Provided is a controller capable of preventing unnecessary contents from being displayed in a period from when a failure occurs on a terminal apparatus to when the failure is restored. When a failure monitoring section detects that a failure has occurred on a display control section, failure detection information is outputted to a display update control section. The display update control section, in response to the outputted failure detection information, suspends updating a display, which is performed by a display section. And when a restoration monitoring section detects that the display control section has been restored from the failure, restoration detection information is outputted to the display update control section. The display update control section controls the display section so as to suspend updating the display in response to the failure detection information and starts updating the display in response to the restoration detection information.