An IP image transmission apparatus for TCP and UDP transmission of encoded data includes a storage medium, a first memory, a first bus, a second bus, an encoder for encoding image and audio data into encoded data and outputting the encoded data to the first bus, an encoded data transfer unit for writing the encoded data output to the first bus into the first memory through the second bus, a storage data writing controller for writing the encoded data output to the first bus into the storage medium through the first bus, and a storage data reading controller for reading storage data written in the storage medium through the first bus and writing the storage data into the first memory through the second bus.