| 摘要 |
<p>An anti-jamming infrared touch apparatus is provided, and includes one or more group of transmitting modules and receiving modules which arrange in the longitudinal and transverse direction, the transmitting modules connect to each other through a synchronous signal line, the receiving modules connect to a bus through a synchronous signal line. the receiving module and the transmitting module both include a slave microprocessor, the infrared positioning touch apparatus also includes a main microprocessor. The main microprocessor outputs a reference synchronous signal to the slave microprocessors of all the transmitting modules and the salve microprocessors of all the receiving modules, generates a specific synchronous signal from the reference synchronous signal configuration based on a need of the time sequences staggered, scans the 1<SUP>st</SUP> to the n<SUP>th</SUP> transmitting tube and receiving tube one by one, a pair of infrared transmitting and receiving tubes of each group of transmitting modules and receiving modules synchronously work, but the corresponding infrared tubes of at least one adjacent or apart other transmitting and receiving modules group utilize the asynchronous work mode. The anti-jamming infrared touch apparatus and the positioning method have strong anti-jamming ability, quickly processing speed and can be adopted for positioning the large screen.</p> |
