WO2017045178A1 - 一种信息卡识别电路及终端 - Google Patents

一种信息卡识别电路及终端 Download PDF

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Publication number
WO2017045178A1
WO2017045178A1 PCT/CN2015/089801 CN2015089801W WO2017045178A1 WO 2017045178 A1 WO2017045178 A1 WO 2017045178A1 CN 2015089801 W CN2015089801 W CN 2015089801W WO 2017045178 A1 WO2017045178 A1 WO 2017045178A1
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Prior art keywords
information card
card
control chip
information
control
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PCT/CN2015/089801
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English (en)
French (fr)
Inventor
张明
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201580065488.9A priority Critical patent/CN107004105B/zh
Priority to PCT/CN2015/089801 priority patent/WO2017045178A1/zh
Publication of WO2017045178A1 publication Critical patent/WO2017045178A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/14—Handling requests for interconnection or transfer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an information card identification circuit and a terminal.
  • the functions of the set-top box are diversified, and the smart card and the Subscriber Identity Module (SIM) card can be simultaneously supported to realize dual card insertion.
  • SIM Subscriber Identity Module
  • the embodiment of the invention provides an information card identification circuit and a terminal, which solves the problem that the existing user confuses the card insertion port and causes the card to be incorrect.
  • an embodiment of the present invention provides an information card identification circuit, including: a card holder, an N ⁇ 1 selection switch, N information card control chips, and a controller; and the N is an integer greater than or equal to 2;
  • the N ⁇ 1 selection switch includes: a control end, a common end, and N selection ends, the control end is connected to the controller, and the common end is connected to the first end of the card holder, and the N options are The terminals are respectively connected to the N information card control chips; the controller is connected to the second end of the card holder, and the N information card control chips;
  • the card holder is used for loading an information card
  • the information card is configured to send response data to the information card control chip
  • the information card control chip is configured to: after determining the communication with the information card, receive the response data, and send the response data to the controller;
  • the controller is configured to detect whether the information card is loaded on the card holder, and when it is detected that the information card is loaded on the card holder, sequentially output to the control end of the N ⁇ 1 selection switch. Controlling the signal until the controller determines that the information card matches the information card control chip currently connected to the information card after receiving the response data, and terminates sending a control signal to the control terminal;
  • the N ⁇ 1 selection switch is configured to connect an information card loaded on the deck to an information card control chip of the N information card control chips according to a control signal received from the control terminal.
  • the controller sequentially outputs a control signal to a control end of the N ⁇ 1 selection switch, where the controller is configured to:
  • stop outputting a control signal to the control end of the N ⁇ 1 selection switch If yes, stop outputting a control signal to the control end of the N ⁇ 1 selection switch; if not, send a second control signal to the N ⁇ 1 selection switch, the second control signal is used to indicate the
  • the N ⁇ 1 selection switch connects the common end with the second selection end, and the second selection end is connected to the second information card control chip.
  • the controller is configured to determine whether the information card matches the first information card control chip, specifically, The controller is used to:
  • the attribute information is used to identify the information card
  • the information card control relationship table is configured to: store a correspondence between the information card control chip and the information card controlled by the information card control chip;
  • the information card corresponds to the first information card control chip, determining that the information card matches the first information card control chip;
  • the information card does not correspond to the first information card control chip, it is determined that the information card does not match the first information card control chip.
  • the controller is configured to send an indication message to the first information card control chip in sequence, specifically, the control Used for:
  • the first information card control chip transmits a second power supply signal, a reset signal, and a clock signal to the information card.
  • the card holder in combination with any one of the first aspect to the third implementable manner of the first aspect, is provided with: connecting the controller Card in-position detection circuit;
  • the controller is configured to detect whether the information card is loaded on the card holder, and the controller is configured to:
  • an embodiment of the present invention provides a terminal, including at least one information card identification circuit, which is implemented in any one of the fourth implementation manners of the first aspect to the first aspect.
  • an embodiment of the present invention provides an information card identification circuit, including: a card a N ⁇ 1 selection switch, N information card control chips, and a controller; the card holder for loading an information card, the N ⁇ 1 selection switch for controlling a signal input according to the controller, And the information card loaded on the card holder is connected to one of the N information card control chips; the N information card control chips are used to control N kinds of information cards one-to-one; the controller For detecting whether an information card is loaded on the card holder, and when detecting that an information card is loaded on the card holder, sequentially inputting M control signals to the N ⁇ 1 selection switch until the controller is After receiving the response data, when it is determined that the information card matches the information card control chip currently connected to the information card, the control signal is sent to the control terminal.
  • the controller sequentially sends a control signal to the selection switch, so that the selection switch switches between the information card and the information card control chip.
  • the selection switch switches between the information card and the information card control chip.
  • FIG. 1 is a structural diagram of an information card identification circuit according to an embodiment of the present invention.
  • FIG. 2 is a structural diagram of a card holder according to an embodiment of the present invention.
  • FIG. 3 is a structural diagram of a 2 ⁇ 1 selection switch according to an embodiment of the present invention.
  • FIG. 4 is a structural diagram of a terminal according to an embodiment of the present invention.
  • FIG. 1 is a structural diagram of an information card identification circuit 10 according to an embodiment of the present invention.
  • the information card identification circuit may include: a card holder 101, an N ⁇ 1 selection switch 102, and N information cards.
  • the control chip 103, and the controller 104, the N is an integer greater than or equal to 2.
  • the card holder 101 is used for loading an information card.
  • the information card may be: a Subscriber Identity Module (SIM) card or a smart card, configured to send response data to the information card control chip if the power supply is successful; the response data may be information.
  • SIM Subscriber Identity Module
  • the N ⁇ 1 selection switch 102 may include: a control end, a common end, and N selection ends; the common end is connected to the first end of the card holder 101, and the control end is connected to the controller 104, N selection terminals are respectively connected to the N information card control chips 103 in a one-to-one correspondence; and are used for selecting one of the common terminal and the N selection terminals according to a control signal received from the control terminal
  • the terminal is connected, that is, the information card loaded on the deck is connected to one of the N information card control chips.
  • the controller 104 may be a central processing unit (CPU), connected to the second end of the card holder 101, and the N information card control chips; for detecting whether the information card is present Loading on the card holder, and when detecting that the information card is loaded on the card holder, sequentially outputting a control signal to the control end of the N ⁇ 1 selection switch until the controller receives the response After the data is determined, when the information card is matched with the information card control chip currently connected to the information card, the control signal is sent to the control terminal.
  • CPU central processing unit
  • the matching in the embodiment of the present invention may refer to: the information card control chip currently connected to the information card is a control chip that controls the information card.
  • the controller sequentially sends a control signal to the selection switch, so that the selection switch switches between the information card and the information card control chip. Connect until the information card The user is connected with the matching information card control chip, and the user does not need to worry about the information card error, which improves the user experience and solves the problem that the existing user confuses the SIM card interface and the smart card interface, resulting in a card error.
  • VCC Volt Current Condenser
  • RST reset
  • IO input and output
  • CLK clock
  • the card control chip is connected to complete data communication, the first end of the card holder 101, the common end of the N ⁇ 1 selection switch 102, each selection end of the N ⁇ 1 selection switch 102, and the information card control chip
  • the corresponding settings are: VCC pin, RST pin, IO pin, and CLK pin four pins; and, as shown in FIG. 1, the first end of the card holder 101 and the common end
  • the connection can be:
  • the four pins of the first end are connected with four pins of the common terminal of the N ⁇ 1 selection switch 102: the VCC pin, the RST pin, the IO pin, and the CLK pin are connected one by one to form four pins. Connect the channel.
  • connection between the selection end and the information card control chip may specifically be:
  • the four pins of the selection terminal are connected with four pins set on the information card control chip: the VCC pin, the RST pin, the IO pin, and the CLK pin, to form four connection channels.
  • the card holder 101 may further be provided with: a card in-position detecting circuit; Measuring circuit is connected to the controller;
  • the card presence detecting circuit can present different voltage values according to the situation that the information card is loaded or unloaded from the card holder 101;
  • the controller may be configured to determine whether an information card is loaded on the card holder 101 according to a voltage value of the card presence detecting circuit.
  • FIG. 2 is a structural diagram of the card holder 101 of FIG. 1 according to an embodiment of the present invention.
  • the card holder includes 13 metal pins and a 3.3V+10K resistor.
  • the peripheral circuit of the pull-up wherein the ninth pin is a detection pin, is connected with the peripheral circuit, and constitutes a card in-position detection circuit, and the controller is connected with the card in-position detection circuit, such as
  • the pin connection can also be connected to the detection point of the circuit; when the card holder is loaded on the information card, the pin is internally disconnected from the ground, and the external pin (ie, at the detection point) is high voltage; when there is no card seat When the card is loaded, the pin is internally grounded and the external pin (at the detection point) is low.
  • the pin included in the card holder shown in FIG. 2 is only an exemplary pin, and does not constitute a limitation on the structure of the card holder itself.
  • the controller 104 can be used to:
  • the second control signal is used to indicate that the N ⁇ 1 selection switch connects the common end with the second selection end, and the second selection end is connected to the second information card control chip.
  • control signal in the embodiment of the present invention may be represented by any type of signal that can indicate that the N ⁇ 1 connects the common end to a selective end, and is not limited in the embodiment of the present invention;
  • the control signal may be a high voltage signal or a low voltage signal, the high voltage signal is used to indicate that the information card is connected to an information card control chip, and the low voltage signal is used to indicate the information card to another information card.
  • FIG. 3 is a structural diagram of a 2 ⁇ 1 selection switch according to an embodiment of the present invention, for strobing an information card with a SIM control chip or a smart card control chip according to a control signal, wherein the control signal may be high.
  • the selection switch includes eight tristate buffers, which are respectively connected to the SIM control chip and the smart card control chip, wherein the tristate buffer is high.
  • the voltage is in an on state, is in an off state at a low voltage, and an input is connected to an input end of a set of tristate buffers connected to the SIM control chip, and the inverter can be high (low)
  • the voltage is converted to a low (high) voltage; thus, when the control signal CONTROL_EN is a high voltage signal, the tristate buffer connected to the smart card control chip is in an on state, thereby causing the information card to communicate with the smart card control chip, and passing through the inverter
  • the output to the set of tristate buffers connected to the SIM control chip is a low voltage, so that the tristate buffer connected to the SIM card control chip is in an off state, and the information card and the SIM card control chip are not Connectivity.
  • the 2 ⁇ 1 selection switch shown in FIG. 3 is only an exemplary structural diagram. In the actual application process, the selection switch may further include a circuit such as a voltage conversion, which is not described in detail herein.
  • the controller 104 can determine whether the information card matches the information card control chip by using the following method, such as:
  • the attribute information is used to identify the information card
  • the information card control relationship table is configured to: store a correspondence between the information card control chip and the information card controlled by the information card control chip;
  • the information card corresponds to the first information card control chip, determining that the information card matches the first information card control chip;
  • the first information card control chip is: a SIM control chip
  • the obtained information card attribute information identifies that the information card is: a smart card, according to Table 1 It may be determined that the first information card control chip does not match the information card; if the identifier information of the first information card control chip acquired by the controller identifies that the control chip is: a SIM control chip, the obtained information card attribute The information identifies that the information card is a SIM card, and according to Table 1, it can be determined that the first information card control core and the information card are matched.
  • the controller 104 is specifically configured to:
  • the first information card control chip transmits a second power supply signal, a reset signal, and a clock signal to the information card.
  • the power supply signal is used to supply power to the information card
  • the reset signal is used to initialize an information card
  • the clock signal is used for clock synchronization of the information card, so that the information card and the information card control chip can be completed. data communication.
  • the preset time is set as needed, and the comparison between the embodiments of the present invention is not limited.
  • the preset power supply sequence may be: a low-to-high power supply sequence to avoid direct high-voltage power supply to the information card, causing the information card to be burned out; for example, following the ISO7816 protocol, the existing information card supply voltage Generally: 1.8V, 3.3V, such as The smart card power supply voltage is 3.3V, and the SIM card power supply voltage is 1.8V and 3.3V. Therefore, when the information card loaded in the unknown card slot is a card, the information card cannot be directly powered by 3.3V. First, the information card control chip is instructed to supply 1.8V power to the information card.
  • the instruction information card control chip performs 3.3V power supply to the information card; if the response data is returned , it means that the information card works normally under the voltage value, and its attribute information can be directly read.
  • N 2
  • the two information card control chips are respectively: a SIM card control chip and a smart card control chip
  • the N ⁇ 1 is a 2 ⁇ 1 selection switch as shown in FIG. 3 as an example, and the information card provided by the present invention is provided.
  • the identification circuit automatically connects the SIM card or the smart card loaded on the card holder with its matching control chip for detailed description.
  • the power supply voltage of the SIM card is 1.8V and 3.3V
  • the power supply voltage of the smart card is 1.8V:
  • the controller After the SIM card is inserted into the card holder, the controller detects that a card is inserted through the card detection circuit.
  • the controller inputs a high voltage to the 2 ⁇ 1 selection switch, and controls the selection switch to connect the card with the SIM card control chip.
  • the controller sends the first indication information to the SIM card control chip, so that the SIM controls the chip to the card 1.8V voltage, the reset signal, and the clock signal.
  • the controller receives the response data (such as ATR data) returned by the SIM control chip, the attribute information of the information card is obtained, and if the attribute information indicates that the card is a SIM card, the card and the control chip are successfully Connected, stop transmitting the control signal; if the attribute information indicates that the card is a smart card, input a low voltage to the 2 ⁇ 1 selection switch, and control the selection switch to connect the card with the smart card control chip.
  • the response data such as ATR data
  • the controller If the controller does not get the response data within the preset time, it will send a second indication message to the SIM card control chip, so that the SIM control chip sends the card 3.3V voltage, the reset signal, the clock signal, and repeats the above step 4 .
  • an embodiment of the present invention provides an information card identification circuit, including: a card holder, an N ⁇ 1 selection switch, N information card control chips, and a controller; the card holder is used for loading an information card.
  • An N ⁇ 1 selection switch configured to connect, according to a control signal input by the controller, an information card loaded on the card holder with one of the N information card control chips; the N information cards Control chip for one-to-one control Forming N kinds of information cards; the controller is configured to detect whether an information card is loaded on the card holder, and when detecting that an information card is loaded on the card holder, sequentially inputting M to the N ⁇ 1 selection switch Control signals until the controller determines that the information card matches the information card control chip currently connected to the information card after receiving the response data, and terminates transmitting the control signal to the control terminal.
  • the controller sequentially sends a control signal to the selection switch, so that the selection switch switches between the information card and the information card control chip.
  • the selection switch switches between the information card and the information card control chip.
  • an embodiment of the present invention further provides a terminal.
  • the terminal may include at least one of the above-mentioned information card identification circuits 10.
  • the terminal may be a communication device that supports the use of the multi-card, such as a set-top box; the information card identification circuit 10 is the same as the information card identification circuit described in the first embodiment, and details are not described herein.
  • each information card identification circuit can carry the same information card, or can carry different information cards, and realize the sharing or multiplexing design of the information card.
  • each of the information card identification circuits may include one controller, or a plurality of information card identification circuits may share the same controller, which is not limited in the embodiment of the present invention.
  • an embodiment of the present invention provides a terminal, including at least one information card identification circuit.
  • Each information card identification circuit includes: a card holder, an N ⁇ 1 selection switch, N information card control chips, and a controller; the card holder for loading an information card, and the N ⁇ 1 selection switch for The control signal input by the controller connects the information card loaded on the card holder with one of the N information card control chips; the N information card control chips are used for one-to-one correspondence control a type of information card; the controller is configured to detect whether an information card is loaded on the card holder, and when detecting that an information card is loaded on the card holder, sequentially input M to the N ⁇ 1 selection switch Controlling the signal until the controller determines that the information card matches the information card control chip currently connected to the information card after receiving the response data, and terminates sending control to the control terminal Signal.
  • the controller in the information card identification circuit sequentially sends a control signal to the selection switch, so that the selection switch switches the information card and the information card control.

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Abstract

一种信息卡识别电路及终端，涉及通信技术领域，解决了现有用户混淆SIM卡接口和智能卡接口，导致插卡错误的问题。信息卡识别电路（10）包括：卡座（101），N×1选择开关（102）、N个信息卡控制芯片（103）、以及控制器（104）；卡座（101），用于装载信息卡，N×1选择开关（102），用于根据控制器（104）输入的控制信号，将卡座（101）上装载的信息卡与N个信息卡控制芯片（103）中的一个芯片连通；N个信息卡控制芯片（103），用于一一对应的控制N种信息卡；控制器（104），用于检测是否有信息卡装载于卡座（101），当检测到有信息卡装载于卡座（101）后，依次向N×1选择开关（102）输入M个控制信号，直至控制器（104）在接收到响应数据后，确定信息卡与信息卡当前连通的信息卡控制芯片（103）相匹配时，终止向控制端发送控制信号。

Description

一种信息卡识别电路及终端 技术领域
本发明涉及通信技术领域，尤其涉及一种信息卡识别电路及终端。
背景技术
随着多媒体技术的发展，机顶盒功能呈现多样化发展，可以同时支持智能卡和客户识别模块(Subscriber Identity Module，SIM)卡，实现双卡插入。
但是，根据国际标准化组织(International Organization for Standardization，ISO)7816协议中智能卡和SIM卡的设计尺寸的规定，许多生产厂商在设计机顶盒时，设计的SIM接口和智能卡接口的外形尺寸是一样的，这就使得很多用户在插入SIM卡和智能卡的过程中，容易混淆这两个接口，造成插卡错误，用户体验极差。
发明内容
本发明的实施例提供一种信息卡识别电路及终端，解决了现有用户混淆插卡口，导致插卡错误的问题。
为达到上述目的，本发明的实施例采用如下技术方案：
第一方面，本发明实施例提供一种信息卡识别电路，包括：卡座、N×1选择开关、N个信息卡控制芯片、以及控制器；所述N为大于或者等于2的整数；所述N×1选择开关包括：控制端，公共端，N个选择端，所述控制端与所述控制器连接，所述公共端与所述卡座的第一端连接，N个所述选择端分别与所述N个信息卡控制芯片连接；所述控制器连接所述卡座的第二端、以及所述N个信息卡控制芯片；
其中，所述卡座，用于装载信息卡；
所述信息卡，用于向所述信息卡控制芯片发送响应数据；
所述信息卡控制芯片，用于在确定与所述信息卡连通后，接收所述响应数据，并将所述响应数据发送至所述控制器；
所述控制器，用于检测是否有所述信息卡装载于所述卡座，当检测到有所述信息卡装载于所述卡座后，依次向所述N×1选择开关的控制端输出控制信号，直到所述控制器在接收到所述响应数据后，确定所述信息卡与所述信息卡当前连通的信息卡控制芯片相匹配时，终止向控制端发送控制信号；
所述N×1选择开关，用于根据从所述控制端接收的控制信号，将所述卡座上装载的信息卡与所述N个信息卡控制芯片中的一个信息卡控制芯片连通。
在第一方面的第一种可实现方式中，结合第一方面，所述控制器依次向所述N×1选择开关的控制端输出控制信号具体为，所述控制器用于：
向所述N×1选择开关的控制端输出第一控制信号，所述第一控制信号用于指示所述N×1选择开关将所述公共端与第一选择端连通，所述第一选择端与第一信息卡控制芯片连接；
确定所述信息卡与所述第一信息卡控制芯片是否匹配；
若匹配，则停止向所述N×1选择开关的控制端输出控制信号；若不匹配，则向所述N×1选择开关发送第二控制信号，所述第二控制信号用于指示所述N×1选择开关将所述公共端与第二选择端连通，所述第二选择端与所述第二信息卡控制芯片连接。
在第一方面的第二种可实现方式中，结合第一方面的第一种可实现方式，所述控制器用于，确定所述信息卡与所述第一信息卡控制芯片是否匹配具体为，所述控制器用于：
依次向所述第一信息卡控制芯片发送指示消息，直至接收到所述第一信息卡控制芯片返回的响应数据时，终止向所述第一信息卡控制芯片发送指示消息；所述指示消息用于指示所述第一信息卡控制芯片向所述信息卡发送供电信号、复位信号和时钟信号；
获取所述信息卡的属性信息；所述属性信息用于标识所述信息 卡；
查询预设的信息卡控制关系表；所述信息卡控制关系表用于存储：信息卡控制芯片与所述信息卡控制芯片所控制的信息卡的对应关系；
若所述信息卡与所述第一信息卡控制芯片对应，则确定所述信息卡与所述第一信息卡控制芯片相匹配；
若所述信息卡与所述第一信息卡控制芯片不对应，则确定所述信息卡与所述第一信息卡控制芯片不匹配。
在第一方面的第三种可实现方式中，结合第一方面的第二种可实现方式，所述控制器用于，依次向所述第一信息卡控制芯片发送指示消息具体为，所述控制器用于：
根据预设供电顺序向所述第一信息卡控制芯片发送第一指示消息，所述第一指示消息用于指示所述第一信息卡控制芯片向所述信息卡发送第一供电信号、复位信号和时钟信号；
若在预设时间内，未接收到所述第一信息卡控制芯片返回的响应数据，则向所述第一信息卡控制芯片发送第二指示消息，所述第二指示消息用于指示所述第一信息卡控制芯片向所述信息卡发送第二供电信号、复位信号和时钟信号。
在第一方面的第四种可实现方式中，结合第一方面至第一方面的第三种可实现方式中的任一种可实现方式，所述卡座上设置有：连接所述控制器的卡在位侦测电路；
所述控制器用于，检测是否有所述信息卡装载于所述卡座具体为，所述控制器用于：
根据所述卡在位侦测电路的电压值，确定是否有所述信息卡装载于所述卡座。
第二方面，本发明实施例提供一种终端，包含至少一个如第一方面至第一方面的第四种可实现方式中任一种可实现方式中所述的信息卡识别电路。
由上可知，本发明实施例提供一种信息卡识别电路，包括：卡 座，N×1选择开关、N个信息卡控制芯片、以及控制器；所述卡座，用于装载信息卡，所述N×1选择开关，用于根据所述控制器输入的控制信号，将所述卡座上装载的信息卡与所述N个信息卡控制芯片中的一个芯片连通；所述N个信息卡控制芯片，用于一一对应的控制N种信息卡；所述控制器，用于检测是否有信息卡装载于所述卡座，当检测到有信息卡装载于所述卡座后，依次向所述N×1选择开关输入M个控制信号，直至所述控制器在接收到所述响应数据后，确定所述信息卡与所述信息卡当前连通的信息卡控制芯片相匹配时，终止向控制端发送控制信号。如此，在本发明实施例提供的信息卡识别电路中，当用户将信息卡装载于卡槽之后，通过控制器依次向选择开关发送控制信号，使选择开关切换信息卡与信息卡控制芯片间的连接，直至将信息卡与其匹配的信息卡控制芯片相连通，对于用户而言，无需担心信息卡差错，提高了用户体验，解决了现有用户混淆SIM卡接口和智能卡接口，导致插卡错误的问题。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种信息卡识别电路的结构图；
图2为本发明实施例提供的一种卡座的结构图；
图3为本发明实施例提供的一种2×1选择开关的结构图；
图4为本发明实施例提供的一种终端的结构图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他 实施例，都属于本发明保护的范围。
图1为本发明实施例提供的一种信息卡识别电路10的结构图，如图1所示，所述信息卡识别电路可以包括：卡座101，N×1选择开关102、N个信息卡控制芯片103、以及控制器104，所述N为大于或者等于2的整数。
其中，所述卡座101，用于装载信息卡。
所述信息卡可以为：客户识别模块(Subscriber Identity Module，SIM)卡、或者智能卡，用于在自身供电成功的情况下，向所述信息卡控制芯片发送响应数据；所述响应数据可以为信息卡的IO通信时钟频率。
所述N×1选择开关102可以包括：控制端、公共端以及N个选择端；所述公共端连接所述卡座101的第一端，所述控制端连接所述控制器104，所述N个选择端分别一一对应的与所述N个信息卡控制芯片103连接；用于根据从所述控制端接收的控制信号，将所述公共端与所述N个选择端中的一个选择端连通，即将卡座上装载的信息卡与所述N个信息卡控制芯片中的一个信息卡控制芯片连通。
所述控制器104可以为是一个中央处理器(central processing unit，CPU)，连接所述卡座101的第二端、以及所述N个信息卡控制芯片；用于检测是否有所述信息卡装载于所述卡座，当检测到有所述信息卡装载于所述卡座后，依次向所述N×1选择开关的控制端输出控制信号，直到所述控制器在接收到所述响应数据后，确定所述信息卡与所述信息卡当前连通的信息卡控制芯片相匹配时，终止向控制端发送控制信号。
其中，本发明实施例中所述的相匹配可以指：与所述信息卡当前连通的信息卡控制芯片为控制所述信息卡的控制芯片。
如此，在本发明实施例提供的信息卡识别电路中，当用户将信息卡装载于卡槽之后，通过控制器依次向选择开关发送控制信号，使选择开关切换信息卡与信息卡控制芯片间的连接，直至将信息卡 与其匹配的信息卡控制芯片相连通，对于用户而言，无需担心信息卡差错，提高了用户体验，解决了现有用户混淆SIM卡接口和智能卡接口，导致插卡错误的问题。
具体的，遵循ISO7816协议规范，现有包括智能卡或SIM卡在内的信息卡上通常需要设置有四个功能性的金属引脚，如：电源电压(Volt Current Condenser，VCC)引脚、复位(Reset，RST)引脚、输入输出(Input Output，IO)引脚、时钟(Clock，CLK)引脚以进行数据传输的引脚，因此，为了使信息卡装载在卡座101上，且与信息卡控制芯片连通，完成数据通信，所述卡座101的第一端、所述N×1选择开关102的公共端、所述N×1选择开关102的每个选择端、以及信息卡控制芯片上均需要对应设置有：VCC引脚、RST引脚、IO引脚、以及CLK引脚四个引脚；并且，如图1所示，所述卡座101的第一端与所述公共端连接具体可以为：
所述第一端的四个引脚与N×1选择开关102的公共端设置的四个引脚：VCC引脚、RST引脚、IO引脚、以及CLK引脚一一连接，形成四个连接通道。
所述选择端与所述信息卡控制芯片连接具体可以为：
所述选择端的四个引脚与信息卡控制芯片上设置的四个引脚：VCC引脚、RST引脚、IO引脚、以及CLK引脚一一连接，形成四个连接通道。
具体的，为了方便地检测出是否有卡装载于所述卡座101内，本发明实施例中，所述卡座101上还可以设置有：卡在位侦测电路；所述卡在位侦测电路与所述控制器连接；
其中，所述卡在位侦测电路可以根据信息卡装载于或拔出所述卡座101的情况，呈现不同的电压值；
所述控制器，可以用于根据所述卡在位侦测电路上的电压值，确定是否有信息卡装载于所述卡座101。
例如，图2为本发明实施例提供的图1所述卡座101的结构图，如图2所示，所述卡座包含13个金属引脚，和一个3.3V+10K电阻 上拉的外围电路，其中，第9个引脚为检测引脚，与外围电路连接，构成卡在位侦测电路，且控制器与该卡在位侦测电路连接，如可以与第9引脚连接，也可以与该电路的检测点连接；当卡座内装载于信息卡后，该引脚内部与地断开，外部引脚(即检测点处)为高电压；当卡座内无卡装载于时，引脚内部接地，外部引脚(检测点处)为低电压。需要说明的是，图2所示的卡座包含的引脚仅为示例性引脚，并不构成对该卡座自身结构的限制。
具体的，本发明实施例中，控制器104可以用于：
向所述N×1选择开关的控制端输出第一控制信号，所述第一控制信号用于指示所述N×1选择开关将所述公共端与第一选择端连通，所述第一选择端与第一信息卡控制芯片连接；
确定所述信息卡与所述第一信息卡控制芯片是否匹配；
若匹配，则停止向所述N×1选择开关的控制端输出控制信号；
若不匹配，则向所述N×1选择开关发送第二控制信号，重新确定所述信息卡与所述第一信息卡控制芯片是否匹配，根据匹配情况停止发送控制信号或者继续发送发送下一控制信息，直至所述N×1选择开关根据控制信号选择出的信息卡控制芯片与所述信息卡相匹配。
其中，所述第二控制信号用于指示所述N×1选择开关将所述公共端与第二选择端连通，所述第二选择端与所述第二信息卡控制芯片连接。
需要说明的是，本发明实施例中所述的控制信号可以用能够指示所述N×1将公共端与一选择端连通的任一形式的信号表示，本发明实施例对比不进行限定；如：当N＝2时，所述控制信号可以为高电压信号或低电压信号，用高电压信号指示将信息卡与一信息卡控制芯片连通，用低电压信号指示将信息卡与另一信息卡控制芯片连通；当N＝4时，可以设置如下4种形式的控制信号：00、01、10、11，分别对应指示将信息卡与第一信息卡控制芯片、第二信息卡控制芯片、第三信息卡控制芯片、第四信息卡控制芯片连通。
例如，图3示出了本发明实施例提供的一种2×1选择开关的结构图，用于根据控制信号将信息卡与SIM控制芯片或智能卡控制芯片选通，其中，控制信号可以为高电压、低电压两种信号；如图3所示，该选择开关包含8个三态缓冲器，分为两组分别与SIM控制芯片、智能卡控制芯片连接，其中，所述三态缓冲器在高电压下处于导通状态，在低电压下处于截止状态，且与所述SIM控制芯片连接的一组三态缓冲器的输入端连接有反相器，所述反相器可以将高(低)电压转换为低(高)电压；如此，当控制信号CONTROL_EN为高电压信号，与智能卡控制芯片连接的三态缓冲器处于导通状态，进而使信息卡与智能卡控制芯片连通，而经过反相器输出到与所述SIM控制芯片连接的一组三态缓冲器为低电压，使得与SIM卡控制芯片连接的三态缓冲器处于截止状态，信息卡与SIM卡控制芯片不能连通。需要说明的是，图3所示的2×1选择开关仅为实施例性结构图，在实际应用过程中，该选择开关还可以包含电压转换等电路，在此不再详细描述。
具体的，本发明实施例中，所述控制器104可以通过下述方法确定信息卡与信息卡控制芯片是否匹配，如：
依次向所述第一信息卡控制芯片发送指示消息，直至接收到所述第一信息卡控制芯片返回的响应数据时，终止向所述第一信息卡控制芯片发送指示消息；所述指示消息用于指示所述第一信息卡控制芯片向所述信息卡发送供电信号、复位信号和时钟信号；
获取所述信息卡的属性信息；所述属性信息用于标识所述信息卡；
查询预设的信息卡控制关系表；所述信息卡控制关系表用于存储：信息卡控制芯片与所述信息卡控制芯片所控制的信息卡的对应关系；
若所述信息卡与所述第一信息卡控制芯片对应，则确定所述信息卡与所述第一信息卡控制芯片相匹配；
若所述信息卡与所述第一信息卡控制芯片不对应，则确定所述 信息卡与所述第一信息卡控制芯片不匹配。
例如，如下表1所示，为预存的信息卡控制关系表，若第一信息卡控制芯片为：SIM控制芯片，获取到的信息卡属性信息标识所述信息卡为：智能卡，则根据表1可以确定所述第一信息卡控制芯片与所述信息卡不匹配；若控制器获取到的第一信息卡控制芯片的标识信息标识所述控制芯片为：SIM控制芯片，获取到的信息卡属性信息标识所述信息卡为：SIM卡，则根据表1可以确定所述第一信息卡控制芯与所述信息卡是匹配的。
表1
信息卡控制芯片 信息卡
SIM控制芯片 SIM卡
智能卡控制芯片 智能卡
具体的，为了保证信息卡的正常工作，所述控制器104具体用于：
根据预设供电顺序向所述第一信息卡控制芯片发送第一指示消息，所述第一指示消息用于指示所述第一信息卡控制芯片向所述信息卡发送第一供电信号、复位信号和时钟信号；
若在预设时间内，未接收到所述第一信息卡控制芯片返回的响应数据，则向所述第一信息卡控制芯片发送第二指示消息，所述第二指示消息用于指示所述第一信息卡控制芯片向所述信息卡发送第二供电信号、复位信号和时钟信号。
其中，所述供电信号用于对所述信息卡供电，所述复位信号对信息卡进行初始化，所述时钟信号用于对所述信息卡进行时钟同步，使得信息卡和信息卡控制芯片可以完成数据通信。
所述预设时间根据需要进行设定，本发明实施例对比不进行限定。
所述预设供电顺序可以为：从低到高的供电顺序，以避免直接对信息卡进行高电压供电，造成信息卡被烧坏的问题；例如，遵循ISO7816协议规定，现有信息卡供电电压一般有：1.8V、3.3V，如 智能卡供电电压为3.3V，SIM卡供电电压为1.8V和3.3V两种，因此，在未知卡槽内装载的信息卡为哪种卡时，不可直接对信息卡进行3.3V高压供电，而是先指示信息卡控制芯片对该信息卡进行1.8V供电，若无回应，则表示该信息卡不工作在1.8V，进而对指示信息卡控制芯片对该信息卡进行3.3V供电；若返回响应数据，则表示该信息卡在该电压值下正常工作，可以直接读取其属性信息。
下面以N＝2，2个信息卡控制芯片分别为：SIM卡控制芯片、智能卡控制芯片，所述N×1为如图3所示的2×1选择开关为例，对本发明提供的信息卡识别电路如何自动将装载于卡座的SIM卡或者智能卡与其匹配的控制芯片连通进行详细说明，其中，SIM卡的供电电压为1.8V和3.3V，智能卡的供电电压为1.8V：
1、SIM卡插入卡座后，控制器通过卡侦测电路检测到有卡插入。
2、控制器向2×1选择开关输入高电压，控制选择开关将卡与SIM卡控制芯片连通。
3、控制器向SIM卡控制芯片发送第一指示信息，使SIM控制芯片向卡1.8V电压、复位信号、时钟信号。
4、若控制器接收到卡通过SIM控制芯片返回的响应数据(如ATR数据)，则获取信息卡的属性信息，若所述属性信息表示：该卡为SIM卡，则成功将卡与其控制芯片连通，停止发送控制信号；若所述属性信息表示：该卡为智能卡，则向2×1选择开关输入低电压，控制选择开关将卡与智能卡控制芯片连通。
5、若控制器在预设时间内得不到响应数据，则会向SIM卡控制芯片发送第二指示信息，使SIM控制芯片向卡3.3V电压、复位信号、时钟信号，并重复上述步骤4。
由上可知，本发明实施例提供一种信息卡识别电路，包括：卡座，N×1选择开关、N个信息卡控制芯片、以及控制器；所述卡座，用于装载信息卡，所述N×1选择开关，用于根据所述控制器输入的控制信号，将所述卡座上装载的信息卡与所述N个信息卡控制芯片中的一个芯片连通；所述N个信息卡控制芯片，用于一一对应的控 制N种信息卡；所述控制器，用于检测是否有信息卡装载于所述卡座，当检测到有信息卡装载于所述卡座后，依次向所述N×1选择开关输入M个控制信号，直至所述控制器在接收到所述响应数据后，确定所述信息卡与所述信息卡当前连通的信息卡控制芯片相匹配时，终止向控制端发送控制信号。如此，在本发明实施例提供的信息卡识别电路中，当用户将信息卡装载于卡槽之后，通过控制器依次向选择开关发送控制信号，使选择开关切换信息卡与信息卡控制芯片间的连接，直至将信息卡与其匹配的信息卡控制芯片相连通，对于用户而言，无需担心信息卡差错，提高了用户体验，解决了现有用户混淆SIM卡接口和智能卡接口，导致插卡错误的问题。
另一方面，本发明实施例还提供了一种终端，如图4所示，所述终端可以包括至少一个上述的信息卡识别电路10。
其中，所述终端可以为：机顶盒等支持多卡使用的通信设备；所述信息卡识别电路10如实施例一所述的信息卡识别电路相同，在此不再赘述。
需要说明的是，每个信息卡识别电路可以承载同一信息卡，也可以承载不同的信息卡，实现信息卡的共用或复用设计。此外，每个信息卡识别电路可以包含一个控制器，也可以多个信息卡识别电路共用同一控制器，本发明实施例对比不进行限定。
由上可知，本发明实施例提供一种终端，包括至少一个信息卡识别电路。每个信息卡识别电路包括：卡座，N×1选择开关、N个信息卡控制芯片、以及控制器；所述卡座，用于装载信息卡，所述N×1选择开关，用于根据所述控制器输入的控制信号，将所述卡座上装载的信息卡与所述N个信息卡控制芯片中的一个芯片连通；所述N个信息卡控制芯片，用于一一对应的控制N种信息卡；所述控制器，用于检测是否有信息卡装载于所述卡座，当检测到有信息卡装载于所述卡座后，依次向所述N×1选择开关输入M个控制信号，直至所述控制器在接收到所述响应数据后，确定所述信息卡与所述信息卡当前连通的信息卡控制芯片相匹配时，终止向控制端发送控 制信号。如此，在本发明实施例提供的终端中，当用户将信息卡装载于卡槽之后，通过信息卡识别电路中的控制器依次向选择开关发送控制信号，使选择开关切换信息卡与信息卡控制芯片间的连接，直至将信息卡与其匹配的信息卡控制芯片相连通，对于用户而言，无需担心信息卡差错，提高了用户体验，解决了现有用户混淆SIM卡接口和智能卡接口，导致插卡错误的问题。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应所述以权利要求的保护范围为准。

Claims (6)

  1. 一种信息卡识别电路，其特征在于，包括：卡座、N×1选择开关、N个信息卡控制芯片、以及控制器；所述N为大于或者等于2的整数；所述N×1选择开关包括：控制端，公共端，N个选择端，所述控制端与所述控制器连接，所述公共端与所述卡座的第一端连接，N个所述选择端分别与所述N个信息卡控制芯片连接；所述控制器连接所述卡座的第二端、以及所述N个信息卡控制芯片；
    其中，所述卡座，用于装载信息卡；
    所述信息卡，用于向所述信息卡控制芯片发送响应数据；
    所述信息卡控制芯片，用于在确定与所述信息卡连通后，接收所述响应数据，并将所述响应数据发送至所述控制器；
    所述控制器，用于检测是否有所述信息卡装载于所述卡座，当检测到有所述信息卡装载于所述卡座后，依次向所述N×1选择开关的控制端输出控制信号，直到所述控制器在接收到所述响应数据后，确定所述信息卡与所述信息卡当前连通的信息卡控制芯片相匹配时，终止向控制端发送控制信号；
    所述N×1选择开关，用于根据从所述控制端接收的控制信号，将所述卡座上装载的信息卡与所述N个信息卡控制芯片中的一个信息卡控制芯片连通。
  2. 根据权利要求1所述的信息卡识别电路，其特征在于，所述控制器用于，依次向所述N×1选择开关的控制端输出控制信号具体为，所述控制器用于：
    向所述N×1选择开关的控制端输出第一控制信号，所述第一控制信号用于指示所述N×1选择开关将所述公共端与第一选择端连通，所述第一选择端与第一信息卡控制芯片连接；
    确定所述信息卡与所述第一信息卡控制芯片是否匹配；
    若匹配，则停止向所述N×1选择开关的控制端输出控制信号；若不匹配，则向所述N×1选择开关发送第二控制信号，所述第二控制信号用于指示所述N×1选择开关将所述公共端与第二选择端连 通，所述第二选择端与所述第二信息卡控制芯片连接。
  3. 根据权利要求2所述的信息卡识别电路，其特征在于，所述控制器用于，确定所述信息卡与所述第一信息卡控制芯片是否匹配具体为，所述控制器用于：
    依次向所述第一信息卡控制芯片发送指示消息，直至接收到所述第一信息卡控制芯片返回的响应数据时，终止向所述第一信息卡控制芯片发送指示消息；所述指示消息用于指示所述第一信息卡控制芯片向所述信息卡发送供电信号、复位信号和时钟信号；
    获取所述信息卡的属性信息；所述属性信息用于标识所述信息卡；
    查询预设的信息卡控制关系表；所述信息卡控制关系表用于存储：信息卡控制芯片与所述信息卡控制芯片所控制的信息卡的对应关系；
    若所述信息卡与所述第一信息卡控制芯片对应，则确定所述信息卡与所述第一信息卡控制芯片相匹配；
    若所述信息卡与所述第一信息卡控制芯片不对应，则确定所述信息卡与所述第一信息卡控制芯片不匹配。
  4. 根据权利要求3所述的信息卡识别电路，其特征在于，所述控制器用于，依次向所述第一信息卡控制芯片发送指示消息具体为，所述控制器用于：
    根据预设供电顺序向所述第一信息卡控制芯片发送第一指示消息，所述第一指示消息用于指示所述第一信息卡控制芯片向所述信息卡发送第一供电信号、复位信号和时钟信号；
    若在预设时间内，未接收到所述第一信息卡控制芯片返回的响应数据，则向所述第一信息卡控制芯片发送第二指示消息，所述第二指示消息用于指示所述第一信息卡控制芯片向所述信息卡发送第二供电信号、复位信号和时钟信号。
  5. 根据权利要求1至4任一项所述的信息卡识别电路，其特征在于，所述卡座上设置有：连接所述控制器的卡在位侦测电路；
    所述控制器用于，检测是否有所述信息卡装载于所述卡座，具体为，所述控制器用于：
    根据所述卡在位侦测电路的电压值，确定是否有所述信息卡装载于所述卡座。
  6. 一种终端，其特征在于，包含至少一个如权利要求1-5任一项所述的信息卡识别电路。
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