At the start of a communication, a video and audio output other than the communication is automatically turned off. When a handset is off-hooked or the operation to start the communication is performed by an operation apparatus, a communication control circuit switches a change-over switch to an a contact...http://www.google.ca/patents/US5969749?utm_source=gb-gplus-sharePatent US5969749 - Apparatus and method for suspending a reproduction operation reproducing image information when the arrival of a call from a communication line is detected
