TA1310ANG Datasheet, PDF (54/106 Pages) Toshiba Semiconductor – NTSC VIDEO, CHROMA, DEFLECTION, AND DISTORTION COMPENSATION IC (WITH YUV INTERFACE AND ACB)

TA1310ANG
NOTE
ITEM
A₅
RGB Output Half-Tone
Characteristics
A₆ RGB Output Amplitude
A₇
RGB Output Relative
Amplitude
SW₆
C
or
B
SW MODE
SW₄₅ SW₅₂ SW₅₃
1)
2)
B
A
A ₃₎
4)
5)
(#16 V_CC = 9 V, #37 V_CC = 9 V, #51 V_CC = 5 V, Ta = 25 ± 3°C)
MEASUREMENT METHOD
Input a rainbow signal (signal C-1) to the chroma input pin (TP45).
Burst : chroma = 200 mV_p-p : 200 mV_p-p.
Now set as follows :
Unicolor
Brightness
Color
Relative phase amplitude
: maximum (subaddress (00H), data (3F))
: maximum (subaddress (01H), data (7F))
: center (subaddress (02H), data (40))
: standard (subaddress (12H), data (00)).
Measure the amplitudes v_Ro, v_Go, and v_Bo of the R output pin (TP13), the G output pin (TP14), and the B output pin
(TP15).
Set SW₆ to B and repeat the test in 3) above. Measure the amplitudes v_RH, v_GH, and v_BH.
Calculate the half-tone characteristics v_RHo, v_GHo, and v_BHo by the following formulas.
vRHo
=
20Log
vRH
vRo
v _GHo
=
20Log
v _GH
v _Go
vBHo
=
20Log
vBH
vBo
1) Input a rainbow signal (signal C-1) to the chroma input pin (TP45).
Burst : chroma = 200 mV_p-p : 200 mV_p-p.
2) Now set as follows :
Unicolor : maximum (subaddress (00H), data (3F))
Brightness : maximum (subaddress (01H), data (7F))
Color
: center (subaddress (02H), data (40)).
3) Switch the relative phase amplitude (subaddress (12H)) and measure the amplitudes (peak values) of the RGB outputs
C
B
A
A
(TP13, TP14, TP15) according to the table below.
Subaddress (12H) data
TP13
TP14
TP15
STD (00)
DVD (40)
TSB (80)
DTV (C0)
vRSTD
vRDVD
vRTSB
vRDTV
vGSTD
vGDVD
vGTSB
vGDTV
vBSTD
vBDVD
vBTSB
vBDTV
1) Using the values obtained in A₀₆ above, calculate the relative amplitudes by the following formulas.
C
B
A
A
vRB ∗ ∗ ∗
=
vR_{∗∗∗}
vB_{∗∗∗}
vGB =
v _{G∗∗∗}
vB_{∗∗∗}
Note 1: Where the bus data are not specified, set the preset value.
Note 2: Ensure the sync signal is always input to TP38 (SYNC IN).
54
2005-09-20