Dutch term (edited): veegpuls

A sweep is an electronic timebase waveform starting at "0" voltage level, for example, and rising linearly to "1" level (called ramping), followed by a sharp drop back to "0" level (called a flyback). It resembles a sawtooth, and is often referred to as such. It can be used to trigger all kinds of electronic events, and is certainly not limited to radars.

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A two-dimensional visual display apparatus for presenting color television information received from a composite television signal. In place of a conventional cathode-ray tube, the apparatus has a display panel comprised of a plurality of closely spaced triads of light-emitting diodes arranged in a plurality of closely spaced horizontal rows. Each triad consists of three closely spaced light-emitting diodes, each having an electroluminescent output of a different primary color. Conventional circuitry is used to detect and convert a composite color television signal into its luminance, chrominance, and scanning components. A grid sweep unit is provided to successively apply the amplified video signals across the rows of diode triads causing them to be actuated in accordance with the signals applied thereto to provide the visual display or picture. In the disclosed embodiment, the horizontal and vertical sweep units consist of a pyramid of bistable switches whose sequential outputs are applied to logic circuits operatively connected to the diode triads such that the video signals are caused to successively sweep the rows of triads.