Abstract: A video imaging device coupled to a host computer by a communication line over which control data is transmitted, to one or more sources of video information, and to a monitor by a video line over which video signals based upon the video information and control data are transmitted, includes a converting unit for converting the video information into the video signals for transmittal to the monitor. A receiver receives the control data transmitted over the communication line. The control data includes condition data and associated instruction data with at least some of the instruction data being adapted to alter at least some of the condition data upon execution of the associated instruction data. Stored condition data may be selected in response to user generated event data and display of the video signals on the monitor is manipulated by execution of the instruction data associated with the selected condition data.