Abstract: A system for wire-free arming of a bomb releasably carried by an aircraft mb rack includes an emitter circuit mounted on the bomb rack, and an electrical power generator circuit, a detector circuit, and an arming circuit mounted on the bomb. The emitter circuit on the bomb rack is activated when the aircraft pilot releases the bomb. The emitter circuit emits a predetermined transmission of electromagnetic energy, such as an infrared pulse train or a pulsed magnetic field, in the direction of the bomb through the airspace between the aircraft bomb rack and bomb. The electrical power generator circuit on the bomb is activated by release of the bomb for generating electrical power as the released bomb separates from the aircraft bomb rack and producing an output power signal after release of the bomb from the bomb rack.

Abstract: Video signal monitoring apparatus searches a video signal for the existence f an imposed indicator signal having predetermined characteristics. The indicator signal is a series of pulses exceeding a predetermined brightness level and having a duration falling within a predetermined range of durations imposed one pulse per video line in a predetermined number of consecutive video lines in a video frame. A stripper circuit extracts signals indicative of the start of each video line and each video frame as well as pulses in each video line having a brightness level exceeding the predetermined brightness level which indicator pulses must exceed from the video signal as the video signal is received. The duration of each pulse extracted from a video line is determined and a counter is incremented for each line in which a pulse is found to exist having a duration falling within the range of durations established for indicator pulses.