System for transmitting data by using USB interface

摘要

A system for transmitting data by using a USB interface is provided. The system includes: a terminal equipment; a data transmission line, having a first terminal configured as a first USB interface and a second terminal configured as an interface adapted for connecting with the terminal equipment, and configured to transmit information from the terminal equipment directly; and an electronic signature token, including a second USB interface configured to be connected with the first USB interface to receive the information from the terminal equipment, a selecting module connected with the second USB interface and configured to detect the information received by the second USB interface and to determine a data transmission protocol type according to the information, and a modulating and demodulating module connected with the selecting module and configured to demodulate the information in a demodulation mode matched with the data transmission protocol type and to obtain demodulated data.

主权项

1. A system for transmitting data by using a USB interface, comprising:
a terminal equipment; a data transmission line, having a first terminal configured as a first USB interface and a second terminal configured as an interface adapted for connecting with the terminal equipment, and configured to transmit information from the terminal equipment directly; and an electronic signature token, comprising:
a second USB interface, configured to be connected with the first USB interface to receive the information from the terminal equipment;a security chip, connected with the second USB interface and configured to detect the information received by the second USB interface, to determine a data transmission protocol type used to transmit the information according to the information, to generate control information according to the data transmission protocol type, and to demodulate the received information using a demodulation mode matched with the data transmission protocol type to obtain demodulated data;a gate circuit, connected with the second USB interface and the security chip respectively, and configured to receive the control information from a control terminal of the security chip, and to connect the second USB interface with a modulating and demodulating terminal supporting the data transmission protocol type in the security chip according to the control information.