Design And Realization Of The Digital Photo Frame Based On ADSP-BF533

Digital photo frame is a product which is used to store and display the digital photo. With the popularity of digital cameras, developing the digital photo frame based on embedded system has become a hot in the field of consumer electronics products. This thesis designs a digital photo frame based on ADSP-BF533, it has practical application value.The system is composed of ADSP-BF533, SD card, TFT-LCD, and AD1836. It realizes reading the FAT16 file in SD card, decoding the JPEG image, displaying the image in TFT-LCD, and playing the audio. In the process of decoding the JPEG image, I adopt row and column method and convert 8×8 two-dimensional IDCT into 8 rows and 8 columns of one-dimensional IDCT, and use chen-wang algorithm to caculate the one-dimensional IDCT, to improve the decoding speed.Through the test of decoding speed and the image quality, the results show that the system can reach the requirement of image reconfiguration and the target of real-time decoding and display images. It has the characteristics of low cost, easy to upgrade, and has good application prospects.