Data accessing method and data accessing system capable of providing high data accessing performance and low memory utilization

A data accessing system comprising:

• a first memory comprising a plurality of memory pages and configured to save data;
• a receiver configured to receive input data and write the input data to the first memory;
• a transmitter configured to read output data from the first memory;
• and
• a processor coupled to the first memory, the receiver, and the transmitter and configured to control the first memory, the receiver, and the transmitter;
• wherein the processor acquires a usage order value of each memory page of the plurality of memory pages in the first memory, the processor acquires a first usage order value having a highest priority from a plurality of usage order values each corresponding to each of the plurality of memory pages in the first memory, the transmitter and the receiver access data through accessing a first memory page of the plurality of memory pages of the first memory having the first usage order value, the processor updates the first memory after the first memory page of the plurality of memory pages of the first memory having the first usage order value is used, the processor acquires a second usage order value having a highest priority from remaining memory pages of the plurality of memory pages of the first memory following usage of the first memory page, the transmitter and the receiver access data through a second memory page of the first memory having the second usage order value, and the plurality of memory pages are two-dimensional memory pages.