TA1360AFG_05 Datasheet, PDF (58/110 Pages) Toshiba Semiconductor – YCbCr/YPbPr Signal and Sync Processor for Digital TV, Progressive Scan TV and Double Scan TV

TA1360AFG
Note No.
Characteristics
SW71
P17 DC restoration rate correction B
gain
Test Conditions
SW Mode
SW70 SW68 SW64
B
C
B
SW74
ON 1.
2.
3.
4.
5.
6.
Test Method (Test condition: V_CC = 9 V/2 V, Ta = 25 ± 3°C)
Set DC restoration rate correction point to minimum (000), DC restoration rate correction limit point to 80%
(11), and connect external power supply PS1 to #68.
Monitor DC level of #12 picture period. Set PS1 to V₆₈ + 0.7 V, and adjust uncolor so that DC level is + 0.7.
Set DC restoration correction rate to minimum (000), and measure V_DT1 and V_DT2 of V₆₈ [V] and V₆₈ + 0.1
V as shown in the figure below.
Set #68 to V₆₈ + 0.1 V, DC restoration correction rate to maximum (111), and measure V_DT3.
Set DC restoration correction rate SW to less than 100 % (1), #68 to V₆₈ + 0.1 V, DC restoration correction
rate to maximum (111), and measure V_DT4.
Calculate ADT₁₀₀, ADT₁₃₅, and ADT₆₅ using following equations.
ADT₁₀₀ = (V_DT2 [V] − V_DT1 [V]) ÷ 0.1 [V]
ADT₁₃₅ = (V_DT3 [V] − V_DT1 [V]) ÷ 0.1 [V]
ADT₆₅ = 1 − ( (V_DT2 [V] − V_DT4 [V]) ÷ 0.1 [V])
V₆₈ [V]
Picture period
V_DT1
V₆₈ + 0.1 V
#12 waveform
V_DT2 V_DT3
V_DT4
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2005-08-18