| 摘要 |
PURPOSE:To write the notice area of high image resolution and the whole screen of low image resolution to a picture memory having small capacity of a single picture processor, by providing a thinning degree setting circuit which produces a fixed thinning degree and a thinning circuit which thins the image pickup data sampling clocks in response to said thinning degree and sends those thinned clocks to a processing circuit. CONSTITUTION:The center point (notice point) X of a notice area X1 is set to an area signal producing circuit 2. The circuit 2 sends the distance information based on the point X to a thinning degree setting circuit 4. The circuit 4 set the thinning degree to a thinning circuit 3 in response to the distance from the point X. The circuit 3 thins the image pickup data sampling clocks (c) in response to the thinning degree and produces a write clock (d) to send it to a processing circuit 1. The circuit 1 writes the image pickup data (a) to a picture memory by the clock (d). In such a way, the whole screen shown by an area X5 is written to the picture memory with the image resolution corresponding to the distance from the point X.
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