| 摘要 |
Data is recorded on a data recording medium as a code that can be optically read by using a manual scanning process. Images to be recorded on the periphery of the code include codes, images, texts, etc., and they respectively have attributes such as the shape, color and density. Then, depending on these attributes, the images are classified into those which cause adverse effects when read together with the code and those which do not cause any adverse effects, and the former images are referred to as interference images, and the latter images are referred to as non-interference image. Here, upon recording the above-mentioned code, on the periphery of the code is placed a non-interference area from which any of interference images having attributes (shape, color, density) that cause adverse effects upon reading the code are not allowed to exist. Any image other than the interference images, that is, any non-interference image, can be recorded within the non-interference area.
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