TA1360AFG_05 Datasheet, PDF (54/110 Pages) Toshiba Semiconductor – YCbCr/YPbPr Signal and Sync Processor for Digital TV, Progressive Scan TV and Double Scan TV

TA1360AFG
Note No.
Characteristics
P13 Light area Yγ correction point
SW71
A
Test Conditions
SW Mode
SW70 SW68 SW64
B
C
A
SW74
Test Method (Test condition: V_CC = 9 V/2 V, Ta = 25 ± 3°C)
OPEN 1. Connect external power supply PS1 to #68, external power supply PS2 to TP1, and set PS2 to 0 V.
2. Set dark area static Yγ gain [1C] to 0dB [17], and bright area static Yγ gain [1C] to 0dB [17].
3. Increase PS1 from V₆₈ [V] to V₆₈ [V] + 0.7 [V], and plot the voltage change of #12 picture period. Take 0 for
V₆₈ [V] when the change is plotted. (V₆₈ is pin voltage of pin 68)
4. Set light area static Yγ gain [1C] to MAX [04].
5. Increase PS1 from V₆₈ [V] to V₆₈ [V] + 0.7 [V], and plot the voltage change of #12 picture period.
6. Measure VLGP using the following figure, and PLGP using the following equation.
LGP = (VLGP [V] − V₆₈ [V])/0.7 [V] × 100 (IRE)
#12 voltage [V]
ON
OFF
#68 voltage
V₆₈
VLGP _{V68 + 0.7 V}
(100IRE)
54
2005-08-18