Abstract: The detection device that detects presence of an unauthorized message in an in-vehicle network, the detection device includes: a state detection unit configured to detect a transition to a state in which a periodic message is transmitted in an in-vehicle network, based on content of a message transmitted in the in-vehicle network; and a processing unit configured to perform detection processing to detect presence of the unauthorized message based on a reception status of a plurality of the periodic messages in the state detected by the state detection unit.

Abstract: An in-vehicle communication device includes: an abnormality detection unit detecting abnormalities in in messages received by a reception unit receiving messages from one or more other devices; an estimation unit estimating normal information corresponding to information in which abnormalities have been detected; and a replacement unit replacing information included in messages received by the reception unit with information estimated by the estimation unit.

Abstract: A processing apparatus is a processing apparatus for a vehicle provided with a control processing unit that executes control processing for controlling an operation of an electronic device by executing a first program, and includes: an update determination unit that determines whether or not to update the first program; and a stop determination unit that determines whether or not running of the vehicle is stopped if the update determination unit makes a determination to update the first program, and, if the stop determination unit determines that running of the vehicle is stopped, the control processing unit executes the control processing by executing a second program, and a data amount of the second program is smaller than a data amount of the first program.

Abstract: An unauthorized message in an in-vehicle network is more accurately detected. A detection device includes: a monitoring unit configured to monitor, as target messages, an authorized message being periodically transmitted and the unauthorized message in the in-vehicle network, and monitor a reference message being periodically transmitted; a calculation unit configured to, based on a monitoring result of the monitoring unit, calculate a time difference between a time corresponding to a transmission time of the target message and a time corresponding to a transmission time of the reference message; and a detection unit configured to, based on the time difference calculated by the calculation unit, perform a detection process of detecting the unauthorized message.

Abstract: A detection device includes: a monitoring unit configured to monitor, as target messages, an authorized message being periodically transmitted and the unauthorized message in the in-vehicle network; and a generation unit configured to generate a reference time to be used in a detection process of detecting the unauthorized message; a detection unit configured to perform detection process, based on time difference between a time corresponding to a transmission time of target message based on a monitoring result of the monitoring unit, and the reference time generated by the generation unit. When target message has been determined to be abnormal in the detection process, the generation unit, based on a value obtained by adding a latest statistical value to the reference time, generates a new reference time to be used in the detection process for a target message to be transmitted after the target message having been determined to be abnormal.

Abstract: In a relay device, a transmitting/receiving unit of an ECU relay receives data. A first counter value is incremented if an amount of data received by the transmitting/receiving unit per unit time exceeds a first threshold. A second counter value is incremented if the amount of data received by the transmitting/receiving unit per unit time exceeds a second threshold. The second threshold is greater than the first threshold. A control unit of a bus relay repeatedly monitors the first counter value. If the first counter value is incremented, the control unit shortens a cycle with which the second counter value is monitored.

Abstract: A substitution apparatus for installation in a vehicle in which a plurality of in-vehicle control apparatuses are implemented, the substitution apparatus including a control unit and a substitute unit. The control unit is configured to control the substitute unit based on transmission data transmitted from the in-vehicle control apparatuses, specify an abnormal in-vehicle control apparatus based on the transmission data, disable the specified abnormal in-vehicle control apparatus, and apply, to the substitute unit, a program for exhibiting functions otherwise normally executed by the specified abnormal in-vehicle control apparatus. The substitute unit is configured to substitute for the disabled in-vehicle control apparatus by executing the applied program.

Abstract: A control unit of a determination device obtains a plurality of pieces of first data and second data, derives determination data based on the first data, specifies, from among a plurality of combinations of identifiers for respectively identifying the pieces of first data and an identifier for identifying the second data, based on the second data and the determination data, a valid combination including the identifiers of valid first data and second data, and an invalid combination including the identifiers of invalid first data or second data, and determines, based on a plurality of identifiers included in the specified invalid combination and a plurality of identifiers included in the valid combination, whether the first data or the second data is invalid.

Abstract: A detection device configured to detect an unauthorized message in an in-vehicle network installed in a vehicle includes: a monitoring unit configured to monitor messages transmitted in the in-vehicle network; a calculation unit configured to, on the basis of a monitoring result by the monitoring unit, calculate a statistic value regarding target messages that have been transmitted in the in-vehicle network in a predetermined period and that are each a message having identification information provided for each kind of target information to be used in the vehicle; and a detection unit configured to perform a detection process of detecting the unauthorized message on the basis of the statistic value calculated by the calculation unit.

Abstract: A detection device includes: an acquisition unit configured to acquire a target distribution that is a distribution of reception intervals of periodic messages transmitted in an in-vehicle network; an extraction unit configured to extract a part of the target distribution acquired by the acquisition unit, in accordance with a predetermined criterion; and a detection unit configured to perform a detection process of detecting an unauthorized message, based on the part, of the target distribution, extracted by the extraction unit.

Abstract: An in-vehicle communication device includes: an abnormality detection unit detecting abnormalities in in messages received by a reception unit receiving messages from one or more other devices; an estimation unit estimating normal information corresponding to information in which abnormalities have been detected; and a replacement unit replacing information included in messages received by the reception unit with information estimated by the estimation unit.

Abstract: A detection device includes: a monitoring unit configured to monitor, as target messages, an authorized message being periodically transmitted and the unauthorized message in the in-vehicle network; and a generation unit configured to generate a reference time to be used in a detection process of detecting the unauthorized message; a detection unit configured to perform detection process, based on time difference between a time corresponding to a transmission time of target message based on a monitoring result of the monitoring unit, and the reference time generated by the generation unit. When target message has been determined to be abnormal in the detection process, the generation unit, based on a value obtained by adding a latest statistical value to the reference time, generates a new reference time to be used in the detection process for a target message to be transmitted after the target message having been determined to be abnormal.

Abstract: An unauthorized message in an in-vehicle network is more accurately detected. A detection device includes: a monitoring unit configured to monitor, as target messages, an authorized message being periodically transmitted and the unauthorized message in the in-vehicle network, and monitor a reference message being periodically transmitted; a calculation unit configured to, based on a monitoring result of the monitoring unit, calculate a time difference between a time corresponding to a transmission time of the target message and a time corresponding to a transmission time of the reference message; and a detection unit configured to, based on the time difference calculated by the calculation unit, perform a detection process of detecting the unauthorized message.

Abstract: A substitution apparatus for installation in a vehicle in which a plurality of in-vehicle control apparatuses are implemented, the substitution apparatus including a control unit and a substitute unit. The control unit is configured to control the substitute unit based on transmission data transmitted from the in-vehicle control apparatuses, specify an abnormal in-vehicle control apparatus based on the transmission data, disable the specified abnormal in-vehicle control apparatus, and apply, to the substitute unit, a program for exhibiting functions otherwise normally executed by the specified abnormal in-vehicle control apparatus. The substitute unit is configured to substitute for the disabled in-vehicle control apparatus by executing the applied program.

Abstract: A communication system includes: a receiving device configured to receive data, and repeatedly set a time range; and a transmitting device configured to repeatedly transmit data to the receiving device at a first time interval, and change a transmission interval at which data is transmitted to the receiving device to a second time interval, which is different from the first time interval, if the number of pieces of data received by the receiving device within the time range is 2 or more.

Abstract: A program update system includes a plurality of general-purpose ECUs, each capable of executing a plurality of types of programs, and exhibit different functions in accordance with a type of program that is executed. The general-purpose ECUs include an ECU in operation in a state of outputting information for controlling an on-vehicle apparatus mounted in a vehicle and an ECU on standby in a state of not outputting information for controlling the on-vehicle apparatus. When updating a program, the ECU on standby obtains an update program transmitted from an external server, stores the update program in a storage unit thereof, and changes to an ECU in operation that outputs information for controlling the on-vehicle apparatus, while the ECU in operation that is executing a previous-version program corresponding to the update program stops outputting information for controlling the on-vehicle apparatus, and changes to an ECU on standby.

Abstract: Provided is a program updating device, program updating system, and a program updating method for updating a program without imposing a load on a user. A program updating device (“PUD”) includes a communication unit transmitting/receiving information to/from an in-vehicle device operating on a software program, the PUD transmitting update information of a software program from the communication unit to execute update processing, further including: a determination unit configured to determine whether an operation switch of a vehicle has been switched from an on-state to an off-state; a state control unit configured to, if it is determined that the operation switch has been switched to the off-state, instruct to transition to a driving-prohibition state and hold an ignition-on state; and an update processing unit configured to start update processing based on the update information after confirming of a state is made.

Abstract: A determination device acquires first data and a plurality of second data that are related to a state of a vehicle and comprises a plurality of trained neural networks that are so trained as to estimate assumption data corresponding to the first data if any one of the plurality of second data is input; and a determination unit that determines correctness of the first data based on the estimation data respectively estimated by the plurality of trained neural networks and the first data.

Abstract: Provided is a program updating device, program updating system, and a program updating method for updating a program without imposing a load on a user. A program updating device (“PUD”) includes a communication unit transmitting/receiving information to/from an in-vehicle device operating on a software program, the PUD transmitting update information of a software program from the communication unit to execute update processing, further including: a determination unit configured to determine whether an operation switch of a vehicle has been switched from an on-state to an off-state; a state control unit configured to, if it is determined that the operation switch has been switched to the off-state, instruct to transition to a driving-prohibition state and hold an ignition-on state; and an update processing unit configured to start update processing based on the update information after confirming of a state is made.

Abstract: A communication system includes: a receiving device configured to receive data, and repeatedly set a time range; and a transmitting device configured to repeatedly transmit data to the receiving device at a first time interval, and change a transmission interval at which data is transmitted to the receiving device to a second time interval, which is different from the first time interval, if the number of pieces of data received by the receiving device within the time range is 2 or more.