u201c color of caption u201d if a user selects u201c caption off u201d the controller 504 does not display the received caption if a user selects u201c english caption display u201d the controller 504 controls the caption decoders 506 and 507 so that only the caption written in english may be displayed on a screen further the controller 504 controls the caption decoders 506 and 507 so that the received caption data may be processed according to a set size and a set color of a caption the controller 504 receives the caption information and judges characteristics of the received caption data on the basis of parameter values included in the caption information s 12 the controller 504 judges a number of caption services on the basis of the caption information for example the controller 504 judges whether a synchronous caption an asynchronous caption service a letter information service are provided the controller 504 judges a language of the received caption on the basis of the caption information for example the controller 504 judges whether the received caption is english japanese or korean the controller 504 judges a type of the received caption data on the basis of the caption information for example the controller 504 judges whether the received caption data is digital caption data or analog caption data s 13 the controller 504 determines a standard of the received caption data on the basis of the caption information for example if the received caption data is analog caption data the.