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 1):
A switch controller circuit comprising:\n a sensing circuit to receive a sensing voltage corresponding to a load current and generate a modulation sensing voltage using the sensing voltage, the load current being generated by rectifying an Alternating Current (AC) input voltage; a digital sine-wave generator to:\n detect, using the modulation sensing voltage, a zero crossing detection period signal, \n determine a zero crossing time during the detected zero crossing detection, \n determine a sine wave period according to the zero crossing time, and \n generate first and second references based on a full-wave rectification sine-wave having the sine wave period; and \n a switch control signal generation circuit to generate a switch control signal using the modulation sensing voltage, the first reference, and the second reference, wherein the first reference has a first waveform including an AC component, the AC component of the first waveform having a phase synchronized with a phase of the AC input voltage, wherein the second reference is less than the first reference and has a second waveform including an AC component, the AC component of the second waveform having a phase synchronized with the phase of the AC input voltage.

Metadata:
- Claim Count in Document: 4.0
- Percentile: 100.0
- Lexical Diversity: 2.30769
- Patent Class: 315.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13889789', '13028628', '14324704', '13965485', '13111779']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7166989542964501
- 35 USC 102 Novelty (BERT): 0.587506633162351
- Combined Prediction Score: 0.7037797221830403
- Mean Citation Score: 297.729186
- Max Citation Score: 508.91794
- Similarity Product: 432.2291768870592

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