Method, device and paster card for forwarding control

Abstract

The invention discloses a method, a device and a paster card for forwarding control, relating to the technique of communication. The method comprises the following steps of: receiving a command sent by a terminal; directly processing the command when the command is a special command or a first chip connected with the terminal is only utilized at present; and processing the command according to a command type, a command content and the present states of the first chip and the second chip when the command is a non-special command and the first chip and a second chip connected with the first chip are synchronously utilized at present. After receiving the command sent by the terminal, the first chip connected with the terminal determines whether the command is directly processed or forwarded to the second chip according to the command type and the present states of the first chip and the second chip, and further the judgment and the forwarding of the chip received by the first chip are realized, the correctness and the reliability of signal transmission and transmission among the terminal, the first chip and the second chip are ensured, and the given command or data are intercepted and processed.

Description

technical field [0001] The present invention relates to communication technology, in particular to a forwarding control method, device and patch card. Background technique [0002] With the expansion of the application range of smart cards, the functions and types of smart cards are becoming more and more abundant. From the original single card and single chip, dual cards, dual chips and even multi-card and multi-chip models have evolved. [0003] When using dual cards, dual chips or multi-cards, multi-chips, after the first chip connected to the terminal receives the instruction sent by the terminal, it first needs to determine whether the instruction is processed by the first chip or the first chip connected to the first chip. Two-chip processing. [0004] For example, a patch card is a special card, which consists of two rows of chip contacts, the upper row of contacts is connected to the mobile phone, responsible for signal transmission and data communication between th...

AI Technical Summary

Problems solved by technology

[0005] Since the first chip is not only responsible for instruction processing, but also responsible for the judgment and forwarding of instructions, the control programs in smart cards such as SIM cards or USIM cards cannot be directly applied to the first chip.

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