Image forming apparatus and method of translating virtual memory address into physical memory address
AssigneeSamsung Electronics Co., Ltd.
InventorByoung-tae Cho
Life of this patent
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Abstract
An image forming apparatus includes a function unit to perform functions of the image forming apparatus, and a control unit to control the function unit to perform the functions of the image forming apparatus. The control unit includes a processor core to operate in a virtual memory address, a main memory to operate in a physical memory address and store data used in the functions of the image forming apparatus, and a plurality of input/output (I/O) logics to operate in the virtual memory address and control at least one of the functions performed by the image forming apparatus. Each of the plurality of I/O logics translates the virtual memory address into the physical memory address corresponding to the virtual memory address and accesses the main memory.
Claims8
A method of translating a virtual memory address into a physical memory address in an image forming apparatus, the method comprising:
- requesting an access of a main memory using a virtual memory address by an input/output (I/O) core which controls at least one of functions performed by the image forming apparatus with image data stored in the main memory;
- translating the virtual memory address requested by the I/O core into a physical memory address using a translation look-aside buffer (TLB) and by predicting the virtual memory address to be requested next by the function core according to an access pattern for the image data of the image forming apparatus;
- and
- performing an access corresponding to the image data of the main memory using a translated physical memory address.
Dependencies are inferred from the claim text.