| 摘要 |
<p>PURPOSE: To easily and efficiently establish a protocol by establishing the baud rate of a peripheral device, storing a message from the peripheral device into a packet, ending the packet after the lapse of prescribed time based on the rate without receiving any byte from the peripheral device, and transmitting that end to a host device. CONSTITUTION: A peripheral repeater box 21 is shown in the figure together with various peripheral devices connectable to this. These peripheral devices include a keyboard 23, mouse 25, tablet 27, knob 29 (namely a dial box), button 31, spare RS232 channel 22 and spare keyboard input 25. For connection to all the peripheral devices to be supported, four peripheral channels (corresponding to the keyboard 23, mouse 25, tablet 27 and knob 29) and one command channel (for communicating with a host device) are provided.</p> |
