Security system storage of persistent data
US9767676B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2012 |
| Grant date | Sep 19, 2017 |
| Priority date | — |
| Expiry date | Nov 17, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0679
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A security system including devices generating persistent data, a local control system (LCS) including a microprocessor and non-volatile memory and receiving persistent data from the devices, and a server remote from the LCS. The remote server is in communication with the LCS microprocessor which periodically transmits logical portions of persistent data (each including a timestamp) to the remote server where it is saved. The microprocessor also periodically saves the persistent data portions in LCS non-volatile memory less frequently than the persistent data portions are periodically saved in the remote data storage, and saves the timestamp in the local data storage for each persistent data portion saved only at the remote server. When rebooting the LCS, the microprocessor retrieves from the remote data storage only the persistent data portions having timestamps subsequent to the timestamp saved in the local data control system non-volatile memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.