Using the HT45FH3T in the Active 3D Glasses
8
IR Signals and LCD Lens Control Description
Different 3D videos may generate different control signals, some IR signals have carrier
signals while some signals are carrier-free. This application uses an nVIDIA protocol
working together with IR signals with no carrier to implement decode operation and
control the LCD lenses.
Note that LCD lenses must be properly controlled to avoid the liquid crystals remaining at
the same voltage level for too long to avoid damage.
Basically, during a COM cycle, the positive level time and the negative level time are
same for the same lens. This demo board uses 3-Line control mode, the liquid crystal
level control and left/right lens control is shown below.
Summary of Contents for AN0315E
Page 9: ...Using the HT45FH3T in the Active 3D Glasses 9 PCB Layout Main Board Front Back...
Page 10: ...Using the HT45FH3T in the Active 3D Glasses 10 Receiver Board...
Page 12: ...Using the HT45FH3T in the Active 3D Glasses 12 Software Flowchart Main Architecture Flowchart...
Page 13: ...Using the HT45FH3T in the Active 3D Glasses 13 LCD Lenses Flowchart...
