TA1360AFG_05 Datasheet, PDF (46/110 Pages) Toshiba Semiconductor – YCbCr/YPbPr Signal and Sync Processor for Digital TV, Progressive Scan TV and Double Scan TV

Note No.
Characteristics
P04 Black stretch start point 2
TA1360AFG
SW71
A
Test Conditions
SW Mode
SW70 SW68 SW64
A
A
B
SW74
ON 1.
2.
3.
4.
5.
Test Method (Test condition: V_CC = 9 V/2 V, Ta = 25 ± 3°C)
Set black stretch point 1 to OFF (000), apply 0 V to #71, input TG7 LINEARITY to TPA, adjust amplitude on
#68 as shown in the figure below, set unicolor to center (1000000), and measure amplitude of #12 (R OUT),
V_P12.
Set black stretch point 1 to 001 (black stretch ON), connect external power supply PS to #74, and monitor
#12 (R OUT).
Set black stretch start point 2 data to minimum (00). When PS is V₇₄ (APL 0%), and V₇₄ + 1.0 V (APL
100%), determine black stretch start point difference ∆V₀₀ as shown in the figure below. (Monitor input
waveform and output waveform with an oscilloscope, adjust the both waveforms to have the same amplitude
(gradient), and compare them to determine the bend point of the output.)
Set black stretchstart point 2 data to maximum (11), determine black stretch start point difference ∆V1₁.
Calculate following equations.
P_BS1 = (∆V₀₀/V_P12) × 100
P_BS2 = (∆V₁₁/V_P12) × 100
LINEARITY
0.7 V_p-p
0.3 V_p-p
#68 waveform (linearity)
APL 100%
APL 0%
∆V_***
#12 (R OUT)
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2005-08-18