Abstract: A processing unit executes at least one of a task of a radio tuner, a task of a television tuner, a task of a playback control unit for playback of stored image and sound, a task of an indication unit for indicating image according to image data, a task of a navigation unit for detecting a present position and indicating the detected position on a map, and a task of a route search unit for searching for a route and indicating the searched route on the map, in accordance with a predetermined priority. When execution of multiple tasks by the processing unit exceeds processing performance of the processing unit, a processing suspension unit suspends a task, which satisfies a predetermined condition, among the multiple tasks currently executed by the processing unit, irrespective of a priority of the task.

Abstract: A communication system for a vehicle includes: a plurality of controllers mounted on the vehicle; a data communication network for coupling the plurality of controllers with each other so that the controllers transmit data to and receive data from each other via the data communication network; a failure diagnosis device for diagnosing whether each controller is normal; a failure diagnosis activation device for activating the failure diagnosis device; and an avoiding condition setting device for setting an avoiding condition, which provides to avoid execution of the failure diagnosis when the failure diagnosis device is activated.

Abstract: A communication system for a vehicle includes: a plurality of controllers mounted on the vehicle; a data communication network for coupling the plurality of controllers with each other so that the controllers transmit data to and receive data from each other via the data communication network; a failure diagnosis device for diagnosing whether each controller is normal; a failure diagnosis activation device for activating the failure diagnosis device; and an avoiding condition setting device for setting an avoiding condition, which provides to avoid execution of the failure diagnosis when the failure diagnosis device is activated.

Abstract: A processing unit executes at least one of a task of a radio tuner, a task of a television tuner, a task of a playback control unit for playback of stored image and sound, a task of an indication unit for indicating image according to image data, a task of a navigation unit for detecting a present position and indicating the detected position on a map, and a task of a route search unit for searching for a route and indicating the searched route on the map, in accordance with a predetermined priority. When execution of multiple tasks by the processing unit exceeds processing performance of the processing unit, a processing suspension unit suspends a task, which satisfies a predetermined condition, among the multiple tasks currently executed by the processing unit, irrespective of a priority of the task.