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PUBLICATIONS of the DSP DESIGN GROUP and the PTOLEMY PROJECT
Fusing Dataflow with Finite State Machines
by Bilung Lee
Memorandum UCB/ERL M96/20,
EECS, University of California, Berkeley, CA, USA 94720.
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ABSTRACT
The dataflow model of computation has been used extensively in signal
processing design, and is particularly convenient for numeric-intensive
computation of applications. Finite state machines (FSMs) have been developed
to solve a different class of problems, namely sequential control. In this
project, we propose to hierarchically nest the dataflow and FSM models of
computation. With the two models mixed, concurrency and hierarchy are
naturally supported in a manner similar to hierarchical FSMs, like Statecharts.
This provides a clean and simple mechanism for describing systems that combine
sophisticated signal processing with sophisticated control. We implement
the ideas in the Ptolemy software environment, which has been under
development at University of California at Berkeley.
Send comments to Bilung Lee at bilung@eecs.berkeley.edu.