LG PB60G, Service Manual

Page: 97 / 104

Introduction DMD Introduction DMD
Reference 2. What is DLP?
8 7
1 2 3 0 1 2 3 0 1 2 3 0 1 2 3 0
7
1 2 3 0 1 2 3 0 1 2 3 0 1 2 3 0
8
2 3 4
PWM Sequence Pattern
1
time
0
PWM Sequence Pattern with Bit-splitting?
1 2 2 4 4 3 3 4 4 4 4 4 4 3 3
time
0
4 2 3
example intensity 15/31 (48%) = binary 01111
example intensity 26/31 (84%) = binary 11010
1
one frame refresh period (1/frame rate)
0 3 3 3 3
example intensity 15/31 (48%) = binary 01111
example intensity 26/31 (84%) = binary 11010
1 2 2 4 4 4 4 4 4 4 4
one frame refresh period (1/frame rate)
0
2 1 4
example intensity 26/31 (84%) = binary 11010
3 0
Previous DMD Sequence Previous DMD Sequence
4 4 4 4 4 4 4
p y ( ) y
2 2 3 3 3 3 0 4 1
Present DMD Sequence Present DMD Sequence
Flickering & rainbow improvement Flickering & rainbow improvement
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Flickering & rainbow improvement Flickering & rainbow improvement