Daewoo DTK-28 Series, Service Manual, Page: 4 / 71

CP-850/F Service Manual
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5.3.1.7 RGB Front-End 49
5.3.1.8 Signal Processing 49
5.3.1.8.1 Horizontal Prescaler 49
5.3.1.8.2 Noise Reduction 50
5.3.1.8.3 Noise Measurement 50
5.3.1.8.4 Operation Modes 50
5.3.1.8.5 Digital 656 Output 50
5.3.2 BACK END 50
5.3.2.1 Digital Input Interface 50
5.3.2.2 Horizontal Scaler 50
5.3.2.3 Luma Contrast and Brightness 50
5.3.2.4 Black Level Expander/Compressor (BLEC) 50
5.3.2.5 Luma Sharpness Enhancer (LSE) 51
5.3.2.6 Dynamic Peaking 51
5.3.2.7 Luma Transient Improvement (LTI) 51
5.3.2.8 Mixing of Dynamic Peaking and LTI 51
5.3.2.9 Chroma Transient Improvement 51
5.3.2.10 Analog Back End 52
5.3.2.11 Analog RGB Insertion 52
5.3.2.12 CRT Measurement and Control 52
5.3.2.13 Synchronization and Deflection 53
5.3.2.14 EHT Compensation 53
5.4 MICROCONTROLLER 53
5.4.1 MICROCONTROLLER FEATURES 53
5.4.2 ACQUISITION FEATURES 54
5.4.3 PORTS 54
5.4.4 CONTROLLER I/O PIN CONFIGURATION AND FUNCTION TABLE 54
5.4.5 OVER CURRENT PROTECTION 55
5.5 TELETEXT DISPLAY 55
5.6 SOUND PROCESSING 56
5.6.1 ANALOGUE SOUND IF - INPUT SECTION 56
5.6.2 QUADRATURE MIXERS 56
5.6.3 PHASE AND AM DISCRIMINATION 56
5.6.4 NICAM DECODER 57
5.6.5 DSP SECTION 57
5.6.6 SOUND MODE SWITCHING 57
5.7 SOUND AMPLIFICATION 57
5.7.1 POWER AMPLIFIER 57
5.7.2 MODE SELECTION 57
5.8 VERTICAL DEFLECTION 58
5.8.1 FLYBACK VOLTAGE 58
5.8.2 PROTECTION 58
5.8.3 GUARD CIRCUIT 58
5.8.4 DAMPING RESISTOR 58