Research Of Electronic Whiteboard System Base On DSP

Electronic whiteboard is a modern multimedia teaching tools mainly be used in classroom teaching conferences and live demonstration and so on, which is combined of traditional teaching methods and modern multimedia technology, computer technology combining. Electronic whiteboard using the wireless signals pen, freed from the shackle of keyboard and the mouse. Make the operator can more intuitive will thought communicating to everyone. The design of interactive electronic board system is made up of computer, whiteboard, signal pen, receiver and DSP signal processing system.It was taked the TI company production TMS320C5509 DSP as the core processor, which is collecting, processing, analysising and judging ultrasonic signal.The processing speed, accuracy and storage capacity and reduce power consumption processing has improved a lot. System designs transmission and reception units of ultrasonic and infrared signal, it is realized the wireless transmission and reception of the signal pen. Signal reception units take CX20106A detection chip that analyze and judge ultrasonic signal. According to other electronic whiteboard, not only software design process is over-simplication, but also make whole system cost reduced greatly, so this product can accumulates promotion. At the same time in order to complete to interacte the DSP and computer information, it is uses TI company production asynchronous communication module TL16C550 to achieve data serial transmission of DSP and computer. And it is uses Flash chips AM29LV800 and SDRAM chip HY57V641620ETP to realize memory expansion.Finally paper introduces the system optimization and overall test, various commissioning results is proved the whole system realized the function of electronic whiteboard system base on DSP.