Abstract: A processing apparatus for video and or audio signals comprises a first module having a controller coupled to a signal processor. The signal processor has a signal processing characteristic selected from a plurality signal processing characteristics stored in a non-volatile memory. A second module is coupled to the first module and has a specific input output signal coupling characteristic. The controller determines the input output signal coupling characteristic of the second module and in accordance therewith selects from the plurality signal processing characteristics stored in said non-volatile memory a signal processing characteristic for the signal processor.

Abstract: A modular frame assembly and modules are provided. The modular frame assembly includes a motherboard, module connectors and an opening in the motherboard for allowing direct connection of first and second modules. The first modules have plugs that extend through the plane of the motherboard, allowing the size of the opening to be minimized. The second modules have a wide external connector portion that allows for high density interconnection on the rear of the frame. Each of the modules may be provided with a plurality of connectors.