PATENT CLAIM ANALYSIS

Application Number: 15887802
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-06
Patent Classification: ["315", "077000"]

Abstract:
A lighting circuit for a light source includes a drive circuit that supplies a lamp current to the light source, detects the lamp current, and executes feedback control such that the lamp current approaches a target current, and an overcurrent protection circuit that is inserted between the drive circuit and the light source and that restricts the lamp current flowing into the light source so that the lamp current does not exceed an overcurrent threshold value. The overcurrent protection circuit includes a transistor, an inductor, a rectifier, a current sensor that generates a current detection signal according to the lamp current, and an overcurrent protection controller that controls ON/OFF of the transistor based on the current detection signal and the overcurrent threshold value. The transistor, the inductor and the rectifier are disposed in a T-shape.

Claim (Index 16):
A lighting circuit for a light source, the lighting circuit comprising:\n a drive circuit that supplies a lamp current to the light source, detects the lamp current, and executes feedback control such that the lamp current approaches a target current; and an overcurrent protection circuit that is inserted between the drive circuit and the light source and that restricts the lamp current flowing into the light source so that the lamp current does not exceed an overcurrent threshold value, wherein the overcurrent protection circuit comprises:\n a transistor, \n an inductor, \n a rectifier, \n a current sensor that generates a current detection signal according to the lamp current, and \n an overcurrent protection controller that controls ON/OFF of the transistor based on the current detection signal and the overcurrent threshold value, \n wherein the transistor, the inductor and the rectifier are disposed in a T-shape, wherein, if the current detection signal exceeds a threshold value level that is determined according to the overcurrent threshold value, the overcurrent protection controller immediately switches the transistor OFF, and wherein, if the current detection signal falls below the threshold value level, the overcurrent protection controller switches the transistor ON after a predetermined delay time elapses.

Metadata:
- Claim Count in Document: 29.0
- Percentile: 88.0
- Lexical Diversity: 2.47458
- Patent Class: 315.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14855439', '15225332', '14950881', '15168645', '15672958']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7088488501995454
- 35 USC 102 Novelty (BERT): 0.5681025726351567
- Combined Prediction Score: 0.6947742224431065
- Mean Citation Score: 273.22022400000003
- Max Citation Score: 436.14832
- Similarity Product: 404.5219037299156

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