Device for access to data aboard an aircraft

• US 8,392,534 B2
• Filed: 07/07/2011
• Issued: 03/05/2013
• Est. Priority Date: 07/09/2010
• Status: Active Grant

• Current Assignee: Thales SA
• Original Assignee: Thales SA
• Inventors: Gamet, Pierre, Causse, Jean-Arnaud, Yan, Sylvain
• Primary Examiner(s): Luu, Le H
• Application Number:
  US13/178,260
• Publication Number:
  US 20120072482A1
• Time in Patent Office: 607 Days
• Field of Search: 709/219, 709/217, 709/218, 709/220, 345/765, 701/3, 701/16, 701/213, 717/121, 712/36
• US Class Current: 709/219
• CPC Class Codes: H04L 12/1863 comprising mechanisms for improved reliability, e.g. status reports arrangements for detecting or preventing errors by carrying supervisory signal the return channel H04L1/16
• CPC Class Codes: H04L 67/1001 for accessing one among a plurality of replicated servers
• CPC Class Codes: H04L 67/1008 based on parameters of servers, e.g. available memory or workload monitoring of computer activity G06F11/30
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04L 67/289 Intermediate processing functionally located close to the data consumer application, e.g. in same machine, in same home or in same sub-network
• CPC Class Codes: H04L 67/564 Enhancement of application control based on intercepted application data
• CPC Class Codes: H04L 67/61 taking into account QoS or priority requirements
• CPC Class Codes: H04L 69/40 for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection management of faults, events, alarms or notifications in data switching networks H04L41/06

Abstract

A device for access to data by clients aboard an aircraft, each of the clients being associated with an avionics application. Each of the clients includes a facade allowing access by the avionics applications to the data stored on the server. The facade includes means for signing up of the avionics application associated with the client to a subscription to a modification of a data item, and means for filtering notifications of modifications on the data sent by the data server as a function of the subscriptions of the avionics application associated with the client, and for warning the avionics application associated with the client of a modification of a data item to which it has subscribed.

Claims

1. A device for access to data by a plurality of clients aboard an aircraft, each of the clients being associated with an avionics application, the data being stored on at least one data server installed aboard the aircraft, the data being write-accessible and able to be modified, wherein

the data server comprises means for notifying the plurality of clients of modifications on the data that it stores;

each client comprises a facade allowing access by the avionics application associated with the client to the data stored on the data server, the facade comprising;

means for signing up of the avionics application associated with the client to a subscription to a modification of a data item; and

means for filtering notifications of modifications on the data sent by the data server as a function of the subscriptions of the avionics application associated with the client, and for warning the avionics application associated with the client of a modification of a data item to which it has subscribed;

the facades are distributed between at least a first and a second group, the first group directly receiving the notifications of modifications on the data sent by the data server; and

the facades belonging to the first group further comprise means for sending the notifications of data modifications of modifications on the data to the facades belonging to the second group, the sending of the notifications of modifications on the data to the facades of the second group being performed after the notifications of modifications on the data have been filtered and transmitted to the avionics applications associated with the clients of the facades of the first group.

2. The device according to claim 1, wherein the applications sending requests to the data server to access the data, the facade comprises means for dispatching a request to the least loaded server.

3. The device according to claim 1, wherein

the clients are grouped together in families, and

a family to which a client belongs is indicated to the data server by the facade of the client in a request.

4. The device according to claim 3, wherein a server comprises several stacks of requests that are pending processing, each of the stacks being dedicated to a client family, the requests being read-requests in respect of data sent by the facades of the clients.

5. The device according to claim 1, wherein

the device comprises a plurality of servers, and

the facade comprises means for dispatching a request to a server included in the plurality of servers which is least loaded with requests.