An electronic apparatus comprising: a plurality of image sensors (330, 340) comprising N image sensors, where N is an integer equal to or greater than 2; a temporary memory electrically connected to the second to Nth image sensors and a processor electrically connected to the first image sensor, such that an image signal generated by the first image sensor is directly transmitted to the processor without passing through the temporary memory, and electrically connected to the temporary memory, thereby also being electrically connected to the second to Nth image sensors the processor being configured to output read control signals and synchronization signals to the plurality of image sensors (330, 340), wherein the processor is further configured to: output a first read control signal to the first image sensor and receive first data read from the first image sensor, the first data comprising data generated in a horizontal axis line of pixels comprised in the first image sensor; output further read control signals to the second to Nth image sensors and cause data read from the second to Nth image sensors to be stored in the temporary memory, the data from each of said second to Nth sensors comprising data generated in a horizontal axis line of pixels comprised in the respective image sensor, wherein the temporary memory comprises N-1 line memories; and when the receiving of the first data is ended, sequentially output the data from the second to Nth sensors stored in the temporary memory, based on output control signals generated between the first read control signal and a next first read control signal, and generate merged data in which the first data and the data from the second to Nth sensors are merged into one horizontal axis line. a plurality of image sensors (330, 340) comprising N image sensors, where N is an integer equal to or greater than 2; a temporary memory electrically connected to the second to Nth image sensors and a processor electrically connected to the first image sensor, such that an image signal generated by the first image sensor is directly transmitted to the processor without passing through the temporary memory, and electrically connected to the temporary memory, thereby also being electrically connected to the second to Nth image sensors the processor being configured to output read control signals and synchronization signals to the plurality of image sensors (330, 340), wherein the processor is further configured to: output a first read control signal to the first image sensor and receive first data read from the first image sensor, the first data comprising data generated in a horizontal axis line of pixels comprised in the first image sensor; output further read control signals to the second to Nth image sensors and cause data read from the second to Nth image sensors to be stored in the temporary memory, the data from each of said second to Nth sensors comprising data generated in a horizontal axis line of pixels comprised in the respective image sensor, wherein the temporary memory comprises N-1 line memories; and when the receiving of the first data is ended, sequentially output the data from the second to Nth sensors stored in the temporary memory, based on output control signals generated between the first read control signal and a next first read control signal, and generate merged data in which the first data and the data from the second to Nth sensors are merged into one horizontal axis line. output a first read control signal to the first image sensor and receive first data read from the first image sensor, the first data comprising data generated in a horizontal axis line of pixels comprised in the first image sensor; output further read control signals to the second to Nth image sensors and cause data read from the second to Nth image sensors to be stored in the temporary memory, the data from each of said second to Nth sensors comprising data generated in a horizontal axis line of pixels comprised in the respective image sensor, wherein the temporary memory comprises N-1 line memories; and when the receiving of the first data is ended, sequentially output the data from the second to Nth sensors stored in the temporary memory, based on output control signals generated between the first read control signal and a next first read control signal, and generate merged data in which the first data and the data from the second to Nth sensors are merged into one horizontal axis line.