Abstract: The relay device transmits data for writing or updating a program received from the external communication bus to an in-vehicle communication bus, which is the transfer destination, in order of reception of the data. A storage area for temporary storage can be smaller and costs can be reduced, as compared with a case where the data is stored until all data is prepared for each of in-vehicle devices. Further, the required time can be reduced as compared with a case where all data is received for each of the in-vehicle devices and then transmitted to the in-vehicle devices. The external device transmits data addressed to the in-vehicle devices to the relay device in parallel.

Abstract: The relay device transmits data for writing or updating a program received from the external communication bus to an in-vehicle communication bus, which is the transfer destination, in order of reception of the data. A storage area for temporary storage can be smaller and costs can be reduced, as compared with a case where the data is stored until all data is prepared for each of in-vehicle devices. Further, the required time can be reduced as compared with a case where all data is received for each of the in-vehicle devices and then transmitted to the in-vehicle devices. The external device transmits data addressed to the in-vehicle devices to the relay device in parallel.

Abstract: A parking assist system includes: an actuator that drives a back door of a vehicle; an opening degree control unit that controls an opening degree of the back door by controlling the actuator; a storage device that stores an allowable opening degree of the back door at a park position of the vehicle in association with the park position; and a position information acquisition unit that acquires position information of the vehicle. When a position of the vehicle corresponds to the park position stored in the storage device, the opening degree control unit limits the opening degree of the back door on the basis of the allowable opening degree of the back door, stored in the storage device in association with the park position.

Abstract: A parking assist system includes: an actuator that drives a back door of a vehicle; an opening degree control unit that controls an opening degree of the back door by controlling the actuator; a storage device that stores an allowable opening degree of the back door at a park position of the vehicle in association with the park position; and a position information acquisition unit that acquires position information of the vehicle. When a position of the vehicle corresponds to the park position stored in the storage device, the opening degree control unit limits the opening degree of the back door on the basis of the allowable opening degree of the back door, stored in the storage device in association with the park position.

Abstract: A pressure sensor portion having a pressure-responsive element for detecting gas pressure in reference to the atmospheric pressure is connected to a mounting body such as a canister mounted on a vehicle by means of a fragile connecting member. The connecting member breaks off to dismount the sensor device from the mounting body when a high impact due to an accidental collision or crash is imposed on the sensor device, and thereby an inlet port connected to the sensor portion for introducing gas pressure thereinto is prevented from being broken or damaged by such a collision impact. The fragile connecting member may include a tubular pipe formed integrally with a cover that hermetically closes an inner cavity of the sensor portion. A mounting bracket connected to the sensor portion via the fragile connecting member may be used to mount the sensor device on the mounting body.