CN101951434B - The guard method of the disposable data of a kind of mobile phone - Google Patents
The guard method of the disposable data of a kind of mobile phone Download PDFInfo
- Publication number
- CN101951434B CN101951434B CN201010271369.8A CN201010271369A CN101951434B CN 101951434 B CN101951434 B CN 101951434B CN 201010271369 A CN201010271369 A CN 201010271369A CN 101951434 B CN101951434 B CN 101951434B
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- mobile phone
- disposable data
- write
- flash
- disposable
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Abstract
The invention provides the guard method of the disposable data of a kind of mobile phone; the method is according to the hardware protection function of current NORFlash; the protecting control pin of NOR Flash drags down by mobile phone acquiescence; and in product line production run; by force this protecting control pin of NOR Flash is drawn high with the thimble produced on fixture; so that monomer mobile phone is correlated with completing of disposable data write activity therewith, and is verified the correctness confirming that disposable data write by retaking of a year or grade.From hardware design, the present invention ensure that mobile phone is in normal use procedure, the region of disposable data is not destroyed, and improves the reliability of mobile phone.
Description
Technical field
The present invention relates to the guard method of the disposable data of a kind of mobile phone.
Background technology
Along with the deep development of mobile communication system, the scale that mobile phone is produced is just at expanding day, because the hardware of different mobile phone and structural personal feature are not quite similar, thus need to carry out for different mobile phones the extraction of monomer related data in the production run of mobile phone, and this part data is all disposable to be written into and prolonged curing in mobile phone.In addition, it is that non-mobile phone monomer is relevant and changeless that cell phone system also has some parameters, is also that requirement is by prolonged curing in mobile phone after one-time write.These two kinds of data and so-called disposable data.At present, no matter be in the production, operation and maintenance process of mobile phone, the regular meeting of disposable data is by abnormal destruction, serious words, even can cause crashing, can not start shooting, the mortality problem such as can not to make a phone call, for Cell Phone Design and manufacturing enterprise bring huge loss, cause the significant wastage of social resources.
Meanwhile; NOR nonvolatile memory (i.e. NOR Flash) conventional in the market has a kind of hardware protection function; this function makes it at its write-protect pin (WP; write protect) when being dragged down, there is the region of fixed position not to be wiped free of or to write.But the use due to this function relates to all many-sides of production, design, is not therefore widely used at present.
Summary of the invention
For solving the problem, the invention provides the guard method of the disposable data of a kind of mobile phone, the method is particularly useful for the NOR Flash mobile phone with writing protection function.
The present invention is according to the hardware protection function of current NOR Flash, and the write-protect pin (WP, write protect) of NOR Flash drags down by mobile phone acquiescence, makes mobile phone cannot operate relevant protected area in normal use procedure.And in process of production, by force this write-protect pin is drawn high, to facilitate disposable protected data of being correlated with to write in mobile phone, and test with the disposable data of the mode of retaking of a year or grade to write, to confirm correctly completing of write activity.
The disposable data guard method of mobile phone provided by the present invention, specifically comprises the following steps:
Step one: in hardware principle G-Design, receives the ground of cell phone system by a stake resistance by the write-protect pin of NOR Flash acquiescence;
Step 2: in PCB design, for this write-protect pin draws correlative measurement pilot;
Step 3: in software system design, extracts disposable data;
Step 4: in product line production run, by force the write-protect pin of NOR Flash is drawn high;
Disposable data required for cell phone system are transferred on mobile phone by step 5: utilize computer to communicate with the UART of mobile phone from computer;
Step 6: utilize computer to communicate with the UART of mobile phone, the disposable data in cell phone system are gone out from the protected area retaking of a year or grade NOR Flash, and compared with the disposable data of the mobile phone that computer in step 5 is preserved, if compare difference, then point out write error, and turn back to step 5; If compare identical, then process terminates.
Method provided by the present invention can carry out the product line one-time write of disposable data easily, and ensure that in the normal use procedure of mobile phone, the region of preserving disposable data is not destroyed from hardware design, substantially increases the reliability of mobile phone.
Accompanying drawing explanation
Fig. 1 is NOR flash pin connection diagram of the present invention.
Fig. 2 is the production operation connection diagram of the inventive method.
Fig. 3 is the process flow diagram of the inventive method.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described, but should not limit the scope of the invention with this.
Refer to Fig. 1; according to the hardware protection function of current NOR Flash; the write-protect pin WP (write protect) of Flash is directly received the ground of mobile phone by mobile phone hardware design acquiescence by a stake resistance R; and consider that write-protect pin draws correlative measurement pilot for this reason at PCB (the Printed Circuit Board) initial stage of making; and in product line production run; by force this write-protect pin of NOR Flash is drawn high with the thimble produced on fixture, to be correlated with the write activity of disposable data to complete monomer mobile phone therewith.
The inventive method is mutual by serial ports between computer and mobile phone, by the NOR flash of disposable data write mobile phone.Fig. 2 is the production operation connection diagram of the inventive method.As shown in the figure, computer utilizes a common Serial Port Line to be connected with mobile phone hardware by UART Universal Asynchronous Receiver Transmitter UART (UniversalAsynchronous Receiver/Transmitter), mobile phone then contacts connected in the mode of thimble with production fixture, D.C. regulated power supply by power lead with produce fixture and be connected to and produce fixture and power.Wherein, described thimble and general conducting metal draw point.
Fig. 3 is the process flow diagram of the inventive method.The guard method of the disposable data of a kind of mobile phone provided by the present invention, concrete steps are as follows:
Step one: in hardware principle G-Design, receives the ground of cell phone system by a stake resistance by the write-protect pin of NOR Flash acquiescence.
Wherein, described stake resistance is preferably 3.3k ohm.
Step 2: in PCB design, for this write-protect pin draws correlative measurement pilot.
Step 3: in software system design, extracts disposable data.
The method of the disposable data of described refinement is: do unified arrangement to the parameter of cell phone system, not need after one-time write mobile phone to be revised as foundation, extract disposable data.
Step 4: in product line production run, by force the write-protect pin of NOR Flash is drawn high.
Wherein: mobile phone is fixed on and produces on fixture, by addition thimble on production fixture, by force the write-protect pin of NOR flash is drawn high the method that the write-protect pin of NOR flash is drawn high.Wherein, this thimble is preferably the thimble of 3 volts.
Disposable data required for cell phone system are transferred on mobile phone by step 5: utilize computer to communicate with the UART of mobile phone from computer.
Step 6: utilize computer to communicate with the UART of mobile phone, the disposable data in cell phone system are gone out from the protected area retaking of a year or grade NOR Flash, and compared with the disposable data of the mobile phone that computer in step 5 is preserved, if compare difference, then point out write error, and turn back to step 5; If compare identical, then process terminates.
Be only preferred embodiment of the present invention in sum, be not used for limiting practical range of the present invention.Namely all equivalences done according to the content of the present patent application the scope of the claims change and modify, and all should be technology category of the present invention.
Claims (5)
1. a guard method for the disposable data of mobile phone, the method comprises the following steps:
Step one: in hardware principle G-Design, receives the ground of cell phone system by a stake resistance by the write-protect pin of NOR Flash acquiescence;
Step 2: in PCB design, for this write-protect pin draws correlative measurement pilot;
Step 3: in software system design, extracts disposable data;
Step 4: in product line production run, by force the write-protect pin of NOR Flash is drawn high;
Disposable data required for cell phone system are transferred on mobile phone by step 5: utilize computer to communicate with the UART of mobile phone from computer;
Step 6: utilize computer to communicate with the UART of mobile phone, the disposable data in cell phone system are gone out from the protected area retaking of a year or grade NOR Flash, and compared with the disposable data of the mobile phone that computer in step 5 is preserved, if compare difference, then point out write error, and turn back to step 5; If compare identical, then process terminates;
In described step 4, be: mobile phone is fixed on and produces on fixture, by addition thimble on production fixture, by force the write-protect pin of NOR flash is drawn high the method that the write-protect pin of NOR flash is drawn high.
2. the guard method of the disposable data of mobile phone as claimed in claim 1, it is characterized in that, in described step one, described stake resistance is 3.3k ohm.
3. the guard method of the disposable data of mobile phone as claimed in claim 1 or 2; it is characterized in that, in step 3, the method for the disposable data of described refinement is: do unified arrangement to the parameter of cell phone system; not need after one-time write mobile phone to be revised as foundation, extract disposable data.
4. the guard method of the disposable data of mobile phone as claimed in claim 1, it is characterized in that, described thimble is the thimble of 3 volts.
5. the guard method of the disposable data of mobile phone as claimed in claim 3, it is characterized in that, described thimble is the thimble of 3 volts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010271369.8A CN101951434B (en) | 2010-08-31 | 2010-08-31 | The guard method of the disposable data of a kind of mobile phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010271369.8A CN101951434B (en) | 2010-08-31 | 2010-08-31 | The guard method of the disposable data of a kind of mobile phone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101951434A CN101951434A (en) | 2011-01-19 |
| CN101951434B true CN101951434B (en) | 2015-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010271369.8A Expired - Fee Related CN101951434B (en) | 2010-08-31 | 2010-08-31 | The guard method of the disposable data of a kind of mobile phone |
Country Status (1)
| Country | Link |
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| CN (1) | CN101951434B (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100505084C (en) * | 2007-06-18 | 2009-06-24 | 深圳市兆驰股份有限公司 | Software updating method for electronic product with FLASH |
| CN101237653A (en) * | 2008-03-05 | 2008-08-06 | 嘉兴闻泰通讯科技有限公司 | A realization method for compatible Nor Flash erasing on mobile phone |
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2010
- 2010-08-31 CN CN201010271369.8A patent/CN101951434B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101951434A (en) | 2011-01-19 |
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