Delaval, Guillaume Laurent

The disclosure notably relates to a computer-implemented method for detecting and localizing sirens based on sound signals. Each sound signal represents a sound acquired at a same time frame by a respective microphone of a vehicle. The vehicle comprises at least two microphone modules. Each microphone module comprises several microphones. The method comprises, for each microphone module, by a local processing function, removing noise in the sound signals acquired by the microphones of the module and performing siren detection and localization based on the sound signals acquired by the microphones of the modules. The method further comprises applying a global processing function to the siren detection and localization results outputted by the local processing function for all microphone modules. The global processing function is configured for siren detection and localization based on the results outputted by the local processing function.

The invention relates to a method (Mth) for integrity verification of Linux filesystem images (Fsl) of a Linux embedded system, wherein said method (Mth) comprises: (a) a cryptographic signing phase (Ph_S) comprising : - generating a unique signature (S<n>) for each Linux filesystem image (FsI<n>) of a filesystem (Fs); - appending it to each corresponding Linux filesystem images (FsI<n>); - adding a padding (Pa<n>) to align the appended unique signatures (S<n>) to a predetermined size or structure; - producing signed Linux filesystem images (FsIS<n>) by combining each Linux filesystem image (FsI<n>) with their respective unique signature (S<n>), and padding (Pa<n>); -(b) a building phase (Ph_Bd) comprising : - building an initRAMFs image (I_RAMFs) that comprises a security configuration file (fs<n>.conf) for each signed Linux filesystem images (FsIS<n>), a security configuration file (fs<n>.conf) comprising a public key (PBK) or certificate (CT) and a fixed offset of location (Off<n>) for their respective signatures (S<n>); - building a boot Image (I_Boot) that comprises said initRAMFs image (I_RAMFs) and a Linux kernel (K); - loading a secondary bootloader (SBL), an application bootloader (ABL), said boot-image (I_Boot), said initRAMFs image (I_RAMFs), said Linux filesystem images (FsIS<n>) and said Linux filesystem images (FsIS<n>) into a second memory (Mem1) of a target device (Dev) that comprises a primary bootloader (PBL); (c) a boot up phase (Ph_Bt) comprising : - executing said primary bootloader (PBL) so as to cryptographically verify the secondary bootloader (SBL); - executing said secondary bootloader (SBL) so as to cryptographically verify the application bootloader (ABL); - executing said application bootloader (ABL) so as to load the boot image (I_Boot) into a random access memory (RAM) of said target device (Dev), said boot image (I_Boot) comprising the initRAMFs image (I_RAMFs) and the Linux kernel (K); - starting the Linux kernel (K) so as to execute the initRAMFs image (I_RAMFs), said executing comprising : verifying sequentially each of said signed Linux filesystem images (FsIS<n>) and if the signature verification is successful, mounting the Linux filesystem images (FsI<n>) into said random access memory (RAM).

The disclosure notably relates to a method implemented by vehicles each equipped with a respective traffic system and optionally a respective start-stop system. The vehicles are stopped due to a blockage. The method comprises, by each vehicle, detecting S10 the blockage. The method comprises, by a determined first vehicle, determining S31 that the blockage is removed, and sending S32, to each other vehicle, a message indicating that the blockage is removed. The determined first vehicle may also optionally communicate the type of blockage to other vehicles. The method comprises, for each given vehicle receiving the message, performing at least one of warning S41 a driver of the given vehicle that the blockage is removed and, when equipped with a start-stop system, starting S42 the start-stop system of the given vehicle. Such a method improves vehicle departure once the blockage has been removed.

The disclosure notably relates to a computer-implemented method for processing together two or more sound signals. Each signal represents a sound acquired at a same time frame by a respective microphone of a vehicle (i.e. all signals are acquired at a same time frame, each signal being acquired by a respective microphone of the vehicle). The vehicle comprises at least two microphones. The method comprises, for each microphone of the vehicle, applying a signal-cleaning function to the sound signal acquired by the microphone. The signal-cleaning function is a function configured to take as input a sound signal and to remove wind noise in the input sound signal. The method thereby outputs a clean sound signal for each respective sound signal acquired by each respective microphone.

The invention relates to a first method (Mth) for secure exchanging a first pre-shared key (PSK) between a first node (A) and a second node (B) for an IPSec communication, said first node (A) comprising a first secure zone (Z'_A) where a master key (MK) is stored and a first non-secure zone (Z'_A), and said second node (B) comprising a second secure zone (Z_B) where the master key (MK) is stored and a second non-secure zone (Z'_B), wherein said first method (Mth) comprises:- generating by said first node (A) a first nonce (N) at each boot session (Bt),- deriving by said first node (A) in the first unsecured zone (Z'_A) a first pre-shared key (PSK) based on said first nonce (N) and on said master key (MK)- encrypting by said first node (A) the first pre-shared key (PSK) with the master key (MK) to generate a first encrypted nonce (ENM),- transmitting by said first node (A) said first encrypted nonce (ENM) to the second node (B),- receiving by said second node (B) from said first node (A) said first encrypted nonce (ENM),- decrypting by said second node (B) said first encrypted nonce (ENM) with the master key (MK) to retrieve a second nonce (N'),- deriving by said second node (B) in the second unsecured zone (Z'_B) a second pre-shared key (PSK') based on said second nonce (N') and on the master key (MK) using said key derivation function (KDF),- encrypting by said second node (B) the second nonce (N') with said second pre-shared key (PSK') to generate a second encrypted nonce (ENS),- transmitting by said second node (B) said second encrypted nonce (ENS) to the first node (A),- receiving by said first node (A) said second encrypted nonce (ENS) from the second node (B),- decrypting by said first node (A) said second encrypted nonce (ENS) with the first pre-shared key (PSK) to retrieve a second nonce (N'),- comparing by said first node (A) the second nonce (N') with the first nonce (N),- upon the result of said comparison, sending by said first node (A) a result notification (R) to the second node (B),- receiving by said second node (B) from said first node (A) said result notification (R).

The disclosure relates to a method implemented by a TCU for managing load during V2X communications. The TCU comprises a data storage containing dynamic information representing a relation between unique identifiers and a respective filtering duration. The method comprises receiving messages from multiple remote emitters, identifying the unique identifier of the respective remote emitter, and forwarding received messages to one or more processes based on the identified unique identifier and on the dynamic information. For each message among at least one message received, the method comprises obtaining areas of interest, identifying a location of the respective remote emitter, identifying one or more respective areas of interest containing the identified location, and updating the dynamic information to enable an up-to-date of the forwarding frequency for the respective remote emitter, based on the identified one or more areas of interest. The method forms an improved solution for managing load during V2X communications.

The disclosure relates to a method implemented by an electronic control unit in a vehicle controller area network. The ECU has a CAN controller and a CAN transceiver that is connected to a CAN bus. The method comprises, by the CAN controller, transmitting outgoing messages and/or receiving from the CAN transceiver incoming messages that have been transmitted to the CAN transceiver through the CAN bus. Each message contains an indication of a respective level of priority among a predetermined set of levels of priority. The method comprises, by the CAN transceiver, inserting messages in at least one priority queue of a buffer, based on the indication of the respective level of priority contained in the messages and emptying the buffer at a dynamically controlled rate, following the at least one priority queue. This forms an improved solution for managing overloads of the CAN bus and/or the CAN controller.

The disclosure notably relates to a computer-implemented method for making an emergency communication in a vehicle. The method comprises, by an In-vehicle Infotainment (IVI) unit of the vehicle, determining whether a Telematic Contril Unit (TCU) of the vehicle made an emergency communication upon detection of an emergency of the vehicle. The TCU and the IVI unit are both configured for detection of the emergency. The method further comprises, if the IVI unit determines that the TCU did not make an emergency communication upon detection of the emergency, triggering, by the IVI, a backup emergency communication. This constitutes an improved solution for making an emergency communication in a vehicle.

A method (200) for determining an elevation of a road portion used by a vehicle, said method (200) comprising the following steps: - detecting (201) signals emitted by at least two respective ground-based transmitters, said ground-based transceivers being each positioned at distinct elevations, - comparing (206) the detected signals to determine the signal having the highest power, - determining (208) the elevation of the road portion based on the comparison

The invention relates to a telematics control unit (1) for a vehicle (3), said telematics control unit (1) comprising at least one antenna (10) connected to an electronic support (11), a first housing (12) and a second housing (13) that are configured to house said at least one antenna (10) and said electronic support (11), wherein it further comprises a plastic carrier (14) that is placed opposite to the electronic support (11), and wherein said at least one antenna (10) is printed on said plastic carrier (14).