| 摘要 |
<p>Disclosed is a portable CD player for reading out data from a CD separately recorded with an audio signal and caption data or index data, respectively, and outputting the read-out audio signal and caption data or index data in such a manner that they are synchronized with each other. An audio CD or data CD is also provided which is separately recorded with an audio signal or digital audio signal, and caption data or index data including or not including the caption data, respectively. During the playback, the audio CD or data CD exhibits a considerably reduced noise generation rate, as compared to conventional cases in which an audio signal and caption data are recorded in a mixed manner. The audio CD or data CD can be used, using a conventional driver. The user can obtain an improved learning effect, using the portable CD player. Since data can be received from a remote place, there is an advantage in that it is possible to achieve an easy data update</p> |
