post-edit
2.Relatively-cheap, high-performance, broadcast-acceptable digital cameras and related digital edit and effects post-production systems are now available to more and more creative young programme-makers, who are consequently able, therefore, to pay the membership fee for entrance into what used to be a very exclusive Members Club.
3.So the design of this type of converter is mixed signal design. Since this type of converter has little requirement for the digital parts and its digital structure is relative simple, the whole design approach of the converter is the same with the design flow of the analog circuit that is to draw schematics and layout manually, edit the DRC LVS files to verify the layout and check its performance by means of post-simulation.

