Power down prevention method and device for memory card

Abstract

The invention discloses a power down prevention method and device for a memory card. The method comprises the steps of enabling a terminal to continuously or intermittently send data to the memory card; enabling the memory card to feed back response data for the data sent by the terminal; enabling the terminal to judge whether the memory card is in a working state according to the response data; and enabling the terminal to continuously supply power to the memory card in the working state. The device comprises the terminal and the memory card arranged in the terminal. The terminal comprises a first data transceiving unit, a judging unit and a power supply unit, wherein the first data transceiving unit is used for sending the data to the memory card and receiving the response data fed back through the memory card; the judging unit is used for judging whether the memory card is in the working state according to the response data; and the power supply unit is used for continuously supplying power to the memory card in the working state. The memory card comprises a memory module and a second data transceiving unit for receiving the data sent by the terminal and feeding the response data back to the terminal. According to the technical scheme, the power down prevention method and device for the memory card are improved.

Description

technical field [0001] The invention relates to the field of memory cards, in particular to a method and device for preventing power failure of a memory card. Background technique [0002] Terminals such as mobile phones, PADs, digital cameras, and audio players are more and more widely used. The storage space of the terminal itself is limited. In order to expand the storage space, memory cards such as SD, CF, and TF are usually installed in the terminal. Taking mobile phones as an example, When the phone is in standby mode, in order to save power, it usually runs necessary programs in a low-power mode and closes other unnecessary programs, such as the built-in memory card. At this time, the built-in memory card is in a power-off state, and the payment function of the memory card cannot be used. Normal application, causing inconvenience to the user's payment application. Currently, there are two ways to solve the memory card power-off problem: [0003] First, re-customize ...

AI Technical Summary

Problems solved by technology

[0003] First, re-customize the power management scheme of the terminal to ensure that the terminal supplies power to the memory card continuously at any time. This method leads to high power consumption of the terminal and greatly shortens the battery life of the terminal. In addition, it may increase the production cost of the terminal

[0004] Second, when the terminal is in a dormant state, the memory card is manually awakened by the user. For example, when the mobile phone is in standby state, the user manually lights up the screen of the mobile phone to wake up the memory card. Large, and requires manual operation by the user, not smart enough

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