Circuit for producing a video signal representing a...

Details Circuit for producing a video signal representing a... Circuit for producing a video signal representing a...

G - Physics

01

R

375/33

G01R 13/20 (2006.01) G09G 1/16 (2006.01)

Patent

CA 1248649

A Circuit for Producing a Video Signal Representing a Measuring Signal A B S T R A C T A circuit for producing a video signal representing a measuring signal is already known, said circuit comprising a video storage circuit, a horizontal address control circuit for controlling said video storage circuit, a circuit for producing a vertical signal and a comparator circuit which, when the vertical signal essentially cor- responds to a signal derived from the video storage cir- cuit, produces a comparison signal representative of a point of the measuring signal in the instantaneously produced line of the video signal. For the purpose of improving the measuring signal represen- tation quality, the invention provides the feature that a video D/A converter and a low-pass filter circuit are inserted between the video storage circuit and the com- parator circuit.

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