PATENT CLAIM ANALYSIS

Application Number: 16406633
Application Type: Utility
Filing Date: 2019-05
Publication Date: 2019-08
Patent Classification: ["315", "297000"]

Abstract:
The power supply device includes a power switch including one terminal to which an input voltage is transferred; an inductor including one terminal connected to another terminal of the power switch; a diode connected between a ground and a floating ground; a sensing resistor connected between the floating ground and the one terminal of the inductor. A switch controller compares a modulation sensing voltage depending on a sensing voltage generated from the sensing resistor with a high peak reference and a low peak reference when a LED string is connected between an inductor and the ground. The switch controller controls a switching operation of a power switch according to the comparison result. The high peak reference and the low peak reference are references for controlling an upper limit and a lower limit of an LED current flowing through the LED string, respectively.

Claim (Index 5):
The switch controller circuit of  claim 4 , wherein the digital sine-wave generator comprises:\n a zero crossing detector configured to receive the modulation sensing voltage and the second reference, detect a period when the modulation sensing voltage is less than the second reference as the zero crossing detection period and generate a zero crossing detection signal according to the detected result; a clock generator configured to receive the zero crossing detection signal, estimate consecutive zero crossing times based on the zero crossing detection signal, set an interval between the estimated consecutive zero crossing times as the sine wave period, and generate a clock signal having a reference number of rising edges during the sine wave period; a sine-wave generator configured to generate a first digital signal and a second digital signal to be increased and reduced corresponding to the reference number of times according to the clock signal during the sine wave period; and a digital-to-analog converter configured to generate the first reference and the second reference by convert the first digital signal and the second digital signal into respective analog voltage signals.

Metadata:
- Claim Count in Document: 4.0
- Percentile: 100.0
- Lexical Diversity: 2.30769
- Patent Class: 315.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['13889789', '13028628', '14324704', '13965485', '13111779']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7363006002509659
- 35 USC 102 Novelty (BERT): 0.601403354905422
- Combined Prediction Score: 0.7228108757164116
- Mean Citation Score: 297.729186
- Max Citation Score: 508.91794
- Similarity Product: 490.1501604170476

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