Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Parameter related to the reproduction or fidelity of a...
Patent
1993-10-12
1996-07-16
Wieder, Kenneth A.
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Parameter related to the reproduction or fidelity of a...
378 982, G01R 2926
Patent
active
055370470
ABSTRACT:
A noise analyzer apparatus for a video signal produced by an X-ray imaging system corresponding to an image generates, in response to vertical and horizontal sync pulses, a two-level gating signal which is at a predetermined level solely during the times that intensity information contained in the video signal corresponds to pixels in an adjustably positionable window area of the image. A gated noise measuring circuit responsive to intensity information contained in the video signal and to the gating signal forms a signal which is a measure of a noise content solely within the window area of the image. A signal combiner combines the video signal and a signal derived from the gating signal to produce an augmented video signal containing in its intensity information a marker indicating the location of the window area. The augmented video signal is fed to a display from which the operator may observe the repositioning of the window area in the image as vertical and horizontal time delays introduced in the noise analyzer are adjusted.
REFERENCES:
patent: 2595646 (1952-05-01), Doba et al.
patent: 4710761 (1987-12-01), Kapur et al.
patent: 4894851 (1990-01-01), Kroon et al.
patent: 5067142 (1991-11-01), Gall et al.
patent: 5144430 (1992-09-01), Boelart
patent: 5202671 (1993-04-01), Aranda et al.
Boelart Eduardo I.
Grace Manuel
Brown Glenn W.
Philips Electronics North America Corporation
Slobod Jack D.
Wieder Kenneth A.
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