4. The transmitting apparatus according to claim 2 , further comprising: operation input means operated by an operator viewing the content and recognizing the sign language words in the speech in the content; wherein the generating means generates the sign language word identification information corresponding to the chronologically-ordered sign language words appearing in the speech in the content, on the basis of an input by the operator to the operation input means.
4. The transmitting apparatus according to claim 2 , further comprising: operation input means operated by an operator viewing the content and recognizing the sign language words in the speech in the content; wherein the generating means generates the sign language word identification information corresponding to the chronologically-ordered sign language words appearing in the speech in the content, on the basis of an input by the operator to the operation input means. 16. The transmitting apparatus according to claim 4 , wherein the sign language word images are in a multiple-image network graphics, portable network graphics, or joint photographic experts group format.