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In recent years, due to the maturity of embedded systems and techniques of multimedia chip sets, applications of embedded multimedia players have been becoming a new trend in the advertisement market. Because of compact, light weight, and low cost, embedded multimedia players have replaced traditional DVD players and PC-based advertising machines. With the growing diverse demands in the applications of embedded multimedia players in the advertisement market, conventional sequential playing methods fail to satisfy these requirements. A flexible playing schedule algorithm must allow customers to schedule some particular CF films played at the designated date and time to maximize the advertisement effect. This thesis tries to develop a flexible and powerful playing schedule algorithm satisfying diverse needs. The proposed scheduling algorithm was implemented on an embedded system with the ES6425 chip of ESS foundry as its core, which forms an embedded multimedia player. The system also contains the communication technique with the DS1307 real time clock control chip, date and time setting interface, and automatic switch on/off algorithm. In addition, a PC-based scheduling program was developed for customers who can easily edit their own playing schedules. These edited playing schedules are then stored in CF memory cards. Finally, the embedded multimedia player plays films according to the schedules stored in the CF card.
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