| Compared with analog TV, digital TV has obvious advantages, and promotes realizing the complete televison broadcasting digitalization process. At the same time, overcoming some defects such as narrow angle of view and low brightness, LCD gets a rapid development. It also becomes very popular with the broadcasting kingdom, due to a lot of advantages, including low radiation, low energy consumption, small size and high definition picture quality.High definition LCD monitors have been mainly designed and developed in the research work, just aiming at the broadcast station or some other application situations which need high definition digital video processing or surveillance. Applying 10-bit signal processing technology, with a dual HD-SDI signal input interface and a HD-SDI signal output interface, the designed sample has the ability of receving uncompressed high speed date stream transmission in three standards of HD-SDI, SDI or DVB-ASI. For the compatibility for analog signal input, other interfaces are also designed, including YPbPr, RGB, S-Video and CVBS widely used for receving analog TV signals. In addition, different displays respectively applied to 8 kinds of professional marks, 4 kinds of security areas and sound level are designed. It is convenient for shooting, compiling broadcast televison programs. RS232 interfaces are supplied in the developed high definition LCD monitors, which can support software upgrading without dismantling the product.In the thesis around high definition LCD monitors receving HD-SDI stream, the background of project, the choice of scheme and the design for each parts and production are firstly introduced. And then, the treatment in details and the solutions of design problems are analyzed. At last, the development of whole system is summarized, with the advantages and deficiencies estimated objectively and the improvement in further. |
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