Electron microscope with brightness/contrast indicator

Details Electron microscope with brightness/contrast indicator Electron microscope with brightness/contrast indicator

1979-01-10

1980-11-25

Richardson, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358168, 358169, 250311, 340782, H04N 514

Patent

active

042361788

ABSTRACT:
A series of LED elements is included in a scanning electron microscope in order to indicate the brightness and the contrast of a video signal to be recorded. The brightness is indicated by the position of an illuminating LED element, and the contrast is indicated by the number of alternately illuminating LED elements. The use of different colors for the LED elements provides an indication as to how far the signal to be detected may be intensified. The number of the centrally arranged LED elements of the same color preferably corresponds to the number of grey levels of a grey scale generator included in the circuit.

REFERENCES:
patent: 3886305 (1975-05-01), Yew et al.
patent: 3898642 (1975-08-01), Dorey et al.
patent: 3987392 (1976-10-01), Kugelmann et al.

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