– 65 –Chapter 5 Basic Operations — DSK (Downstream key)DSK (Downstream key)Combine characters or other images with the background image of ME1PGM or ME2PGM output.To select ME1PGM or ME2PGM output, use the button on the top menu → [MAIN FRAME] → [DSK] → [Assign] in the [Config] column.(page 133)Selecting the DSK typeSet the key type on the Menu Panel AV-HS60C3.1 Select the button → [DSK1] to [DSK4] → [Setting] tab.2 Select an item in [Type] in the [DSK] column.f Select the method to generate key signals. The selection status is stored for each source.[Lum](luminance key/self key)Creates key signals from luminance components or luminance and chrome components of key fill signals.f Since the luminance key is operated as a self key, the key fill signals are used as the key source signals.The key signals do not change even when the key source signals are switched.[Linear](linear key)Creates key signals from luminance components of key source signals. It is used when the key source signal and key fillsignal are different.f Use source with a black background and white characters or shape to be combined by the key as the key sourcesignal. Source which is not black and white may not be combined clearly. Source with white background and blackcharacters can be used by inverting the keys with the key invert function.3 Select an item in [Lum Key] in the [DSK] column.[Chroma Off] Generates the key signals only from the luminance components.[Chroma On] Generates the key signals considering the chrome components in addition to the luminance components. This item is setwhen a low luminance component color is used for key signals such as when cutting blue characters.4 Select an item in [Clean Key] in the [DSK] column.[Off] Cuts key fill with a key signal.[On] Does not cut key fill with a key signal. The part of key fill not cut out with the key signal is superimposed on thebackground image.Selecting the source type1 Select the button → [DSK1] to [DSK4] → [Setting] tab.2 Select an item in [Source Type] in the [DSK] column.f Select the mode to link selection of key source signal with key fill selection.[Self Key] Uses the source selected in the key fill bus column as the key source signal.[External Key] Always uses an external key. The source signal for fill is set using [Fill] in the [DSK] column.Selecting the fill typeSelect the fill type.1 Select the button → [DSK1] to [DSK4] → [Setting] tab.2 Select an item in [Fill] in the [DSK] column.[Bus] Uses the bus signal for the key fill signal.[Matte] Uses the internal fill matte for the key fill signal. The color set in the [Fill Matte] column is used for the fill matte color.Setting the matte colorSet the fill matte color.1 Select the button → [DSK1] to [DSK4] → [Setting] tab.2 Adjust the color.f Set [Hue], [Sat], [Lum], or [Color Palette] in the [Fill Matte] column.Selecting the DSK sourceFor details on selecting DSK sources, refer to “Selecting the key source” (page 52).
