固体撮像技術　　スウィングＣＣＤイメージセンサー

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  • A Swing CCD Image Sensor
  • スウィング CCD イメージ センサー

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A resolution characteristic for a solid state image sensor is determined by the numbers of picture elements packed in a CCD chip. To improve the resolution, it is proposed to swing the CCD chip right and left in a horizontal direction, so that each photo-diode in the picture element occupies a new imaging spot, which is left without any picture signal if not swung.<BR>Thus, the “Swing CCD” produces a frame picture composed of a signal stored in one field time at one site and that stored in another field time at the new site. This is equivalent to an increase in numbers of picture elements in the horizontal direction, resulting in an enhancement in horizontal resolution by factors of two.<BR>An interline transfer CCD is swung synchronously at frame time frequencies with the aid of piezoelectric bimorph deflectors. Details on the swing DDC structure are reported. Also, an invented signal process method is reported which gives a necessary high resolution picture display without wide band signal processing circuits. Experimental results on black and white pictures are shown. An application for a single chip color camera is discussed.

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