PATENT CLAIM ANALYSIS

Application Number: 15755014
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2019-08
Patent Classification: ["315", "294000"]

Abstract:
A LED driving circuit and method for balancing efficiency and a power factor. The circuit comprises a voltage input module, an LED load, a constant current control module and a current turn-off slope control module for adjusting the turn-off slope of the current flowing through the LED load, such that a compromise between efficiency and power factor is achieved. When an input voltage is higher than a setting voltage, the current flowing through the LED load is turned off, such that the power consumption is reduced; in addition, the efficiency and power factor are balanced by adjusting the turn-off slope of the current. According to the present invention, a compensation capacitor is used to control the average current in an alternating current period and to limit peak current, thereby implementing constant power output within a wide range of input voltage.

Claim (Index 2):
The LED driving circuit for balancing efficiency and a power factor according to  claim 1 , characterized in that the current turn-off slope control module comprises a first resistor, a second resistor, a constant current source and an over-voltage detecting unit; one terminal of the first resistor is connected to the output terminal of the LED load, and another terminal of the first resistor is connected to the second resistor and is then grounded; one terminal of the constant current source is connected between the first resistor and the second resistor, and another terminal of the constant current source is grounded; the over-voltage detecting unit is connected between the first resistor and the second resistor to generate a turn-off signal; a turn-off slope of the current flowing through the LED load is adjusted through the first resistor, the second resistor and the constant current source.

Metadata:
- Claim Count in Document: 15.0
- Percentile: 88.0
- Lexical Diversity: 2.21739
- Patent Class: 315.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15755020', '13571813', '13696679', '10879315', '15227223']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7325370723050165
- 35 USC 102 Novelty (BERT): 0.5162350609277226
- Combined Prediction Score: 0.7109068711672871
- Mean Citation Score: 232.229048
- Max Citation Score: 323.08615
- Similarity Product: 299.7263804059326

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