Provided is a transmitter for continuously and sequentially transmitting data with a variable unit for playback. The transmitter includes an obtaining section, a buffer, a computing section and a transmitting section. The obtaining section sequentially obtains segment data of the data to be transmitted. The buffer stores an error correction code to correct an error caused in the data by transmission. The computing section computes, every time newly obtained segment data reaches a predetermined size, XOR of the error correction code already stored in the buffer and the newly obtained segment data, and then updates the error correction code with the computed XOR. The transmitting section sequentially transmits the obtained segment data, as well as reads from the buffer and transmits the updated error correction code every time the computing section computes XOR for data in a size corresponding to the unit for playback.