TWI466579B - A smart card registration method in a mobile phone - Google Patents

Description

Mobile phone and its smart card registration method

The present invention relates to the field of communication device terminals, and in particular, to a mobile phone and a smart card registration method thereof.

With the development of electronic technology, there have been mobile phones supporting two smart cards, and many mobile phones include two card slots, respectively supporting smart cards of the GSM network standard and smart cards supporting the CDMA network standard. However, the mobile phone is generally designed to be CDMA modem module fixedly connected to one of the card slots, and the GSM modem module is fixedly connected to another card slot. Both card slots can be inserted into the CDMA network standard smart card and GSM network. Road-style smart card. The user must insert a smart card (UIM card) supporting the CDMA network standard into the card slot connected to the CDMA modem module, and insert the smart card (SIM card) supporting the GSM network standard into the GSM modem module. The connected card slot allows each smart card to register properly. If the user inserts the smart card into the wrong card slot, the registration of the mobile phone GSM and CDMA network will fail, which greatly reduces the experience of the mobile phone.

In view of the above, it is necessary to provide a mobile phone. The mobile phone includes a first card slot and a second card slot for installing a smart card supporting the GSM network standard and a smart card supporting the CDMA network standard. The mobile phone includes a switching control module, a switching circuit, a CDMA modem module, and a GSM modem module, wherein: the switching control module is configured to send a selection signal to the switching circuit; And selecting, according to the selection signal sent by the switching control module, the CDMA modem module or the GSM modem module to select one of the smart cards and establishing a connection with the smart card; the CDMA modem module is used to The selected smart card sends a command to select a CDMA card directory, and waits for a response of the currently selected smart card; the CDMA modem module is further configured to: after successfully receiving the response of the currently selected smart card, from the smart The card reads the data and initiates a network registration of the CDMA network standard; otherwise, the signal to the switching control module is sent to the switching control module; the switching control module is further configured to: after successfully receiving the signal that the response fails, The switching circuit sends a selection signal to establish a connection between the GSM modem module and the currently selected smart card; the GSM modem module is configured to be used with the currently selected smart card After the connection is established, data is read from the smart card and initiate a network of registered GSM network standard.

In view of the above, it is also necessary to provide a smart card registration method for a mobile phone. The method comprises: (a) the switching control module sends a selection signal to the switching circuit, so that the CDMA modem module selects one of the smart cards and establishes a connection with the smart card; (b) the CDMA modem module is currently selected The smart card sends a command to select a CDMA card directory; (c) the CDMA modem module waits for the smart card to answer, if the response is successful, step (d) is performed, otherwise step (e) is performed; (d) the CDMA modulation solution The tuning module acquires data from the currently selected smart card for CDMA network registration; (e) the CDMA modem module sends a response failure signal to the switching control module; (f) the switching control module switches to The circuit sends a selection signal to enable the GSM modem module to establish a connection with the currently selected smart card; (g) the GSM modem module initiates a GSM network registration with the currently selected smart card.

By implementing the invention, the user does not need to care about the first card slot of the mobile phone or the smart card of the network standard that needs to be inserted in the second card slot, which greatly facilitates the user.

The invention provides a mobile phone and a smart card registration method thereof, which realizes that a user can insert a smart card (UIM card) supporting the CDMA network standard and a smart card (SIM card) supporting the GSM network standard into the first card slot or the first The second card slot can register the network correctly. The basic idea is to send the selected CDMA card directory command to the currently selected smart card. If the response is successful, it indicates that the network standard supported by the smart card is CDMA; otherwise, the smart card is determined to support the wisdom of the GSM network standard. card.

Further details will be further described below with reference to the accompanying drawings.

As shown in FIG. 1, it is an architectural diagram of the mobile phone of the present invention. The mobile phone 10 includes a GSM modem module 100, a CDMA modem module 200, a switching control module 300, a switching circuit 400, a first card slot 500, and a second card slot 600. The first card slot 500 or the second card slot 600 is used to install a smart card supporting the GSM/CDMA network standard. Specifically, the first card slot 500 can be installed with a GSM network standard smart card or a CDMA network standard smart card; the second card slot 600 can be installed with a GSM network standard smart card or a CDMA network standard. Smart card.

The switching control module 300 is configured to send a selection signal to the switching circuit 400. The selection signal is used to control the switching circuit 400 to establish a connection between the CDMA modem module 200 or the GSM modem module 100 and the smart card in the first card slot 500 or the second card slot 600.

The switching circuit 400 is configured to enable the CDMA modem module 200 to select and establish a connection with one of the smart cards according to the selection signal sent by the switching control module 300. The currently selected smart card is the smart card in the first card slot 500 or the second card slot 600.

The CDMA modem module 200 is configured to send a CDMA card directory command to the currently selected smart card, and wait for a response of the currently selected smart card.

The CDMA modem module 200 is further configured to: after successfully receiving the response of the currently selected smart card, determine that the network mode of the currently selected smart card is CDMA, and read data from the smart card and initiate Network registration of the CDMA network standard; otherwise, it determines that the currently selected smart card network system is GSM, and sends a response failure signal to the handover control module 300.

The switching control module 300 is further configured to: after receiving the signal that the response fails, send a selection signal to the switching circuit 400, so that the GSM modem module 100 establishes a connection with the currently selected smart card.

The GSM modem module 100 is configured to read data from the smart card and initiate network registration of the GSM network standard after the GSM modem module 100 establishes a connection with the currently selected smart card.

After the above process completes the registration of the network of the currently selected smart card, the second smart card in the mobile phone 10 is registered in the same manner.

As shown in FIG. 2, it is a schematic diagram of the hardware interface of the switching circuit 400. The switching circuit 400 includes four communication interfaces, which are a first communication interface 401, a second communication interface 402, a third communication interface 403, and a fourth communication interface 404. The switching circuit 400 also includes a switch wafer 406 and a control port 405.

One end of the first communication interface 401 is connected to the GSM modem module 100, and the other end is connected to the switch chip 406.

One end of the second communication interface 402 is connected to the CDMA modem module 200, and the other end is connected to the switch chip 406.

One end of the third communication interface 403 is connected to the first card slot 500, and the other end is connected to the switch wafer 406.

One end of the fourth communication interface 404 is connected to the second card slot 600, and the other end is connected to the switch wafer 406.

The above four communication ports are four-wire level interfaces, including: power line, clock line, data line, and reset line.

The control port 405 is configured to receive a selection signal from the switching control module 300 and input the selection signal to the switch wafer 406.

The switch chip 406 connects the two communication interfaces of the four communication interfaces according to the received selection signal, and specifically includes: the first communication interface 401 is connected to the third communication interface 403; the first communication interface 401 and the fourth The communication interface 404 is connected; the second communication interface 402 is connected to the third communication interface 403; and the second communication interface 402 is connected to the fourth communication interface 404. Thereby, the GSM/CDMA modem module is connected with the smart card in the first card slot or the second card slot. The GSM modem module 100 and the CDMA modem module 200 need to establish a communication connection with the smart card in the first card slot 500 or the second card slot 600 through the switching circuit 400, but at the same time, the switching circuit 400 Only the GSM modem module 100 or the CDMA modem module 200 is allowed to establish a connection with the smart card in the first card slot 500 or the second card slot 600, specifically the smart card issued by the switching control module 300. The selection signal is determined.

As shown in FIG. 3, it is a flowchart of a smart card registration method of the mobile phone of the present invention.

In step S302, the switching control module 300 sends a selection signal to the switching circuit 400, so that the CDMA modem module 200 selects and establishes a connection with the smart card in the first card slot 500 or the second card slot 600.

Step S304, the CDMA modem module 200 sends a command for selecting a CDMA card directory to the currently selected smart card.

In step S306, the CDMA modem module 200 waits for a response. If the response is successful, step S308 is performed; otherwise, step S310 is performed.

Step S308, determining that the network mode of the currently selected smart card is CDMA and acquiring data from the currently selected smart card for CDMA network registration.

Step S310, determining that the network format of the currently selected smart card is GSM and sending a response failure signal to the handover control module 300.

In step S312, the switching control module 300 sends a selection signal to the switching circuit 400, so that the GSM modem module 100 establishes a connection with the currently selected smart card, that is, establishes a connection with the smart card selected in step S302.

Step S314, the GSM modem module 100 obtains corresponding data from the smart card connected thereto to initiate GSM network registration.

After the above process completes the network registration of the currently selected smart card, repeat step 304 to step S314 to perform network registration on the second smart card in the mobile phone 10.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention and are not intended to be limiting, and the present invention will be described in detail with reference to the preferred embodiments. Modifications or equivalents are made without departing from the spirit and scope of the invention.

10‧‧‧Mobile phones

100‧‧‧GSM modem module

200‧‧‧CDMA Modulation Module

300‧‧‧Switching control module

400‧‧‧Switching circuit

500‧‧‧first card slot

600‧‧‧Second card slot

401‧‧‧First communication interface

402‧‧‧Second communication interface

403‧‧‧ third communication interface

404‧‧‧fourth communication interface

406‧‧‧Switch wafer

405‧‧‧Control

S302‧‧‧ sends a selection signal to the switching circuit, so that the CDMA modem module selects and establishes a connection with the smart card in the first card slot or the second card slot

S304‧‧‧Send the selected CDMA card directory command to the currently selected smart card

S306‧‧‧Response successfully?

S308‧‧‧Get data from the currently selected smart card for CDMA network registration

S310‧‧‧Send a response failure signal to the switching control module

S312‧‧‧ sends a selection signal to the switching circuit to establish a connection between the GSM modem module and the currently selected smart card

S314‧‧‧Enquiry GSM network registration from the above-mentioned smart card connected with it

1 is a block diagram of a mobile phone of the present invention.

2 is a schematic diagram of a hardware interface of a switching circuit.

3 is a flow chart of a method for registering a smart card of the mobile phone of the present invention.

S302‧‧‧ sends a selection signal to the switching circuit, so that the CDMA modem module selects and establishes a connection with the smart card in the first card slot or the second card slot

S304‧‧‧Send the selected CDMA card directory command to the currently selected smart card

S306‧‧‧Response successfully?

S308‧‧‧Get data from the currently selected smart card for CDMA network registration

S310‧‧‧Send a response failure signal to the switching control module

S312‧‧‧ sends a selection signal to the switching circuit to establish a connection between the GSM modem module and the currently selected smart card

S314‧‧‧Enquiry GSM network registration from the above-mentioned smart card connected with it

Claims (7)

A mobile phone comprising a first card slot and a second card slot for installing a smart card supporting a GSM network standard and a smart card supporting a CDMA network standard, the mobile phone comprising a switching control module, a switching circuit, and a CDMA modulation Demodulation module and GSM modulation and demodulation module, wherein:
The switching control module is configured to send a selection signal to the switching circuit;
The switching circuit is configured to enable a CDMA modem module or a GSM modem module to select and establish a connection with one of the smart cards according to the selection signal sent by the switching control module;
The CDMA modem module is configured to send a CDMA card directory command to the currently selected smart card, and wait for a response of the currently selected smart card;
The CDMA modem module is further configured to: after successfully receiving the response of the currently selected smart card, read data from the smart card and initiate network registration of the CDMA network standard; otherwise, switch to the switch mode. The group sends a signal that the response failed;
The switching control module is further configured to: after successfully receiving the signal that the response fails, send a selection signal to the switching circuit, so that the GSM modem module establishes a connection with the currently selected smart card;
The GSM modem module is configured to read data from the smart card and initiate network registration of the GSM network standard after establishing a connection with the currently selected smart card. The mobile circuit of claim 1, wherein the switching circuit comprises a first communication interface, a second communication interface, a third communication interface, a fourth communication interface, a switch chip, and a control device, wherein:
One end of the first communication interface is connected to the GSM modulation and demodulation module, and the other end is connected to the switch chip;
One end of the second communication interface is connected to the CDMA modem module, and the other end is connected to the switch chip;
One end of the third communication interface is connected to the first card slot, and the other end is connected to the switch chip;
One end of the fourth communication interface is connected to the second card slot, and the other end is connected to the switch chip; and the control port is configured to receive the selection signal from the switching control module and input the selection signal to the switch chip. The mobile phone of claim 2, wherein the switch chip is configured to connect the first communication interface and the second communication interface with the third communication interface and the fourth communication interface according to the received selection signal, thereby implementing The GSM modem module and the CDMA modem module establish a connection with their corresponding smart cards. A smart card registration method for a mobile phone, comprising: a switching control module, a switching circuit, a CDMA modulation and demodulation module, and a GSM modulation and demodulation module, the method comprising:
(a) the switching control module sends a selection signal to the switching circuit, so that the CDMA modem module selects one of the smart cards and establishes a connection with the smart card;
(b) the CDMA modem module sends a command for selecting a CDMA card directory to the currently selected smart card;
(c) the CDMA modem module waits for the smart card to answer, if the response is successful, step (d) is performed, otherwise step (e) is performed;
(d) the CDMA modem module acquires data from the currently selected smart card for CDMA network registration, and then ends the registration process;
(e) the CDMA modem module sends a response failure signal to the handover control module;
(f) the switching control module sends a selection signal to the switching circuit, so that the GSM modem module establishes a connection with the currently selected smart card;
(g) The GSM modem module initiates a GSM network registration with the currently selected smart card, and then ends the registration process. The method for registering a smart card of a mobile phone according to item 4 of the patent application, the method further comprising the steps of:
(h) After completing the network registration of the currently selected smart card, repeat steps (b) through (g) to register the second smart card in the mobile phone. The method for registering a smart card of a mobile phone according to claim 4, wherein the switching circuit comprises a first communication interface, a second communication interface, a third communication interface, a fourth communication interface, a switch chip, and a control device, wherein:
One end of the first communication interface is connected to the GSM modulation and demodulation module, and the other end is connected to the switch chip;
One end of the second communication interface is connected to the CDMA modulation and demodulation module, and the other end is connected to the switch chip;
One end of the third communication interface is connected to the first card slot, and the other end is connected to the switch chip;
One end of the fourth communication interface is connected to the second card slot, and the other end is connected to the switch chip; and the control port is configured to receive the selection signal from the switching control module and input the selection signal to the switch chip. The smart card registration method of the mobile phone according to claim 6, wherein the switch chip is configured to use the first communication interface and the second communication interface with the third communication interface and the fourth communication interface according to the received selection signal. Connected to establish a connection between the GSM modem module and the CDMA modem module and its corresponding smart card.