CN105058997B - A kind of method and printing device of printing device verifying chip of imaging box - Google Patents
A kind of method and printing device of printing device verifying chip of imaging box Download PDFInfo
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- CN105058997B CN105058997B CN201510504951.7A CN201510504951A CN105058997B CN 105058997 B CN105058997 B CN 105058997B CN 201510504951 A CN201510504951 A CN 201510504951A CN 105058997 B CN105058997 B CN 105058997B
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Abstract
The invention discloses a kind of printing device imaging box chip verification method and corresponding printing devices.By the present invention, printing device includes first stage checking mode and second stage checking mode to the verification of imaging box chip being mounted thereto.In the starting stage, printing device is installed to the legitimacy of the imaging box chip on printing device using first stage checking mode to verify, when meeting preset condition, printing device is switched to second stage checking mode to verify the legitimacy for being installed to the imaging box chip on printing device by first stage checking mode.Due under checking mode and second stage checking mode in the first stage, information exchange step between chip and printing device is roughly the same, therefore only by new algorithm is activated to can be achieved in conventional method greatly reducing cost by imaging box chip recycling again burning and the effect reached.
Description
Technical field
The present invention relates to imagewise development technical field more particularly to a kind of printing device to imaging box chips such as imaging cartridges
Verification method and corresponding printing device.
Background technology
With the continuous development of imaging technique, the printings such as duplicator, printing device, facsimile machine, word processor are set
It is standby to be widely used.In general, it is both provided with can facilitating user replaces to be used for accommodating recording materials (such as ink in printing device
Water, carbon dust etc.) imaging cartridge, be usually provided with imaging box chip on imaging cartridge.
In imaging box chip, record sequence number, imaging cartridge model, filling characterization imaging substance color characteristics,
The verification informations such as characterization imaging substance total amount and the imaging date obtained in follow-up imaging process, imaging substance amount information
Wait image-forming informations.Printing device knows the use state of imaging cartridge by sending read write command to imaging box chip.
The imaging process (such as print procedure) of printing device is mainly by imaging box chip and printing device interaction come complete
Into.Since imaging cartridge and its imaging box chip are dismountable expendable imaging box chips, printing device manufacturer is in order to keep away
Exempt from user to damage printing device using counterfeit merchandise inferior on printing device, it will usually set one in printing device
A imaging box chip certification rule.This certification rule either the model of the default imaging cartridge stored in printing device and
The sequence number that color etc. is used for the verification information of verifying chip of imaging box or is stored in imaging box chip.For rear
Person, after imaging cartridge is installed in printing device, printing device will read the sequence number in imaging box chip, and then judging should
Whether sequence number is authorizing or legal, allows for refuse use not leading to using the consumptive material by this identification
Cross the consumptive material of this identification.Authentication mode in this way can avoid awarding using non-on printing device to a certain extent
The imaging cartridge of power.
However, even if strict certification rule is also leaky again.Counterfeiter is often through to mandate or legal
Imaging box chip carry out largely test and verify, certification rule can be cracked, finding out enables counterfeit imaging box chip to recognize
The method of machine.Therefore, for original-pack producer, effective service life of an imaging box chip certification rule is basically
The time that the certification rule is cracked by third party.If it exceeds this time limit, certification rule that original-pack producer can only more renew or
Person is modified burning again to the data in imaging box chip.This certainly will increase imaging box chip development cost, current
Certification rule fails between the publication of new certification rule to counterfeiter's opportunity.
Therefore, there is an urgent need for a kind of stronger certification rule of protection, to extend the effect of imaging box chip verifying function.
Invention content
In order to solve the above technical problem, the present invention provides a kind of new printing device imaging box chip verification method with
And corresponding printing device.This method includes first stage checking mode and second stage checking mode (namely two kinds of calibration modes
Formula), when meeting preset condition, printing device is switched to second stage school to the verification of imaging cartridge by first stage checking mode
Test pattern.
This method includes first stage checking mode and second stage checking mode, wherein
In the starting stage, printing device verifies the imaging cartridge being installed on printing device using first stage checking mode
The legitimacy of chip, when meeting preset condition, printing device is switched to second stage calibration mode by first stage checking mode
Formula is installed to the legitimacy of the imaging box chip on printing device to verify.
In one embodiment, it is described second for examining the data of legitimacy in the first stage checking mode
The data of specific bit number in the data to be checked for examining legitimacy are used in stage checking mode.
In one embodiment, the first stage checking mode includes the following steps：
Printing device includes the first data of random number to imaging box chip transmission to be verified；
Printing device reads the second data in imaging box chip to be verified；
Printing device receives the data to be checked from imaging box chip to be verified；
Whether printing device examines the data of specific bit number in data to be checked correct, allows imaging box chip if correct
Recognize machine, imaging box chip is not allowed to recognize machine if incorrect.
In one embodiment, the whether correct mode of data of specific bit number in data to be checked is examined to include in the following manner
One of：
First way, printing device perform the first logical operation to the first data and obtain the first operation result, judge the
Whether one operation result matches with the data of specific bit number in data to be checked；
The second way is preset with the mapping of the first data and the data of the specified digit of data to be checked in printing device
Table, printing device obtain the checking result of the data of the corresponding specified digit of the first data by searching for mapping table, judge its with
Whether the data of the specified digit of data to be checked match.
In one embodiment, the second stage checking mode includes the following steps：
Printing device is sent to imaging box chip to be verified comprising the first data of random number；
Printing device reads the second data in imaging box chip to be verified；
Printing device receives the data to be checked from imaging box chip to be verified；
Whether printing device examines data to be checked correct, imaging box chip is allowed to recognize machine if correct, if incorrect
Then imaging box chip is not allowed to recognize machine.
In one embodiment, examine the whether correct mode of data to be checked include it is following any one：
First way, printing device perform the second logical operation to the first data and obtain the second operation result, judge the
Whether two operation results match with data to be checked；
The second way, printing device perform third logical operation to the first data and the second data and obtain third operation knot
Fruit, judges whether third operation result matches with data to be checked；
The third mode is preset with the mapping table of the first data and data to be checked in printing device, and printing device is by looking into
Mapping table is looked for obtain the corresponding checking result of the first data, judges whether it matches with data to be checked；
4th kind of mode, printing device perform the 4th logical operation to the first data and the second data and obtain the 4th operation knot
Fruit, and the mapping table of the 4th data and data to be checked is preset in printing device, printing device obtains by searching for mapping table
The corresponding checking result of 4th data, judges whether it matches with data to be checked.
Fifth procedure is preset in printing device opposite with the remainder data except the specified digit in data to be checked
The tables of data answered, judges whether the data in tables of data match with the remainder data except the specified digit in data to be checked；
6th kind of mode judges the data that digit is specified described in data to be checked and its remainder except the specified digit
According to whether matching.
In one embodiment, judge whether data match whether refer to compare data identical or whether compare data
Meet preset algorithmic rule.
In one embodiment, first, second, third, fourth logical operation is combinational logic operation, Hash calculation
One or more of method, symmetric encipherment algorithm, rivest, shamir, adelman or digital signature identification.
In one embodiment, the preset condition includes any one following condition：
When producer upgrades the associated firmware of printing device or when printing device receives factory by internet
During the instruction for the activation second stage checking mode that family sends or when printing device receives the activation second-order that user sends
During the instruction of section checking mode or when printing device receives the activation second stage that the imaging box chip newly installed sends
During the instruction of checking mode or when printing device usage time reaches preset first stage verification service life.
In one embodiment, when imaging box chip is allowed to recognize machine, printing device will determine that correct data to be checked
The data of specified digit retransmit to imaging box chip or imaging box chip are continued other read-write operations,
Or it is to allow to perform imaging operation；When imaging box chip is not allowed to recognize machine, printing device reports an error or printing device
It terminates to the read-write operation of imaging box chip or is to forbid performing imaging operation.
According to another aspect of the present invention, additionally provide a kind of printing device, including imaging box chip authentication module and
Verify control module：
Imaging box chip authentication module is installed to printing device in the starting stage according to first stage checking mode to verify
On imaging box chip legitimacy；
When reaching preset condition, verification control module is cut imaging box chip authentication module by first stage checking mode
Second stage checking mode is changed to verify the legitimacy for being installed to the imaging box chip on printing device.
Compared with prior art, one or more embodiments of the invention can have the following advantages that：
Printing device includes first stage and second stage to the verification of imaging box chip (imaging cartridge) being mounted thereto
Two kinds of checking modes, are verified when dispatching from the factory for the first time after equipment development using the first stage, and the effective of rule is verified when the first stage
After service life is completed or occurred the counterfeit merchandise after cracking on the market, producer can be by activating second stage school
Test effective verification service life to extend imaging box chip.Due to checking mode and second stage checking mode in the first stage
Under, the information exchange step between chip and printing device is roughly the same, therefore can be achieved with only by the new algorithm of activation
Cost and the effect reached, is greatly reduced by imaging box chip recycling again burning in conventional method.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that being understood by implementing the present invention.The purpose of the present invention and other advantages can be by specification, rights
Specifically noted structure is realized and is obtained in claim and attached drawing.
Description of the drawings
Attached drawing is used to provide further understanding of the present invention, and a part for constitution instruction, the reality with the present invention
It applies example and is used together to explain the present invention, be not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the schematic diagram of printing device used in the embodiment of the present invention；
Fig. 2 is the schematic diagram that printing device used in the embodiment of the present invention is connect with imaging box chip；
Fig. 3 is the method and step figure that printing device performs first stage verification in the embodiment of the present invention one；
Fig. 4 is a kind of pseudo random number A provided in the embodiment of the present invention one and the relationship map figure of data C to be checked；
Fig. 5 is plus the method for second stage verification in first stage verification shown in Fig. 3 in the embodiment of the present invention one
Block diagram；
Fig. 6 is the method and step figure that printing device performs first stage verification in the embodiment of the present invention two；
Fig. 7 is a kind of pseudo random number A provided in the embodiment of the present invention two and the relationship of the second data B and data C to be checked
Mapping graph.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes.Obviously, following embodiments are only the part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained without making creative work
Example is applied, shall fall within the protection scope of the present invention.
Fig. 1 is the schematic diagram of printing device used in the embodiment of the present invention.It will be seen from figure 1 that printing device 1 wraps
Include user interface 10, imaging cartridge installation position 11, application-specific integrated circuit (ASIC) 12 and image recording unit 13.User interface 10 is used
In external equipments such as connection computer, mobile phone, video camera, internet, printing device is facilitated to receive the phase from external equipment
Close instruction.Multiple imaging cartridges 20 are detachably mounted on imaging cartridge installation position 11, it can in different imaging cartridges 20
To accommodate the imaging substance of different colours or type, imaging substance is provided to image recording unit 13.Printing device 1 for example can be with
It is ink jet printing device and/or duplicator or electrophotographic printer equipment and/or duplicator.
In the case of the above-mentioned example for printing device 1, image recording unit 13 for example can be inkjet printing
Head unit or electrophotographic printer unit, and including for the shape on the substrate 34 of for example a piece of print media or light-sensitive element
Into the imaging head 31 of image.Here, it is represented for convenience using reference numeral 34.For example, print media 34.Imaging cartridge
20 for example can be ink-feeding container, ink jet printhead cartridge (PH), toner container or electronic photography process cartridge (EP), wherein often
Kind needs the imaging substance of such as ink or ink powder consumed during being included in imaging.Printing device 1 uses imaging cartridge
Imaging substance included in 20, forms image on print media 34.Print media for example can be the scraps of paper, piece of cloth or saturating
Gelatin foil.
It should be noted that image recording unit 13 and imaging cartridge 11 can be both individually formed as discrete unit,
The unit of an entirety can also be merged into.For example, in ink-jet technology, this whole unit can be included as single
Consumables and the ink reservoir (reservoir) and the ink jet printhead cartridge (PH) of inkjet print head formed.Therefore, in order to
For the sake of convenient, " imaging cartridge " be used to include above-mentioned configured separate or configured in one piece, and be the example of consumables.It is preferred that
Ground is equipped on the outer wall of imaging cartridge 20 to store the chip for being related to 11 relevant information of imaging cartridge, the chip by bus with
Printing device is communicated.In the case of ink jet printhead cartridge (PH), chip can also be a part for printhead silicon.
Fig. 2 is that the application-specific integrated circuit (ASIC) 12 of printing device 1 is communicated by bus and imaging box chip 33
Schematic diagram.Bus includes power cord VCC, ground wire GND, clock line CLK and address date line Address/Data.Chip 33 with
Above-mentioned bus electrical connection, and receive power supply and signal.Since imaging cartridge 20 and imaging box chip 33 are removably to pacify
On printing device 1, therefore printing device 1 needs the legitimacy of proofing chip.
As previously mentioned, in order to extend the effect of imaging box chip verifying function, the present invention, which proposes, a kind of new to be recognized
Thinking is demonstrate,proved, i.e., by two kinds of checking modes come the legitimacy of proofing chip：First stage checking mode and second stage calibration mode
Formula.Verified when printing device dispatches from the factory for the first time after equipment development using the first stage, when meeting preset condition, printing device by
First stage checking mode is switched to second stage checking mode.Wherein, second stage checking mode is different from first stage school
Test pattern.Be preferably in the present invention, second stage checking mode be in the first stage on the basis of checking mode further
The verification method of differentiation.
The preset condition can be by producer according to specific requirement sets itself.Specifically, the preset condition can be
Can be that printing device receives swashing for producer's transmission by internet when producer upgrades the associated firmware of printing device
When printing device receives the activation instruction that user sends during instruction living or printing device receives new installation
Imaging box chip send activation instruction when, can also be producer equipment or imaging box chip manufacture before preset one
First stage verifies service life, when printing device has reached liter using when meeting preset first stage verification service life
Grade condition.
Fig. 3 shows that printing device is to the workflow of imaging cartridge progress first stage modulo check in one embodiment
Figure：
Step 101, printing device sends the first data by bus to chip, and the first data include read/write command data
With one group of pseudo random number A.This in the present embodiment group pseudo random number A is generated at random by the random number generator in printing device,
Pseudo random number A can also be pressed by having prestored multigroup pseudo random number in printing device in proofing chip in other embodiment
Chip is sent to according to the scheduled rule of manufacturer.
Step 102, printing device reads the second data B stored in chip by bus.In the present embodiment, the second data
B is the data for characterizing chip model, and the second data B can also be the sequence number recorded in chip, type in other embodiments
Information, color characteristics information, capacity information, etc. verification informations or obtained in follow-up imaging process the imaging date, imaging
The image-forming informations such as amount of substance information.
Step 103, printing device receives the data C to be checked from chip by bus.The data C to be checked is in chip
It prestores or the data of certain digit obtained by calculation (being in the present embodiment 16 bytes), and in step 101
Pseudo random number A has correspondence.
Step 104, printing device verifies the number of specific bit number (being in the present embodiment preceding 8 bytes) in data C to be checked
According to whether correct：
If correct, step 105 is performed；
If incorrect, step 106 is performed.
Step 105, chip is allowed to recognize machine.The step, which allows chip to recognize machine, can will determine that correct data C to be checked
The data of specified digit (preceding 8 bytes) retransmit to chip or are to continue with carrying out chip other read-write operations, again
Either imaging cartridge is allowed to perform imaging operation.
Step 106, chip is not allowed to recognize machine.It can be that printing device reports an error that the step, which does not allow chip to recognize machine, either
Printing device terminates to the read-write operation of the chip or is that imaging cartridge is forbidden to perform imaging operation.
Specifically, in above-mentioned steps 104, printing device verify specific bit number in data C to be checked (in the present embodiment for
Preceding 8 bytes) data it is whether correct, can be completed for example, by the following manner：
1) for example, printing device performs the first logical operation to pseudo random number A and obtains the first operation knot of 8 bytes
Fruit, then judges whether the first operation result matches with preceding 8 bytes of data C to be checked.First logical operation can be combination
Logical operation, secure hash algorithm, positive and negative code check operation or other manufacturers are preset in the operation rule in printing device.
2) it alternatively, prestoring the mapping table of preceding 8 byte datas of pseudo random number A and data C to be checked in printing device, beats
Printing apparatus obtains pseudo random number A corresponding third data D in the mapping table by searching for the mapping table, then judges third number
Whether matched with preceding 8 bytes of data C to be checked according to D.Here, it is illustrated by taking mapping table shown in Fig. 4 as an example.Work as pseudorandom
When number A are 09 4D 4A 30 01 20 39 80, printing device by searching for obtaining in the table corresponding to the second byte 4D,
The third data D corresponding to the row corresponding to row and the 5th byte 01 corresponding to nybble 30 is 39 6D B9 37 40
2F 46 01, and then compare whether third data D matches with preceding 8 bytes of data C to be checked.Certainly, this lookup table mode is only
It is citing, the present invention can be without being limited thereto.
When meeting preset condition, printing device is switched to second stage checking mode by first stage checking mode.The
The algorithm of two-stage checking mode either increase verification step (such as Fig. 5 institutes in the first stage on the basis of checking mode
Show) or the another set of step flow (as shown in Figure 6) similar to first stage checking mode.It should be noted that
In Fig. 5 and embodiment shown in fig. 6, second stage checking mode be increase on the basis of checking mode in the first stage it is a little
(more precisely saying it is one) verification step, in other words, for examining the to be checked of legitimacy in first stage checking mode
Data are the data of specific bit number in the data to be checked for being used to examine legitimacy in the second stage checking mode.In this way
Under one stage checking mode and second stage checking mode, the information exchange step between imaging box chip and printing device is substantially
It is identical.The advantageous effect done so is to realize the upgrading to authentication function with low development cost.But should illustrate
It is that the present invention also can be without being limited thereto, the verification principle of second stage checking mode can also be totally different from first stage verification
The verification principle of pattern, as long as can continue to realize the authentication function to imaging box chip upon activation.
Fig. 5 increases verification step on the basis of showing printing device first stage checking process shown in Fig. 3
Second stage method of calibration.
When second stage checking mode is activated, still step is performed according to first stage checking process shown in Fig. 3
101 to step 104, and also need to perform after step 104 is performed step 104 ', printing device verifies data C's to be checked
Whether the data of remaining digit (being in the present embodiment rear 8 bytes) are correct：If correct, step 105 is performed, if not just
Really, then step 106 is performed.Specifically, printing device verifies the whether correct mode of data of rear 8 bytes of data C to be checked
It can verify that whether correct the data mode of preceding 8 bytes of data C to be checked be identical with printing device in abovementioned steps 104,
It is not repeated herein.
Fig. 6 shows that printing device should require to carry out imaging cartridge the work of second stage modulo check in another embodiment
Make flow chart：
Step 201, printing device sends the first data by bus to chip, and the first data include read/write command data
With one group of pseudo random number A.This group of pseudo random number A both can at random be generated by the random number generator in printing device, can also
By having prestored multigroup pseudo random number in printing device, core is sent to according to the scheduled rule of manufacturer in proofing chip
Piece.
Step 202, printing device reads the second data B stored in chip by bus.In the present embodiment, the second data
B is the data for characterizing chip model, and the second data B can also be the sequence number recorded in chip, type in other embodiments
Information, color characteristics information, capacity information, etc. verification informations or obtained in follow-up imaging process the imaging date, imaging
The image-forming informations such as amount of substance information.
Step 203, printing device receives the data C to be checked from chip by bus.The data C to be checked is in chip
It prestores or the data of certain digit obtained by calculation (being in the present embodiment 16 bytes), and in step 201
Pseudo random number A have correspondence.
Step 204, printing device verifies whether the data of data C to be checked are correct：
If correct, step 205 is performed；
If incorrect, step 206 is performed.
Step 205, chip is allowed to recognize machine.It can will determine that correctly data C weights to be checked that the step, which allows chip to recognize machine,
It is new to be sent to chip or be to continue with carrying out chip other read-write operations or be that imaging cartridge is allowed to perform imaging behaviour
Make.
Step 206, chip is not allowed to recognize machine.It can be that printing device reports an error that the step, which does not allow chip to recognize machine, either
Printing device terminates to the read-write operation of the chip or is that imaging cartridge is forbidden to perform imaging operation.
Specifically, in above-mentioned steps 204, printing device verifies whether data C to be checked is correct, can be for example, by following
Mode is completed：
1) for example, printing device performs the second logical operation to pseudo random number A obtains the second operation result of 16 bytes,
Judge whether the second operation result matches with data C to be checked.Second logical operation can be combinational logic operation, secure hash calculation
Method, positive and negative code check operation or other manufacturers are preset in the operation rule in printing device.
2) alternatively, printing device, which performs pseudo random number A and the second data B third logical operation, obtains the of 16 bytes
Three operation results, judge whether third operation result matches with data C to be checked.Third logical operation can be pseudo random number A and
Combinational logic operation, secure hash algorithm, positive and negative code check operation or other manufacturers of second data B are preset in printing and set
Operation rule in standby.
3) or, the mapping table of pseudo random number A and data C to be checked are stored in printing device, printing device is by looking into
Table obtains pseudo random number A corresponding 4th data E in the mapping table, compares whether the 4th data E matches with data C to be checked.
4) it again alternatively, be stored with the mapping table of pseudo random number A and the second data B and data C to be checked in printing device, prints
Equipment performs the 4th logical operation to pseudo random number A and the second data B and obtains the 4th data E, and be preset in printing device
The mapping table of 4th data E and data C to be checked, printing device obtain looking into corresponding to the 4th data E by searching for the mapping table
Table is as a result, judge whether it matches with data to be checked.Here, it is illustrated by taking mapping table shown in Fig. 7 as an example.When to pseudorandom
When number A and the second data B the 4th logical operations of execution obtain the 4th operation result as 09 4D 4A 30 01 20 39 80,
In table corresponding to second byte 4D, the data corresponding to the row corresponding to row and the 5th byte 01 corresponding to nybble 30
For 39 6D B9,37 40 2F, 46 01 30 01 20 39 2F, 46 4D 4A, compare the data and data C to be checked whether
Match.Certainly, above-mentioned lookup table mode is only citing, can also specifically there is other lookup table modes, such as the numbers of pseudo random number A and second
According to the data of the specific position respectively as pointer Compass, judge whether the data of the position match with data C to be checked, this hair
It is bright can be without being limited thereto.
Further, in above-mentioned comparison procedure, judge whether corresponding data match with data C to be checked, either sentencing
Whether disconnected data are identical with data C to be checked or judge whether data with data C to be checked meet preset algorithmic rule.
Correspondingly, the present invention provides a kind of printing device including imaging box chip authentication module and verification control module.
Wherein, imaging box chip authentication module was installed on printing device according to first stage checking mode to verify in the starting stage
Imaging box chip legitimacy；When reaching preset condition, verification control module is by imaging box chip authentication module by first
Stage checking mode is switched to second stage checking mode to verify the legitimacy for being installed to the imaging box chip on printing device.
It should be noted that in the above-described embodiments, first, second, third, fourth logical operation can be raw
Produce operation rule of the factory pre-sets in printing device, such as will with door or door, NOT gate, take true form, negate code, take complement code, frameshit
The combinational logic operation that at least one logical operation is combined；Can also be international canonical algorithm, as hash algorithm,
Symmetric encipherment algorithm, rivest, shamir, adelman, digital signature identification etc..First, second, third, fourth logical operation is
Can be the operation rule that manufacturer is preset in printing device, such as will with door or door, NOT gate, take true form, negate code, take
The combinational logic operation that at least one logical operation of complement code, frameshit is combined；Can also be international canonical algorithm, such as
Hash algorithm, symmetric encipherment algorithm, rivest, shamir, adelman, digital signature identification etc..Whether judge data in above-described embodiment
Matching refers to compare whether data are identical or compare whether data meet preset algorithmic rule, which equally may be used
Can also be international canonical algorithm to be the operation rule that manufacturer is preset in printing device.
To sum up, the present invention proposes that a kind of new printing including two kinds of checking modes of first stage and second stage is set
Standby imaging box chip authentication method and the printing device for implementing this method.The first rank is used when dispatching from the factory for the first time after equipment development
Section verification, when effective service life of first stage verification rule terminates or imitative after having cracked on the market
Mao Pinhou, producer can extend effective verification service life of imaging box chip by way of activating second stage verification step.
Further, in the above-described embodiments, due under first stage checking mode and second stage checking mode, imaging box chip and
Information exchange step between printing device is roughly the same, therefore only by activating new algorithm that will be imaged with regard to that can reach traditional
Box chip recycles the effect of burning again, substantially reduces exploitation maintenance cost.
The above, only specific implementation case of the invention, protection scope of the present invention is not limited thereto, any ripe
Those skilled in the art are known in technical specification of the present invention, modifications of the present invention or replacement all should be in the present invention
Protection domain within.
Claims (11)
- A kind of 1. method of printing device verifying chip of imaging box, it is characterised in that：Including first stage checking mode and second stage checking mode, whereinIn the starting stage, printing device verifies the imaging box chip being installed on printing device using first stage checking mode Legitimacy, when meeting preset condition, printing device by first stage checking mode be switched to second stage checking mode Lai Verification is installed to the legitimacy of the imaging box chip on printing device；Wherein, the preset condition include it is following any one Part：It is sent out when producer upgrades the associated firmware of printing device or when printing device receives producer by internet During the instruction of activation second stage checking mode sent or when printing device receives the activation second stage school that user sends When testing the instruction of pattern or when printing device receives the activation second stage verification that the imaging box chip newly installed sends During the instruction of pattern or when printing device usage time reaches preset first stage verification service life.
- 2. the method for printing device verifying chip of imaging box according to claim 1, which is characterized in that in first rank The data for being used to examine legitimacy in section checking mode are to be used to examine the to be checked of legitimacy in the second stage checking mode The data of specific bit number in data.
- 3. the method for printing device verifying chip of imaging box according to claim 1, which is characterized in that the first stage Checking mode includes the following steps：Printing device includes the first data of random number to imaging box chip transmission to be verified；Printing device reads the second data in imaging box chip to be verified；Printing device receives the data to be checked from imaging box chip to be verified；Whether printing device examines the data of specific bit number in data to be checked correct, imaging box chip is allowed to recognize if correct Machine does not allow imaging box chip to recognize machine if incorrect.
- 4. the method for printing device verifying chip of imaging box according to claim 3, which is characterized in that examine data to be checked The whether correct mode of data of middle specific bit number includes one of in the following manner：First way, printing device perform the first logical operation to the first data and obtain the first operation result, judge the first fortune Calculate whether result matches with the data of specific bit number in data to be checked；The second way is preset with the mapping table of the first data and the data of the specified digit of data to be checked in printing device, beats Printing apparatus obtains the checking result of the data of the corresponding specified digit of the first data by searching for mapping table, judges itself and number to be checked According to the data of specified digit whether match.
- 5. the method for the printing device verifying chip of imaging box according to any one in claims 1 to 3, feature exist In the second stage checking mode includes the following steps：Printing device includes the first data of random number to imaging box chip transmission to be verified；Printing device reads the second data in imaging box chip to be verified；Printing device receives the data to be checked from imaging box chip to be verified；Whether printing device examines data to be checked correct, imaging box chip is allowed to recognize machine if correct, if incorrect not Imaging box chip is allowed to recognize machine.
- 6. the method for printing device verifying chip of imaging box according to claim 5, which is characterized in that examine data to be checked Whether correct mode include it is following any one：First way, printing device perform the second logical operation to the first data and obtain the second operation result, judge the second fortune Calculate whether result matches with data to be checked；The second way, printing device perform third logical operation to the first data and the second data and obtain third operation result, Judge whether third operation result matches with data to be checked；The third mode, is preset with the mapping table of the first data and data to be checked in printing device, and printing device is by searching for reflecting Firing table obtains the corresponding checking result of the first data, judges whether it matches with data to be checked；4th kind of mode, printing device perform the 4th logical operation to the first data and the second data and obtain the 4th operation result, And the mapping table of the 4th data and data to be checked is preset in printing device, printing device obtains the 4th by searching for mapping table The corresponding checking result of data, judges whether it matches with data to be checked；Fifth procedure is preset in printing device corresponding with the remainder data except the specified digit in data to be checked Tables of data, judges whether the data in tables of data match with the remainder data except the specified digit in data to be checked；6th kind of mode judges to specify the data of digit described in data to be checked with being except the remainder data of the specified digit No matching.
- 7. the method for the printing device verifying chip of imaging box according to claim 4 or 6, it is characterised in that：Judge whether data match whether refer to compare data identical or compare whether data meet preset algorithmic rule.
- 8. the method for printing device verifying chip of imaging box according to claim 4, it is characterised in that：First logical operation is combinational logic operation, hash algorithm, symmetric encipherment algorithm, rivest, shamir, adelman or number One kind in signature authentication.
- 9. the method for printing device verifying chip of imaging box according to claim 6, it is characterised in that：It is described second, third, the 4th logical operation be combinational logic operation, hash algorithm, symmetric encipherment algorithm, asymmetric encryption One or more of algorithm or digital signature identification.
- 10. the method for printing device verifying chip of imaging box according to claim 1, it is characterised in that：When imaging box chip is allowed to recognize machine, printing device will determine that the data of the specified digit of correct data to be checked are sent out again It gives imaging box chip or continues other read-write operations to imaging box chip or be to allow to perform imaging Operation；When imaging box chip is not allowed to recognize machine, printing device reports an error or printing device terminates reading to imaging box chip Write operation or be forbid perform imaging operation.
- 11. a kind of printing device, which is characterized in that including imaging box chip authentication module and verification control module：Imaging box chip authentication module was installed on printing device according to first stage checking mode to verify in the starting stage The legitimacy of imaging box chip；When reaching preset condition, imaging box chip authentication module is switched to by verification control module by first stage checking mode Second stage checking mode is installed to the legitimacy of the imaging box chip on printing device to verify；Wherein, the preset condition includes any one following condition：It is sent out when producer upgrades the associated firmware of printing device or when printing device receives producer by internet During the instruction of activation second stage checking mode sent or when printing device receives the activation second stage school that user sends When testing the instruction of pattern or when printing device receives the activation second stage verification that the imaging box chip newly installed sends During the instruction of pattern or when printing device usage time reaches preset first stage verification service life.
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| CN108116053B (en) * | 2017-12-19 | 2019-07-26 | 杭州旗捷科技有限公司 | A kind of consumable chip authentication method, consumable chip and imaging cartridge |
| CN110395049A (en) * | 2018-04-25 | 2019-11-01 | 广州众诺电子技术有限公司 | High capacity chip and consumable container |
| CN110378096A (en) * | 2019-07-15 | 2019-10-25 | 杭州旗捷科技有限公司 | A kind of consumable chip communication means, consumable chip and consumptive material |
| CN113326008A (en) * | 2020-02-28 | 2021-08-31 | 广州众诺电子技术有限公司 | Chip verification method, imaging chip and imaging box |
| CN113687802A (en) * | 2021-08-27 | 2021-11-23 | 广州众诺电子技术有限公司 | Chip verification method and related device |
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Address after: 7th Floor, Building 04, No. 63, Qianshan Mingzhu North Road, Zhuhai City, Guangdong Province, 519000 Patentee after: Jihai Microelectronics Co.,Ltd. Address before: 7th Floor, Building 04, No. 63, Qianshan Mingzhu North Road, Zhuhai City, Guangdong Province, 519000 Patentee before: APEX MICROELECTRONICS Co.,Ltd. |