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Device and method for detecting real-time captions rolling

A technology for subtitles and data, applied in the field of real-time detection of subtitle scrolling devices, can solve problems that do not meet the use requirements of high-quality products, jagged subtitle data, etc.

Active Publication Date: 2008-02-06
VIA TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the subtitle data shows subtitle scrolling and subtitle enlargement / reduction effects at the same time, the audio-visual playback device decodes the subtitle data stream. Since the subtitle data can be encoded in a variable length encoding (VLE) manner, after decoding, it will generate For subtitle data with multiple lines of block data, when the audio-visual playback device displays the subtitle zoom in / out effect, it will delete the block data at a fixed position, and enlarge the ratio of width and height of the undeleted block data, if it cooperates with subtitle scrolling As a result, the deleted block data will appear on the display screen due to the scrolling of the subtitles, and the subtitle data displayed on the display screen will become a situation where the subtitles are suddenly large and small, causing the problem of jagged subtitle data, which is not in line with modern usage. Consumers' demand for high-quality products

Method used

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  • Device and method for detecting real-time captions rolling
  • Device and method for detecting real-time captions rolling
  • Device and method for detecting real-time captions rolling

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Embodiment Construction

[0032] Please refer to FIG. 1, which is an embodiment of the device for detecting subtitle scrolling in real time according to the present invention. In this embodiment, a subtitle decoding unit 4 is used to decode a subtitle data stream to obtain a first subtitle compression Data and a second subtitle compression data, to produce a first subtitle data corresponding to the first subtitle compression data and a second subtitle data corresponding to the second subtitle compression data; a receiving unit 8 receives the subtitle decoding unit 4 The decoded first subtitle compressed data and the second subtitle compressed data; and a detection module 10, which detects the first subtitle compressed data and the second subtitle compressed data received by the receiving unit 8 to obtain an offset, A subtitle rolling information of the second subtitle data is determined.

[0033] Please refer to FIG. 1 again, in this embodiment, a storage unit 2 is further included to provide the subti...

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Abstract

The invention discloses a subtitle decoding unit and SPU stream by which the compressed material of first subtitle and second subtitle can be obtained, and the related first and second subtitle material are generated. Then the obtained subtitle compressed material is transmitted to a reception unit in order to provide it for a detective module detecting first and second subtitle compressed material. Then an offset is obtained, which judges the subtitle rolling information relating to second and first subtitle material.

Description

technical field [0001] The present invention relates to a device and method for real-time detection of subtitle scrolling, in particular to the function of detecting first subtitle compressed data and second subtitle compressed data to obtain subtitle rolling information. Background technique [0002] In recent years, with the continuous improvement of living standards and the rise of fast foodism, people have gradually become accustomed to a fast and convenient lifestyle. Information technology has also followed this trend and continued to improve the quality of information technology products, only to better meet the needs of the public. Among them, information technology products take audio-visual playback devices as the mainstream in the market. How to match video effects when playing audio-visual materials has become the focus of enterprise research and development today. [0003] The most common video effects are subtitle special effects, among which subtitle scrolling...

Claims

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Application Information

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IPC IPC(8): H04N5/262H04N5/278
Inventor 王俊翔林卓毅
Owner VIA TECH INC
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