| 摘要 |
PROBLEM TO BE SOLVED: To provide an audio storage medium that does not produce noise when reproduced as an audio medium and whose data cannot be modified unnecessarily. SOLUTION: Audio data encoded in a specific audio format and divided so as to have a predetermined length or less is written on each container packet. Program update data divided into data for each step is written on an unused space in a space where the audio data of an accordingly selected container packet is written. A container packet apart from a container packet where immediately preceding program update data is written by at least a time required for the program update step using the immediately preceding program update data is selected as a container packet for writing each program update data thereon. COPYRIGHT: (C)2012,JPO&INPIT |
