Patent ID: 8923767

Claim:
A vehicular communication system comprising: a vehicular communication apparatus mounted on a vehicle; and a portable terminal apparatus communicably connected to the vehicular communication apparatus, wherein the vehicular communication apparatus includes: a vehicular storage device that stores a predetermined vehicular application for executing a predetermined function; and a vehicular input device that enters an operation for the predetermined function, and wherein the portable terminal apparatus includes: a mobile storage device that stores a predetermined mobile application for executing the predetermined function; a mobile input device that enters an operation for the predetermined function; an interoperation detection device that detects establishment of an interoperation state, in which the predetermined vehicular application and the predetermined mobile application interoperate with each other so that the predetermined function is executed; and an operation input disable device that prevents the mobile input device from entering the operation for the predetermined function when the interoperation detection device detects the establishment of the interoperation state; wherein the portable terminal apparatus further includes: an operation input enable device that releases an operation input disable state activated by the operation input disable device when the mobile input device enters a predetermined operation, and wherein, in the operation input disable state, the operation input disable device prevents the mobile input device from entering the operation for the predetermined function.