CN103009816A - Consumable chip as well as rewriter and rewriting method for rewriting consumable chip - Google Patents
Consumable chip as well as rewriter and rewriting method for rewriting consumable chip Download PDFInfo
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- CN103009816A CN103009816A CN2011102805618A CN201110280561A CN103009816A CN 103009816 A CN103009816 A CN 103009816A CN 2011102805618 A CN2011102805618 A CN 2011102805618A CN 201110280561 A CN201110280561 A CN 201110280561A CN 103009816 A CN103009816 A CN 103009816A
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Abstract
The invention provides a consumable chip as well as a rewriter and a rewriting method for rewriting the consumable chip. A FLASH in a chip micro controller of the consumable chip is provided with a rewriting module for rewriting an electrically erasable programmable read only memory (EEPROM); a rewrite starting module is arranged in the rewriter; and after the rewrite starting module sends a rewrite starting signal to the rewriting module of the consumable chip, the rewriting module rewrites the EEPROM. A rewriting program is arranged in the consumable chip; an actual rewriting operation is executed by the rewriting module in the consumable chip; and the rewriter does not contain information data relevant to the consumable chip, so that a phenomenon of malicious interception caused by a reason that the rewriter transmits a large amount of consumable chip data of the consumable chip during rewriting is avoided. The consumable chip is simple in design structure and low in cost and is used securely and reliably.
Description
Technical field
The present invention relates to a kind of chip, the consumable chip on the printing consumables especially, and rewriting device and rewrite method that consumable chip is rewritten.
Background technology
Printer is 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 that accommodates ink to spray ink as consumable container to paper, to form literal or the pattern that needs printing at paper; Laser printer then uses the cartridge that accommodates carbon dust to form literal or the pattern that needs printing at medium as consumable container.
No matter be the print cartridge that ink-jet printer uses, or the cartridge that laser printer uses, mostly be provided with one on its box body and be used for the consumable chip that consumer (ink or carbon dust) related data information is printed in storage, this consumable chip generally is fixed on position corresponding with the printer probe on the cartridge outer surface.The printer probe is generally seven or nine, and the contact corresponding with printer number of probes and position arranged on the consumable chip, forms correspondingly between the two during work to be electrically connected.When box body is installed on the printer start or printer when again starting shooting, printer main body all will be carried out once the identification of box body, namely consumable chip is identified.The control assembly of printer can send a series ofly to be read instruction and reads information in the consumable chip, such as information such as sequence number, residue consumer capacity, the date of production.When in information that consumable chip is replied and the printer storage during canned data coupling, then identifying end, printer can enter normal print state, otherwise printer will be pointed out mistake.In the print procedure, printer main body can record the consumption of consumptive material in the print procedure or the situation of box body internal consumption body and be stored in the consumable chip.When consumer is used up, printer writes data corresponding to " consumer exhausts " to consumable chip, and the consumer residual capacity information recording/ in the consumable chip is " sky " or " zero ", at this moment, even again fill consumer in the box body, consumable chip can not be identified by printer and use again.Unless consumable chip is rewritten, make its consumer residual capacity information be reduced to " expiring " by " sky ", consumable chip could use as brand-new chip again.
The structure of consumable chip, a substrate is arranged, a plurality of electric contacts that substrate is provided with the chip microcontroller and is connected with the chip microcontroller, be provided with FLASH(Flash Memory in the chip microcontroller, be flash memory) and EEPROM(Electrically Erasable Programmable Read-Only Memory, i.e. EEPROM).Be not with EEPROM in some chip microcontroller, then adopt external EEPROM.
FLASH is nonvolatile storage, and it can only carry out erasable and again programming to the memory cell block that is called piece (Block), can not be erasable by byte (Byte).EEPROM also is 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 among the EEPROM of chip microcontroller, the data that can not be rewritten are placed among the FLASH of chip microcontroller.
When consumable chip dispatches from the factory, program curing code among the FLASH of chip microcontroller, the instruction that namely communicates with printer; Record the data of the brand-new state of chip among the EEPROM, comprise that the consumer capacity information is " expiring " state.When consumable chip and printer main body communicated, when instruction was read in the printer main body transmission to consumable chip, the identification of chip microcontroller was read instruction and is sent to printer main body from EEPROM correspondence position reading out data; When printer main body sends write command to consumable chip, chip microcontroller identification write command and to EEPROM correspondence position data writing.
Usually, adopt special rewriting device that consumable chip is rewritten, the mass data of having stored consumable chip in this special rewriting device, in rewrite process, rewriteeing device writes the related data of storing in it in consumable chip, make consumable chip revert to " completely newly " state, can again be identified by printer and use.For the consumable chip of the chip microcontroller with built-in EEPROM, corresponding rewriting device is equivalent to a programmable device, and it reprograms the FLASH in the chip microcontroller and EEPROM, and then consumable chip reverts to brand-new chip; For the consumable chip of the chip microcontroller with external EEPROM, rewrite device directly when writing ordered pair EEPROM rewrite, the data of EEPROM are rewritten as " completely newly " state, then consumable chip reverts to brand-new chip.
In rewriteeing the rewrite process of device to consumable chip, the probe that rewrites on the device is connected correspondingly with the electric contact of consumable chip, rewrites the device transmission timing to consumable chip.Like this, the sequential in the rewrite process is easy to be captured and decode, and for example, connects the oscillograph supervision at probe and electric contact junction, can collect and rewrite all data that device sends to consumable chip.This is divulged a secret some information so that program code and the data of originally encrypting in consumable chip can obtain in rewrite process easily inadequately.
Summary of the invention
Main purpose of the present invention provides a kind of consumable chip of divulging a secret of preventing;
Another object of the present invention provides a kind of rewriting device that above-mentioned consumable chip is rewritten;
An also purpose of the present invention provides a kind ofly uses above-mentioned rewriting to think highly of the rewrite method of writing above-mentioned consumable chip.
For realizing above-mentioned main purpose, consumable chip provided by the invention comprises substrate, and substrate is provided with the chip microcontroller, and is provided with the electric contact group that can receive external signal; The chip microcontroller has FLASH, EEPROM, is provided with the operational module that can communicate with printer in the FLASH, and the consumer related data is printed in the EEPROM storage; Be provided with the rewriting module that can rewrite EEPROM in the FLASH; Also be provided with in the FLASH according to external signal and judge the judge module that enters operational module or enter the rewriting module.
By such scheme as seen, operational module is set in FLASH and rewrites module, when consumable chip and printer communicate, the operational module startup, printer from the EEPROM reading out data, and writes EEPROM with data by operational module; When consumable chip need to rewrite, the rewriting module starts, the built-in rewriting module of FLASH can rewrite EEPROM, do not need outside input rewriting program, and the judge module that arranges in the FLASH is used for being for operational module or being used for rewriteeing module according to the enabling signal judgement of outside.The rewriting module of this programme places consumable chip inner, can effectively prevent the chip internal information leakage.
A concrete scheme is that the electric contact group is or to rewrite one group of electric contact group that the device probe is electrically connected with the printer probe.Adopt one group of electric contact group, both can be used for being electrically connected to have printed with the printer probe communicating by letter, again can with rewrite the device probe and be electrically connected and rewrite chip.Like this, but saving chip area, but spacing between the reasonable Arrangement contact also.
Another concrete scheme is, the electric contact group comprises for the first electric contact group that is electrically connected with the printer probe, and is used for and the second electric contact group that rewrites the device probe and be electrically connected.Adopt two groups of different contact sets to receive respectively printer signal and rewrite signal, can effectively avoid the chip erroneous judgement and enter incorrect pattern
Rewriting device provided by the invention be used for to rewrite as the consumable chip of above-mentioned either party's case, comprises housing, is provided with rewritting circuit in the housing, and rewritting circuit comprises the rewriting microcontroller, rewrites microcontroller and is electrically connected with rewriting device probe on being arranged on housing; Rewrite and be provided with the rewriting startup module that starts described rewriting module in the microcontroller.
During use, the rewriting device is electrically connected with consumable chip, rewrites to start module transmission rewriting enabling signal to consumable chip, and the judge module judgement among the consumable chip FLASH enters the rewriting module, rewrites module EEPROM is rewritten.Just be provided with in this rewriting device and rewrite the sequential that starts, do not contain rewriting program, consumable chip is undertaken adopting this rewriting to think highly of and writing consumable chip from rewriteeing by the rewriting module that arranges in it, can not intercepted and not captured because of the data of transmitting in the rewrite process and reveal the consumable chip internal information.
The above-mentioned rewriting device of the employing that the present invention also provides to the rewrite method that above-mentioned consumable chip rewrites is: rewrite the device probe and be electrically connected with the electric contact group; Rewrite the startup module and send the rewriting enabling signal to FLASH, the judge module of FLASH judges that according to rewriteeing enabling signal startup rewrites module, and the rewriting module rewrites the data of storing in the EEPROM.
Be printer and rewrite a group or the first electric contact group and the second electric contact group of using respectively that device shares according to the electric contact group, it rewrites device probe and is electrically connected with public one group of contact, perhaps is electrically connected with the second electric contact group.
Description of drawings
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 that rewrites device embodiment;
Fig. 4 is the sequential of shaking hands that rewrites device and consumable chip in the rewrite method of consumable chip.
The invention will be further described below in conjunction with accompanying drawing and each embodiment.
The specific embodiment
Consumable chip embodiment
Referring to Fig. 1, Fig. 1 is the functional block diagram of consumable chip.Consumable chip mainly is made of a substrate and the upper chip microcontroller 1 that arranges thereof, and chip microcontroller 1 has FLASH 2 and EEPROM.Certainly, also be provided with on the substrate for chip microcontroller 1 and printer and carry out the electric contact of communication or radio-frequency antenna etc.
Have program stored therein among the FLASH 2 instruction code and from the rewriting program code is divided into judge module, operational module and three parts of rewriting module.Judge module goes out the signal of communication of printer transmission or rewrites the rewriting enabling signal that device sends according to input-signal judging, thereby enter that code space in the operational module is carried out and printer between traffic operation, perhaps jump to the code space that rewrites in the module and carry out rewrite operation.
Store the data relevant with printing consumer among the EEPROM, comprise that type, the printing consumer of printing consumer are full state and print the consumer surplus.In consumable chip and printer communication process, the data among the EEPROM " are read ", " writing ".Rewriting module at FLASH 2 is carried out in the rewrite process EEPROM, and the data among the EEPROM are rewritten.
Referring to Fig. 2, Fig. 2 is the structure chart of consumable chip.
The substrate 1 of consumable chip is provided with two electric contact groups of dividing by function, the first electric contact group has 1,2,3 and 4 electric contacts, be used for being electrically connected with the printer probe, these four electric contacts are followed successively by clock (SCL), power supply (VCC), ground wire (GND), data (SDA) electric contact; The second electric contact group has 2,3,5,6 and 7 electric contacts, be used for being electrically connected with rewriting device probe, these five electric contacts are followed successively by power supply (VCC), ground wire (GND), sheet choosing (CS), clock (WSCL), data (WSDA) electric contact, wherein CS, WSCL and WSDA do not participate in and printer between communication.
The consumable chip of the present embodiment is designed with from rewriting program, when externally supplying with a rewriting enabling signal, rewriting module among the consumable chip FLASH can rewrite EEPROM, has avoided prior art with rewriteeing that device carries out needing in the rewrite process to send a large amount of chip datas to consumable chip and the phenomenon that causes revealing chip information.And, two groups of different electric contacts that are used for being electrically connected from external electric signal have been designed, what can distinguish the consumable chip reception is printer communication signal or rewriting enabling signal, enter operational module or rewrite module so that the judge module among the consumable chip FLASH can accurately be judged, the problem of module can not occur being strayed into because of wrong diagnosis.
Rewrite device embodiment
Referring to Fig. 3, Fig. 3 shows the structure that rewrites device.Rewriteeing device has a housing, is provided with rewritting circuit in the housing, and housing outer surface arranges shift knob and display floater, and the socket that is comprised of a plurality of probes that the data wire of drawing from housing and data wire terminal form is called for short rewriteeing the device probe.
Rewritting circuit comprises a rewriting microcontroller, rewrite to be provided with in the microcontroller to rewrite to start module, its store as rewrite enabling signal be used for supplying with consumable chip so that it correctly enters the sequential that rewrites module; Supply with the battery that rewrites the microcontroller power supply; The switch of control power supply; And be used for showing that the power supply indication LED of power supply and demonstration rewrite successfully/the failed double-colored demonstration of result LED.The control end of its switch is the shift knob of housing outer surface, and the double-colored demonstration of power supply indication LED and result LED all is exposed on the display floater of housing outer surface.Rewrite being electrically connected by the realization that is electrically connected between the second electric contact group that rewrites device probe and consumable chip between microcontroller and the consumable chip.
The rewriting device of the present embodiment, it rewrites in microcontroller needn't store a large amount of chip datas, only needs to be provided in it carrying out with consumable chip the instruction of shaking hands of handshake communication, just enters the rewriting module after receiving instruction on the WSCL of consumable chip and the WSDA.
Rewrite method embodiment
The present embodiment is to adopt the rewriting in above-described embodiment to think highly of the rewrite method of writing the consumable chip among the above-mentioned embodiment, and its concrete steps are:
Consumable chip is taken out in printer, be ready to the special rewriting device corresponding with it, the handshake communication agreement of coupling is set respectively in this rewriting device and this consumable chip;
Open to rewrite the shift knob on the device, the power supply indicator that rewrites device is bright, rewrite microcontroller and start working, and the electric contact group that ceaselessly detects consumable chip whether with rewrite the device probe and engage;
The second electric contact group of consumable chip is electrically connected correspondingly with rewriting device probe, the I/O Port detecting that rewrites microcontroller accesses to consumable chip, then rewrite the startup module and pass through CS, WSCL, WSDA, VCC and GND electric contact to the consumable chip transmission timing, can be referring to sequential shown in Figure 4;
Rewrite and namely be in wait state after device sends sequential, rewrite device and open the stand-by period timer, if do not obtain at the appointed time the result of " rewriteeing successfully " that consumable chip returns, think that then rewriting is overtime, operation failure, the double-colored demonstration of result LED sends out a warning, if receive at the appointed time " rewriteeing successfully ", then think to rewrite successfully, the double-colored demonstration of result LED gives a green light;
When consumable chip receives sequential, consumable chip namely is powered, simultaneously, after receiving the instruction of shaking hands that rewrites the device transmission on the WSCL of consumable chip, the WSDA, judge and enter the rewriting module through judge module, certainly, it is more more complex that the instruction of shaking hands also can design, such as the form that sends more multibyte instruction or repeatedly answer with consumable chip;
Rewriting module in the consumable chip in the FLASH rewrites EEPROM, and carries out verification rewriting result after rewriting;
After consumable chip is finished rewriting, namely return the data of " rewriteeing successfully " to the rewriting device.
The rewrite method of the present embodiment is finished jointly by consumable chip and rewriting device, and the sequential that the rewriting device is responsible for also sending the startup rewriting to chip power supply is to consumable chip, and concrete rewriting is to be finished by the rewriting module among the FLASH in the consumable chip with the check and correction process.Make consumable chip correctly enter the sequential that rewrites module because the rewriting device only provides, even collected all data that the rewriting device sends to chip by malicious user, also can not expose essence code and the data of chip.
And the rewriting device of the present embodiment no longer needs to store the mass data of consumable chip, and its simplicity of design, cheap is used safety, reliable.
Above-described embodiment only is specific embodiment of the present invention, during practical application more variation can also be arranged, for example, the first electric contact group and the second electric contact group can be designed to duplicate electric contact, can judge equally needs according to the difference that receives signal and enter operational module or rewrite module etc., these changes can realize purpose of the present invention equally.
It is emphasized that at last to the invention is not restricted to above-mentioned embodiment, be positioned at the chip microcontroller such as the EEPROM of consumable chip outside, be equally applicable to the present invention, these variations also should be included in the protection domain of claim of the present invention.
Claims (7)
1. consumable chip comprises
Substrate, substrate are provided with the chip microcontroller, and are provided with the electric contact group that can receive external signal;
Described chip microcontroller has FLASH, EEPROM, is provided with the operational module that can communicate with printer in the described FLASH, and the consumer related data is printed in described EEPROM storage;
It is characterized in that:
Also be provided with the rewriting module that can rewrite described EEPROM in the described FLASH;
Also be provided with in the described FLASH according to described external signal and judge the judge module that enters operational module or enter the rewriting module.
2. consumable chip according to claim 1 is characterized in that:
Described electric contact group is or to rewrite one group of electric contact group that the device probe is electrically connected with the printer probe.
3. consumable chip according to claim 1 is characterized in that:
Described electric contact group comprises for the first electric contact group that is electrically connected with the printer probe, and is used for and the second electric contact group that rewrites the device probe and be electrically connected.
4. rewriting device, it is used for rewriteeing such as each described consumable chip of claims 1 to 3, comprising:
Housing is provided with rewritting circuit in the housing, described rewritting circuit comprises the rewriting microcontroller, and described rewriting microcontroller is electrically connected with rewriting device probe on being arranged on described housing;
It is characterized in that:
Be provided with the rewriting that starts described rewriting module in the described rewriting microcontroller and start module.
5. the method that with the rewriting device consumable chip is rewritten,
Described consumable chip comprises:
Substrate, substrate are provided with the chip microcontroller, and are provided with the electric contact group that can receive external signal; Described chip microcontroller has FLASH, EEPROM, is provided with the operational module that can communicate with printer in the described FLASH, and the consumer related data is printed in described EEPROM storage; Also be provided with the rewriting module that can rewrite described EEPROM in the described FLASH; Also be provided with in the described FLASH according to described external signal and judge the judge module that enters operational module or enter the rewriting module;
It rewrites device and comprises:
Housing is provided with rewritting circuit in the housing, described rewritting circuit comprises the rewriting microcontroller, and described rewriting microcontroller is electrically connected with rewriting device probe on being arranged on described housing; Be provided with the rewriting that starts described rewriting module in the described rewriting microcontroller and start module;
Its rewrite method is:
Described rewriting device probe is electrically connected with described electric contact group;
Described rewriting starts module and sends the rewriting enabling signal to described FLASH, and the judge module of described FLASH is judged the described rewriting module of startup according to described rewriting enabling signal, and described rewriting module rewrites the data of storing in the described EEPROM.
6. described with the method for rewriting device to the consumable chip rewriting according to claim 5,
It is characterized in that:
Described electric contact group is or to rewrite one group of electric contact group that the device probe is electrically connected with the printer probe;
Described rewriting device probe is electrically connected with described one group of electric contact group.
7. according to claim 5 with rewriteeing device to the method that consumable chip rewrites, it is characterized in that:
The second electric contact group that described electric contact group comprises for the first electric contact group that is electrically connected with the printer probe and is used for being electrically connected with rewriting device probe;
Described rewriting device probe is electrically connected with described the second electric contact group.
Priority Applications (1)
| 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 true CN103009816A (en) | 2013-04-03 |
| CN103009816B CN103009816B (en) | 2015-08-19 |
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| CN103722893A (en) * | 2013-12-23 | 2014-04-16 | 珠海天威技术开发有限公司 | Consumable chip, working method of consumable chip and consumable container |
| CN106626796A (en) * | 2017-01-03 | 2017-05-10 | 珠海艾派克微电子有限公司 | Consumable chip, imaging box and serial number switching method |
| 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 |
| CN107589920A (en) * | 2017-07-31 | 2018-01-16 | 杭州旗捷科技有限公司 | For the repositioning method of chip, electronic equipment, storage medium and equipment |
| WO2019000509A1 (en) * | 2017-06-30 | 2019-01-03 | 杭州旗捷科技有限公司 | Consumable chip data rewriting device |
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| CN103009816B (en) | 2015-08-19 |
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