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Radiation imaging monitor control improvement

  • US 4,930,144 A
  • Filed: 05/25/1988
  • Issued: 05/29/1990
  • Est. Priority Date: 11/25/1986
  • Status: Expired due to Fees
First Claim
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1. A radiation imaging system comprising:

  • (a) a source of penetrative radiation;

    (b) acquisition means for detecting patterns of radiation from said source and for producing a video output representing said patterns in accordance with one of a set of selectable acquisition modes;

    (c) control means for operating said acquisition means in accordance with a selected one among said set of operating modes;

    (d) a monitor including input circuitry coupled to receive said video output and means including a cathode ray tube and an electron gun to produce in raster format a visual image corresponding to said radiation patterns represented by said video output, and means for adjusting the aspect ratio of said visual image;

    (e) circuit means automatically operable on said monitor for adjusting the aspect ratio of said image acceptable by said monitor as a function of the format of said operating mode which is selected by said control means, and(f) circuit means for adjusting the brightness of said image as a function of the aspect ratio of said image produced by said monitor.

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