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Method and apparatus for performing access control between host device and memory device

A technology of memory device and master device, which is applied in the direction of memory system, memory address/allocation/relocation, input/output process of data processing, etc.

Active Publication Date: 2020-05-15
SILICON MOTION INC (CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the related art does not provide a proper solution to implement the related control mechanism in the host device, a novel method and related architecture are needed to solve these problems with no side effects or less side effects

Method used

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  • Method and apparatus for performing access control between host device and memory device
  • Method and apparatus for performing access control between host device and memory device
  • Method and apparatus for performing access control between host device and memory device

Examples

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Embodiment Construction

[0057] At least one embodiment of the invention discloses a method and device for access control between a host device and a memory device. The memory device (such as a memory card conforming to a specific communication standard, or a flash memory device) may include a memory controller to control the operation of the memory device, and may additionally include a non-volatile memory (non-volatile memory, NV memory) such as a flash memory is used to store data, wherein the non-volatile memory may include one or more non-volatile memory components (eg, one or more flash dies, or one or more flash chips). In addition, a bridge device (such as a Universal Serial Bus (hereinafter referred to as USB) bridge device) can be coupled between the host device (such as a multifunctional mobile phone with a USB port, a tablet computer, etc.) and the memory devices (such as the memory card or the flash memory device). The bridge device may include: a bridge controller for controlling the op...

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Abstract

A method for performing access control between a host device and a memory device, an associated bridge device and a bridge controller thereof are provided, where the method is applicable to the bridgedevice for coupling the memory device to the host device. The method may include: receiving a first test command; returning failure information; receiving a request command; returning device-relatedinformation; receiving a second test command; returning pass information; receiving a capacity-related command; reporting a reported logical address LA count of the memory device and a reported sectorsize of the memory device; and performing bi-directional mapping between a memory device side LA format at the memory device side corresponding to the memory device and a host device side LA format at the host device side corresponding to the host device during access operation that the host device performs. According to the invention, proper operation of the memory device under various conditions can be ensured, and the problems of unsuccessful formatting, data damage / loss and the like in related technologies are avoided.

Description

technical field [0001] The present invention relates to memory control, especially a method and device (such as a bridge device and its bridge controller) for access control between a host device and a memory device (such as a memory card). Background technique [0002] Memory devices including a flash memory can be used to store data (such as user data), and the management of access to the flash memory is quite complicated. For example, the memory device can be a memory card. When a host device (such as a multifunctional mobile phone with a Universal Serial Bus (USB) port) is connected (link) to the memory device, it may be caused by a program running on the host device Errors occur due to incorrect design of one or more program modules, such as adapted versions of an open source software solution. In particular, the adjusted version may be adjusted from a general version with a bug, and most manufacturers of such master devices may not be aware of the bug or may not be a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/02G06F12/10G06F13/40
CPCG06F12/0246G06F12/10G06F13/404G06F3/0679G06F13/1668G06F3/064G06F3/0661G06F3/0607G06F2213/0042Y02D10/00G06F3/0659G06F3/0622
Inventor 黄国荣黄兴郎林宏晔
Owner SILICON MOTION INC (CN)
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