OPTICAL SCANNING DEVICE

PURPOSE:To always obtain excellent picture by storing in advance a shading waveform specific to the title device and applying shading correction depending on the value. CONSTITUTION:When a switch SW is thrown to the position (b), a correction voltage in response to the shading quantity of a shading...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	SHIGETA KUNIKAZU
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	PURPOSE:To always obtain excellent picture by storing in advance a shading waveform specific to the title device and applying shading correction depending on the value. CONSTITUTION:When a switch SW is thrown to the position (b), a correction voltage in response to the shading quantity of a shading pattern stored in a shading storage section 5 by means of a shading pattern selection section 7 is outputted from a D/A converter 6, then the gain of an amplifier 2 is controlled resulting in obtaining the waveform without shading. In seeking the optimum shading pattern, the switch SW is thrown to the position (a). In this case, the gain of the amplifier 2 is fixed to n-time, a reference voltage of the A/D converter 4 is fixed and an envelope waveform in the output waveform of a photoelectric conversion section is given to the A/D converter, then the shading waveform of the device is observed.