Communication system for accessing shared entrance of multiple dwelling house
US7183894B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2003 |
| Grant date | Feb 27, 2007 |
| Priority date | — |
| Expiry date | Apr 30, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/2803
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Apparatus for sharing entrance of a multiple dwelling house. The apparatus controls the visit and/or calling of a door-to-door sales agent. The apparatus automatically receives delivery of goods addressed to one of the dwelling units regardless of the presence or absence of a resident. Registered agents, such as residents and agents granted access, use an IC card that carries identification information to gain access of a shared entrance. For each dwelling unit, a registered agent likewise uses the IC card to send family identification information or agent identification information to a door phone apparatus, thereby unlocking the door lock of the entrance for a family member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.