<s>
Glitch	B-Error_Name
removal	I-Error_Name
is	O
the	O
elimination	O
of	O
glitchesunnecessary	O
signal	O
transitions	O
without	O
functionalityfrom	O
electronic	O
circuits	O
.	O
</s>
<s>
Glitch	B-Error_Name
power	O
comes	O
under	O
dynamic	O
dissipation	O
in	O
the	O
circuit	O
and	O
is	O
directly	O
proportional	O
to	O
switching	O
activity	O
.	O
</s>
<s>
Glitch	B-Error_Name
power	O
dissipation	O
is	O
20%	O
–	O
70%	O
of	O
total	O
power	O
dissipation	O
and	O
hence	O
glitching	B-Error_Name
should	O
be	O
eliminated	O
for	O
low	O
power	O
design	O
.	O
</s>
<s>
Switching	O
activity	O
occurs	O
due	O
to	O
signal	O
transitions	O
which	O
are	O
of	O
two	O
types	O
:	O
functional	O
transition	O
and	O
a	O
glitch	B-Error_Name
.	O
</s>
<s>
Glitches	B-Error_Name
are	O
dependent	O
on	O
signal	O
transitions	O
and	O
more	O
glitches	B-Error_Name
results	O
in	O
higher	O
power	O
dissipation	O
.	O
</s>
<s>
As	O
discussed	O
,	O
more	O
transition	O
results	O
in	O
more	O
glitches	B-Error_Name
and	O
hence	O
more	O
power	O
dissipation	O
.	O
</s>
<s>
To	O
minimize	O
glitch	B-Error_Name
occurrence	O
,	O
switching	O
activity	O
should	O
be	O
minimized	O
.	O
</s>
<s>
For	O
example	O
,	O
Gray	B-Device
code	I-Device
could	O
be	O
used	O
in	O
counters	O
instead	O
of	O
binary	O
code	O
,	O
since	O
every	O
increment	O
in	O
Gray	B-Device
code	I-Device
only	O
flips	O
one	O
bit	O
.	O
</s>
<s>
Gate	O
freezing	O
minimizes	O
power	O
dissipation	O
by	O
eliminating	O
glitching	B-Error_Name
.	O
</s>
<s>
This	O
method	O
consists	O
of	O
transforming	O
high	O
glitch	B-Error_Name
gates	O
into	O
modified	O
devices	O
which	O
filter	O
out	O
the	O
glitches	B-Error_Name
when	O
a	O
control	O
signal	O
is	O
applied	O
.	O
</s>
<s>
As	O
a	O
result	O
it	O
can	O
never	O
be	O
discharged	O
to	O
logic	O
0	O
and	O
glitches	B-Error_Name
are	O
prevented	O
.	O
</s>
<s>
Balanced	O
path	O
delay	O
will	O
avoid	O
glitches	B-Error_Name
in	O
the	O
output	O
.	O
</s>
<s>
Hazard	O
filtering	O
is	O
another	O
way	O
to	O
remove	O
glitching	B-Error_Name
.	O
</s>
<s>
Because	O
increasing	O
the	O
gate	O
size	O
also	O
increases	O
power	O
dissipation	O
,	O
gate-upsizing	O
is	O
only	O
used	O
when	O
power	O
saved	O
by	O
glitch	B-Error_Name
removal	I-Error_Name
is	O
more	O
than	O
the	O
power	O
dissipation	O
due	O
to	O
the	O
increase	O
in	O
size	O
.	O
</s>
<s>
Gate	O
sizing	O
affects	O
glitching	B-Error_Name
transitions	O
but	O
does	O
not	O
affect	O
the	O
functional	O
transition	O
.	O
</s>
