| 摘要 |
This invention is a digital still camera having a coded data quantity monitoring circuit (9). This monitoring circuit (9) detects the quantity of data of an image signal compressed by a JPEG compression circuit (7). When a CPU (10) judges that the quantity of data detected by the coded data quantity monitoring circuit (9) is equal to or more than a maximum coded data quantity S, first, an image pickup element (3) is caused to pick up an image of an object again and output a different image signal, and a quantization table to be used in a quantization circuit (21) is changed. Next, the different image data is compressed by being DCT-transformed by a DCT circuit (20), then quantized by the quantization circuit (21) and coded by a coding circuit (22). The compressed different image signal is recorded to a memory card (13). In this case, the different image signal is recorded into an area where an image signal has been recorded in advance on the memory card (13).
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