Yunn-Yen Chen, Jih-Kwon Peir* and Chung-Ta King#
ATC, Computer and Communication Research Lab.
Industrial Technology Research Institute
Hsinchu, Taiwan 310, R.O.C.
* Department of Computer and Information Science
University of Florida Gainesville, FL, 32611
# Department of Computer Science
National Tsing Hua University
Hsinchu, Taiwan 300, R.O.C.