Design Of TouchScreen Control And Development Of Handwritten Character Recognition

With the development of micro-electronics technology, people make higher demands of electronical products, not only demand excellent performance, various functions, but also demand fine appearance and convenient operation. More and more consumers favor touchscreen for it's merits, and spur manufacturers apply touchscreen to more products. On account of touchscreen excellent performance, it become a big trend that touchsceen will substitute buttons. This bring a problem how to input Chinese character. So, designing a system of handwritten Chinese character on touchscreen is a job with important academic significance and great application.First, this paper introduced the variety of the touchscreen and the basis theory of four-wire resistive touchscreen, and designed the touchscreen control. Presents the basic methods of On-line handwritten Chinese character and realize the recognition of Chinese character using the combination of structural recognition and statistical recognition. The primary jobs of this paper is listed as follows:(1) Designed touchscreen control based on Cypress's PSoC family IC CY8C24423. Detected touched point in fireware program , and communicated with PC using UART. This control have the merits of flexible design , low cost , steady and reliable performance.(2) Adopted the stroke track coordinate data sended by touchscreen control, using the method of structual recognition combined with statistical recognition, and wirted the PC program applying Visual C++. Designed the arithmetic of preprocessing Chinese character, normalization, character extracting and pattern matching in the PC program, then recognized the Chinese character.