Keyboard backlight control
US12408251B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2023 |
| Grant date | Sep 2, 2025 |
| Priority date | — |
| Expiry date | Jan 24, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/15
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An information handling system includes keyboard backlights, an embedded controller, and a processor. The embedded controller communicates with the keyboard backlights. In response to an activate keyboard backlights signal, the embedded controller turns on the keyboard backlights. In response to a deactivate keyboard backlights signal, the embedded controller turns off the keyboard backlights. The processor communicates with the embedded controller. The processor determines whether an ultrasonic waveform is received. In response to the ultrasonic waveform being received, the processors provide the deactivate keyboard backlights signal to the embedded controller. In response to the ultrasonic waveform not being received, the processor provides the activate keyboard backlights signal to the embedded controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.