PSTN appliance security system with reduced PSTN traffic loading
US6122350A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1998 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Mar 16, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/82
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A security system includes a service platform attached to a telephone network and accessible through the network. The platform is responsive to calling line identity signals (CLI) provided by the network operator to identify individual telephone lines from which calls originate and in response thereto to transmit a data list identifying protected apparatus at customer premises and release codes therefor. A home control center is responsive to signals received over a mains electricity line from protected apparatus to transmit to the apparatus a release code, the apparatus including a security module responsive to receipt of the respective release code to supply power to operational circuits of the apparatus. If a valid release code is not received from the home control center on request from the apparatus then power is denied to the apparatus. The service platform supplies a house code and a specific apparatus code and location code to the home control center for transmission to a protected apparatus on first connection of mains power thereto. Subsequent to the security protection being provided, the apparatus will only operate when connected in its home environment until such time …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.