SMART CARD READ/WRITE CONTROL METHOD BASED ON USB INTERFACE AND READER/WRITER THEREOF

• US 20070228164A1
• Filed: 11/29/2006
• Published: 10/04/2007
• Est. Priority Date: 03/31/2006
• Status: Active Grant

• Current Assignee: Feitian Technologies Company Limited
• Original Assignee: Feitian Technologies Company Limited
• Inventors: LU, Zhou, YU, Hua Zhang
• Granted Patent: US 8,060,673 B2
• Time in Patent Office: Days
• US Class Current: 235/441
• CPC Class Codes: G06F 13/385 for adaptation of a particular data processing system to different peripheral devices

Abstract

The present invention uses a smart control module with HID descriptors to communicate with the host side in accordance with the standard HID communication protocol, so as to interact with the smart card, which can eliminate the need of installing a private driver from a particular manufacturer when installing its reader/writer. The driver of the HID device can be installed automatically upon installation of the operating system. The users can use the reader/writer easily without carrying a driver around. It is not necessary for the users to deal with upgraded versions of the driver, to consider compatibilities of drivers for different products, to confront usage risks of the operating system due to the driver, or to worry about contamination of the operating system resulted from the installation and uninstallation of the driver.

Claims

1. A smart card read/write control method based on a USB interface, wherein comprising the steps of:

a host establishing a connection with the smart card reader/writer by enumerating a USB Human Interface Device (HID), gaining human interface class and report descriptors, and setting up communications with the smart card reader/writer;

the host sending commands to the smart card reader/writer via the USB interface with a standard HID protocol;

the smart card reader/writer resolving and processing the control commands, including data interaction with the smart card according to the commands; and

the smart card reader/writer converting a processing result to be returned into data compliant with the HID protocol, and sending the data back to the host.

2. The method according to claim 1, wherein the Human Interface Device (HID) commands are SET FEATURE and GET FEATURE.

3. The method according to claim 1, wherein the control commands comprise identity authentication, privilege management and/or read/write operations.

4. The method according to claim 2, wherein the control commands comprise identity authentication, privilege management and/or read/write operations.

5. A smart card reader/writer using the control method according to claim 1, wherein comprising a smart processor module with built-in Human Interface Device (HID) descriptors, and a USB interface and a smart card module for processing or reading/writing information within a smart card, which are connected respectively with the smart processor module.

6. The smart card reader/writer according to claim 5, wherein the smart processor module comprises a smart control unit, and a USB communication protocol unit, a program memory unit and an Input/Output (I/O) unit that are connected respectively with the smart control unit, the USB communication protocol unit being connected with the USB interface, and the I/O unit being connected with the smart card module.

7. The smart card reader/writer according to claim 5, wherein the smart card module is a contact smart card connection unit.

8. The smart card reader/writer according to claim 5, wherein the smart card module is a contactless card control module comprising a modulating and transmitting unit and a receiving and demodulating unit.

9. The smart card reader/writer according to claim 6, wherein the smart processor module further comprises a smart card insertion detection unit connected with the smart control unit and with the smart card module.