Method of passing right to use input/output port between softwares
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United States of America Patent
Stats
-
Apr 10, 2001
Grant Date -
N/A
app pub date -
Sep 29, 1998
filing date -
Sep 30, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Usually, only a printer driver can use an I/O port LPT1 connected with a printer. Therefore, an operation system of a personal computer does not anticipate a scanner driver, for example, using the I/O port LPT1. However, according to the present invention, the scanner driver controls the operation system to put the printer driver into a pending condition so that the scanner driver can use the I/O port. Therefore, when the printer has both a printer function and a scanner function, the scanner driver can drive the printer as a scanner via the I/O port LPT1.
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Family
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Cited Art Landscape
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