LED control method and system
US12342431B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2022 |
| Grant date | Jun 24, 2025 |
| Priority date | — |
| Expiry date | Jan 21, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present application provides an LED control system, including an LED driver chip, a thermistor independent of the LED driver chip, and a matching resistor of the thermistor, wherein different thermistors correspond to different matching resistors; the LED driver chip and the matching resistor are configured to generate corresponding LED control targets according to different thermistors; wherein the upper and lower limits of the control targets are preset by the LED driver chip regardless of the thermistor; and the slope of the change of control target over the change of temperature is fitted with the slope of the change of thermistor resistance over the change of temperature, and the upper and lower limits of the control target remains the same for different choices of thermistors. The present application also provides a corresponding LED control method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.