Appeal No. 1998-3359
Application 08/572,347
real time. Appellants disclose on page 8 of the
specification, by referring to figure 4, that each process
control cycle is set at a discrete time of 2 microseconds in
the preferred embodiment. Each control cycle allocates a
discrete time interval for motion control, communications and
idle. The motion control includes motor control, sensor
sampling, subsystem control and profile generation. The
system algorithm for motor control, sensor sampling and
processing, subsystem control, motor control profile
generation and communications provides sufficient time to
complete. The algorithms that execute during idle time
control the mailing machine user interface, message processing
and perform machine synchronization and high level control.
Appellants disclose on page 3 of the specification that the
machine control portion of the system is driven by a discrete
timer which causes the control algorithms to execute within a
specified time interval. When the discrete time interval
occurs, the machine control algorithms execute to completion.
These algorithms complete prior to the occurrence of the next
discrete interval.
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