PATENT CLAIM ANALYSIS

Application Number: 15916234
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-07
Patent Classification: ["315", "122000"]

Abstract:
Light-emitting diodes (LEDs) generate light more efficiently than high-intensity discharge lamps or high-intensity fluorescent lamps. Driving a series of LEDs with a constant-voltage primary supply and a low-voltage LED driver keeps efficiency high. Unfortunately, LED forward voltage varies as a function of temperature: at low temperature, the forward voltage rises. Placing the LEDs in series magnifies the forward voltage increases. This makes it difficult to drive a series of LEDs at low temperature with a constant-voltage supply because the forward voltage can exceed the power supply voltage. To account for this behavior, an exemplary LED lighting fixture includes a “bypass” circuit that, when engaged, effectively removes at least one LED from each series string of LEDs to bring the total forward voltage below the power supply voltage. The low-voltage driver circuit monitors temperature, and engages the “bypass” circuit when necessary to ensure that DC voltage is not exceeded.

Claim (Index 1):
An apparatus for illuminating an environment at cold temperature, the apparatus comprising:\n at least one light emitting diode; a linear driver circuit, operably coupled to the at least one light emitting diode, to provide a drive current to the at least one light emitting diode; a sensor, in electrical and/or thermal communication with the at least one light emitting diode, to sense a variation in the drive current from a predetermined drive current caused by a decrease in temperature of the at least one light emitting diode; a processor, operably coupled to the to the sensor, to generate a drive current control signal based on at least in part on the variation measured by the sensor; and a switch, operably coupled to the processor and to the linear driver circuit, to control the drive current provided to the at least one light emitting diode by the linear drive circuit in response to the drive current control signal from the processor.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 90.0
- Lexical Diversity: 1.78723
- Patent Class: 315.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['12968789', '13970944', '14237913', '12824215', '13216763']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6966414992837477
- 35 USC 102 Novelty (BERT): 0.4907062241420613
- Combined Prediction Score: 0.6760479717695791
- Mean Citation Score: 182.773204
- Max Citation Score: 192.11046
- Similarity Product: 129.43874757423518

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