Lamp system
AssigneeHyundai Mobis Co., Ltd.
InventorMyeong Je Kim
Life of this patent
Estimating the term…
Abstract
A lamp system is provided. The lamp system includes: a light source driver module to provide driving power, a light source array module including a light source, among light sources, connected in parallel with the driving power, a switch connected in series with the light source to control an operation of the light source; and a processor to control the switch, control the light source driver module to provide the driving power, and control the driving power based on a voltage across at least some of the light sources.
Claims15
A lamp system comprising:
- a light source driver module configured to provide a driving power;
- a light source array module including a light source, among a plurality of light sources, connected in parallel with the driving power;
- a switch connected in series with the light source to control an operation of the light source;
- and
- a processor configured to:
- control the switch;
- control the light source driver module to provide the driving power;
- control the driving power based on a voltage across at least some of the plurality of light sources;
- measure the voltage across the plurality of light sources;
- and
- control the driving power by including a predetermined margin value in a maximum value among the measured voltages across the light sources.
A processor-implemented method for controlling a lamp system, the method comprising:
- providing driving power;
- providing a light source, among a plurality of light sources, connected in parallel with the driving power;
- providing a switch connected in series with the light source to control the light source;
- controlling the switch;
- controlling a light source driver module to provide the driving power;
- and
- controlling the driving power based on a voltage across at least some of the plurality of light sources;
- measuring the voltage across the plurality of light sources;
- and
- controlling the driving power by including a predetermined margin value in a maximum value among the measured voltages across the light sources.
A lamp system comprising:
- a light source array including a plurality of light sources connected in parallel;
- a plurality of switches, each connected in series with a respective light source to control current flow through the respective light source;
- a driver configured to supply driving power to the light source array;
- a processor configured to:
- measure forward voltages across a predetermined subset of the plurality of light sources, and
- dynamically adjust the driving power supplied to the light source array based on the measured forward voltages using a control method comprising hysteresis, wherein the control method applies different adjustment rules depending on whether the maximum measured forward voltage increases or decreases.
Dependencies are inferred from the claim text.