Processing method of subtitle data stream of video programme and video displaying system

Abstract

The invention provides a processing method of a subtitle data stream of a video programme, and a video displaying system, wherein the video displaying system comprises a multi-channel demodulator and a processing module, the demodulator is used for demodulating the television data streams of the video programme in multiple channels into subtitle data streams and video streams, and the subtitle data carried by the subtitle data stream is saved in a picture format; and the processing module is used for carrying out optical character recognition on the subtitle data carried by the subtitle data stream so as to generate a subtitle text stream, the subtitle text stream is processed to generate a processed subtitle image, and the processed subtitle image is marked on the image of the video programme. The invention can achieve a good recognition result, meets watching needs of a user, and improves the final display quality of the subtitle.

Description

technical field [0001] The present invention relates to subtitle processing in a digital television or a digital television receiver, and more particularly, relates to a method for processing subtitle data streams of video programs and a related video display system. Background technique [0002] When a user watches a TV program in a non-native language, the user will rely on the subtitles of the TV program to understand the dialogue in the TV program. Sometimes subtitles are not displayed clearly. Although television programs can be broadcast digitally, when subtitles are stored in image format, the display quality of the subtitles may still be substandard for a number of reasons. [0003] For example, the text size used to store subtitles in an image format is too small, resulting in lower quality for the final display of the subtitles. In another embodiment, the resolution of the subtitles stored in the image format does not match the display resolution of the televisio...

AI Technical Summary

Problems solved by technology

[0003] For example, the text size used to store subtitles in an image format is too small, resulting in a lower quality final display of the subtitles

In another embodiment, the resolution of the subtitles stored in the image format does not match the display resolution of the TV program, resulting in unacceptable final display quality of the subtitles

If the video display system used to display television programs includes a television receiver and a display device, such as a projector, a plasma display panel (PDP) or a liquid crystal display (Liquid Crystal Display, LCD) panel, there may be a television receiver Does not match the resolution of the display device, resulting in severely distorted subtitles

[0004] As mentioned above, as long as the subtitles are stored in an image format, no matter whether the subtitle data of the subtitles is transmitted separately, the final display quality of the subtitles cannot be guaranteed

In addition, when the subtitles are generally encoded in individual partial images within multiple images of a television program, displaying the subtitles will become worse, resulting in a poor viewing experience for the user

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