A mode determining unit of a reproducing device determines a compatible mode indicating compatibility with an image data format by referring to the format of 3D image data to be used for generating a multi-view image. A 3D information generating unit generates compatibility information indicating the determined compatible mode as 3D information. A communication unit transmits the 3D image data and the 3D information to a display device. A communication unit of the display device receives the transmitted 3D image data, and receives the compatibility information as the 3D information. A mode determining unit determines the compatible mode of the 3D image data from the 3D information. Based on the determined compatible mode, a synchronization control unit controls synchronization of processing of the 3D image data. The technique can be applied to image processing devices, for example, to transmit image data to generate multi-view images.