PATENT CLAIM ANALYSIS

Application Number: 16258182
Application Type: Utility
Filing Date: 2019-01
Publication Date: 2019-08
Patent Classification: ["315", "291000"]

Abstract:
A light source device includes: a semiconductor light source; a switching element connected in series to the semiconductor light source; a drive circuit that turns on the switching element when a first control signal based on a PWM signal is in a first logic state; a switching power supply circuit that supplies a current to the semiconductor light source; a current detection element that detects a current flowing through the semiconductor light source and generates a current detection signal; a current detection circuit that sample-holds a current detection signal for a period shorter than an activation period of the PWM signal, an error amplifier that generates an error signal by amplifying the difference between a current control signal and an output signal of the current detection circuit; and a control circuit that generates a second control signal for controlling the switching power supply circuit based on the error signal.

Claim (Index 9):
A semiconductor device comprising:\n a drive circuit configured to turn on a switching element that is connected in series to a semiconductor light source when a first control signal based on a PWM signal is in a first logic state; a switching power supply control circuit configured to generate a second control signal for controlling a switching power supply circuit that supplies a current to the semiconductor light source; a current detection circuit including a sample-hold circuit that sample-holds a current detection signal that is generated by detecting a current flowing through the semiconductor light source, for a period shorter than an activation period of the PWM signal, when the PWM signal is activated; and an error amplifier configured to generate an error signal by amplifying the difference between a current control signal and an output signal of the current detection circuit, the switching power supply control circuit is configured to generate the second control signal based on the error signal.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 99.0
- Lexical Diversity: 2.67797
- Patent Class: 315.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15888027', '12691984', '12688152', '14553178', '13089694']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6715666917560632
- 35 USC 102 Novelty (BERT): 0.488572935870359
- Combined Prediction Score: 0.6532673161674929
- Mean Citation Score: 210.63071400000004
- Max Citation Score: 221.75461
- Similarity Product: 180.96443405925453

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