1. A transmitting apparatus configured to transmit a content, the apparatus comprising: encoding means for creating an encoded content signal by encoding the content; generating means for generating sign language word identification information corresponding to chronologically-ordered sign language words appearing in a speech in the content; creating means for creating control information containing the generated chronologically-ordered sign language word identification information; storing means for storing sign language word images for displaying a sign language video corresponding to the sign language words by grouping the sign language word images into a plurality of modules according to a frequency of appearance of the sign language words in the speech in the content; multiplexing means for creating a data stream by combining the encoded content signal with the control information and by repeatedly replicating the plurality of modules at a frequency corresponding to the frequency of appearance; and transmitting means for transmitting the created data stream.