Device for mixing video signals has mixing stage groups, whereby each 2 video signals are added after multiplying by control signals, changeover switches, all mixer stages connected to device outputs

摘要

The device has several groups of at least one mixing stage, first group stage inputs connected to device inputs, at least one input of at least one second group stage connected via a changeover switch(s) to device inputs or first group mixer stage outputs, at least one further group stage input connected via changeover switches to device inputs or further group stage outputs and the outputs of all mixer stages connected to device outputs. The device has several mixing stages, whereby each two video signals are added after multiplication by control signals, several groups consisting of at least one mixing stage with the inputs of the at least one mixing stage of a first group connected to the inputs of the device, the at least one input of the at least one stage of a second group connected via at least one changeover switch to device inputs or to first group mixer stage outputs, at least one input of at least one further group connected via changeover switches to device inputs or further group mixer stage outputs and the outputs of the mixer stages of all groups connected to the device outputs.