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Demand paging method and method for inputting related page information into page

A technology for requesting paging and paging, which is applied in the direction of memory address/allocation/relocation, etc., and can solve problems such as SDRAM area reduction

Inactive Publication Date: 2008-04-30
LG ELECTRONIC (HUIZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, in this case, the user-usable SDRAM area will be reduced, because SDRAM is roughly divided into two areas--user-usable area and request paging memory area, that is, if the request is increased to improve performance If the paging area is used, then as the request paging area increases, the SDRAM area available to the user will decrease

Method used

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  • Demand paging method and method for inputting related page information into page
  • Demand paging method and method for inputting related page information into page
  • Demand paging method and method for inputting related page information into page

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Embodiment Construction

[0021] The present invention will be described in more detail below with reference to the accompanying drawings.

[0022] figure 1 It is a structural schematic diagram of a "NAND" flash memory according to an embodiment of the present invention.

[0023] The request paging method proposed by the present invention refers to a method for calculating relevance when using a general request paging method. Store this association information in the "NAND" flash memory spare area, even if the power is turned off, it can still be preserved. For example, a common NAND flash memory has a spare area outside the main data area. The spare area is relatively small in size and is usually used to store error correction code (hereinafter referred to as ECC) related information.

[0024] For example, if the main data area is 512 bytes and the spare area is 16 bytes, then 3 bytes of ECC information are stored in the spare area. Although the byte size of the ECC information stored according to ...

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Abstract

The invention relates to a method that personal mobile terminal demands paging, which comprises: (a), the central processor checks the data of flash memory and demands paging; (b), storing the relative page from the flash memory to the data memory; (c), checking the page number stored in the relative page and storing the page in the data memory.

Description

technical field [0001] The invention relates to a personal mobile terminal request page scheduling method and a method for inputting relevant page information into the page. In particular, when the PDA in the personal mobile terminal uses the request paging method, in order to improve the performance of the request paging, a method for improving the performance of the request paging by utilizing the "and-not" flash memory spare area of ​​the personal mobile terminal. Background technique [0002] The memory used for PDA can be roughly divided into synchronous dynamic memory (SDRAM) and flash memory. Among them, the synchronous dynamic memory refers to a space for a program operated by a user, and the flash memory refers to a space in which all images are stored. [0003] Flash memory is divided into two types: NOR flash and NAND flash. Although NOR flash is expensive, it can be executed in the chip (ExecuteIn Place: XIP). NAND flash, while cheap, suffers from reduced perfo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/02
Inventor 金泰宽
Owner LG ELECTRONIC (HUIZHOU) CO LTD
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