Birch, Stewart, Kolasch & Birch, LLP
Caption display method of digital television
The present invention relates to a caption display method of a digital television which is capable of displaying a caption having a certain size and a font on an appropriate position of a picture having 16:9 picture ratio when a picture having 4:3 picture ratio or a picture having 16:9 picture ratio enlarged from the picture having 4:3 picture ratio is displayed on a screen of a digital television having 16:9 picture ratio. The caption display method of the digital television in accordance with the present invention for displaying a picture with a caption by receiving picture transmission stream transmitted from a broadcast station on a screen of a DTV having a certain picture ratio comprises a judging process for judging whether a caption descriptor is included in program guide information transmitted with the picture transmission stream, an adjusting process for adjusting automatically font and/or position of a caption to be displayed with a picture of the received picture transmission stream in order to be displayed corresponding to the picture ratio of the screen in accordance with the information included in a caption descriptor when there is the caption descriptor, and a displaying process for displaying a caption having the adjusted font on the adjusted position with the picture.
LG Electronics Inc.
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Jung Oh
Chung