Toshiba TLP511E, TLP510E, TLP510U, TLP511U manual RGB Signal Amplifier Section, VIDEO/VD TC7S08F

The sync signal process circuit is applicable to the HD, VD, CS (composite sync), SYNC/G signals. HD (CS), VD and G signals developed from QB011 enter the sync separation IC (QB012: M52347FP). The sync separation priority of the sync separation IC is; HD, VD, CS and SYNC ON G in this order.

The HD and VD signals sync-separated enter the buffers QB019 and QB020 (TC7S08F) and the outputs are sent to the digital PC board.

RGB IN

7-4-3. RGB Signal Amplifier Section

The RGB signal processing section employs a wide band RGB signal IC applicable to the XGA signal. Fig. 7-4-3 shows a block diagram of QB024 (M52320SP). The control items of the IC are five items; main contrast, brightness and sub contrast for each RGB.

The brightness and main contrast controls are provided for the user adjustment, and the sub contrast are provided to equal the R, G, B levels when entering A/D converter of the digital PC board.

13

14

Q512

TC74HCT240AF

HD/CS

VD

QB011

M52348FP

2R

5G

7B

8	RGB/HD	QB012
9	RGB/VD
		M52347FP

	QB019
	TC7S08F
1	VDD 5	+5V
2
3	4	HD
	QB020

	11	VIDEO/R		1		20
	13	VIDEO/G	G OUT 25	4	G IN	17
	16	VIDEO/B	H OUT 22	6	H/CS	14 HD
QV005	17 VIDEO/HD		V OUT 21	8	IN	13 VD
					V IN
TDA9141	18	VIDEO/VD

	TC7S08F
1	VDD 5	+5V
2
3	4	VD

Fig 7-4-2

				VCC2 (G)	SUB OSD
OUTPUT (R)	HOLD (R)		GND2 (R)		ADJUST (G) OUTPUT (R)			HOLD (B)		GND2 (B)
MAIN		SUB OSD							SUB OSD		MAIN
OSD ADJUST VCC2 (R)		ADJUST (R) OUTPUT (G) HOLD (G)				GND2 (G)	VCC2 (B)		ADJUST (B)		NC BRIGHTNESS

36	35	34	33	32	31	30	29	28	27	26	25	24	23	22	20	19	18
				R					G					B
			BRIGHTNESS					BRIGHTNESS					BRIGHTNESS
	R			R			G		G			B		B
	AMP			HOLD			AMP		HOLD			AMP		HOLD
	R			R			G		G			B		B
	OSD MIX		BLANKING			OSD MIX		BLANKING			OSD MIX		BLANKING
	R			R			G		G			B		B
	CLAMP		CONTRAST			CLAMP		CONTRAST			CLAMP		CONTRAST
1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18

BLK IN	INPUT (R)	OSD IN (R)	VCC1 (G) SUB CONTRAST GND2 (G)				INPUT (B)	OSD IN (B)	MAIN
					(G)			CONTRAST
	VCC1 (R) SUB CONTRAST GND2 (R)			INPUT (G)	GND IN (G)	VCC1 (B) SUB CONTRAST GND2 (B)			CP IN
		(R)						(B)

Fig. 7-4-3

7-13