Video signal processing apparatus and video signal processing method

A video signal processing apparatus comprising:

• a plurality of input sections to each of which a video signal outputted from an imaging apparatus whose operation is controllable or a video signal outputted from an apparatus whose operation is not controllable;
• an input selector selecting a video signal representing a primary output or a standby output and/or a video signal inputted from any of the controllable imaging apparatus among the plurality of video signals inputted through the plurality of input sections;
• a screen producer executing processing for producing a plurality of areas by dividing a screen into a plurality of portions in which the video signals selected by the input selector are displayed, the screen producer producing a first color frame for the area among the areas in which the video signal selected by the input selector as the video signal representing the primary output is displayed, producing a second color frame for the area in which the video signal selected by the input selector as the video signal representing the standby output is displayed, and producing a third color identifier for the area in which the video signal inputted from the controllable imaging apparatus is displayed, the third color different from the first and second colors;
• an output section outputting the video signals and the frames the identifier processed in the screen producer to a display device that displays the screen formed of the plurality of divided areas;
• an operation input unit specifying the video signal selected by the input selector;
• and
• a control section producing a control signal based on a selection operation performed on the operation input unit,
• wherein the processes in the input selector and the screen producer are carried out based on the control signal produced by the control section,
• wherein the operation input unit includes primary output selection buttons for selecting the video signal representing the primary output, standby output selection buttons for selecting the video signal representing the standby output, and camera selection buttons for selecting the video signal inputted from the controllable imaging apparatus, and
• the control section produces a control signal for controlling the input selector and the screen producer based on information contained in a table that relates the following parameters to one another in a one-to-one relationship:
• logical numbers assigned to the buttons in such a way that the corresponding ones of the three types of buttons have the same number, input port numbers assigned to the plurality of input sections, camera numbers assigned to the controllable imaging apparatus, and display position numbers assigned to the plurality of areas.