Composite Sync

Component video requires an extra synchronization signal to be sent along with the video. Component video sync signals can be sent several different ways:Separate syncUses separate wires for horizontal and vertical synchronization. When used in RGB connections, five separate signals are sent (Red, Green, Blue, Horz. Sync, Vert. Sync).Composite syncCombines horizontal and vertical synchronization onto one pair of wires. When used in RGB connections, four separate signals are sent (Red, Green, Blue, Sync).Sync-on-greenCombines composite sync with the green signal in RGB. Only three signals are sent (Red, Green with Sync, Blue). This synchronization system is used in - among other applications - many systems by Silicon Graphics and Sun Microsystems through a DB13W3 connector.Sync-on-luminanceSimilar to sync-on-green, but combines sync with the luminance signal (Y) of a color system such as YPbPr. This is the synchronization system normally used in home theater systems.
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