PATENT CLAIM ANALYSIS

Application Number: 16039126
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-01
Patent Classification: ["315", "291000"]

Abstract:
The present disclosure discloses a light-emitting diode (LED) driver comprising a controller and a main circuit. The controller is configured to receive a dimming signal for dimming an LED load and use a current hysteresis control to generate a control signal, wherein a hysteresis width of the current hysteresis control varies with the dimming signal. The main circuit comprises a front-end stage configured to receive an AC input voltage and output a DC bus voltage, and a back-end stage configured to receive the bus voltage and responsive to the control signal, output a desired drive current through output terminals to the LED load so as to produce a target illumination intensity. The present disclosure widens the dimming depth of analog dimming in the LED dimming technology, achieves deep dimming and satisfies good dimming linearity in the entire dimming range.

Claim (Index 3):
The LED driver as claimed in  claim 2 , wherein the controller comprises a first module and a second module and the back-end stage further comprises an inductor (L 1 );\n wherein the first module is configured to determine an upper limit current (I peak ) and a lower limit current (I valley ) of the current hysteresis control based on the dimming signal (DS); and wherein the second module is configured to detect an inductor current (I L ) flowing through the inductor (L 1 ) and switch on or switch off the controllable switch (SW 1 ) based on the detected inductor current (I L ), when the inductor current (I L ) reaches the upper limit current (I peak ), the controllable switch (SW 1 ) is switched off and when the inductor current (I L ) reaches the lower limit current (I valley ), the controllable switch (SW 1 ) is switched on.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 95.0
- Lexical Diversity: 2.09859
- Patent Class: 315.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15510689', '13884960', '14264477', '14841832', '14841806']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.723617796798608
- 35 USC 102 Novelty (BERT): 0.4806727939459911
- Combined Prediction Score: 0.6993232965133463
- Mean Citation Score: 181.392138
- Max Citation Score: 194.3801
- Similarity Product: 149.77951898621322

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

Dataset: test