CN102111917A - Device for recovering mobile terminal download access - Google Patents
Device for recovering mobile terminal download access Download PDFInfo
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- CN102111917A CN102111917A CN2011100668480A CN201110066848A CN102111917A CN 102111917 A CN102111917 A CN 102111917A CN 2011100668480 A CN2011100668480 A CN 2011100668480A CN 201110066848 A CN201110066848 A CN 201110066848A CN 102111917 A CN102111917 A CN 102111917A
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- portable terminal
- master chip
- download
- mobile terminal
- electric capacity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/725—Cordless telephones
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Sources (AREA)
- Mobile Radio Communication Systems (AREA)
- Telephone Function (AREA)
Abstract
The invention discloses a device for recovering a mobile terminal download access, which comprises a capacitor and a switch circuit. One end of the capacitor is connected with a pin of a master chip of a mobile terminal, and the other end of the capacitor is connected with the switch circuit. The switch circuit is connected in series between the master chip of the mobile terminal and a download interface. By the invention, the legal download of downloading updated software legally is realized, user experience is promoted, and a hacker is effectively prevented from illegally reading and downloading data of the mobile terminal, so the network locking is better realized.
Description
Technical field
The present invention relates to the safe practice of the communications field, particularly a kind of device that recovers portable terminal download path.
Background technology
At present, the operation mode of global mobile operator is: freely for the user provides portable terminal such as mobile phone, the user must abide by the agreement, and must use the network of operator in official hour.For the user who prevents the A of operator illegally enters in the network of the B of operator at the appointed time, the portable terminal that requires manufacturer to offer operator must be handled through the lock network technology, that is: a portable terminal can only use a fixing network that operator provides.
In initial lock network technology, operator has taked machine card integrated pattern, such as: the code division multiple access (CDMA that CHINAUNICOM uses, Code Division Multiple Access) operation way, for the portable terminal of cdma communication standard, because its card number is burnt in the portable terminal when dispatching from the factory, so, no longer need to use global subscriber identification module (USIM, Universal Subscriber Identity Module) card.Under this machine card integrated pattern, the card number of portable terminal bundles with corresponding operator, does not exist the user illegally to enter situation about using in the network of another operator.But, in this case,, just must so, cause inconvenience by operator's burning card number again to the user if the user need change card number.For this reason, a kind of lock network technology has been proposed, what adopt is the pattern of separation between machine and card, at this moment, need in portable terminal, increase lock net function, that is: the user uses portable terminal and the usim card that the A of operator provides free, and when the user used the usim card of the B of operator to be put into the portable terminal that the A of operator provides, portable terminal can be pointed out and be can not find usim card or usim card mistake.Wherein, separation between machine and card is meant: with the card number burning in usim card, like this, the user can keep original card number when changing portable terminal, same, and the user also can change the card number that portable terminal uses very easily, even the two cards of the machine of can accomplishing or many cards etc., to satisfy user's demand.
At present, existing lock network technology generally all uses the mode of software cryptography to carry out.But no matter how powerful the algorithm of software cryptography is, all can have leak, as long as leaky, will be cracked by the hacker.In order to address this problem, a technical scheme is proposed, Fig. 1 is the protective circuit schematic diagram of this technical scheme, as shown in Figure 1, this protective circuit schematic diagram comprises: first resistance 11, second resistance 12, triode 13 and fuse 14; The specific implementation of this technical scheme is: increase a fuse module between the master chip of mobile phone and download interface; that is: protective circuit shown in Figure 1; when mobile phone dispatches from the factory,, reach the purpose that disconnects download channel between master chip and the download interface with this with 14 fusing of the fuse in the fuse module.But, after mobile phone uses, during update software, at this moment,, then can't carry out the renewal of software, and then influence user's use if desired because the download channel between master chip and the download interface disconnects.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of device that portable terminal is downloaded path that recovers, after can disconnecting at the download path of portable terminal, and legal down loading updating software, and then promote user experience.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of device that portable terminal is downloaded path that recovers, comprising: the master chip of portable terminal, and download interface, this device also comprises: electric capacity and switching circuit; Wherein,
One end of electric capacity is connected with the pin of the master chip of portable terminal, and the other end is connected with switching circuit;
Switching circuit is serially connected between the master chip and download interface of portable terminal.
In the such scheme, described capacitance discharges duration is less than the required duration of down loading updating software.
In the such scheme, described switching circuit comprises: switch; Described switch is: field-effect transistor or triode or analog switch or relay.
Recovery portable terminal provided by the invention is downloaded the device of path, comprising: electric capacity and switching circuit; One end of electric capacity is connected with the pin of the master chip of portable terminal, and the other end is connected with switching circuit; Switching circuit is serially connected between master chip and the download interface, and when the download path of portable terminal disconnected the back and needs update software, the master chip of portable terminal obtained from external equipment and recovers instruction; The master chip of portable terminal is according to recovering instruction, and the control switch circuit recovers being connected between master chip and the download interface, by the connection down loading updating software that recovers, so, has realized the purpose of legal down loading updating software, has promoted user experience.
In addition, after update software is downloaded and is finished, the master chip of portable terminal is according to open command, to the control interface output control signal that is connected with switching circuit, being connected between the master chip that the trigger switch circuit disconnects portable terminal and the download interface, download path thereby disconnect, so, prevented that further the hacker from illegally reading, reaching data download portable terminal, reached the purpose of lock net better.
Description of drawings
Fig. 1 is the schematic diagram of art protective circuits;
Fig. 2 is the protective circuit of the embodiment of the invention and the schematic diagram that recovers the circuit of portable terminal download.
Embodiment
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
The present invention recovers the device that portable terminal is downloaded path, and as shown in Figure 2, this device comprises: the master chip 21 of portable terminal, download interface 22, electric capacity 23 and switching circuit 24; Wherein,
One end of electric capacity 23 is connected with the pin of the master chip 21 of portable terminal, and the other end is connected with switching circuit 24;
Wherein, the discharge duration of electric capacity 23 recovers the required duration of instruction greater than downloading, and is far smaller than the required duration of down loading updating software, so, has avoided unauthorized person to carry out illegal download in the capacitance discharges duration.
Described switching circuit 24 comprises resistance and switch, wherein, one end of resistance is connected with the control signal output pin of the master chip of portable terminal, the other end described switch that is connected with the control end of switch can be: field-effect transistor (FET, Field Effect Transistor) or triode or analog switch or relay etc.
Recovery portable terminal provided by the invention is downloaded the device of path, when the download path of portable terminal disconnects the back and needs update software, after portable terminal adds battery, the pin of the master chip of portable terminal has voltage output immediately, cause the electric capacity charging, after finishing, charging begins discharge, being connected between the master chip that the trigger switch circuit is connected portable terminal and the download interface, make that downloading path is communicated with, the master chip of portable terminal is downloaded from external equipment and is recovered instruction afterwards, thereby obtains to recover instruction;
The master chip of portable terminal is according to recovering instruction, and to the control interface output control signal that is connected with switching circuit, being connected between the master chip that the trigger switch circuit is connected portable terminal and the download interface is by the connection down loading updating software of recovery;
After having downloaded update software, the master chip of portable terminal is according to open command, to the control interface that is connected with switching circuit output control signal, being connected between the master chip that disconnects portable terminal with the trigger switch circuit and the download interface, thus disconnect the download path of portable terminal.
Wherein, described external equipment specifically can be a personal computer (PC, Personal Computer) etc.
Here, though the power supply that the master chip of portable terminal provides makes electric capacity charging, begin discharge after charging is finished, being connected between the master chip that the trigger switch circuit is connected portable terminal and the download interface makes that downloading path is communicated with.But, the time of downloading the path connection can be shorter, be not enough to down loading updating software, therefore, before down loading updating software, need utilize to recover to instruct and to recover the download circuit connection earlier, thereby make the download path be in connected state, that is: the path between the master chip of download interface and portable terminal is communicated with, and carries out the download of update software after the connection; Wherein, recover instruction and have only the manufacturer of portable terminal and operator to have, so, can further avoid illegal download, the update software that portable terminal is downloaded comprises open command.
During down loading updating software, portable terminal is in the state of shutdown, after portable terminal adds battery, the master chip of portable terminal is in running order, that is: start the BOOT district, carry out corresponding configuration operation, recover instruction in order to prevent that unauthorized person from obtaining, the master chip of portable terminal need download to the BOOT district with recovering instruction, thereby obtains to recover instruction.Wherein, it is identical that the master chip of portable terminal carries out the concrete processing procedure and the existing processing procedure of corresponding configuration operation, repeats no more here.
When practical application, the charging duration and the discharge duration of electric capacity can be known according to the specification of electric capacity in the manufacturer of portable terminal and operator, and in view of the above, when the master chip of control portable terminal is downloaded is recovered instruction.
The protective circuit that Fig. 2 provides for the embodiment of the invention and recover the schematic diagram of the circuit that portable terminal downloads, as shown in Figure 2, the realization of protective circuit belongs to prior art, and protective circuit is by first resistance 11, second resistance 12, triode 13, and fuse 14 is formed; Wherein, fuse 14 is provided with blow-out current value.
As shown in Figure 2, one end of electric capacity 23 is connected with VIO, the other end of electric capacity 23 is connected with an end of the 3rd resistance 241 and the 4th resistance 242 respectively, and the tie point of electric capacity 23, the 3rd resistance 241 and the 4th resistance 242 is connected with RXEN, the other end of the 3rd resistance 241 is connected with the grid of NMOS pipe 243, the other end ground connection of the 4th resistance 242, the source electrode of NMOS pipe 243 is connected with some A, and the drain electrode of NMOS pipe 243 is connected with some B; Wherein, RXEN is used to control the switch of the source electrode of NMOS pipe 243 to drain path, particularly, when RXEN output logic high level, the source electrode of NMOS pipe 243 is opened to drain path, when RXEN output logic low level, the source electrode of NMOS pipe 243 is closed to drain path.
Here, be to be understood that: when switch be triode, during except that other field-effect transistor, analog switch or relay the NMOS pipe etc., the concrete conventional techniques means that belong to those skilled in the art that are connected of switch and each parts.
The operation principle of the circuit that present embodiment provides is described in detail in detail below.
In order to prevent hacker's reading of data from portable terminal, and the lock netting index that will crack is according to downloading in the portable terminal, after the portable terminal production test finishes, and can blow out fuse 14.Here, the concrete processing procedure of blow out fuse 14 is a prior art, repeats no more here.
After portable terminal was sold, when needs update software or maintenance the time need be downloaded software, the recovery portable terminal of forming by electric capacity 23 and switching circuit 24 was downloaded the device of path, carries out the download of update software.
Suppose to preserve among the PC recovery command M, recover command M and be used to make RXEN output logic high level, that is: be communicated with and download path.
The detailed process that the recovery command M will be downloaded the path connection is: after portable terminal adds battery, VIO has voltage output immediately, cause electric capacity 23 charging earlier, charging begins discharge after finishing, and being connected between the master chip 21 that trigger switch circuit 24 is connected portable terminals and the download interface 22 makes and download the path connection, recover command M afterwards from PC, through download interface 22, NMOS pipe 243, arrive the master chip 21 of portable terminal successively, pass to again in the BOOT district of portable terminal; At this moment, because being communicated with employed power supply, the download path provides by electric capacity 23, be T1 the discharge time of supposing electric capacity 23, then require T1 to recover the needed duration of command M greater than downloading, and, in the T1 duration, carry out the download of update software for fear of unauthorized person, require T1 to be far smaller than the needed duration of down loading updating software simultaneously.When practical application, the duration that download to recover instruction was about for 5 seconds, so, require the discharge duration of electric capacity 23 must be greater than 5 seconds, in view of the above, the electric capacity that can select electric capacity 23 is 47 μ F, at this moment, the discharge duration of electric capacity 23 was about for 10 seconds.
After the recovery command M is downloaded to portable terminal, RXEN is the output logic high level always, make the source electrode of NMOS pipe 243 open to drain path, thereby make the download path be in connected state always, just can carry out from PC, carrying out the download of update software afterwards, after the software download of upgrading is finished, the master chip 21 of portable terminal is according to the open command in the software that is included in renewal, again RXEN is placed logic low state, make the source electrode of NMOS pipe 243 close, thereby disconnect the download path of portable terminal to drain path.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (3)
1. one kind is recovered the device that portable terminal is downloaded path, comprising: the master chip of portable terminal, and download interface is characterized in that this device also comprises: electric capacity and switching circuit; Wherein,
One end of electric capacity is connected with the pin of the master chip of portable terminal, and the other end is connected with switching circuit;
Switching circuit is serially connected between the master chip and download interface of portable terminal.
2. device according to claim 1 is characterized in that, described capacitance discharges duration is less than the required duration of down loading updating software.
3. device according to claim 2 is characterized in that described switching circuit comprises: switch; Described switch is: field-effect transistor or triode or analog switch or relay.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110066848.0A CN102111917B (en) | 2011-03-18 | 2011-03-18 | Device for recovering mobile terminal download access |
| PCT/CN2011/074112 WO2012126197A1 (en) | 2011-03-18 | 2011-05-16 | Device for restoring download path of mobile treminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110066848.0A CN102111917B (en) | 2011-03-18 | 2011-03-18 | Device for recovering mobile terminal download access |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102111917A true CN102111917A (en) | 2011-06-29 |
| CN102111917B CN102111917B (en) | 2014-03-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110066848.0A Active CN102111917B (en) | 2011-03-18 | 2011-03-18 | Device for recovering mobile terminal download access |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102111917B (en) |
| WO (1) | WO2012126197A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102300199A (en) * | 2011-07-04 | 2011-12-28 | 中兴通讯股份有限公司 | Method for burning out fuse wire and device |
| CN108711440A (en) * | 2018-08-02 | 2018-10-26 | 珠海格力电器股份有限公司 | Write-protect circuit and Write-protection method, write protector and electrical equipment |
| CN110263590A (en) * | 2019-06-30 | 2019-09-20 | 潍柴动力股份有限公司 | A kind of vehicle-mounted ECU and its safety protecting method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114301486B (en) * | 2021-03-22 | 2024-06-04 | 海信集团控股股份有限公司 | Debugging device and method for WiFi module |
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| JPH0433678A (en) * | 1990-05-30 | 1992-02-05 | Ace Denken:Kk | Game machine island |
| CN2829017Y (en) * | 2005-09-28 | 2006-10-18 | 上海华虹集成电路有限责任公司 | Circuit for preventing FIB assaulting blovo-out fuse |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09233678A (en) * | 1996-02-20 | 1997-09-05 | Mitsubishi Electric Corp | Power supply device |
| CN101950332B (en) * | 2010-07-12 | 2012-08-29 | 大唐微电子技术有限公司 | Chip protecting method and system |
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2011
- 2011-03-18 CN CN201110066848.0A patent/CN102111917B/en active Active
- 2011-05-16 WO PCT/CN2011/074112 patent/WO2012126197A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0433678A (en) * | 1990-05-30 | 1992-02-05 | Ace Denken:Kk | Game machine island |
| CN2829017Y (en) * | 2005-09-28 | 2006-10-18 | 上海华虹集成电路有限责任公司 | Circuit for preventing FIB assaulting blovo-out fuse |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102300199A (en) * | 2011-07-04 | 2011-12-28 | 中兴通讯股份有限公司 | Method for burning out fuse wire and device |
| CN108711440A (en) * | 2018-08-02 | 2018-10-26 | 珠海格力电器股份有限公司 | Write-protect circuit and Write-protection method, write protector and electrical equipment |
| CN108711440B (en) * | 2018-08-02 | 2024-04-30 | 珠海格力电器股份有限公司 | Write protection circuit, write protection method, write protection device and electrical equipment |
| CN110263590A (en) * | 2019-06-30 | 2019-09-20 | 潍柴动力股份有限公司 | A kind of vehicle-mounted ECU and its safety protecting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102111917B (en) | 2014-03-19 |
| WO2012126197A1 (en) | 2012-09-27 |
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