Method, device and system for detecting moveable storage medium

Abstract

The embodiment of the invention discloses a method, a device and a system for detecting a moveable storage medium. The method comprises the following steps of: comparing an acquired moveable storage medium input level with a preset reference level and then outputting a driving level, wherein the input level is acquired by using the constructed moveable storage medium as a circuit of a load; and turning on a switch unit by using the driving level, outputting an indicating level for driving turning-on and turning-off of a decoding chip power supply by the switch unit so as to supply power to a decoding chip when the moveable storage medium is inserted into the decoding chip is detected. The problems that high power consumption is produced and the service life of the decoding chip is shortened because the decoding chip requires uninterrupted power supply in the prior art are solved, the operation of the decoding chip is not affected, and reliable read-in of the moveable storage medium is ensured.

Description

technical field [0001] The present invention relates to the technical field of removable storage medium detection, and more specifically, to a removable storage medium detection method, device and system. Background technique [0002] With the continuous advancement of science and technology, various smart terminals capable of display, human-computer interaction and networking have poured into people's lives. These smart terminals often require mobile storage media for data update or data download operations. [0003] Taking the touch screen intelligent terminal as an example, it uses the decoding chip to detect whether there is a removable storage medium connected or uses the DP detection device to realize identification by receiving the communication signal sent by the removable storage medium. [0004] However, the above-mentioned detection method for removable storage media has at least the following technical disadvantages: because the decoding chip needs to detect in r...

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned detection method for removable storage media has at least the following technical disadvantages: because the decoding chip needs to detect in real time whether it is connected to the removable storage medium, the decoding chip needs uninterrupted power supply, which leads to large power consumption and shortened life of the decoding chip. The problem is that the method of using the DP detection device needs the communication signal line to receive the communication signal, and there is a shortcoming that the growth of the PCB board trace of the intelligent terminal cannot guarantee the successful reading of the removable storage medium.

Images