Vocal cord stroboscopy
US10835116B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2018 |
| Grant date | Nov 17, 2020 |
| Priority date | — |
| Expiry date | Jun 26, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/555
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video laryngoscope system includes an imager, an audio processing circuitry, a light source, an exposure controller, and a line gain module. The imager generates a first frame and a second frame of a plurality of video frames using a rolling shutter. The audio processing circuitry determines a base frequency of a vocalization based on an audio signal. The light source generates pulses of light based on the base frequency. The exposure controller adjusts a duration and position in time of the pulses based on the base frequency during the first and second frames. The line gain module selectively applies a line gain to at least a portion of the first frame and a portion of the second frame based on a gap time between the first frame and the second frame and the duration and position in time of the pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.