The technology to get a larger size of the image by using a smaller one is what we called Digital Image Magnification.

从一幅尺寸较小的图像获得尺寸较大的新图像的数字图像处理技术，称为数字图像放大。

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Digital zoom is different, and refers to the digital magnification of an image.

数码变焦是不同的，指的是数码放大图像。

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Additionally, the RX1 camera features By Pixel Super Resolution digital zoom technology, which allows for magnification of image size without sacrificing pixel count.

ENGADGET: Sony's Cyber-shot RX1 compact camera packs a full-frame sensor, 'fits in your palm' (hands-on)