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English Digital Signal Processing Circuit in HD Monitor using Synchronization Signal Optimization  

천성렬 (에이엔디 테크놀로지 제품연구소)
김익환 (LG전자 DND사업부 DTV연구실)
이호근 (경북대학교 전자전기컴퓨터학부)
하영호 (경북대학교 전자전기컴퓨터학부)
Abstract
Start The current paper proposes an improved HD(High Definition) monitor that can support a signal input with various resolutions. Due to the inadequate performance of the built-in digital PLL(Phase-locked Loop) of an ADC(Analog to Digital Converter) and poor tolerance of ADC ICs, there are problems in the stable processing of synchronization signals with various input signals. Accordingly, the proposed synchronization signal optimization technique regenerates the horizontal synchronization signal in the vertical blanking interval based on the regularity of the synchronization signal, i.e. the timing of the falling edge signal remains constant, thereby solving the above problem and minimizing the interference of the system. As a result, the proposed system can stabilize various synchronization signals with different resolution modes.
Keywords
DTV; synchronization; signal processing; optimization;
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