Abstract: An inductor current emulation circuit for use with a switching converter in which regulating the output voltage includes comparing an output which varies with the difference between the output voltage and a reference voltage with a ‘ramp’ signal which emulates the current in the output inductor. A current sensing circuit produces an output which varies with the current in the switching element that is turned on during the ‘off’ time, an emulated current generator circuit produces the ‘ramp’ signal during both ‘off’ and ‘on’ times, a comparator circuit compares the ‘ramp’ signal with at least one threshold voltage which varies with the sensed current and toggles an output when the ‘ramp’ exceeds the thresholds, and a feedback circuit produces an output which adjusts the ‘ramp’ signal each time the comparator circuit output toggles until the ‘ramp’ signal no longer exceeds the threshold voltages.

Abstract: Objects are detected in real-time at full VGA 30 frame per second resolution. A preprocessor performs run-length encoding (RLE) and generates a summed area table (SAT) of an image. The RLE and SAT are used to identify candidate objects and to iteratively refine their boundaries. A histogram of gradients (HoG) and support vector machine (SVM) then reliably classify the object. The method may be part of an advanced driver assistance system (ADAS).