Subtitle encoding/decoding method and apparatus

Television – Image signal processing circuitry specific to television – Special effects

Patent

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Details

348600, 348599, 348569, H04N 5278, H04N 974

Patent

active

057318476

ABSTRACT:
Encoding and decoding of subtitle data is performed in real time. A buffer regulates a flow rate of the subtitle data to ensure that the appropriate subtitles are superimposed with the correct video picture. In encoding, subtitles are generated in correspondence to a video picture. The subtitles are separately encoded and multiplexed with the video picture for transmission. Upon decoding, the subtitles are selected at a time which corresponds to the display of the corresponding video picture. Since the subtitles are processed separately from the video data, the subtitles may be manipulated with great control; thus providing more flexibility in encoding and decoding.

REFERENCES:
patent: 5065143 (1991-11-01), Greaves

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