CN103009816B - Consumable chip and rewriter, rewrite method that it is rewritten - Google Patents
Consumable chip and rewriter, rewrite method that it is rewritten Download PDFInfo
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- CN103009816B CN103009816B CN201110280561.8A CN201110280561A CN103009816B CN 103009816 B CN103009816 B CN 103009816B CN 201110280561 A CN201110280561 A CN 201110280561A CN 103009816 B CN103009816 B CN 103009816B
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Abstract
The rewriter, the rewrite method that the invention provides a kind of consumable chip and it is rewritten, FLASH in the chip micro-controller of consumable chip is provided with rewriting module, can rewrite EEPRPM, and startup rewriting module is set in rewriter, start and rewrite module transmission startup rewriting signal to after the rewriting module of consumable chip, rewriteeing module can rewrite EEPROM.The present invention designs consumable chip inside and carries rewriting program, actual rewrite operation is undertaken by the rewriting module in consumable chip, and not containing the information data relevant to consumable chip in rewriter, avoid rewriter and intercepted and captured by people's malice because transmitting a large amount of consumable chip data in consumable chip rewrite process.Project organization of the present invention is simple, with low cost, use safety, reliable.
Description
Technical field
The present invention relates to a kind of chip, the consumable chip especially on printing consumables, and to consumable chip rewrite rewriter and rewrite method.
Background technology
Printer as common office equipment, for modern office provides great convenience.Existing printer is divided into ink-jet printer and laser printer, and ink-jet printer uses the print cartridge accommodating ink to spray ink as consumable container to paper, to form the word or pattern that need to print on paper; Laser printer then uses the cartridge accommodating carbon dust on medium, form the word or pattern that need to print as consumable container.
No matter be the print cartridge that ink-jet printer uses, or the cartridge that laser printer uses, its box body is provided with mostly one piece for storing the consumable chip printing consumer (ink or carbon dust) related data information, this consumable chip is generally fixed on position corresponding with printer probe on cartridge outer surface.Printer probe is generally seven or nine, consumable chip has the contact corresponding with printer number of probes and position, forms electrical connection correspondingly between the two during work.When box body to be installed on printer start or printer is again started shooting, printer main body all will perform once to the identification of box body, namely identifies consumable chip.The control assembly of printer can send a series ofly reads instruction to read the information in consumable chip, as information such as sequence number, residue consumer capacity, the date of production.When the information matches stored in the information that consumable chip is replied and printer storage, then identifying terminates, and printer can enter normal print state, otherwise printer will point out mistake.In print procedure, the situation record of the consumption of consumptive material in print procedure or box body internal consumption body can be stored in consumable chip by printer main body.When consumer is used up, printer is to the data of consumable chip write " consumer exhausts " correspondence, and the consumer residual capacity information in consumable chip is recorded as " sky " or " zero ", at this moment, even if again fill consumer in box body, consumable chip can not be used by printer identification again.Unless rewritten consumable chip, its consumer residual capacity information is reduced to " expiring " by " sky ", and consumable chip could use as brand-new chip again.
The structure of consumable chip, there is a substrate, multiple electric contacts that substrate is provided with chip micro-controller and is connected with chip micro-controller, FLASH(Flash Memory is provided with in chip micro-controller, i.e. flash memory) and EEPROM(Electrically Erasable Programmable Read-Only Memory, i.e. EEPROM).Be not with EEPROM in some chip micro-controller, then adopt external EEPROM.
FLASH is nonvolatile storage, and it can only to being called that the memory cell block of block (Block) is carried out erasable and programmes, can not be erasable by byte (Byte).EEPROM is also nonvolatile storage, and it can only be erasable by byte (Byte).In consumable chip, can be placed on by the data that printer is rewritten in the EEPROM of chip micro-controller, can not be placed in the FLASH of chip micro-controller by the data of rewriting.
When consumable chip dispatches from the factory, program curing code in the FLASH of chip micro-controller, namely carries out the instruction communicated with printer; Record the data of the brand-new state of chip in EEPROM, comprise consumer capacity information for " expiring " state.When consumable chip communicates with printer main body, when printer main body transmission reads instruction to consumable chip, chip micro-controller identification reads instruction and reads data from EEPROM correspondence position to send to printer main body; When printer main body sends write command to consumable chip, chip micro-controller identification write command also writes data to EEPROM correspondence position.
Usually, special rewriter is adopted to rewrite consumable chip, the mass data of consumable chip is stored in this special rewriter, in rewrite process, the related data stored in it writes in consumable chip by rewriter, consumable chip is made to revert to " completely newly " state, can again by printer identification and use.For the consumable chip of chip micro-controller with built-in EEPROM, corresponding rewriter is equivalent to a programmable device, and it reprograms FLASH and EEPROM in chip micro-controller, then consumable chip reverts to brand-new chip; For the consumable chip of chip micro-controller with external EEPROM, when rewriter is directly by writing, ordered pair EEPROM rewrites, and make the rewriting data of EEPROM become " completely newly " state, then consumable chip reverts to brand-new chip.
In the rewrite process of rewriter to consumable chip, the probe in rewriter is connected correspondingly with the electric contact of consumable chip, and rewriter transmission timing is to consumable chip.Like this, the sequential in rewrite process is easy to be captured and decode, and such as, connects oscillograph monitor at probe and electric contact junction, can collect all data that rewriter sends to consumable chip.This program code that script is encrypted in consumable chip and data can be obtained easily in rewrite process, and some information is divulged a secret inadequately.
Summary of the invention
Main purpose of the present invention is to provide a kind of consumable chip preventing divulging a secret;
Another object of the present invention is to provide a kind of rewriter rewritten above-mentioned consumable chip;
An also object of the present invention is to provide a kind of rewrite method using above-mentioned rewriter to rewrite above-mentioned consumable chip.
For realizing above-mentioned main purpose, consumable chip provided by the invention comprises substrate, and substrate is provided with chip micro-controller, and is provided with the electric contact group that can receive external signal; Chip micro-controller has FLASH, EEPROM, is provided with and can carries out with printer the operational module that communicates in FLASH, and EEPROM stores and prints consumer related data; The rewriting module that can rewrite EEPROM is provided with in FLASH; Also be provided with in FLASH and judge to enter operational module or enter the judge module rewriteeing module according to external signal.
From such scheme, arrange operational module and rewrite module in FLASH, when consumable chip communicates with printer, operational module starts, and printer reads data by operational module from EEPROM, and data are write EEPROM; When consumable chip needs to rewrite, rewriting module starts, the built-in rewriting module of FLASH can rewrite EEPROM, do not need outside input rewriting program, and the judge module arranged in FLASH is used for judging it is for operational module or for rewriteeing module according to the enabling signal of outside.The rewriting module of this programme is placed in consumable chip inside, can effectively prevent chip internal information leakage.
A concrete scheme is that electric contact group is one group of electric contact group that can be electrically connected with printer probe or rewriter probe.Adopt one group of electric contact group, both can be used for being electrically connected with printer probe and carried out printing and communicate, and can be electrically connected with rewriter probe again and carry out rewriting chip.Like this, can saving chip area, also can spacing between reasonable Arrangement contact.
Another concrete scheme is, electric contact group comprises the first electric contact group for being electrically connected with printer probe, and the second electric contact group for being electrically connected with rewriter probe.Adopt two groups of different contact sets receive printer signal respectively and rewrite signal, can effectively avoid chip judge by accident and enter incorrect pattern
Rewriter provided by the invention, for rewriteeing the consumable chip as above-mentioned either a program, comprises housing, is provided with rewritting circuit in housing, and rewritting circuit comprises rewriting microcontroller, rewrites microcontroller and is electrically connected with the rewriter probe be arranged on housing; Rewrite in microcontroller the rewriting startup module being provided with and starting described rewriting module.
During use, rewriter is electrically connected with consumable chip, and rewrite and start module transmission rewriting enabling signal to consumable chip, the judge module in consumable chip FLASH judges to enter rewriting module, rewrites module and rewrites EEPROM.The sequential rewriteeing and start just is provided with in this rewriter, not containing rewriting program, consumable chip is undertaken, from rewriteeing, adopting this rewriter to rewrite consumable chip, can not being revealed consumable chip internal information because of the data transmitted in rewrite process by intercepting and capturing by the rewriting module arranged in it.
The above-mentioned rewriter of the employing that the present invention also provides to the rewrite method that above-mentioned consumable chip rewrites is: rewriter probe is electrically connected with electric contact group; Rewrite startup module transmission rewriting enabling signal and judge startup rewriting module to the judge module of FLASH, FLASH according to rewriting enabling signal, rewriting module rewrites the data stored in EEPROM.
Be printer and rewriter one group of sharing or the first electric contact group used respectively and the second electric contact group according to electric contact group, its rewriter probe is electrically connected with public one group of contact, or is electrically connected with the second electric contact group.
Accompanying drawing explanation
Fig. 1 is the functional block diagram of consumable chip embodiment of the present invention;
Fig. 2 is the structure chart of consumable chip embodiment;
Fig. 3 is the structure chart of rewriter embodiment;
Fig. 4 is the sequential of shaking hands of rewriter and consumable chip in the rewrite method of consumable chip.
Below in conjunction with accompanying drawing and each embodiment, the invention will be further described.
Detailed description of the invention
Consumable chip embodiment
Be the functional block diagram of consumable chip see Fig. 1, Fig. 1.Consumable chip is formed primarily of the chip micro-controller 1 of one piece of substrate and upper setting thereof, and chip micro-controller 1 has FLASH 2 and EEPROM.Certainly, substrate is also provided with carries out the electric contact of communication or radio-frequency antenna etc. for chip micro-controller 1 and printer.
Have program stored therein in FLASH 2 instruction code and from rewriting program code, is divided into judge module, operational module and rewriting module three parts.Judge module goes out the signal of communication of printer transmission or the rewriting enabling signal of rewriter transmission according to input-signal judging, thus the code space entered in operational module performs the traffic operation between printer, or jump to the code space execution rewrite operation rewritten in module.
Storing the data relevant to printing consumer in EEPROM, comprising the type of printing consumer, printing consumer is full state and printing consumer surplus.In consumable chip and printer communication process, the data in EEPROM " are read ", " writing ".Carry out in rewrite process in the rewriting module of FLASH 2 to EEPROM, the data in EEPROM are rewritten.
Be the structure chart of consumable chip see Fig. 2, Fig. 2.
The substrate 1 of consumable chip is provided with two the electric contact groups divided by function, first electric contact group has 1,2,3 and 4 electric contacts, for being electrically connected with printer probe, these four electric contacts are followed successively by clock (SCL), power supply (VCC), ground wire (GND), data (SDA) electric contact; Second electric contact group has 2,3,5,6 and 7 electric contacts, for being electrically connected with rewriter probe, these five electric contacts are followed successively by power supply (VCC), ground wire (GND), sheet choosing (CS), clock (WSCL), data (WSDA) electric contact, and wherein CS, WSCL and WSDA do not participate in the communication between printer.
The consumable chip of the present embodiment is designed with from rewriting program, when supplying a rewriting enabling signal in outside, rewriting module in consumable chip FLASH can rewrite EEPROM, avoids prior art rewriter and carries out needing in rewrite process to send a large amount of chip data to consumable chip and cause revealing the phenomenon of chip information.And, devise for the electric contact different from two groups that external electric signal is electrically connected, what can distinguish consumable chip reception is printer communication signal or rewriting enabling signal, make the judge module in consumable chip FLASH can accurately judge enter operational module or rewrite module, there will not be the problem being strayed into module because of wrong diagnosis.
Rewriter embodiment
The structure of rewriter is shown see Fig. 3, Fig. 3.Rewriter has a housing, is provided with rewritting circuit in housing, and housing outer surface arranges shift knob and display floater, the socket be made up of multiple probe that the data wire of drawing from housing and data wire terminal are formed, and is called for short rewriter probe.
Rewritting circuit comprises a rewriting microcontroller, rewrites in microcontroller to be provided with to rewrite to start module, and it stores and correctly enters to make it sequential rewriteeing module for supplying consumable chip as what rewrite enabling signal; Supply rewrites the battery of microcontroller power supply; Control the switch of power supply; And rewrite successfully/failed result double-colored display LED for the power supply indication LED that shows power supply and display.The control end of its switch is the shift knob of housing outer surface, and power supply indication LED and result double-colored display LED are all exposed on the display floater of housing outer surface.The electrical connection rewritten between microcontroller and consumable chip is realized by the electrical connection between rewriter probe and the second electric contact group of consumable chip.
The rewriter of the present embodiment, it rewrites in microcontroller need not store a large amount of chip data, only needing to arrange in it for carrying out the instruction of shaking hands of handshake communication with consumable chip, just entering rewriting module after receiving instruction on WSCL and WSDA of consumable chip.
Rewrite method embodiment
The present embodiment is the rewrite method adopting the rewriter in above-described embodiment to rewrite the consumable chip in above-described embodiment, and its concrete steps are:
Consumable chip is taken out in printer, gets out the special rewriter corresponding with it, the handshake communication agreement of coupling is set in this rewriter and this consumable chip respectively;
Open the shift knob in rewriter, the power supply indicator of rewriter is bright, rewrite microcontroller and start working, and whether the electric contact group ceaselessly detecting consumable chip engages with rewriter probe;
Second electric contact group of consumable chip is electrically connected correspondingly with rewriter probe, the I/O Port detecting rewriteeing microcontroller accesses to consumable chip, then rewrite and start module by CS, WSCL, WSDA, VCC and GND electric contact to consumable chip transmission timing, sequential that can be shown in Figure 4;
Namely rewriter is in wait state after sending sequential, rewriter opens stand-by period timer, if do not obtain the result of " rewriteeing successfully " that consumable chip returns at the appointed time, then think and rewrite time-out, operation failure, result double-colored display LED sends out a warning, if received at the appointed time " rewriteeing successfully ", then think and rewrite successfully, result double-colored display LED gives a green light;
When consumable chip receives sequential, namely consumable chip is powered, simultaneously, after WSCL, WSDA of consumable chip receiving the instruction of shaking hands of rewriter transmission, judge through judge module and enter rewriting module, certainly, it is more more complex that instruction of shaking hands also can design, the form such as sending more multibyte instruction or repeatedly answer with consumable chip;
Rewriting module in consumable chip in FLASH rewrites EEPROM, and after rewriting, carry out verification rewriting result;
After consumable chip completes rewriting, namely return the data of " rewriteeing successfully " to rewriter.
The rewrite method of the present embodiment is completed jointly by consumable chip and rewriter, and rewriter is responsible for also sending the sequential of startup rewriting to consumable chip to chip power supply, and concrete rewriting is come by the rewriting module in FLASH in consumable chip with check and correction process.Make consumable chip correctly enter the sequential rewriteeing module because rewriter is only to provide, even if collected by malicious user all data that rewriter sends to chip, also can not expose essence code and the data of chip.
And the rewriter of the present embodiment no longer needs the mass data storing consumable chip, its simplicity of design, cheap, use safety, reliable.
Above-described embodiment is only specific embodiment of the present invention, more change can also be had during practical application, such as, first electric contact group and the second electric contact group can be designed to duplicate electric contact, can judge equally to need enter operational module or rewrite module etc. according to the difference of Received signal strength, these changes can realize object of the present invention equally.
Finally it is emphasized that and the invention is not restricted to above-mentioned embodiment, the EEPROM as consumable chip is positioned at chip micro-controller outside, is equally applicable to the present invention, and these changes also should be included in the protection domain of the claims in the present invention.
Claims (6)
1. consumable chip, comprises
Substrate, substrate is provided with chip micro-controller, and is provided with the electric contact group that can receive external signal;
Described chip micro-controller has FLASH, EEPROM, is provided with and can carries out with printer the operational module that communicates in described FLASH, and described EEPROM stores and prints consumer related data;
It is characterized in that:
The rewriting module that can rewrite described EEPROM is also provided with in described FLASH;
Also be provided with in described FLASH and judge to enter operational module or enter the judge module rewriteeing module according to described external signal.
2. consumable chip according to claim 1, is characterized in that:
Described electric contact group is one group of electric contact group that can be electrically connected with printer probe or rewriter probe.
3. consumable chip according to claim 1, is characterized in that:
Described electric contact group comprises the first electric contact group for being electrically connected with printer probe, and the second electric contact group for being electrically connected with rewriter probe.
4. by the method that rewriter rewrites consumable chip,
Described consumable chip comprises:
Substrate, substrate is provided with chip micro-controller, and is provided with the electric contact group that can receive external signal; Described chip micro-controller has FLASH, EEPROM, is provided with and can carries out with printer the operational module that communicates in described FLASH, and described EEPROM stores and prints consumer related data; The rewriting module that can rewrite described EEPROM is also provided with in described FLASH; Also be provided with in described FLASH and judge to enter operational module or enter the judge module rewriteeing module according to described external signal;
Its rewriter comprises:
Housing, is provided with rewritting circuit in housing, and described rewritting circuit comprises rewriting microcontroller, and described rewriting microcontroller is electrically connected with the rewriter probe arranged on the housing; Be provided with the rewriting starting described rewriting module in described rewriting microcontroller and start module;
Its rewrite method is:
Described rewriter probe is electrically connected with described electric contact group;
Described rewriting starts module and sends rewriting enabling signal to described FLASH, and the judge module of described FLASH judges to start described rewriting module according to described rewriting enabling signal, and described rewriting module rewrites the data stored in described EEPROM.
5. according to claim 4 by the method that rewriter rewrites consumable chip,
It is characterized in that:
Described electric contact group is one group of electric contact group that can be electrically connected with printer probe or rewriter probe;
Described rewriter probe is electrically connected with described one group of electric contact group.
6. the method that rewrites consumable chip of rewriter according to claim 4, is characterized in that:
Described electric contact group comprises the first electric contact group for being electrically connected with printer probe and the second electric contact group for being electrically connected with rewriter probe;
Described rewriter probe is electrically connected with described second electric contact group.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110280561.8A CN103009816B (en) | 2011-09-20 | 2011-09-20 | Consumable chip and rewriter, rewrite method that it is rewritten |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110280561.8A CN103009816B (en) | 2011-09-20 | 2011-09-20 | Consumable chip and rewriter, rewrite method that it is rewritten |
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| CN103009816A CN103009816A (en) | 2013-04-03 |
| CN103009816B true CN103009816B (en) | 2015-08-19 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103722893B (en) * | 2013-12-23 | 2016-06-15 | 珠海天威技术开发有限公司 | Consumable chip and method of work, consumable container |
| WO2018006265A1 (en) * | 2016-07-05 | 2018-01-11 | 杭州旗捷科技有限公司 | Apparatus for realizing plug-free function of ink cartridge and use method therefor |
| CN106626796B (en) * | 2017-01-03 | 2019-07-16 | 珠海艾派克微电子有限公司 | Consumable chip, imaging cartridge and sequence number switching method |
| CN207096971U (en) * | 2017-06-30 | 2018-03-13 | 杭州旗捷科技有限公司 | A kind of consumable chip data rewriting equipment |
| CN107589920B (en) * | 2017-07-31 | 2021-02-19 | 杭州旗捷科技有限公司 | Reset method for chip, electronic device, storage medium and device |
| CN109426466A (en) * | 2017-09-05 | 2019-03-05 | 北京立思辰计算机技术有限公司 | A kind of printer chip and its storage distribution method |
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