Patent ID: 8457444

Claim:
A communication apparatus comprising: a display area detecting unit that detects a display area of an image to be displayed on the basis of a received moving image data, wherein the display area is a dimension or a size of the image that is to be actually displayed, wherein the display area detecting unit detects a change of a display area of the image; and a control information transmitting unit that transmits, to a transmission source of the moving image data, control information regarding transmission of the image data, in accordance with the display area, wherein the control information transmitting unit transmits at least one of control information to stop transmitting or to restart transmitting the moving image data, control information to increase or decrease a frame rate of the moving image data, control information to change resolution of the moving image data and control information to increase or decrease a compression rate of the moving image data, and wherein the control information is generated in accordance with the change detected by the display area detecting unit.