Method for filtering noise of lens operation and video recording system
US11758287B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2022 |
| Grant date | Sep 12, 2023 |
| Priority date | — |
| Expiry date | Mar 3, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/9265
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for filtering noise of lens operation is applicable to a controller being communicably connected with a video recorder. The method includes: sending, by the controller, a recording instruction configured to control the video recorder to perform a video recording and an audio recording; sending, by the controller, a lens operation instruction configured to control a lens of the video recorder to perform an operation; reading, by the controller, an inverted noise signal associated with the operation receiving, by the controller, an audio recording signal generated by the video recorder when the video recorder performs the operation; and synthesizing, by the controller, the audio recording signal and the inverted noise signal to output a synthesized audio signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.