| 摘要 |
PURPOSE: A method for putting advertisements using digital captions is provided to simultaneously accumulate advertising caption data or official announcement caption data, when digital files are made out by accumulating caption data in a digital audio, then to display the accumulated advertising caption data on a caption display window in a digital audio file replaying process. Therefore, a commercial advertising or a public service advertising relating to a specific product is intensively performed. CONSTITUTION: If a digital audio data file is replayed, a CPU checks whether caption data is loaded into the digital file. If not, the CPU replays a digital audio only. If the caption data is loaded, the CPU decides whether caption advertising data exists. If not, the CPU replays the digital file with a digital caption audio mode. If the caption advertising data exists, the CPU decides whether advertising phrase data is valid. If so, the CPU simultaneously displays the caption advertising data and caption data synchronized with the digital audio on a character display area of a graphic LCD(Liquid Crystal Display) of a digital caption player, through region segmentations. The CPU decodes digital audio data, and outputs the decoded digital audio data as an analog voice signal via a DAC(Digital to Analog Converter) through a speaker or earphones. If the validity of the caption advertising data expires, the CPU outputs a usage announcement or an alarm message through an LCD screen.
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