power wirelessly to the at least one secondary unit; driver circuitry operably coupled to said primary, said driver circuitry operable to drive said primary to transmit power sufficient to operate the regulator at or above the operating threshold, said driver circuitry operable to drive said primary so that, in a driven state, a magnitude of an electrical drive signal supplied to said primary changes from a first value to a second value, wherein power transmitted at said first value is sufficient to operate the regulator at or above the operating threshold and power transmitted at said second value is sufficient to operate the regulator at or above the operating threshold; sensor circuitry configured to sense an electrical characteristic of said primary unit, said sensor circuitry configured to generate a first measurement of said electrical characteristic at said first value and to generate a second measurement of said electrical characteristic at said second value; and detection circuitry configured to detect, based on a difference between said first measurement and said second measurement, presence of one or more of a) the at least one secondary unit including the regulator and b) the foreign object located in proximity to said primary unit.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 88.0
- Lexical Diversity: 2.02941
- Patent Class: 307.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['12809119', '14278683', '15083955', '12556121', '13236066']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8179349143417388
- 35 USC 102 Novelty (BERT): 0.5012074055084756
- Combined Prediction Score: 0.7862621634584125
- Mean Citation Score: 266.290076
- Max Citation Score: 313.6946700000001
- Similarity Product: 285.5825895509936

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

Dataset: test