A radio frequency driver amplifier system and method that provides linear in decibel gain control is provided. Each breaker module can include, in parallel, a mechanical switching assembly, a semiconductor switching assembly and an arrester assembly. The downward force is accurately measured using an electronic force sensor such as a strain gauge, force sensitive resistor, or any other suitable type of force sensor. Image detail layers are transmitted as an inverse function of image displacement speed and as a direct function of image magnification. In a medium that recordsplays back data including video data and control information, the control information includes information for accessing a specific portion of the video data.