CN102567691A - Method for preventing pirating by optical modules - Google Patents
Method for preventing pirating by optical modules Download PDFInfo
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- CN102567691A CN102567691A CN2012100099821A CN201210009982A CN102567691A CN 102567691 A CN102567691 A CN 102567691A CN 2012100099821 A CN2012100099821 A CN 2012100099821A CN 201210009982 A CN201210009982 A CN 201210009982A CN 102567691 A CN102567691 A CN 102567691A
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Abstract
The invention relates to a method for preventing pirating by optical modules. The method includes: setting set values corresponding to the optical modules one by one as secret keys which are separated from products with optical modules and used for preventing pirating, and writing the set values into the optical modules by system vendors utilizing the optical modules after the system vendors obtain the optical modules and the set values. Accordingly, even if the set values are stolen, optical modules of piratical products are not matched with the set values and cannot work normally, and vendors of the optical modules or the system vendors can find out the problems immediately, so that hardware pirating can be prevented, and production and sales of the authorized optical modules of the vendors can be guaranteed.
Description
Technical field
The present invention relates to optical communication field, relate in particular to a kind of method that prevents the copy right piracy of optical module.
Background technology
Optical communication technique has become present communication network proven technique, has obtained using widely.Particularly under the optical fiber that government and operator widely popularize was registered one's residence engineering, fiber optic network had been connected to each family common people family gradually.So optical module is as a kind of optical communication network infrastructure, and is also increasing to the demand of optical module, often supply falls short of demand for the product of the big factory of a line.
Some little manufacturers are in order to obtain unlawful interests, and often the hit product to the big factory of a line carries out the hardware plagiarism, copy right piracies such as firmware simulation, and then again that these are counterfeit hit product is rendered in the market circulation and is gone.A plurality of problems have been brought thus.All there is the strict quality monitoring system of a cover in big factory; Product all passes through tight reliability design and quality inspection test, meet the safety and the specifications of quality, and those pirate manufacturers is from cost consideration; The quality monitoring system is seldom arranged; Materials such as the electronic devices and components of its use, pcb board often also all are the most cheap goods of inferior quality, and production and processing environment not will consider the detailed problem of electrostatic sensitive of components and parts and so on yet, and such product does not have the assurance of quality and safety fully.The product of piracy is used in the communication system, gently then caused various error codes, communication is broken off often; Even more serious is causes the paralysis of whole communication network even property life that the circuit board short-circuit fire causes the user impaired.The intellecture property of big factory has directly been invaded in the sale of pirate product simultaneously, and its hit product is impacted, and sales volume descends; After quality security problem occurring, can cause negative effect to hit product again, further the product sales volume impacted.
Optical module manufacturer hopes copyrighted product by pirate product impact, and system manufacturer also hopes to have bought the certified products of quality assurance, has carried out encryption so optical module is mostly piled by present optical module manufacturer.Existing optical module encryption technology is that the inside EEPROM to optical module carries out encryption; System manufacturer obtains manufacturer's information according to the information among the EEPROM, the optical module password is perhaps contrasted byte confirm, it is the same that password perhaps contrasts byte; Be expressed as this factory's product, can normally use.
But fixed password and contrast byte are easy to cracked by pirate manufacturer, even the dynamic password after the upgrading also is easy to be cracked algorithm and is cracked once more, calculation device common on the network is a clear proof.Therefore, the pirate still wildness of ten minutes on the optical module market that the existing method of use is encrypted, existing encryption method fails to accomplish the purpose that prevents the piracy of optical module.
Summary of the invention
To the problems referred to above, the object of the present invention is to provide a kind of hardware to prevent method to the piracy of optical module through optical module.
The object of the invention is accomplished through following technical scheme: a kind of optical module method for preventing piracy may further comprise the steps:
S1: the debugging of optical module manufacturer obtains the settings of optical module;
S2: optical module manufacturer will not write the optical module of settings and will issue system manufacturer;
S3: system manufacturer obtains the settings of optical module from optical module manufacturer;
S4: system manufacturer writes optical module with the settings of optical module.
Further, said settings comprises the APCset value.Optical module must the APCset value could operate as normal, so utilize the worthwhile password of APCset to have good security.
Further, said settings comprises the MODset value.Optical module must the MODset value could operate as normal, so utilize the worthwhile password of MODset to have good security
Further, said step S2 comprises that also optical module manufacturer is written to the series number of each optical module among the EEPROM of optical module, and settings, series number, the type information of this optical module deposited in the database.Different optical modules number are mapped with different series, and combine other information to deposit in the database, make things convenient for the management of large-scale production, and after finding piracy, be easy to find corresponding piracy sources.
Further, said step S3 comprises that also system manufacturer utilizes the internet to obtain the information of different optical modules, and step S4 comprises that also system manufacturer writes settings in the corresponding optical module according to series number.System manufacturer is found out corresponding optical module according to series number, then settings is write, and can manage large batch of optical module in batch, adapts to large-scale usage behavior.
Beneficial effect of the present invention is: the present invention will prevent pirate password with optical module settings conduct one to one; Separate with the optical module product; After the system manufacturer of using optical module obtained optical module and settings respectively, system manufacturer writes optical module with settings made the optical module can operate as normal; Even settings is stolen like this; But still do not agree with the optical module of piracy; Pirate optical module can't operate as normal; Optical module manufacturer or system manufacturer can immediately be pinpointed the problems, and can play thus with hardware and prevent pirate effect, guarantee the production and sales of the legal optical module of optical module manufacturer.
Description of drawings
Fig. 1 is the flow chart of steps of the specific embodiment of the invention;
Fig. 2 is the optical module circuit diagram of making a start.
Embodiment
Disclosed all characteristics in this instructions, or the step in disclosed all methods or the process except mutually exclusive characteristic and/or the step, all can make up by any way.
Disclosed arbitrary characteristic in this instructions (comprising any claim, summary and accompanying drawing) is only if special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, only if special narration, each characteristic is an example in a series of equivalences or the similar characteristics.The description to alternative features is to being equal to the description of technical characterictic, must not being regarded as the donation to the public in this instructions simultaneously.
Term in this instructions (comprising any claim, summary and accompanying drawing) like no specified otherwise, all is defined as the peculiar implication in this area if having the peculiar implication of general sense and this area simultaneously.
As shown in Figure 1, be optical module method for preventing piracy of the present invention.Because optical module need write some settings could operate as normal, so optical module manufacturer do not write these settings when producing, but these settings are issued system manufacturer as " hardware encryption ", writes optical module by system manufacturer.Key step has:
S1: the debugging of optical module manufacturer obtains the settings of optical module;
S2: optical module manufacturer is written to the series number of each optical module among the EEPROM of optical module, and settings, series number, the type information of this optical module deposited in the database; Optical module manufacturer will not write the optical module of settings and will issue system manufacturer;
S3: system manufacturer utilizes modes such as internet or surface mail or data disks to obtain the optical module information of the settings that comprised optical module, series number, model etc. from optical module manufacturer;
S4: system manufacturer writes optical module according to series number with the settings of optical module.
Like this different optical modules number are mapped with different series, and combine other information to deposit in the database, make things convenient for the management of optical module manufacturer large-scale production, and after finding piracy, be easy to find corresponding piracy sources.And system manufacturer is found out corresponding optical module according to series number, then settings is write, and can in batch large batch of optical module be managed, and adapts to large-scale usage behavior.
As shown in Figure 2, be the typical optical module circuit diagram of making a start.LD (Laser Diode, laser semiconductor) expression be that to be used for electrical signal conversion be the laser instrument of light signal, MPD (Monitor Photo-Diode, monitor photo-diode) expression be the monitor photo-diode that is used for the luminous situation of monitoring laser.Communication system requires the AOP (Average Optical Power, average luminescence power) of optical module, ER parameters such as (Extinction Ratio, extinction ratios) as far as possible one than close limit in.With GPON ONU optical module is example, requires average light power AOP that optical module dispatches from the factory between 1.5 ~ 5dBm, differs 3.5dB.And the area requirement of extinction ratio ER is between 10 ~ 15dB.AOP is closed-loop control, and utilization is monitored feedback to the size of the photoelectric response electric current of MPD, and ER then is open loop control.Wherein AOP can be through formula 1:
calculates; ER can be through formula 2:
calculates.The P1 here refers to the luminous power of LD when sending out the logical one light signal, and P0 refers to the luminous power of LD when sending out the logical zero light signal.Because the luminous power of LD is by modulating current Imod, bias current Ibias, threshold current Ith and luminescence efficiency SE (Slope Efficiency; The luminescence efficiency of semiconductor laser; The mw/mA of unit) decision, so P1 and P0 can be through formula 3:
and formula 4:
calculates.
Because MPD receives the luminous irradiation back of LD to produce proportional response current to reach purpose that LD is monitored.Therefore; According to formula 5:
; Wherein
representes the photoelectric transformation efficiency of MPD; Impd represent the to flow through response current of MPD, the average luminescence power AOP of LD should also can be calculated by response current and the luminous power of MPD.So; Because AOP is had area requirement and relative fixed; And but the photoelectric transformation efficiency difference of each MPD is very big, then should different qualification settings be arranged according to different
to Impd.Optical module manufacturer is provided with generally all according to formula 6:Impd=1/2* (Vref-Vdac1)/Rapcset Impd; Wherein Vref is a reference voltage; Vdac1 is the voltage of digital to analog converter, Rapcset be closed-loop control the MPD response current resistance value is set; In general, the device of use has been fixed, and then Vref is specific, if such as the laser driving chip MAX3738 that uses the U.S.'s U.S. letter chip companies, then its Vref is 1.25V; Rapcset in like manner, when type was identical, its resistance also was identical; Therefore; Have only Vdac1 to change according to
; So if if AOP meets scope; Then the APCset value as the Vdac1 value should be by after writing EEPROM after commissioning staff's debugging; Send to digital to analog converter by EEPROM, optical module is operated in the normal AOP scope.To sum up, the APCset value as one can with the settings of hardware relative separation, can be good at serving as " hardware encryption ".
Simultaneously, in order to control the size of LD extinction ratio ER, need the size of control modulating current Imod, bias current Ibias, threshold current Ith to guarantee that ER satisfies area requirement.Owing to use device fixing then bias current Ibias and threshold current Ith relative fixed, the therefore main purpose that adopts control modulating current Imod size to reach control ER.According to formula 7:Imod=(Vref-Vdac2) * 268/Rmodset, wherein Rmodset is that modulating current is provided with resistance value, and is relatively-stationary with the type that uses device; Have only Vdac2 to regulate and control easily, therefore, also should be as the MODset value of Vdac2 value by writing after commissioning staff's debugging.So the MODset value also can be good at serving as " hardware encryption ".
Certainly; Other parts of optical module circuit also should satisfy the requirement of work; Repercussion bias voltage such as the avalanche photodide of receiving end; Need analog to digital converter or digital regulation resistance to cooperate the boost booster circuit that the reverse biased of avalanche photodide is provided with, guarantee that avalanche photodide is operated under enough gains, so the settings here also can be used as " hardware encryption " when being necessary.
In the optical module circuit of the present invention, analog to digital converter can use the built-in analog to digital converter of Aduc702x Series MCU of U.S. ADI semiconductor company, also can use the built-in analog to digital converter of DS4830 of U.S. MAXIM semiconductor company; Digital regulation resistance can use the DS1856 of U.S. MAXIM semiconductor company, perhaps the CAT5120 of ONNN company; The laser driver chip except the MAX3738 of MAXIM semiconductor company, can also use the NT22L33 of Gennum semiconductor company, the conventional chips such as UX2228 of the excellent fast semiconductor company in Xiamen.
Because these " hardware encryptions " and specific optical module are complementary; Optical module has lacked these settings can't operate as normal; These settings arbitrarily write in the unmatched optical module this optical module also can't operate as normal, even if so pirate manufacturer can provide series number and settings in the database, but because the consistance of optical device is bad; Also can cause pirate optical module cisco unity malfunction, therefore can effectively avoid pirate optical module to come into the market.
Claims (5)
1. an optical module method for preventing piracy is characterized in that, may further comprise the steps:
S1: the debugging of optical module manufacturer obtains the settings of optical module;
S2: optical module manufacturer will not write the optical module of settings and will issue system manufacturer;
S3: system manufacturer obtains the settings of optical module from optical module manufacturer;
S4: system manufacturer writes optical module with the settings of optical module.
2. according to the said optical module method for preventing piracy of claim 1, it is characterized in that:
Said settings comprises the APCset value.
3. according to the said optical module method for preventing piracy of claim 1, it is characterized in that:
Said settings comprises the MODset value.
4. according to the said optical module method for preventing piracy of claim 1, it is characterized in that:
Said step S2 comprises that also optical module manufacturer is written to the series number of each optical module among the EEPROM of optical module, and settings, series number, the type information of this optical module deposited in the database.
5. according to the said optical module method for preventing piracy of claim 4, it is characterized in that:
Said step S3 comprises that also system manufacturer utilizes the internet to obtain the information of different optical modules, and step S4 comprises that also system manufacturer writes settings in the corresponding optical module according to series number.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112346242A (en) * | 2020-12-03 | 2021-02-09 | 长飞光纤光缆股份有限公司 | Method and device for quickly and automatically adjusting transmission eye pattern parameters of optical module |
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| CN102281102A (en) * | 2011-08-01 | 2011-12-14 | 成都优博创技术有限公司 | Open loop debugging method for optical power and extinction ratio of transmit terminal of optical module |
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| CN101179331A (en) * | 2006-11-08 | 2008-05-14 | 中兴通讯股份有限公司 | Automatic debugging method and system of optical module |
| CN1996350A (en) * | 2006-12-20 | 2007-07-11 | 杭州华为三康技术有限公司 | Electronic tag of optical module, making and identification method, and identification device therefor |
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| CN112346242A (en) * | 2020-12-03 | 2021-02-09 | 长飞光纤光缆股份有限公司 | Method and device for quickly and automatically adjusting transmission eye pattern parameters of optical module |
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Address after: 7, No. 216, No. 610041 South City Road, Chengdu hi tech Zone, Sichuan, 101, 201 Patentee after: Nine letter asset management Limited by Share Ltd. Address before: 7, No. 216, No. 610041 South City Road, Chengdu hi tech Zone, Sichuan, 101, 201 Patentee before: SICHUAN SUPERXON INFORMATION TECHNOLOGY Co.,Ltd. Address after: 7, No. 216, No. 610041 South City Road, Chengdu hi tech Zone, Sichuan, 101, 201 Patentee after: SICHUAN SUPERXON INFORMATION TECHNOLOGY Co.,Ltd. Address before: 7, No. 216, No. 610041 South City Road, Chengdu hi tech Zone, Sichuan, 101, 201 Patentee before: Superxon (Chengdu) Technology Ltd. |
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Effective date of registration: 20160612 Address after: 610041, D, 7, Tianfu Software Park, Chengdu hi tech Zone, Sichuan, 201 Patentee after: CHENGDU SUPERXON INFORMATION TECHNOLOGY Co.,Ltd. Address before: 7, No. 216, No. 610041 South City Road, Chengdu hi tech Zone, Sichuan, 101, 201 Patentee before: Nine letter asset management Limited by Share Ltd. |