| 摘要 |
PROBLEM TO BE SOLVED: To reduce the scale of circuit and to relieve the load of software processing in the case of converting the number of horizontal and vertical pixels of an image. SOLUTION: A memory controller 5 converts the number of pixels of a photographed image of a CCD 2 and applies joint photographic experts group JPEG compression to the image, a DRAM 9 stores it or an external storage medium 11 records the image. The DRAM 9 stores JPEG data reproduced from the external storage medium 11, applies JPEG expansion to the data and an LCD 8 displays the expanded image via the memory controller 5 and a buffer memory 6. In the case of receiving the photographed image, the memory controller 5 uses an arithmetic circuit of a horizontal pixel number conversion section 51 to conduct horizontal pixel number conversion and the vertical line number of the image is converted by a software stored in a CPU 12. A CCD 2 generates a photographing output whose line number is interleaved in the monitor use E to E mode. The switching of the mode of the CCD 2 is used for conversion of pixel numbers. In the case of confirmation reproduction and of the reproduction, the number of lines is converted by interleaving read addresses from the DRAM 9.
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