Patent ID: 7920177

Claim:
An imaging apparatus for taking images and recording them as digital data, comprising: a memory that stores image data and having real address space; an image processing circuit that has a specified image data processing function, and writes and/or reads data in specified data unit in the memory by using virtual address space; a memory management unit that performs virtual memory control for managing the address of the memory by relating the real address space to the virtual address space, and a CPU that controls the image processing circuit, the memory management unit including: an interface circuit that converts virtual address specified by the image processing circuit into real address, and a correspondence registration circuit that has corresponding information for managing the correspondence between a virtual address unit region and a real address unit region, and sends the information about the real address unit region corresponding to the virtual address unit region in response to inquiry from the interface circuit, the virtual address unit region being a region of specified data unit in the virtual address space, the real address unit region being a region of specified data unit in the real address space, wherein when the image processing circuit completes data read operation from the memory in specified data unit, the correspondence registration circuit deletes the correspondence between virtual address unit region and real address unit region for the read data in the corresponding information.