TA1316AN Datasheet, PDF (100/115 Pages) Toshiba Semiconductor – YCbCr/YPbPr Signal and Sync Processor for Digital TV, Progressive Scan TV and Double Scan TV

TA1316AN
Note
Parameter
No.
T34 OSD blending
characteristic
SW3
A
↓
C
SW4
B
SW5
B
Test Conditions
SW mode
Test Method (test conditions: V_CC = 9 V/2 V, Ta = 25° ± 3°C)
SW33 SW34 SW35 SW37 SW38 SW39
A
A
A
A
A
B (1) Input signal 1 (f₀ = 100 kHz, picture period amplitude = 0.2 V_P-P) to pin 3.
↓
↓
↓ (2) Measure picture period amplitudes v41a, v42a and v43a on pins 41, 42 and 43 respectively.
B
B
B (3) Apply 5 V from external power supply to pin 51.
(4) Measure picture period amplitudes v41b, v42b and v43b on pins 41, 42 and 43 respectively.
(5) Determine in decibels v41b amplitude in relation to v41a; v42b amplitude in relation to v42a;
v43b amplitude in relation to v43a: α41TV1, α42TV1 and α43TV1.
(6) Repeat steps (3) to (5), applying 5 V from external power supply to pin 50, and measure
α41TV2, α42TV2 and α43TV2.
(7) Repeat steps (3) to (5), applying 5 V from external power supply to pins 50 and 51, and
measure α41TV3, α42TV3 and α43TV3.
(8) Set to SW3 to C; SW37, SW38, Sw39 to B.
(9) Input signal 1 (f₀ = 100 kHz, picture period amplitude = 0.2 V_P-P) to pins 37, 38 and 39.
(10) Apply 5 V from external power supply to pins 50 and 51.
(11) Measure picture period amplitudes v41c, v42c and v43c on pins 41, 42 and 43 respectively.
(12) Apply 5 V from external power supply to pin 50.
(13) Measure picture period amplitudes v41d, v42d and v43d on pins 41, 42 and 43 respectively.
(14) Determine in decibels v41d amplitude in relation to v41c; v42d amplitude in relation to v42c;
v43d amplitude in relation to v43c: α41OSD1, α42OSD1 and α43OSD1.
(15) Repeat steps (12) to (14), applying 5 V from external power supply to pin 51, and measure
α41OSD2, α42OSD2 and α43OSD2.
(16) Repeat steps (12) to (14), applying 5 V from external power supply to pins 50 and 51, and
measure α41OSD3, α42OSD3 and α43OSD3.
100
2002-10-04