Integrated modem which employs a host processor as its controller
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 8, 1992
Grant Date -
N/A
app pub date -
May 2, 1988
filing date -
May 2, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An embedded modem that does not require a dedicated controller and operates with existing computer to interpret new and redefined communications interrupt requests. In response to an interrupt request, the control of the processor is transferred from the communications software to a driver program stored in the main memory for the processor. Under the operation of the driver program, the processor interprets control characters and causes the appropriate commands to be carried out in the modem. Once these commands have been processed, the control of the processor reverts back to the communications program. The processor thereby functions as a virtual controller that is interpreted to be an external controller by the communications program.
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