WO2012122856A1

WO2012122856A1 - Method for mobile phone sim card failure recovery and mobile phone

Info

Publication number: WO2012122856A1
Application number: PCT/CN2012/000318
Authority: WO
Inventors: 顾建良; 顾瞻
Original assignee: 惠州Tcl移动通信有限公司
Priority date: 2011-03-15
Filing date: 2012-03-15
Publication date: 2012-09-20
Also published as: CN102098390A

Abstract

The present invention relates to the field of mobile terminals. Disclosed are a method for mobile phone SIM card failure recovery and a mobile phone. Because the present invention does not restart the entire mobile phone system when a data transmission error (SIM card failure) is encountered due to interference to the electrical signal of the mobile phone SIM card, but rather power off and then re-power up the SIM card, by quickly restarting the SIM card when a SIM card failure occurs, and accessing the card and connecting to a network, time is effectively saved and user convenience is provided when compared to restarting the mobile phone system, and the new function of restarting the SIM card is also added to the mobile phone.

Description

Manual Name: A mobile phone SIM card lost card recovery method and mobile phone

[ I ] Technical field

[2] The present invention relates to the field of mobile terminals, and in particular, to a mobile phone SIM card card recovery method and a mobile phone

[3] Background Art

[4] Nowadays, the design of mobile phones is becoming more and more complicated, PCB boards are getting thinner and thinner, and the wiring is becoming more and more demanding. The protection of the SIM card is also facing more and more severe challenges. In addition, many designs are designed to save space by using a higher-profile SIM card holder so that some devices can be placed under the card holder. However, because the card holder is relatively high, the relative distance from the ground plane of the mobile phone circuit board becomes far, and the signal that affects the SIM card after the antenna is radiated to the card seat causes the SIM card to be dropped, especially in the place where the signal of the mobile phone is relatively poor. When the power is transmitted, it is easy to radiate to the SIM card and the SIM card is lost.

[5] The traditional SIM card drop-off solution is that the user shuts down and then down. This process is the most thorough, but it takes a long time and is laborious. If an SIM card is lost in an emergency, it is easy to affect the user's communication, causing inconvenience to the user. .

[6] Therefore, the prior art has yet to be improved and developed.

[7] Summary of the invention

[8] The technical problem to be solved by the present invention is that, in view of the above-mentioned drawbacks of the prior art, a mobile phone SIM, a card-return card recovery method and a mobile phone are provided, which provide a communication card recovery communication after data error due to interference. The method effectively overcomes the problem that the mobile phone SIM card of the prior art is lost or the card is invalid, and can avoid the inconvenience caused by the user due to the restart, and provides convenience for the user.

[9] The technical solution adopted by the present invention to solve the technical problem is as follows:

[10] A method for recovering a SIM card from a mobile phone, wherein the method includes the following steps:

[I I] A. When the electrical signal of the SIM card is disturbed and the data transmission error occurs, turn off the power of the SIM card; and re-power the SIM card to re-connect the SIM card to the network.

[12] The mobile phone SIM card card loss recovery method, wherein the step A specifically includes:

[13] Al. When the electrical signal of the SIM card is disturbed and the data transmission error occurs, the control turns off the SIM card power supply.

Confirmation Power supply for the voltage foot;

[14] A2, re-power the SIM card, first add the power supply voltage of the SIM card to the i3V power supply, and give SI

The clock signal pin of the M card is added with a clock number of 3.25 MHz or 3.87 MHz;

[15] A3, pull the signal of the reset signal pin of the SIM card to a high level signal;

[16] A4. Receive the response reset signal returned by the SIM card, and inform the baseband chip that the SIM card has been reconnected.

[17] The method for recovering a SIM card from the mobile phone, wherein the step A4 is further included;

[18] A5. Read the information inside the SIM card and control the SIM card to reconnect with the network.

[19] The method for recovering a SIM card from the mobile phone, wherein the high level signal in the step A3 is a level 1

[20] ' A mobile phone, characterized in that it comprises:

[21] SIM card restart module, used to interrupt the data transmission when the SIM card's electrical signal is disturbed.

The power of the IM card is turned off; and the SIM card is powered on again, and the SIM card access is reconnected to the network.

[22] The mobile phone, wherein the SIM card restarting module further comprises:

[23] The first control unit is configured to control the power supply of the SIM card power supply pin when the electronic signal of the SIM card is disturbed to cause a data transmission error;

[24] The power-on unit is used to re-power the SIM card. First, add the 3V power supply to the SIM card's power supply pin; and add the frequency to the SIM card's clock signal pin to 3.25MHz or 3.87MHz. Cuckoo clock signal;

[25] The reset unit is configured to pull the signal of the reset signal pin of the SIM card to a high level signal;

[26] The receiving unit is configured to receive a response reset signal returned by the SM card, to notify the baseband chip that the SIM card has been reconnected.

[27] The mobile phone, wherein the SIM card restarting module further comprises:

[28] The reading and control unit is used to read the information inside the SIM card and control the SIM card to reconnect to the network. .

[29] The mobile phone, wherein the SIM card restarting module further comprises: the high level signal is a level

[30] The method for recovering the SIM card of the mobile phone provided by the present invention and the mobile phone, because the data transmission error (ie, the SIM card is lost) caused by the interference of the electrical signal of the SIM card of the mobile phone does not restart the entire mobile phone system, And choose to use the SIM card to power down, and then re-power the SIM card, by quickly dropping the SI when the card is dropped The M card is restarted, and the card access is connected to the network, which saves time compared with restarting the mobile phone system, provides convenience for the user, and adds a new function for restarting the SIM to the mobile phone. ' [31] BRIEF DESCRIPTION OF THE DRAWINGS

[321] FIG. 1 is a schematic structural diagram of a connection between a baseband of a mobile phone and a SIM card according to an embodiment of the present invention.

2 is a flow chart of a method for recovering a SIM card from a mobile phone according to an embodiment of the present invention.

3 is a timing chart of powering on a SIM card of a mobile phone according to an embodiment of the present invention.

4 is a block diagram showing the function of a mobile phone according to an embodiment of the present invention. >

FIG. 5 is a block diagram showing the internal structure of a SIM card restart module of a mobile phone according to an embodiment of the present invention.

[37] Specific implementation

The present invention is further described in detail below with reference to the accompanying drawings and embodiments. FIG. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[39] In a mobile phone SIM card card loss recovery method according to an embodiment of the present invention, as shown in FIG. 1 , the mobile phone is mainly composed of a baseband chip, a SIM card, and a card holder connected to the SIM card (not identified in FIG. 1). And so on.

[40] Among them, the main electrical signal connection between the SIM card and the baseband is:

[41] VSIM is the supply voltage of the SIM card; SIM-RST is the reset signal of the baseband chip to the SIM card.

. Reset to the SIM card.

[42] SIM— CLK: the clock signal pin for the SIM card for the baseband chip, for the working clock of the SIM card; SIM one

DATA: The data signal pin between the baseband chip and the SIM card.

[43] In a specific implementation, the method for recovering the SIM card of the mobile phone according to the present invention is to turn off the power of the SIM card when the electrical signal of the SIM card is disturbed, and the power of the SIM card is turned off; , Re-access the SIM card and connect to the network.

[44] In the specific implementation, as shown in Figure 2, the following steps are included:

[45] Step S2I.0. When the electrical signal of the SIM card is disturbed and the data transmission error occurs, control the power of the SIM card power supply pin to be turned off.

[46] For example, when the electronic signal of the SIM card interferes with the data transmission error (ie, the SIM card is lost), turn off the power of the SIM card. As shown in Figure 1, you can control the VSIM of the SIM card. Voltage) foot When the voltage is off, the SIM card is powered off. Since the SIM card's power supply itself is an LDO (Low Dropout Linear Regulator) output, the SIM card can be powered on and off by software directly with its ENABLE, DISABLE. See the following control parameter table for its implementation:

0x83010814 Driver Control and Charger Status PMIC_C0N5

[4 knife * ((volatile unsigned short *) 0x83010814) &=~0xl00; close VSIM.

[48] With the above program statement, the SIM card power can be turned off. Where volatile is the prefix modifier of the defined variable. When the value of a volatile declared variable is required, the system always reads the data from its memory again, even if the instruction in front of it just read the data from there. Unsigned short is a variable that defines a short word. It is 16 bits long and two bytes long on ARM.

[49] Then press the SIM card power-on sequence diagram as shown in Figure 3 to re-power the SIM card. The power-on sequence is as follows:

[50] Step S220, re-powering the SIM card, first adding 3V power to the SIM card power supply pin, and adding a clock signal with a frequency of 3.25MHz or 3.87MHz to the SIM card clock signal pin.

151} For example, as shown in FIG. 3, the VSIM1 signal is an indication signal for supplying power to the SIM card's power supply voltage VSIM. In FIG. 3, VSIM1 first gives 3V, that is, the baseband is first given to the SIM card through the SIM card's power supply voltage VSIM. Plus 3.0V (because the SIM card's VSIM is an LDO (Low Dropout Linear Regulator) output, and the output voltage can be configured, the output of the LDO is only configured to be 3.0V and output via software. Its VSIM LDO The ENABLE signal is the output of an LDO. Use the following program statement to power on the SIM card's supply voltage pin VSIM to power up the SIM card:

[52] ^((volatile unsigned short *) 0x83010814) 1= 0x100;Open VSIM

[53] Then add the chirp signal SIM_CLK1 with the frequency of 3.25MHz or 3.84MHz to the clock signal pin SIM_CLK of the SIM card, as shown in Figure 3 (because the chirp signal SIM_CLK1 is the SIM card interface of the baseband) Clock output, the frequency of the output is fixed. For the MTK platform (a mobile phone software platform), the frequency is 3.25MHz. For the QUALCOMM platform (a mobile phone software platform), the frequency is 3.84M Hzo and the clock output is also available. Is turned on and off by ENABLE (disabled), DISABLE (). * ((volatile unsigned short *) 0x810a0008) 1 = 0x5d2; Open SIM CLK specific control parameters refer to the following table:

SIM +0008h SIM Baud Rate Register SIM_BRR

Scl S'[MCI, K frequency

13/2 Mllz

13/4 Mliz

13 S MIl/

I tcraiiDCS I c duradon of elcmentsiv bine unit in unit of SIMCL

[56] In the above table: SIM Baud Rate Register is the baud rate registered for the SIM card;

[57] Set SIMCLK frequency setting SIM吋 clock frequency;

[58] ETU: basic time unit;

[59] Determines the duration of elementary time unit in unit of SIMCLK: Determine the SIM card clock

The primary time unit.

[60j Step S230: Pull the signal of the reset signal pin of the SIM card to a high level signal.

[61] As shown in Figure 3, the SIM-RST1 signal is a reset signal applied to the SIM card reset signal pin SIM-RST, and the reset signal SIM_RST1 is pulled high to a high level 1 signal (SIM-RST1 is also a baseband chip). A control signal of the SIM card interface can be pulled up and pulled low by software. The SIM card reset signal pin SIM_RST is just a GPIO port, which can be pulled up by writing GPIO).

[62] Step S240: Receive a response reset signal returned by the SIM card, and notify the baseband chip that the SIM card has been reconnected. Wait until the ATR (answer to reset) returned by the SIM card, after the sequence shown in Figure 3 is completed, the SIM card will automatically output the data SIM-DATA, which is the response reset signal ATR (answer to reset) for the SIM card. Informing the baseband chip that there is a SIM card on the SIM connector (seat) and proceeding to step S250

[63] Step S250: Read the information inside the SIM card and control the SIM card to reconnect with the network.

[64] For example, by reading the information inside the SIM card and reconnecting to the network (after the response to the reset signal (ATR), the operation of the SIM card can re-take the SIM card startup route of the software system, with the prior art The same way.)

[65] It can be seen from the above that the mobile phone SIM card card recovery method of the embodiment of the present invention controls the SIM restart process. The time is quite short, within 1 second, so you can quickly restart the SIM card when the SIM card is lost.

And the SIM card access and network connection, compared with the entire mobile phone system restart, effectively saves time and provides convenience for the user.

[66] The mobile phone SIM card card recovery method based on the above embodiment, the embodiment of the present invention further provides a mobile phone

As shown in FIG. 4, the mobile phone 400 mainly includes:

[67] The SIM card restarting module 410 is configured to turn off the power of the SIM card when the electrical signal of the SIM card is disturbed, causing the data transmission error to be turned off; and re-powering the SIM card to re-access the SIM card and the network. The connection is as described above. .

As shown in FIG. 5, the SIM card restart module 410 further includes:

[69] The first control unit 41 1 is configured to control to turn off the power of the SIM card power supply pin when the electrical signal of the SIM card is disturbed to cause a data transmission error, as described above.

[70] The power-on unit 412 is configured to re-power the SIM card, first adding a power of 3V to the power supply voltage of the SIM card; and adding a frequency of 3.25 MHz or 3.87 MHz to the clock signal pin of the SIM card. The cuckoo clock signal is as described above.

[71] The reset unit 413 is configured to pull the signal of the reset signal pin of the SIM card to a high level signal, and the high level signal is level 1, as described above.

[72] The receiving unit 414 is configured to receive a response reset signal returned by the SIM card, to notify the baseband chip that the SIM card has been reconnected, as described above.

[73] The reading and control unit 415 is configured to read information inside the SIM card and control the SIM card to reconnect with the network, as described above.

[74] In summary, the method for recovering the SIM card of the mobile phone provided by the present invention and the mobile phone, due to the interference of the electrical signal of the SIM card of the mobile phone, causes a data transmission error (ie, the SIM card is lost), and does not restart. The entire mobile phone system, and choose to use the SIM card to power down, and then re-power the SIM card, by quickly restarting the SIM card when the card is dropped, and accessing the card and the network connection, restarting the mobile phone system Compared, it saves time, provides convenience for users, and adds new functions that can restart the SIM.

[75] It should be understood that the application of the present invention is not limited to the above examples, and those skilled in the art can modify or change according to the above description, and all such improvements and transformations belong to the present invention. The scope of protection of the claims.

Claims

Claim

A method for recovering a SIM card from a mobile phone, characterized in that it comprises the steps of:

A. When the electrical signal of the SIM card is disturbed and the data transmission error occurs, turn off the power of the SIM card; and re-power the SIM card to re-connect the SIM card to the network.

The method for recovering a SIM card from the mobile phone according to claim 1, wherein the step A specifically includes:

Al. When the electrical signal of the SIM card is disturbed and the data transmission error occurs, the control turns off the power supply of the SIM card power supply pin;

A2, re-power the SIM card, first add 3V power to the SIM card's power supply pin, and add a chirp signal with a frequency of 3.25MHz or 3.87MHz to the SIM card's clock signal pin;

A3. Pull the signal of the reset signal pin of the SIM card to a high level signal;

A4. Receive the response reset signal returned by the SIM card, and notify the baseband chip that the SIM card has been reconnected.

The method for recovering a SIM card from the mobile phone according to claim 2, wherein after the step A4, the method further comprises:

A5. Reading the information inside the SIM card and controlling the SIM card to reconnect with the network. A mobile phone, comprising:

The SIM card restart module is used to turn off the power of the SIM card when the electrical signal of the SIM card is disturbed, causing the data transmission error to be turned off; and re-energizing the SIM card to re-access the SIM card to the network.

The mobile phone restarting module according to claim 5, wherein the SIM card restarting module further comprises:

a first control unit, configured to control to turn off the power supply of the SIM card power supply voltage pin when the electrical signal of the SIM card is disturbed to cause a data transmission error;

Power-on unit, used to re-power the SIM card, first give the SIM card power supply voltage New plus 3V power supply; and add frequency to the SIM card's cuckoo signal foot'

3.25MHz or 3.87MHz clock signal; "Reset unit, used to pull the signal of the reset signal pin of the SIM card to a high level signal receiving unit, for receiving the response reset signal returned by the SIM card, notifying the baseband chip SIM card Reconnected.

[Claim 6] The mobile phone according to claim 6, wherein the SIM card restarting module further comprises:

The reading and control unit is used to read the information inside the SIM card and control the SIM card to reconnect with the network.