First and second virtual serial ports utilized to perform virtual transmissions through parallel port via first and second transmission/reception buffer region
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United States of America Patent
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-
Jul 17, 2001
Grant Date -
N/A
app pub date -
Oct 29, 1998
filing date -
Oct 29, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
A virtual transmission system comprises a first and second virtual serial 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; and a 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.
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