Abstract: A still image memory device includes an imaging unit, a nonvolatile memory unit that includes a first memory area and a second memory area, and a control unit that controls the nonvolatile memory unit. The control unit includes a first processing unit that stores, in the first memory area, the image data output from the imaging unit; a second processing unit that, based on memory status of the first memory area, reads and compresses image data selected from a plurality of image data stored in the first memory area, stores compressed image data in the second memory area, and destroys the image data selected from the plurality of image data stored in the first memory area; and a third processing unit that, based on memory status of the second memory area, destroys compressed image data selected from a plurality of compressed image data stored in the second memory area.