Patent ID: 8782484

Claim:
A transmission device comprising: a first conversion means that converts first transmission target data which is a target of transmission into first transmission data formed by N number of symbol values each of which indicates any one of a plurality of values set in advance, with predetermined units of data, based on a first conversion table stored in advance; a second conversion means that converts first error correction data, which is used to correct errors occurring in the first transmission target data, into first symbol data formed by X number of symbol values, based on a second conversion table stored in advance; a third conversion means that converts second transmission target data different from the first transmission target data into second symbol data formed by (N-X) number of symbol values, based on a third conversion table stored in advance; an addition and generation means that adds the second symbol data to the first symbol data and generates second transmission data formed by the N number of symbol values; and a transmission means that transmits a transmission signal formed by the first and second transmission data, in which each of N and X represent a positive integer natural number.