Abstract
In another optical telemeter system developed by one of the authors with others, data is input through the parallel port of the personal computer. Recently, note book computers with no parallel port but with USB port have increased. Thus, an optical telemeter system with input through a USB port of personal computer has been developed. To achieve faster transmission rates of data the both procedures are adopted. On the micro-controller of data sending side, the A/D conversion is executed at the same time as the preceding data is being sent out to LED. On another micro-controller of data receiving side, the one-packet data are saved in one buffer memory at the same time as the preceding one-packet data in another buffer memory are being sent to personal computer through the USB port. It has been confirmed that the data transmission rate of 8,385data/s for 12bit data is achieved under 230.4kbps.
