Method and device for preventing power loss of memory card

Abstract

The invention discloses a method and device for preventing power failure of a memory card. The method includes a terminal continuously or intermittently sending data to the memory card; the memory card feeds back response data to the data sent by the terminal; and the terminal judges whether the memory card is in a working state according to the response data ; The terminal continuously supplies power to the working memory card. The device includes a terminal and a memory card built into the terminal, and the terminal includes a first data transceiving unit for sending data to the memory card and receiving response data fed back by the memory card, and for judging whether the memory card is in a working state according to the response data A judging unit and a power supply unit for continuously supplying power to the memory card in the working state; the memory card includes a storage module and a second data transceiving unit for receiving data sent by the terminal and feeding back response data to the terminal. Through the above technical solutions, the present invention provides a more complete method and device for preventing power failure of a memory card.

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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