Television receiving set having text displaying feature

DETAILED DESCRIPTION As described above, currently, some television receiving sets are provided with the feature of splitting the screen into two or more than two sections to display different programs transmitted through different channels while some are provided with the feature of producing upper and lower blank zones to display images for a wide screen.
When a supplementary program is displayed on a proper program on a superimposition basis, characters and graphics of the supplementary program can be hardly discernible from the proper program depending on the background image or the positions of the superimposed elements to make it difficult to discriminate the supplementary program from the proper program.
In view of the above problems, it is therefore the object of the present invention to provide a television receiving set having a text displaying feature that is designed to display characters and graphics of supplementary programs in a specific way to display clearly discernible characters and graphics from signals transmitted through a data channel.
According to the invention, characters and graphics obtained by decoding teletext signals and data transmission signals by means of a teletext/data transmission decoder are displayed in the blank zones of the display screen of a television receiving set according to the invention.
In the case of television signals in the letter box format, either the upper or lower blank zone is moved to the bottom or the top of the screen, whichever appropriate, to produce a single and wide bottom or top blank zone so that characters and graphics may become clearly visible.
Additionally, when the screen is split into two sections in order to display two different images, one of the sections of the screen can be used to display characters and graphics so that may of them may be displayed collectively.
Finally, characters and graphics on the television screen can be enlarged to make them clearly visible.
Additional objects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention