To provide sub-meter accuracy in a local positioning system, ranging signals with a high modulation rate of code, such as 30 MHz, or more are transmitted. Permanently attached index print labels incorporating these and other features are provided for digital still image storage devices are also provided. The controller generates the output clock signal from an input clock signal, and carries out sampling of input data to produce display data for a horizontal line of the display panel. The safety of a turbocharger in operation is increased by the invention.