Video intercom device
US9549151B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2016 |
| Grant date | Jan 17, 2017 |
| Priority date | — |
| Expiry date | Jan 7, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/186
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided is a video intercom device for suppressing electric power consumption. The video intercom device adopts a configuration where the video intercom device switches between a first communication method by which an indoor master unit or a telephone master unit and a front door slave unit performs wireless communication under a predetermined condition, and a second communication method with electric power consumption lower than that of the first communication method, the first communication method is switched to the second communication method when the indoor master unit registers the front door slave unit, and the second communication method is switched to the first communication method when a telephone master unit registers the front door slave unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.