Pulse width correction for LED display driver
US9390647B2 · kind B2 · utility
4Cited by
0References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2014 |
| Grant date | Jul 12, 2016 |
| Priority date | — |
| Expiry date | Jul 21, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/06
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The LED display system comprises an array of LEDs and a driver circuit that employs a scrambled PWM generator. The scrambled PWM generator is configured to generate a plurality of PWM pulses. The PWM pulses are distributed into a corresponding number of refresh segments. The driver circuit is configured so that one or more of PWM pulses are extendable by a certain offset value so that the pulse width in the corresponding refresh segments is wide enough for the LED to emit light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.