Controllable CCID (Charge Coupled Imaging Device) card reader and working method thereof

Abstract

The invention provides a controllable CCID (Charge Coupled Imaging Device) card reader and a working method thereof, relating to the field of electronic product equipment. The working method comprises the steps of: receiving information released by a host, judging the types of operation instructions included in the information; carrying out corresponding operations according to the types of the operation instructions by the following specific steps of: if the operation instructions are normal instructions, forwarding data information to a card, waiting for receiving response information of execution success returned by the card; if the operation instructions are special operation instructions, carrying out corresponding special operations, and generating false response information of execution success; if the operation instructions are placeholder instructions, generating false response information of execution success; and returning the response information to the host. The controllable CCID card reader can be connected with the host through a CCID interface without an external power supply, is applicable to all existing software, so that the production and use cost is reduced; and when the power fail of the card happens, the controllable CCID card reader can interact with the host normally, so that the use of the CCID card reader is safe and convenient.

Description

technical field [0001] The invention relates to the field of electronic product equipment, in particular to a controllable CCID card reader and a working method thereof. Background technique [0002] With the development of science and technology, various electronic products such as mobile phones, digital cameras, MP3, MP4, and other electronic products have the function of extended storage. The extended storage function is mainly realized by inserting a flash memory card, such as CF card, SD card, MiniSD card, RS-MMC card and MMC card, etc. When the data in the flash memory card needs to be transferred to the computer, it is generally necessary to connect the corresponding electronic product and the computer through a data cable, but this method has problems in actual use, such as the inconvenient disassembly of the flash memory card One kind of flash memory card and one kind of data cable are correspondingly used, and the use cost is relatively high. Then there was a car...

AI Technical Summary

Problems solved by technology

In the interactive system composed of the host, card reader and card, from the perspective of the host, it directly interacts with the card, while the card reader acts as a communication channel between the host and the card. The traditional card reader The reader faithfully executes the commands of the host. If the card reader "unfaithfully" executes the commands of the host, it will affect all subsequent operations. The host will stop sending instructions to the card reader or continuously send error correction commands, which is less secure. Inconvenient to use

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