An imaging device has a photosensitive array, a vertical transfer CCD array, a horizontal transfer CCD, a drain region, drain gates, a drive circuit and a processing circuit. An electric charge accumulated in the photosensitive array is first transferred to the vertical transfer CCD array, and then transferred from the vertical transfer CCD array to the horizontal transfer CCD. The electric charge held in the horizontal transfer CCD is transferred to the drain region at a predetermined timing defined by to a slow motion ratio N. The slow motion operation can be changed independently of the frequencies of the CCD drive signals. Therefore, the power consumption is much reduced and a slow motion ratio can be obtained.

A color television camera has a semiconductor image sensor composed of sensor elements of the CCD type arranged in a raster. The charges produced in the sensor elements within an integration interval are read out as video signals. The image on the semiconductor image sensor is shifted in the horizontal direction by a fraction of a raster unit of measurement from one integration interval to the next integration interval in a cyclical fashion. An increase of the resolution in the vertical direction will then result by reading out the video signals from the semiconductor image sensor. The horizontal image shift is produced in the optical path between the objective lens of the image sensor by means of filter disk mounted so as to be bistable. The filter disk can thereby be flipped through a predetermined angle and back between integration intervals of the image sensor.

A color-reproducing contact image sensing (CORCIS) system that eliminates the use of multiple arrays of photodetectors with separate color filters and which permits the use of any of various signal-processing improvements such as voltage pickoff, transducer gain and correlated double sample and hold processing. The device operates by sequentially illuminating the colored object to be reproduced by primary color illumination means, with each illumination transferring in parallel the appropriate color response to a readout register for sequential readout. The sample and hold, and the parallel transfer operation, allow the CORCIS system to be able to read out signal while the detector array is integrating the next color signal, thus improving the sensitivity.

An image signal processing apparatus includes a vertical register for storing and transferring color signals obtained as image signals related to at least three primary colors, a horizontal register for receiving the color signals transferred from the vertical register and a transfer controller for succeedingly transferring a series of color signals for every color composed of a series of data or one and the same color for one line related to the three primary colors, to the horizontal register in every horizontal blanking period, and for successively transferring and outputting the series of color signals transferred to the horizontal register. As a result, the image signal processing apparatus is made of a small size at a reduced cost by simplifying the circuit configuration.

A Time Delay Integration technique is applied to an image sensor of this invention. A sensor part is constructed in such a way that diagonally-arranged photo-sensors are arranged periodically lengthwise and widthwise. The signal charge read from the photo-sensors of each line is transferred vertically to horizontal CCD shift registers. Each horizontal CCD shift register is provided on each line of the diagonally-arranged photo-sensors, and the horizontal CCD shift register outputs the signal charge to an A/D converter, which converts the signal charge into a digital signal. Thus, one A/D converter processes only a small amount of data, and the object can be scanned at high speed.