Bildsensor und elektronische Stehbildkamera

摘要

An electronic still camera wherein an image compression circuit can be simplified is disclosed. The electronic still camera includes a lens system, a shutter, an image sensor and a processing circuit. A video signal for one frame outputted from the processing circuit in response to a shutter operation is written into a memory. A video signal read out from the memory is compressed in accordance with the JPEG system by an image compression circuit and then written into a memory card. The image sensor is constituted from an image pickup section and a product sum calculation section. A CMD image sensor capable of non-destructively reading out a picture signal is used as the image pickup section. The product sum calculation section performs DCT processing required for compression processing of the JPEG system. Since a picked up image signal processed by DCT processing is obtained from the image sensor, DCT processing of the image compression circuit is unnecessary. This can simplify the construction of the circuit. <IMAGE>