Security System Storage of Persistent Data

• US 20130179625A1
• Filed: 01/11/2012
• Published: 07/11/2013
• Est. Priority Date: 01/11/2012
• Status: Active Grant

• Current Assignee: Ademco Inc. (Resideo Technologies, Inc.)
• Original Assignee: Honeywell International Inc.
• Inventors: Stanton, Dougal, Probin, Robert John, Crisp, Martin, Osborne, Kenneth, McWhirter, Alan Robert
• Granted Patent: US 9,767,676 B2
• Time in Patent Office: Days
• US Class Current: 711/103
• CPC Class Codes: G06F 3/065 Replication mechanisms
• CPC Class Codes: G06F 3/0679 Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]
• CPC Class Codes: G08B 25/14 Central alarm receiver or annunciator arrangements
• CPC Class Codes: G08B 29/16 Security signalling or alarm systems, e.g. redundant systems

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.

Claims

1. A method of storing persistent data for a security system having a local control panel in communication with a remote server, said local control panel having local data storage and said remote server having storage remote from said local data storage, comprising the steps of:

periodically saving logical portions of existing persistent data at the remote server,

periodically saving said logical portions of existing persistent data at said local data storage,

said periodically saving at said local data storage being performed less frequently than said periodically saving at said remote server, and

said logical portions of current persistent data each including a distinguishing data element;

saving said distinguishing data element in the local data storage of each logical portion of existing persistent data saved only at the remote server; and

reconstructing the persistent data on the local control panel after rebooting the local control panel, wherein during said reconstructing step only said logical portions of existing persistent data having distinguishing data elements subsequent to said distinguishing data element saved at said local data storage are written from said remote storage and saved at said local data storage.

2. The data storing method of claim 1, wherein said distinguishing data elements are time stamps.

3. The data storing method of claim 1, wherein said local data storage comprises non-volatile memory.

4. The data storing method of claim 3, wherein said local data storage comprises flash memory.

5. The data storing method of claim 1, wherein said remote data storage comprises at least one of RAM and EEPROM memory devices.

6. The data storing method of claim 5, wherein said local data storage comprises flash memory.

7. A security system, comprising:

security devices generating persistent data;

a local control system receiving said persistent data from said security devices, said local control system including a microprocessor and a non-volatile memory;

a server remote from said local control system, said remote server having remote data storage and being in communication with said local control system microprocessor;

wherein said local control system microprocessor;

periodically transmits logical portions of current persistent data to the remote server for saving in said remote data storage, said logical portions of current persistent data each including a distinguishing data element,

periodically saves said logical portions of current persistent data in said local control system non-volatile memory less frequently than said persistent data is periodically saved in said remote data storage,

saves said distinguishing data element in the local data storage for each logical portion of existing persistent data saved only at the remote server, and

when rebooting said local control system retrieves from said remote data storage only said logical portions of existing persistent data having distinguishing data elements subsequent to said distinguishing data element saved in the local data control system non-volatile memory.

8. The security system of claim 7, wherein said distinguishing data elements are time stamps.

9. The security system of claim 7, wherein said non-volatile memory comprises flash IC storage.

10. The security system of claim 9, wherein said remote data storage comprises at least one of RAM and EEPROM memory devices.

11. The security system of claim 7, wherein said remote data storage comprises at least one of RAM and EEPROM memory devices.