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US 5,510,835 AGranted
Video camera having a solid-type image sensor
AssigneeHitachi, Ltd.
InventorsAkihito Nishizawa, Ryuji Nishimura, Hiroyasu Ohtsubo
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AssigneeHitachi, Ltd.
InventorsAkihito Nishizawa, Ryuji Nishimura, Hiroyasu Ohtsubo
Estimating the term…
Output signals of a solid state image sensor 1 are processed in a signal processing circuit 3 and then supplied as brightness signals to a variable gain circuit 4, and gain of the circuit is varied for each color separation filter provided in the solid state image sensor 1, and in the case of achromatic objects, signal amounts for each color separation filter are made equal and moire is suppressed. In such a video camera, a noise reducer circuit 5 is provided and output signals of the variable gain circuit 4 are supplied to the noise reducer circuit 5 and adding processing is carried out during a plurality of horizontal scanning periods neighboring vertically thereby level variation (line pair) of the brightness signals for each horizontal scanning period is suppressed. A vertical resolution correction circuit 6 generates a vertical resolution correction signal from output signals of the signal processing circuit 3 there by degradation of the vertical resolution of the brightness signals is corrected.
A color video camera which is provided with a plurality of color separation filters being different in spectral sensitivity, and with an image pickup section mixing and outputting respective color signals generated from said color separation filters in different combinations for each horizontal scanning, said color video camera comprising:
A color video camera which is provided with a plurality of color separation filters being different in spectral sensitivity, and with an image pickup section mixing and outputting respective color signals generated from said color separation filters in different combinations for each horizontal scanning, said color video camera comprising:
A color video camera which is provided with a plurality of color separation filters being different in spectral sensitivity, and with an image pickup section mixing and outputting respective color signals generated from said color separation, filters in different combinations for each horizontal scanning, said color video camera comprising:
A color video camera which is provided with a plurality of color separation filters being different in spectral sensitivity, and with an image pickup section mixing and outputting respective composite signals generated from said separation filters in different combinations for each horizontal scanning, said color video camera comprising:
A color video camera which is provided with a plurality of color separation filters being different in spectral sensitivity, and with an image pickup section mixing and outputting respective composite signals generated from said separation filters in different combinations for each horizontal scanning, said color video camera comprising:
Dependencies are inferred from the claim text.