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Storage card electricity-saving method and its device

A memory card and power supply technology, which is applied in the field of memory cards, can solve the problems that SOC cannot directly apply memory cards, and does not provide power management register description and address space, etc.

Inactive Publication Date: 2009-05-20
POTEVIO INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The disadvantage of this prior art is that the power-saving method of SOC is only aimed at its field; and the general standard of memory card does not provide the corresponding description and address space of the power management register, and the protocol of the memory card is based on the communication of the response mechanism protocol, so the power saving method of the existing SOC cannot be directly applied to the memory card field

Method used

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  • Storage card electricity-saving method and its device
  • Storage card electricity-saving method and its device
  • Storage card electricity-saving method and its device

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Embodiment Construction

[0050] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0051] The present invention will learn from the existing SOC power management method, and manage the clock and power supply of each module in the memory card and the external clock and power supply of the memory card through an extended communication protocol command of the memory card. Therefore, the following tasks need to be performed: First, set the corresponding flag in the feature register of the memory card, so that the data access device, such as a card reader, can determine whether the memory card supports the power-saving mode management method provided by the present invention; The second is to set the corresponding power-saving management command in the existing communication protocol, so that the data access device can manage the internal and external...

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Abstract

This invention offers a kind of power save method for the storage card basing on the communicating module and the device which can realize the power save for the storage card effectively. This invention manages the clock of every module in the storage card and the external clock of storage card and the power by the expansion communicating agreement order of the storage card also it can resolve the problem of leakage better for the storage card when it is not work.

Description

Technical field [0001] The invention relates to the field of memory cards, in particular to a method and device for saving electricity of a memory card based on a communication mode. Background technique [0002] Memory cards are mostly used in electronic mobile terminal devices, and the electronic mobile terminal devices in this application environment are very sensitive to power consumption during working and standby states. [0003] In the prior art, for SD / MMC memory cards, the method to solve the power saving problem is: when the data access device does not operate the memory card, the data access device can turn off the external clock of the memory card to reduce the storage capacity. The power consumption of the card. [0004] The disadvantage of this prior art technique is poor operational flexibility, because if the memory card is to be operated to save power, the data access device needs to turn off the external clock of the memory card, which causes the memory card to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/32
Inventor 曹会扬
Owner POTEVIO INFORMATION TECH CO LTD