Ctv - Present Factory Data

Table of Contents CTV CIRCUIT ( CB1M PROJECT )

ENGINEERING GROUP Function of each item in Factory data



Overview 



EEPROM & FACTORY DATA

Explanation on Pages           

EEPROM Option 1 Option 2 Hotel Option Deflection Video Adjust 1 Video Adjust 2 Video Adjust 3 Video Adjust 4 YC Delay Others

July 30, 2009

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EEPROM

IC-EEPROM : 24C16 - 16Kbit Serial I2C Bus EEPROM Memory Capacity 16 08 04 02 01

16Kbit ( 2Kbyte: 2048 x 8 ) 08Kbit ( 1Kbyte: 1024 x 8 ) 04Kbit ( 512byte: 512 x 8 ) 02Kbit ( 256byte: 256 x 8 ) 01Kbit ( 128byte: 128 x 8 )

ip Ch

a En

bl e

Memory capacity Address : 0000H  FFFFH

Memory area is used for memory local. Address : 0000H  9003H

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EEPROM – I2C

I2C- BUS

Micom

Eeprom

Tuner

Master

Slave

Slave

TRANSMITTER & RECEIVER

SDA SCL I2C BUS PROTOCOL

WRITE CYCLE POLLING USING ACK

WRITE & READ DATA

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Option 1 1.

Video Mute : 100msec ~ 1000msec. This is delay time of video signal when changing channel.

2.

System : CS/CZ Select mode between Multi mode ( PAL + NTSC ) and NTSC mode.

3.

AV Jack : 1RCA/2RCA/2RCA+S/2RCA+DVD/2RCA+S+DVD Source list.

4.

Sound : Stereo/ Nicam/ Line Stereo/ V-dolby

5.

High Deviation : ON / OFF when MICOM detect modulation is very high , MICOM will decrease sound to decrease distortion if not , waveform will cut , distortion happen. For example : if The first time 100% modulation sound input = 10W The second time 400% modulation input =15 W The third time 100% modulation sound input = 5W  Because when 400% modulation , MICOM detect and decreas signal Power off/on all become initial...

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Video900

Video100

Video_OFF

Option 1 6.

Volume Curve :Large/Small/East Asia Sound will be increased from 0W to 10W as below function: Large( V )

Voltage

Volume Curve

Sound

Small ( V ) East Asia (V )

9 8 7 6 5

100%

4 3

rge La

2 1

all Sm

0

100

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0 9

0 8

7 0

0 6

5 0

0 4

0

3 0

lu V o

2

m e

0 1 0

A

0

st Ea

sia

Volume

Volume Volume

0

10

20

30

40

50

60

70

80

90

100

Large ( V )

0

0.64

1.25

2.08

3.08

3.9

4.68

5.36

6.12

7.1

7.88

Small ( V )

0

0.48

0.8

1.36

2.12

2.9

3.5

4.5

5.8

6.9

7.88

East Asia (V )

0

0.8

1.8

2.76

4.36

5.68

6.52

7.08

7.52

7.68

7.88

FACTORY DATA-CB1M PROJECT

Option 1 7.

Initial Lang. : English/Indonesia/Malaysia/Thailand/Vietnam Language default after reset.

8.

TTX :OSD Language/West Europe/East Europe/Russian/ Ukranian/Greek-Turkey/Off

9.

TTX Flof / List : Flof / List

10. V-Guard : ON/OFF V-Guard is V-SYNC signal feedback to protect. PIN8 : V_rms = 1V , TV power off PIN8 : V_rms = 0V , TV power on. Example : If IC301 broken , do not have vertical feedback , so TV power off If V-guard off , when have no feedback , TV power on --> Other Item was broken ( Delete D204 to simulate )

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Option 1 11. Sound Detect : BG/DK/I/M Sound default after reset. 12. DNIe JR : ON/OFF It’s used to ON or OFF DNIe function.

13. Indonesia Model : ON/OFF Sound Equalizer Setting is different. (Only use for Indonesia model.)

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Option 1 14. Lang. Option : Iran/Arab Chose language between Iran & Arab

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Option 2 1.

2.

LNA : ON/OFF LNA - ( Low noise Amplifier ) It’s used to ON or OFF LNA function. ( S65A-S66A )

X-Ray Protect : ON/OFF It’s only used for USA, Canada ( KS7B ). If high voltage is very high , Micom detect  Power off

Schematic - KS7B

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Option 2 3.

Sound Carrier Mute : ON/OFF

4.

Sound Mode : India/Europe

5.

Tack key : ON/OFF ON : Can use Tack key, Set will turn on automatic with Aging mode OFF : Can not use Tack key, Set will turn on automatic without Aging mode

6.

CRT : 4:3/16:9 Add wide function in menu user if chose 16:9 in factory data.

7.

Size : ON/OFF Use ON/OFF size ZOOM in menu user.

8.

PLM1000 : ON/OFF It is for KSDA HDMI module Sub PCB, The same with feature box Thai model need HDMI function

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Wide function

Hotel Option 1.

Hotel mode : ON/OFF If hotel mode is ON, User cannot use channel menu.

2.

Power on Channel : 0~99 Channel default after reset

3.

Power on Volume : 0~100 Volume default after reset

4.

Max volume : 0~100 Chose max volume value for user.

5.

Pannel Button Lock : ON/OFF If Pannel Button Lock is ON, User cannot use Button on Cabinet. ( Hotel model : ON )

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Hotel Option 6.

Power On Source : OFF/TV/AV1/AV2/DVD Chose source default after reset.

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Deflection 0.

V-Amp : 0 ~ 63 Adjust VA (Vertical Amplitude) to correct picture height.

63

Normal

0

V_VDP+ V_AMP_63

I_ver

t

t

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Normal

V_AMP_0

Deflection 1.

V-Shift : 0 ~ 63 Adjust VS (Vertical Shift) to centre the picture vertical.

63

Normal

0

V_VDP+ V_Shift_63

I_ver

t

t

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Normal

V_Shift_0

Deflection 2.

H-EW : 0 ~ 63 Align the East-West amplitude to adjust the correct width (use the width of the horizontal line in the centre to determine the final picture width).

63

Normal

0

H_EW_63

V_ew

t

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Normal

H_WE_0

Deflection 3.

H-Shift : 0 ~ 63 Adjust HS (Horizontal Shift) to centre the picture horizontal. Erase Time

H-Sync from CBVS input

H-Sync from Micom out

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Deflection 4.

V-Linearity : 0 ~ 63

63

Normal

0

V_VDP+

V_Linearity_63

I_ver

t

t

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Normal

V-Linearity_0

Deflection 5.

V-S.Correction : 0 ~ 63

0

Normal

63

V_VDP+ V_S.Correction_0

I_ver

t

t

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Normal

V_S.Correction_63

Deflection 6.

V-Slope : 0 ~ 63

63

Normal

0

V_VDP+

V_Slope_63

I_ver

t

t

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Normal

V_Slope_0

Deflection 7.

V-Scroll : 0 ~ 63

V-Scroll = V-Shift + Trapezium

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Deflection 8.

V- ZOOM: 0 ~ 63 Function of V-ZOOM & V-AMP is the same. However, V-ZOOM only effect when user chọn Size ZOOM in Menu User.

63

Normal

0

V_VDP+ V_ZOOM_63

I_ver

t

t

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Normal

V_ZOOM_0

Deflection 9.

H-Parabola : 0 ~ 63 Align the Parabola Width to straighten the vertical lines at the sides.

63

Normal

0

H-Parabola_63

V_ew

t

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Normal

H-Parabola_0

Deflection 10. Upper Coner : 0 ~ 63 Align the Upper Corner to straighten the top of the vertical lines at the side

0

Normal

63

Upper Coner _ 0

V_ew

t

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Normal

Upper Coner _ 63

Deflection 11. Low Coner : 0 ~ 63 Align the Lower Corner to straighten the bottom of the vertical lines at the sides

0

Normal

63

Low Conner _ 63

V_ew

t

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Normal

Low Coner _ 0

Deflection 12.

Trapezium : 0 ~ 63 Trapezium corrects the position of the vertical lines at the sides: can be bend inwards or outwards. The vertical lines remain straight. Set in neutral position before starting alignment

63

Normal

0

Trapezuim_63

V_ew

t

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Normal

Trapezuim_0

Video Adjust 1 - White Balance Why do you adjust white balance ??? What is “white balance” ??? It may be called that red, green and blue lights must combine in definite proportions to produce white light. The three phosphors have different efficiencies. Also the three guns may not have identical characteristics and cut-off point. Therefore, it becomes necessary to incorporate suitable adjustments such that monochrome information is reproduced correctly for all settings of the contrast control. In practice, this amounts to two distinct steps.

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Video Adjust 1 - White Balance Decode color

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by B G xyY R re C IE u s ea ar d M nd Sta

Video Adjust 1 - White Balance Chromaticity Diagram – Standard CIE xyY

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highlight adjustment because the high and low light adjustment can influence each other.

Gray

White

Black

White

Black

White

To adjust white balance : Step 1 : Adjustments of Low Light Level R cutoff ： Fine black level offset R (BLOR) G cutoff: Fine black level offset G (BLOG) B cutoff ： Fine black level offset B (BLOB) Step 2 : Adjustments of High Light Level R Drive: White point R(WPR) G Drive: White point G(WPG) B Drive: White point B(WPB)  It necessary repeat lowlight and/or V

Black

Video Adjust 1 – RGB Cut-off / RGB Drive

White

W

VB

Black

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Video Adjust 1

* Sub bright: Controls DC level on RGB outputs. * Notes : Brightness MICOM adjust from 0~63 , menu 0~39 , factory sub Contrast 40~ 63

* Sub contrast: Control RGB output amplitude. * Notes : Contrast MICOM adjust from 0~63 , menu 0~39 , factory sub Bright 40~63

* G2 Adjust Bright : 0 ~ 63 A brightness control is provided to allows the RGB upper output voltage level to be modified. The RGB amplitude may be varied between 60% and 100% * Notes : G2 Adjust Bright not effect to G2 Voltage. It only effect to G2 Screen : G2 Screen NG – G2 Screen OK – G2 Screen NG

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Video Adjust 1

* Blue-screen Contrast

-Control Blue contrast in Blue-Screen mode.

* AKB Option: 0 or 1 Blanks (mutes) the RGB outputs to prevent visible effects during e.g. channel changes. Also forces brightness to nominal and reduces the RGB output voltage to 1.1V below the black level

* Cathode Drive Level - The TV system will control the black level of the RGB output signals to the ‘low’ reference current and not on the cut off point of the cathode. In this way spreads in the picture tube characteristics will not be taken into account. In this condition the settings of the “white point control registers”.

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Video Adjust 1 – TTX Bright – TTX RGB Bright – TTX Position * TTX bright -To adjust the brightness of the TTX display. Notes : Text, Control & Graphics Block control.

* TTX RGB bright -To adjust the RGB character bright output of TTX Notes : Text, Control & Graphics Block control.

* TTX position -To adjust the position of TTX display on the screen. Notes : Text, Control & Graphics Block control.

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Other – Dynamic Picture Improvement

* Service Blanking

- The vertical slope alignment VS is meant to compensate for spread on the value of the external saw-tooth capacitor (major) and spread on the internal reference current source (minor). This is the first vertical alignment to execute in order to adjust the internal levels to exact nominal value. These nominal values are important to ensure that all derived correction waveforms are correct. Use SBL (service blanking) for correct alignment. - The SBL (Service Blanking) bit blanks the bottom half of the picture, starting exactly in the middle of the vertical scan (deflection currents are zero). This bit is intended to align the vertical parameter VS in order to compensate for component tolerances.

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Other – Dynamic Picture Improvement

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Other – Dynamic Picture Improvement

I. Peaking principle

The YPrPb signals are supplied first to the peaking circuit as indicated in block diagram. The principle of peaking is best explained using Figure . Peaking is active on all selected signals.

The peaking signal (indicated by D above) is obtained by summing -1/2Y + Y(t) - 1/2Y(2t). In this case RPO1/0=00 and RPA1/0=00 and the gain of the amplifiers are -1/2, 1 and -1/2 respectively. Engineering Group Copyright © 2009 Samsung Vina Electronics Co., Ltd. All rights reserved | Confidential

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Other – Dynamic Picture Improvement

I.1 Ratio of pre- and overshoot

By

changing RPO1/0 the ratio of positive/negative overshoots can be changed according to Table 31 and as indicated in Figure 15. It is desirable to have asymmetric peaking as positive overshoots (i.e. direction white) can cause blooming and negative overshoots (i.e. direction black) do not. In order to maintain the sharpness impression for positive overshoots, the degree of asymmetry can be changed by setting RPO1/0 as indicated in Table 31. Also, the gamma of the CRT can cause more amplification of positive overshoots than negative overshoots, which can be compensated by the asymmetrical peaking. .

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Other – Dynamic Picture Improvement

I.2 Ratio of pre to after overshoot

By changing RPA1/0, the ratio of pre/after overshoots can be changed according to Table 32. This can be used to compensate if the Y signal (from tuner) has an asymmetric 2T pulse response.

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Other – Dynamic Picture Improvement

I.3 Peaking frequency The peaking frequency can be selected according to Table 33 where this is realized by changing the delay length in the delay sections. The peaking frequency is related to the delay by f = 1 / (2t). The peaking frequency can be set to 2.7 or 3.1 for 3.6MHz color systems and to 3.1 or 3.6 for4.43MHz color systems. Since the peaking also acts on YPrPb signals, the peaking frequency can be set then to the highest frequency, which is at 4MHz for this mode.

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Other – Dynamic Picture Improvement

I.4 Video dependent coring Since peaking has the main disadvantage of increasing noise at higher frequencies it is necessary to have coring which reduces the peaking for small transients. The coring is video dependent meaning it is only active on the low luminance parts of the picture (the parts of the picture in which noise is best visible). Consequently the peaking does not amplify noise in darker scene areas. Four different coring settings can be selected by means of the COR1/0 bits; see Table 34

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Other – Dynamic Picture Improvement

I.5 Peaking amplifier The peaking signal after the coring function is amplified by the peaking control according to the peaking characteristic in Figure 16. Therefore the peaking overshoot is zero for a DAC setting of 13DEC, is negative for the range (0..13DEC), which give de-peaking and positive for the range (13..63DEC). The peaking signal is then added with Y(t) to realize the new Y signal for further Y processing. Because the Y signal has undergone a time delay of t then both Pr and Pb signals will also be delayed with the same delay.

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Other – Dynamic Picture Improvement

I.6 Bypassing the peaking For higher bandwidth (e.g. for external RGB or YPrPb sources) it is possible to bypass the peaking. (Actually only the delay sections of the peaking are bypassed.)

Note: Bypassing the peaking delay will also influence the delay difference between the RGB output and the SVM output.

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Other – Dynamic Picture Improvement

I.7.1 Black stretch The purpose of the black stretch is to enhance the contrast impression of pictures that contain no or very little black. This is done by increasing gain in the gray parts of the video depending on how much black is detected in the signal.

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Other – Dynamic Picture Improvement

I.7.2 Detector The black stretch detector continuously monitors the black content of the video. It consists of a peak detector that stores the minimum luma level in a capacitor, the system has an attack/decay time constant of approximately 200ms.The difference between the instantaneous luma level and the level stored in the capacitor determines the amount of stretching gain.

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Other – Dynamic Picture Improvement

I.7.3 Corrector The black stretch characteristic of the corrector is shown in Figure 19. The black stretch is only active on video levels below 50IRE. The maximum black stretch depth can be chosen (20IRE or 40IRE) by means of the BSD bit. Figure 19 shows that at maximum black stretch action the corrector will stretch dark parts of the input signal far below black

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Other – Dynamic Picture Improvement

I.7.4 White stretch The purpose of the white stretch is to increase the contrast of pictures that for some reason have a low average luminance value.

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Other – Dynamic Picture Improvement

I.7.5 Luma dependent brightness reduction (Also known as ‘DC transfer ratio’ or TFR)

For optimal contrast impression contrast setting in most TV's is set high. As a result bright parts of a pictures may loose details because of clipping or compression by the soft clipper. For pictures with high average picture levels, good contrast in bright areas is probably more important than contrast in dark areas. In that case the contrast of the bright areas can be improved by reducing the brightness (sacrificing dark details for bright ones). The luma dependent brightness reduction in UOC-TOP reduces brightness depending upon the average picture information.

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Other – Dynamic Picture Improvement

I.8 Black level offset control A black level offset control adjustment is realized in order to meet the market requirement where in some regions the white balance at low light is different to high light. For AV-stereo and stereo type, the three 6 bit DACs for black level offset adjustment on the R(Pr) and G(Pb) and B are available, the nominal setting is 32DEC (= no correction). For MONO type, the three 4 bit DACs for black level offset adjustment on the R(Pr) and G(Pb) and B are available, the nominal setting is 16DEC (= no correction). It is set in different modes by OUV according to Table 41.

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Other – Dynamic Picture Improvement

I.8 Black level offset control For the N2 versions, the possibilities for black level offset control have been extended and combined and are equal for Mono, AV-Stereo and Stereo. So for all N2 versions the following is valid: • 6 bit BLOR/BLOG/BLOB control range +/- 270mV • COF bit to increase range from +/- 270mV to +/- 450mV • 4 bit BLOC course black level offset control range +/- 500mV BLOC and COF are only active when the CCC loop is not used (NBL=1 and AKB=1). This way a simple, accurate and flexible cut-off alignment is possible.

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Other – Dynamic Picture Improvement

I.9 Tint control The phase of the incoming signal (CVBS, RGB or YPrPb) is adjusted with a 6-bit DAC and is independent of standard selected whether it is PAL, NTSC or SECAM. This function is controlled by TUV and a 6-bit DAC for the tint control (U/V phase control). The tint control can be switched off when TUV=0 and active when TUV=1 The function is specifically for DVD signals (esp. NTSC standards) as the present hue (tint) control for CVBS modes cannot be used for phase control of DVD signals.

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Other – Dynamic Picture Improvement

I.10 Dynamic skin tone control Small errors in color angle may not be immediately visible on most objects but can easily be noticed in some ones face (e.g. a greenish skin color). This feature dynamically corrects skin color for signals with small color hue errors without having to change the hue, and without affecting other colors.

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Other – Dynamic Picture Improvement

I.10 Dynamic skin tone control The U and V signals are detected in a window around the skin tone region and within this detection window the corrector shifts the skin color to a correction angle in the UV plane as shown in Figure . Correction depends on color angle: • Tones at the outer limits of the detection window will be hardly corrected. • Also the tones very near the skin tone axis will be hardly corrected. • Tones in between this will be corrected most Correction also depends on color saturation: • No correction on poorly saturated colors • Maximum correction for 50% saturated colors • No correction on highly saturated colors

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Other – Dynamic Picture Improvement

I.11 Saturation The saturation adjustment is realized with a 6-bit DAC and it controls the UV amplitudes. It is active on all CVBS and Y/C signals as well as for the external YUV/RGB/YPrPb signals (but not on OSD/Teletext/CC from TCG).

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Other – Dynamic Picture Improvement

I.12 Matrix After the saturation control, the UV signals are supplied to the color difference matrix. The outputs from the color difference matrix are R-Y, B-Y and G-Y signals and these are supplied to the RGB adder in order to generate the RGB signals for further RGB processing.

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Other – Dynamic Picture Improvement

I.12.1 Forcing PAL matrix RGB or YPrPb signals from external sources do not pass through the color decoder so for these signals the automatic matrix selection doesn't work. (An unstable CVBS signal can cause the matrix to toggle continuously between PAL and NTSC causing flickering in the picture from RGB or YPrPb. In that case it is useful that the matrix can be forced to PAL by setting MAT=1.

I.12.2 Forcing NTSC matrix For the same reason as mentioned above it might also sometimes be necessary to force the matrix to NTSC. This can be done by setting MTXF=1 (automatic).

I.12.3 Correct matrix selection Table 49 below shows which settings to use for which input condition. In case of YPrPb signals no color identification by the color decoder is possible. In that case the field frequency can help. If status bit FSI=0 (50Hz) it is probably a PAL signal, if FSI=1 (60Hz) it is most likely NTSC.

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The end

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