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US 6,249,643 B1Granted
Image sensing apparatus having photoelectric elements in a two-dimensional offset arrangement
AssigneeCanon Kabushiki Kaisha
InventorToshihiko Mimura
Life of this patent
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Abstract
In a recording and reproducing apparatus having an image sensor which has photoelectric conversion elements arranged in a two-dimensionally offset manner and a signal processing part which is arranged to include a two-dimensional filter and a frame memory, a circuit is arranged to enable the two-dimensional filter which forms a luminance signal in recording to be used also for reproduction; and a sampling action for a reproducing operation is arranged to be performed in the form of sub-sampling for every field.
Claims6
An image sensing apparatus, comprising:
- (a) image sensing means including a plurality of photo-electric converting elements for converting image light coming from an object to be photographed into an electric image signal, said photo-electric converting elements being arranged in two-dimensional offset sub-sampling structure arrangement;
- (b) common memory means for storing an output of said image sensing means;
- (c) two dimensional low-pass filter means for interpolating the image signal stored in common memory means in a vertical direction and in a horizontal direction and for producing an interpolated image signal;
- (d) recording or reproducing means for recording said interpolated image signal produced by said two dimensional low-pass filter means on a recording medium or reproducing a recorded interpolated image signal from said recording medium;
- (e) offset-subsampling means for offset-subsampling the reproduced interpolated image signal reproduced by said recording or reproducing means to thin out said interpolated image signal;
- and
- (f) switch means for selectively supplying the output of said image sensing means and an output of said offset-subsampling means to said common memory means.
4 more elements
Dependencies are inferred from the claim text.