Intercom device and control system
US12425550B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2022 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Jul 1, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04803
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A building entrance device (10B) of an intercom device includes a touch operable aerial display (100) for displaying an aerial image (G1, G2) toward a visitor (W1, W2), and a control unit (110). The touch operable aerial display (100) includes: a display device (101) for emitting light; an optical member (102) for reflecting and transmitting light so as to form the aerial image (G1, G2) in a predetermined space; and a detection unit (103) for detecting an operation input of the visitor (W1, W2) to the aerial image (G1, G2). The control unit (110) changes at least one from among a display position, a display angle of the aerial images (G1, G2), and a display mode of a call operation acceptance unit included in the aerial images (G1, G2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.