Abstract: A control system for access to a limited access area requires identification and preferably authentication of the accessing person; in order to achieve efficiency and effectiveness, the system need to be automatic. According to the present invention, the arrangement associated with the accessing person is split into at least two devices in communication between each other: a personal identity biometric authentication device (D1) and a wirelessly communicating device (D2); the authentication device (D1) is responsible for user authentication, while the communication device (D2) is responsible for transmitting requests of access authorization to an electronic access controller (D3).

Abstract: The system allows a reliable and automatic detection of moving vehicles and advantageously also identification of the moving vehicles. A WPAN node device (advantageously a ZigBee node device) is installed on a vehicle to be detected when the vehicle is moving. Three WPAN node devices (advantageously three ZigBee node devices) are installed on the ground. One of the three WPAN node devices has a wide radio coverage area and acts as an “exciter” of the vehicle WPAN node device. Another one of the three WPAN node devices has a wide radio coverage area and acts as the “parent” of the vehicle WPAN node device. A further one of the three WPAN node devices has a narrow radio coverage area and acts as a “detector” of the vehicle WPAN node device. The three radio coverage areas are sized and located so that a moving vehicle to be detected enters the area of the “exciter” before entering the area of the “parent” and before entering the area of the “detector”.

Abstract: A method for secure communication between a local area network and a wide area network includes integrating a NAT functionality in a firewall associated with the local area network, wherein the NAT functionality is suitable to translate the source port of outgoing data packets with a NAT port value obtained by adding to a NAT offset value the value of the session ED used in a session database. When reply data packets coming from the wide area network are received by the firewall, the session ID is extracted from the NAT port value and is used for directly pointing to the session database, thus reducing the time required to recognize the session.

Abstract: A control system for access to a limited access area requires identification and preferably authentication of the accessing person; in order to achieve efficiency and effectiveness, the system need to be automatic. According to the present invention, the arrangement associated with the accessing person is split into at least two devices in communication between each other: a personal identity biometric authentication device (D1) and a wirelessly communicating device (D2); the authentication device (D1) is responsible for user authentication, while the communication device (D2) is responsible for transmitting requests of access authorization to an electronic access controller (D3).

Abstract: The system allows a reliable and automatic detection of moving vehicles and advantageously also identification of the moving vehicles. A WPAN node device (advantageously a ZigBee node device) is installed on a vehicle to be detected when the vehicle is moving. Three WPAN node devices (advantageously three ZigBee node devices) are installed on the ground. One of the three WPAN node devices has a wide radio coverage area and acts as an “exciter” of the vehicle WPAN node device. Another one of the three WPAN node devices has a wide radio coverage area and acts as the “parent” of the vehicle WPAN node device. A further one of the three WPAN node devices has a narrow radio coverage area and acts as a “detector” of the vehicle WPAN node device. The three radio coverage areas are sized and located so that a moving vehicle to be detected enters the area of the “exciter” before entering the area of the “parent” and before entering the area of the “detector”.

Abstract: A method for secure communication between a local area network and a wide area network includes integrating a NAT functionality in a firewall associated with the local area network, wherein the NAT functionality is suitable to translate the source port of outgoing data packets with a NAT port value obtained by adding to a NAT offset value the value of the session ED used in a session database. When reply data packets coming from the wide area network are received by the firewall, the session ID is extracted from the NAT port value and is used for directly pointing to the session database, thus reducing the time required to recognize the session.

Abstract: A method of exchanging data within a direct memory access (DMA) arrangement including a plurality of IP blocks (A, B, C) includes the step of associating with the IP blocks (A, B, C) respective DMA modules (IDMA A. IDMA B, IDMA C) each DMA module including an input buffer (11A, 11B, 11C) and an output buffer modules (IDMA A, IDMA B, IDMA C) are coupled over a data transfer facility (BUS) in a chain arrangement wherein each DMA module has at least one of its output buffer (12A, 12B) coupled to the input buffer (11B, 11C) of another DMA module downstream in the chain and its input buffer (11B, 11C) coupled to the output buffer (12A, 12B) of another DMA module upstream in the chain. The DMA modules interact with the respective IP blocks (A, B, C) by writing data from the input buffer (11A, 11B, 11C) of the IDMA module into the respective IP block (A, B, C) and raiding data from the respective IP block (A, B, C) into the output buffer (12A, 12B, 12C) of the DMA module.

Abstract: An architecture for a state machine (10) with a number of states of the machine, comprises a memory (14) having a set of addresses. The memory (14) is arranged to store at each of said addresses in the set the complete description of a respective one of said number of states of the machine (10).

Abstract: The present invention is related to a method of transferring data in an electronic circuit (10) incorporating a control unit or CPU (21), first circuit blocks (41) and second circuit blocks (61) interconnected by means of a BUS (24). The method and the relating circuit envisage the use of interface devices (45a) and/or (45b), associated to respective circuit blocks, and capable of managing the direct transfer of data from the first block (41) to the second block (61), or vice-versa, without the control by the CPU (21) during such a transfer. For the purpose of this method, and relating circuit (101), interface device (45a) must be, able to intercept control commands issued by CPU (21) and to directly manage the data transfer from the first block (41) to the second block (61) .Thus, the method and the circuit (101), and the interface device (45a) make it possible to considerably reduce the load of CPU 21, BUS 24 and electronic circuit (101) as well.