PATENT CLAIM ANALYSIS

Application Number: 16175193
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-02
Patent Classification: ["363", "021010"]

Abstract:
A switching power supply apparatus includes a switching device and a switching power supply control circuit for converting an AC source voltage to a DC voltage. A comparison circuit in the switching power supply control circuit produces an H-level output signal when its non-inverted input voltage exceeds a voltage value during each off-state period of the switching device. A delay circuit outputs a pulse signal after a predetermined delay time from detecting the H-level signal. This pulse signal indicates detection of a bottom point of drain voltage of the switching device. Since the output of the delay circuit is directly connected to the set input terminal S of a flip-flop, the switching device is surely turned on, without bottom skip, upon detection of the bottom point of its drain voltage.

Claim (Index 4):
A switching power supply apparatus comprising:\n a first converter, including a switching device circuit having terminals, that converts an input AC source voltage to a first DC voltage while performing power factor correction; a second converter that converts the first DC voltage to a second DC voltage; and a switching power supply control circuit comprising: a bottom detection circuit that detects a bottom point of a voltage across the terminals of the switching device included in the first converter, and provides an output signal and a control signal generation circuit that generates a control signal for the switching device upon receipt from the bottom detection circuit of the output signal indicating the detected bottom point, the generated control signal causing the switching device to turn on when the voltage across the terminals of the switching device corresponds to the bottom point.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 97.0
- Lexical Diversity: 2.0597
- Patent Class: 363.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15965085', '11089331', '13089920', '13235571', '10794062']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8093691693238714
- 35 USC 102 Novelty (BERT): 0.4643310852472418
- Combined Prediction Score: 0.7748653609162084
- Mean Citation Score: 189.42922
- Max Citation Score: 193.86087
- Similarity Product: 160.64724660497183

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