U.S. Patent
061. 30, 2001
Sheet 4 6f 6
US 6,310,609 B1
402
400
\
ALL LIGHTS
ON
406 \
/4o4
l
ALL LIGHTS
OFF
“
p
4?
ILLUMINATE
AVAILABLE 4
4|4
KEYS
/
p
‘__1 726
PERFORM
FUNCTION
END OF
SEQUENCE
PERFORM
FUNCTION
YES
?
‘420
N0
ILLU MINATE
NE XT KEY ‘——--—'
IN SEQUENCE
424
