Patent ID: 6263384
Filing Date: 2001-07-17
Classification: G06F

Abstract:
A virtual transmission system comprising:first and second virtual serial ports provided virtually within a single data processing device, separately from physical parallel ports;a first transmission/reception buffer region set with the first virtual serial port as a write port and the second virtual serial port as a read out port;a second transmission/reception buffer region set with the first virtual serial port as a read out port and the second virtual serial port as a write port; anda control portion for writing data outputted from the first virtual serial port into the first transmission/reception buffer region, for outputting data written in the first transmission/reception buffer region to the second virtual serial port, for writing data outputted from the second virtual serial port into the second transmission/reception buffer region, and for outputting data written in the second virtual serial port to the first transmission/reception buffer region.