LED driving circuits
US10455653B1 · kind B1 · utility
13Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2019 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | Jan 23, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/064
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An LED driving circuit for illuminating a first LED unit is provided. The LED driving circuit includes: a data latch circuit, a current source, and a PWM circuit. The data latch circuit latches a data signal according to a first latch signal to generate a first control signal. The current source generates a constant current. The PWM circuit periodically passes the constant current through the first LED unit according to the first control signal and an enable signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.