Abstract: A data security system for securing the critical data of an on-board airplane avionics system comprising access control means for controlling access to the said data on the basis of the security related information of a user, wherein the security related information is selected from the group consisting of: a list of authorised users; a maximum number of allowed accesses, as well as the types of allowed accesses; a time window allowed for access; a series/concatenation allowed for access, by various different users; and a hierarchical prioritisation of the zones associated with the data storage means.

Abstract: This multi-core processor system for processing information, of the kind including a data exchange engine (2) associated with multiple users (3) of shared resources (4), is characterized in that it includes means for controlling data exchanges in the processor, associated with each user (3), with the exchange engine (2) and with the shared resources (4) and defining at the processor, a data exchange law determined according to a defined space-time mapping, a giving the possibility of obtaining predictable operating performances of this processor.

Abstract: This multi-user processor system for processing information, of the type including a data exchange engine (3) associated with multiple users (1) of shared resources (2), is characterized in that it includes means (4) for controlling data exchange in the processor, associated with each user, the exchange engine and the shared resources, in order to authorize transactions or not and in that the engine includes means (5) for breaking down authorized transactions into elementary sub-transactions, means (6) for interlacing the sub-transactions obtained from the breaking down of the authorized transactions of several users and the means (6) for distributing these interlaced sub-transactions among the different resources.

Abstract: A data security system for securing the critical data of an on-board airplane avionics system comprising access control means for controlling access to the said data on the basis of the security related information of a user, wherein the security related information is selected from the group consisting of: a list of authorised users; a maximum number of allowed accesses, as well as the types of allowed accesses; a time window allowed for access; a series/concatenation allowed for access, by various different users; and a hierarchical prioritisation of the zones associated with the data storage means.

Abstract: This multi-user processor system for processing information, of the type including a data exchange engine (3) associated with multiple users (1) of shared resources (2), is characterized in that it includes means (4) for controlling data exchange in the processor, associated with each user, the exchange engine and the shared resources, in order to authorize transactions or not and in that the engine includes means (5) for breaking down authorized transactions into elementary sub-transactions, means (6) for interlacing the sub-transactions obtained from the breaking down of the authorized transactions of several users and the means (6) for distributing these interlaced sub-transactions among the different resources.

Abstract: This multi-core processor system for processing information, of the kind including a data exchange engine (2) associated with multiple users (3) of shared resources (4), is characterized in that it includes means for controlling data exchanges in the processor, associated with each user (3), with the exchange engine (2) and with the shared resources (4) and defining at the processor, a data exchange law determined according to a defined space-time mapping, a giving the possibility of obtaining predictable operating performances of this processor.