PATENT CLAIM ANALYSIS

Application Number: 16103860
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2019-02
Patent Classification: ["327", "109000"]

Abstract:
A supply voltage generating circuit for generating a supply voltage signal to supply the active elements of an AC-DC voltage converter. The supply voltage generating circuit has a charging switch, a charging diode and a charging capacitor. When a main switch of the AC-DC voltage converter is turned on, the charging switch is turned on. Primary current flows through the charging switch and the main switch to the logic ground. When the main switch is turned off and the voltage across the charging capacitor is smaller than a charging threshold, the charging switch is kept on for a period of time and the primary current flows through the charging switch and the charging diode to the charging capacitor. When the period of time is expired or the supply voltage signal is larger than the charging threshold signal, the charging switch is turned off.

Claim (Index 14):
An integrated circuit for generating a supply voltage signal of an ac-dc voltage converter, wherein the ac-dc voltage converter comprises a transformer, a charging capacitor and a charging switch, comprising:\n an input pin, configured to receive a main control signal; an output pin, wherein the charging capacitor is coupled between the output pin and a logic ground; a switching pin, coupled to a first terminal of the charging switch, wherein a second terminal of the charging switch is coupled to a primary winding of the transformer; a control pin, coupled to a control terminal of the charging switch; a ground pin, connected to a logic ground; a main switch, having a first terminal coupled to the ground pin, a second terminal coupled to the switch pin, and a control terminal coupled to the input pin to receive the main control signal, wherein an input voltage signal of the ac-dc voltage converter is converted to an output voltage signal of the ac-dc voltage converter through controlling the main switch on and off; a charging diode, having an anode coupled to the switching pin, and a cathode coupled to the output pin; and a control module, wherein when the main switch is turned on, the control module is configured to turn the charging switch on, a primary current of the primary winding flows through the charging switch, the switching pin, the main switch and the ground pin to the logic ground, and wherein when the main switch is turned off and the supply voltage signal is smaller than a charging threshold signal, the control module is configured to keep the charging switch on for a period of time, and the primary current flows through the charging switch, the switching pin, the charging diode and the output pin to the charging capacitor, and wherein when the period of time is expired or the supply voltage signal is larger than the charging threshold signal, the control module is configured to turn the charging switch off.

Metadata:
- Claim Count in Document: 14.0
- Percentile: 96.0
- Lexical Diversity: 3.1875
- Patent Class: 327.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13966248', '13360844', '14024554', '14859102', '14973456']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7735604599372596
- 35 USC 102 Novelty (BERT): 0.471321433725806
- Combined Prediction Score: 0.7433365573161144
- Mean Citation Score: 216.084738
- Max Citation Score: 220.0141
- Similarity Product: 185.3532046923817

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