CN103862879B - A kind of ink box chip and use the print cartridge of this chip - Google Patents
A kind of ink box chip and use the print cartridge of this chip Download PDFInfo
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- CN103862879B CN103862879B CN201410019068.4A CN201410019068A CN103862879B CN 103862879 B CN103862879 B CN 103862879B CN 201410019068 A CN201410019068 A CN 201410019068A CN 103862879 B CN103862879 B CN 103862879B
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- amount information
- black amount
- ink
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
- B41J2/17503—Ink cartridges
- B41J2/17543—Cartridge presence detection or type identification
- B41J2/17546—Cartridge presence detection or type identification electronically
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- Ink Jet (AREA)
- Record Information Processing For Printing (AREA)
Abstract
The invention discloses a kind of ink box chip, comprising: communications interface unit, it is for communicating with the imaging device installing print cartridge, to receive or to send the black amount information of the first form；Date Conversion Unit, for the black amount information of the first form received is converted to the black amount information of the second form, the bit number wherein comprised in the second form is more than the bit number comprised in the first form；Memory element, for preserving the black amount information of described second form；Wherein when imaging device needs the black amount information reading ink box chip, described Date Conversion Unit is additionally operable to the black amount information that ink amount information reverting is the first form of the second form of storage in memory element.Black amount information owing to preserving in memory element is more than the bit number of the information received from imaging device; therefore; the when that this memory element being read out by other illegality equipment, it is impossible to accurately obtain the black amount information of reality, thus be effectively protected the safety of ink box chip data.
Description
Technical field
The present invention relates to imagewise development technical field, specifically, relate to a kind of ink box chip and use this chip
Print cartridge.
Background technology
Along with the development of imaging technique, the such as imaging such as photocopier, printer, facsimile machine, word processor dress
Put and be the most extensively employed.Imaging device includes facilitating that user changes for accommodating the print cartridge of ink and entering medium
The printhead of row imaging operation.Be stored with the ink of ormal weight in print cartridge, when the ink stored is finished it is necessary to and
Time the print cartridge that more renews.Damage for avoiding in print cartridge imaging device after ink to continue to print the printhead caused
Bad, imaging device can calculate the black amount information (residue ink amount information or exhausted amount of ink information) in print cartridge, and
Point out user to change print cartridge when ink will exhaust.
This ink amount information is generally held in the memorizer of imaging device.Therefore, if print cartridge is an imaging
After device uses a period of time, it is removed and is installed in another imaging device, imaging device record
Ink amount information is possible to lose or go wrong.For avoiding above-mentioned situation, increasing print cartridge starts to set
Put chip, and information of being measured by ink stores in the chips.Imaging device can read ink amount information from chip and examine certainly
The black amount information of body storage is the most accurate.
But, ink amount information, as the significant data of record user's history of printing, stores reality in the chips the most right
The ink amount of imaging device has examined effect.Once the black amount information in chip is read by other people, causes personal data
Leakage, may give be made employment bring harm.It addition, in existing chip, often ink amount information directly stores
Region fixing in the chips, it is easy to be tampered, cause imaging device that ink amount information is misread, thus prestige
Side of body equipment and the safety of information.
Therefore, a kind of chip that can guarantee that ink amount data information security is needed badly.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, it is proposed that a kind of ink box chip, comprising:
Communications interface unit, it is for communicating with the imaging device installing print cartridge, to receive or to send the
The black amount information of one form；
Date Conversion Unit, for being converted to the ink amount letter of the second form by the black amount information of the first form received
Breath, the bit number wherein comprised in the second form is more than the bit number comprised in the first form；
Memory element, for preserving the black amount information of described second form；Wherein
When imaging device needs the black amount information reading ink box chip, described Date Conversion Unit is additionally operable to deposit
The black amount information that ink amount information reverting is the first form of the second form of storage in storage unit.
Black amount information owing to preserving in memory element is more than the bit number of the information received from imaging device, because of
This, the when that this memory element being read out by miscellaneous equipment, it is impossible to accurately obtain the black amount information of reality,
Thus it is effectively protected the safety of ink box chip data.
According to one embodiment of present invention, described communications interface unit includes contact sets, and these contacts are in order to carry
Wire communication between supplying ink box chip and imaging device.Or, described communications interface unit may also comprise antenna
And match circuit, to provide the radio communication between ink box chip and imaging device.
According to one embodiment of present invention, described memory element includes Nonvolatile memory device or main by easily
Lose storage device and the storage circuit with non-volatile function of electrical storage device composition.Described Date Conversion Unit from
In memory element, in the black amount information of the second form of storage, the black amount information of the first form of reduction is last
The secondary black amount information received from imaging device and/or the black amount information previously received from imaging device.
According to one embodiment of present invention, in described Date Conversion Unit, obtain second in the following ways
The black amount information of form:
The black amount information calculating the first form accounts for the percentage ratio of total ink amount；
The bit number comprised in predetermined second form；And
The black amount information of the second form is obtained according to corresponding relation according to this percentage ratio and predetermined bit number.
According to one embodiment of present invention, in described Date Conversion Unit, obtain second in the following ways
The black amount information of form:
Produce the redundant data comprising certain bit；
The black amount information of this redundant data Yu described first form carries out being mixed to get the ink amount letter of the second form
Breath.
According to one embodiment of present invention, the black amount information of this redundant data with described first form is mixed
Close operation include following one or more operation combinations:
A) using described redundant data as the black amount information group of high position data or low data with described first form
Close the black amount information forming the second form；Or
B) by least one in the black amount information of described redundant data and described first form according to number of bits
Amount is grouped, and subsequently these packets is carried out rearrangement superposition and forms the black amount information of the second form；Or
C) by the black amount information of at least part of bit in described redundant data and described first form at least partly than
Spy carries out logical operations and obtains the black amount information of the second form.
According to one embodiment of present invention, or several during described redundant data includes following item: in advance
The data of setting, the true form of black amount information of the first form, the radix-minus-one complement of black amount information of the first form, the first lattice
The complement code of black amount information of formula, pseudo random number, by the black amount information of the second form of storage in described memory element
At least some of data that reduction obtains.Wherein, described at least some of data include previously connecing from imaging device
The black amount information received.
According to one embodiment of present invention, described Date Conversion Unit also includes for producing above-mentioned pseudo random number
Pseudorandom number generator.
According to one embodiment of present invention, described redundant data is the ink amount letter previously received from imaging device
Breath.
According to one embodiment of present invention, described Date Conversion Unit also includes logic encrypting module, by institute
State logic encrypting module and the black amount information of the first form received is encrypted the ink amount letter generating the second form
Breath.
According to another aspect of the present invention, additionally provide a kind of print cartridge, this print cartridge is mounted with as mentioned above
Ink box chip.
The present invention is used can effectively to ensure the safety of the data of storage especially ink amount information in ink box chip,
The combination of various ways forms the black amount information of expansion position and desirably prevents the malice that it is carried out by other illegality equipment
Read or write operation.Date Conversion Unit in chip can also use the contrary expansion bit manipulation expansion to storage
Position ink amount information is reduced, and does not the most affect the imaging device reading to actual ink amount information under regular situation.
Other features and advantages of the present invention will illustrate in the following description, and partly from description
Become apparent, or understand by implementing the present invention.The purpose of the present invention and other advantages can be passed through
Structure specifically noted in description, claims and accompanying drawing realizes and obtains.
Accompanying drawing explanation
For the purpose of the present invention, accompanying drawing is for illustration purposes only, and unrestricted.In the drawings:
Fig. 1 is the cut-away view of ink box chip according to an embodiment of the invention；
Fig. 2 is the cut-away view of ink box chip according to another embodiment of the invention；
Fig. 3 is the schematic diagram that an example according to the present invention carries out ink amount Information expansion；
Fig. 4 is the schematic diagram that another example according to the present invention carries out ink amount Information expansion；
Fig. 5 carries out logical operations according to the present invention to ink amount information and preset data and forms expansion bit format information
Schematic diagram.
Detailed description of the invention
Describe embodiments of the present invention in detail below with reference to accompanying drawing, whereby how the present invention is applied skill
Art means solve technical problem, and the process that realizes reaching technique effect can fully understand and implement according to this.
As long as it should be noted that do not constitute conflict, each feature in various embodiments of the present invention and each embodiment
Can be combined with each other, the technical scheme formed is all within protection scope of the present invention.
In imaging operation, imaging device is mutual with ink box chip generation information, including: imaging device
Send write instruction to ink box chip, send the black amount information produced in print procedure to ink box chip；
Imaging device sends to ink box chip and reads instruction, it is desirable to ink box chip transmits ink amount information and returns to imaging dress
Putting, when imaging device does not receives the black amount information from ink box chip, or the black amount information received is not inconsistent
During the requirement of synthesized image device, imaging device reports an error or refuses printing.Such as, return when ink box chip
When showing quantity of ink deficiency in print cartridge back to the black amount information of imaging device, imaging device refusal printing.
Mutual for meeting this information of imaging device and chip chamber, ink is generally measured information with many by prior art
The form of bit is stored directly in the memorizer of imaging device and the memory element of ink box chip respectively.
As, represent that print cartridge ink inside surplus accounts for the 0 of print cartridge normal capacity～the ratio of 100% by 8 bit data.Work as ink
Water surplus is " 1,111 1111 " for ink amount information during full ink amount, the ink amount letter when ink remaining amount is 50%
Breath is " 01111111 ", and when ink remaining amount is 0, ink amount information is " 00000000 ".It is to say,
Print cartridge normal capacity is divided into 28 parts, when ink remaining amount reduces 1/256, all has one group fixing 8
Bit data is the most corresponding, and be stored in the memorizer of imaging device and the memory element of ink box chip fixing
Position.
Above-mentioned ink amount information is as the important historical data of record printing, and user is often desirable to it
Get up as secret protection.And chip is as will abandoned electronics device after a life cycle of print cartridge
Part, the consideration being typically based on cost and the cycle of use will not use the anti-breaking techniques of complexity to data in chip
Protect.Once chip is cracked, and will result in print cartridge service condition leaking data.Further, since ink amount
Information is to be stored directly in the most respectively in chip, it is easy to be tampered, such as, as
The black amount information of fruit chip record represents that print cartridge ink inside will exhaust, then the life-span of chip generally also will knot
Bundle, but chip can be renovated by lawless person by making the black amount information of chip record into Man Moliang,
And consumer cannot learn.
Therefore, the present invention proposes a kind of new technical scheme, is i.e. receiving the ink amount letter from imaging device
During breath, ink box chip passes through Date Conversion Unit, and it is that figure place is than the ink amount letter received that ink is measured information conversion
The many data of figure place (for convenience of describing, hereinafter referred to as expand bit data) of breath, and write that chip had non-
Volatile memory.When imaging device reads ink amount information, the expansion bit data of storage is converted to by ink box chip
The black amount information of the discernible figure place of imaging device returns to imaging device.This ink box chip disclosure satisfy that into
As the demand of device identification ink amount information, but the expansion bit data stored but is measured with the black of imaging device write
Information is different such that it is able to avoid revealing user profile.
Further, since the figure place of the black amount information that the expansion bit data of storage writes than imaging device in ink box chip
Many, also imply that actual ink amount information data have passed through and break up or encryption, except the designer of chip
Or outside manufacturer, other users cannot effectively prevent ink by cracking the data acquisition ink amount information in chip
Amount information is tampered.
To this, the invention provides a kind of chip 10 as shown in Figure 1.Communication interface is included on this chip 10
Unit 11, Date Conversion Unit 13(are alternatively referred to as data conversion module 13) and memory element 12.
Communications interface unit 11 is for communicating with the imaging device installing print cartridge, to receive or to send the
The black amount information of one form is used for and imaging device communication.Specifically, communications interface unit 11 can be core
Carry out contacting the contact sets of communication on sheet with imaging device, it is also possible to carry out radio communication with imaging device
Antenna and match circuit.
Memory element 12 is used for depositing ink reservoir volume information.Specifically, memory element 12 can be non-volatile depositing
Reservoir, it is also possible to the electricity with non-volatile memories function being made up of volatile memory and electrical storage device
Road.
Date Conversion Unit 13 electrically connects with interface unit 11 and memory element 12, for from imaging device
The black amount information received carries out data conversion, and the black amount information of the first form received is converted to the second form
Ink amount information.Wherein, the bit number comprised in the second form more than the bit number comprised in the first form, i.e. before
The expansion bit data stated (hereinafter, " expansion bit data " and " the black amount information of the second form " refer to identical implication,
It is used interchangeably).Or the black amount information of the second form read from memory element 12 is carried out reduction treatment,
To form the black amount information of the first form.The second form that Date Conversion Unit 13 stores from memory element 12
Black amount information in the black amount information of the first form of reduction can be that chip 10 connects from imaging device for the last time
The black amount information received, it is also possible to be the black amount information previously received from imaging device.Here, " previously " include
The implication of " front once ".Use previous ink amount information in an embodiment of the present invention.But, can
To understand to be, " previously " also includes " first twice ", " first three time ", before being this operation in a word
Read or receive operation.This is not done any restriction by the present invention.
Specifically, when imaging device is to chip write ink amount information, Date Conversion Unit 13 is connect by communication
Mouth unit 11 receives the black amount information from imaging device, startup black amount information expansion position process function, and by
The black amount information expanding expansion bit data both the second forms behind position stores in memory element 12.When imaging device is read
During black amount information in coring sheet, Date Conversion Unit 13 reads the second form of storage in memory element 12
Ink amount information, starts information reverting and processes function, and by the black amount information of the first form after reduction by logical
Letter interface unit 11 is sent to imaging device.
Ink amount information expands position process function and refers specifically to, and Date Conversion Unit 13 will receive from imaging device
Ink amount information is converted into the black amount information of figure place second form more than the figure place of the black amount information received.Information
Reduction treatment function refers specifically to, and Date Conversion Unit 13 is by the ink amount of the second form of storage in memory element 12
Information is converted into the black amount information of the discernible figure place of imaging device.By ink amount information being carried out at expansion position
Reason, can effectively prevent the leakage of ink amount information and distort, protection customer privacy and data safety.
Date Conversion Unit 13 change the concrete mode of data can be data are broken up, insert redundant data,
Perform one or more in default computing or the encryption of other logics.This redundant data can be to preset
Data, or the pseudo random number produced by pseudo-random generator, as in figure 2 it is shown, this chip 10 also includes puppet
Random generator 31.
The mode that data conversion unit 13 processes data below is described in detail, and those skilled in the art should
This is known, ink amount information of the present invention refers to for characterizing ink remaining amount information or exhausted amount of ink letter
The data that breath etc. are relevant with print cartridge ink inside amount situation.
The first data transfer method:
Date Conversion Unit 13 completes ink amount information and the data expanded between bit data by equal percentage conversion mode
Conversion.
In this fashion, following steps are generally performed:
The black amount information calculating the first form accounts for the percentage ratio of total ink amount；
The bit number comprised in predetermined second form；And
The black amount information of the second form is obtained according to corresponding relation according to this percentage ratio and predetermined bit number.
In one example, for example, it is assumed that the black amount information of the first form of imaging device write chip is 16
The ink remaining amount of position, expands the data that bit data is 32.When imaging device writes ink remaining amount to chip
Time, Date Conversion Unit 13 receives the ink of the first form from imaging device by communications interface unit 11
Amount information, starts ink remaining amount and expands position process function.In this place in reason, Date Conversion Unit 13 by with
Lower formula:
Ink remaining amount is become percentage value and represents with 32.Then, after Date Conversion Unit 13 will convert
32 expansion bit data as the black amount information write storage unit 12 of the second form.When imaging device reads core
During black amount information in sheet, Date Conversion Unit 13 reads second lattice of 32 of storage in memory element 12
The black amount information of formula, starts information reverting and processes function.In this place in reason, Date Conversion Unit 13 by with
Lower formula:
The black amount information of the second form is become percentage value, and with the binary number representation of 16.Then data
The black amount information of 16 ink remaining amounts the first form in other words after reduction is passed through interface list by converting unit 13
Unit 11 is sent to imaging device.
Owing to print cartridge total capacity is fixing, therefore, represent that 16 bit data of print cartridge total capacity and print cartridge always hold
32 expansion bit data of amount correspondence are all fixing.Being changed by above-mentioned formula, Date Conversion Unit is easy to
Complete the mutual conversion between the black amount information of the first form and the black amount information of the second form.
It will be recognized by those skilled in the art that above-mentioned first form ink amount information and the black amount information of the second form
Figure place only to facilitate understand the present invention and illustrate, for reality apply in ink amount information and expand bit data
Concrete figure place, the present invention does not limits.In present embodiment, expand the reality that bit data stores in the chips
Figure place and conversion mode only chip designer or manufacturer are it is known that the leakage of ink amount information can effectively be prevented
With distort, protection customer privacy and data safety.
The second data transfer method:
Date Conversion Unit 13 completes former by the way of ink being measured information and mixes with the redundant data having fixed value
The data conversion of the black amount information of the black amount information of beginning form and expansion bit format.Here unprocessed form is first
Form, expands bit format and is the second form.
In Date Conversion Unit 13, carry out being mixed to get the black amount information of the second form in the following ways:
Produce the redundant data comprising certain bit；
The black amount information of this redundant data Yu the first form is carried out being mixed to get the black amount information of the second form.
Specifically, the operation that this redundant data carries out mixing with the black amount information of the first form is included following one
Or the combination of several operation:
A) redundant data is combined formation the as the black amount information of high position data or low data and the first form
The black amount information of two forms；
B) redundant data is entered according to a certain bit quantity with at least one in the black amount information of the first form
Row packet, the data after being grouped these subsequently carry out rearrangement superposition and form the black amount information of the second form；
Or
C) the black at least part of bit of amount information of at least part of bit in redundant data and the first form is patrolled
Collect computing and obtain the black amount information of the second form.
In another specific example, hybrid mode can be black amount information and the redundant data of unprocessed form
Simple superposition.
Black amount information in a raw is 16, expand the black amount information of bit format be 32 as a example by, such as Fig. 3
Shown in.When the black amount information 700 of the unprocessed form that imaging device writes to chip, Date Conversion Unit 13
Start and expand position process function, using the black amount information 700 of unprocessed form as high 16, by storage in chip
Redundant data such as preset data 800 is as low 16, and the expansion bit data 100 write storage forming 32 is single
Unit 12.When imaging device reads the black amount information in chip, Date Conversion Unit 13 reads memory element 12
32 expansion bit data 100 of middle storage, start information reverting and process function, and Date Conversion Unit 13 extraction is expanded
High 16 of bit data are sent to imaging device as 16 black amount information after reduction.
Certainly, the expansion bit data of 32 can also be by ink amount information 700 as low 16, preset data 800
As high 16 compositions.
It will be recognized by those skilled in the art that above-mentioned ink amount information and expand figure place and the overlay order of bit data
It is for the ease of understanding that the present invention illustrates, not limiting.
For strengthening the safety of ink amount information, hybrid mode can also is that the mixing of ink amount information and redundant data
When superposition, i.e. Date Conversion Unit 13 perform ink amount information expansion position process, ink is measured in information and redundant data
At least one be divided at least two groups, and the data after packet are ranked up rear superposition.
Still as a example by ink amount information is 16, expands bit data and be 32, as shown in Figure 4.
When the black amount information 710 of the unprocessed form that imaging device writes to chip, Date Conversion Unit 13 opens
Dynamic ink amount information expands position and processes function, ink is measured information 710 and is divided into three groups according to number of bits set in advance
711～713, the preset data 810 stored in chip is divided into four groups according to number of bits set in advance
811～814, then above-mentioned seven groups of data are formed according to default rule compositor superposition the expansion bit data of 32
110 write storage units 12.
When imaging device reads the black amount information in chip, Date Conversion Unit 13 reads in memory element 12
32 expansion bit data 110 of storage, start information reverting and process, carry out the expansion bit data 110 of 32 instead
It is sent to imaging device to the black amount information 710 disassembling reduction 16.
It will be recognized by those skilled in the art that above-mentioned ink amount information and expand the figure place of bit data, packet count and fold
Add sequentially only to facilitate understand the present invention and illustrate, do not limit.
For strengthening the safety of ink amount information, hybrid mode can also is that the computing of ink amount information and redundant data
When superposition, i.e. Date Conversion Unit 13 perform ink amount information expansion position process, ink is measured at least some of of information
Data perform in the logical operations such as "AND", "or" distance with at least some of data of redundant data
One or more.
Still as a example by ink amount information is 16, expands bit data and be 32, as shown in Figure 5.
When imaging device is to the black amount information 720 of chip write unprocessed form, Date Conversion Unit 13 starts
Ink amount information expands position and processes function, and ink is measured information 720 and the redundant data such as preset data of storage in chip
High 16 data 821 of 820 perform logic and operation, and ink is measured information 720 and the preset data of storage in chip
Low 16 data 822 of 820 perform logic XOR, and then operation result superposition forms the expansion position of 32
Data 120 write storage unit 12.
When imaging device reads the black amount information in chip, Date Conversion Unit 13 reads in memory element 12
32 expansion bit data 110 of storage, start information reverting and process, carry out the expansion bit data 120 of 32 instead
To computing, the black amount information 720 restoring 16 is sent to imaging device.Those skilled in the art should know
Road, above-mentioned ink amount information and the figure place of bit data that expands, the concrete logical operations of employing and the array of participation computing
Only to facilitate understand the present invention and illustrate, do not limit.
For strengthening the safety of ink amount information, hybrid mode can also is that above-mentioned simple superposition, mixing superposition,
One or more combination in computing superposition stacked system together has completed ink amount information and has expanded bit data
Between data conversion, perform logical operations, then by computing after with redundant data as measured by ink after information block
Data rearrange with redundant data.In present embodiment, the value of redundant data, redundant data and ink amount letter
Breath hybrid mode only chip designer or manufacturer it is known that can effectively prevent ink amount information leakage and
Distort, protection customer privacy and data safety.
As it has been described above, redundant data can include one or several in following item: data set in advance,
The true form of the black amount information of one form or radix-minus-one complement or complement code, pseudo random number, by storage in described memory element
At least some of data that the ink amount information reverting of the second form obtains.
When the true form of black amount information that redundant data is the first form, when imaging device writes to chip
The black amount information of the first form time, Date Conversion Unit 13 starts and expands position and process function, by the first form
Ink amount information carries out being mixed to get the black amount information of the second form with its true form.Write storage unit 12.Work as imaging
When device reads the black amount information in chip, Date Conversion Unit 13 reads second stored in memory element 12
The black amount information of form, starts information reverting and processes function, and the black amount information restoring the first form is sent to
Imaging device.When being radix-minus-one complement or the complement code of the black amount information of the first form for redundant data, data are changed
Unit 13, when starting expansion position and processing function, only need to calculate radix-minus-one complement or the complement code of the black amount information of the first form,
Then the black amount information of the first form is carried out being mixed to get the black amount information of the second form with its radix-minus-one complement or complement code
, here is omitted.Concrete hybrid mode can be above-mentioned a), b), c) one in hybrid mode or
The combination of several ways.
It is that the ink amount information reverting of the second form of storage in described memory element is obtained for redundant data
The situation of at least some of data, Date Conversion Unit 13 by this is received from imaging device
The mode that the black amount information from imaging device that ink amount information received with the last time mixes completes ink amount information
And the data conversion expanded between bit data.
The expansion bit data stored in the memory element 12 of chip 10 can restore imaging device respectively and write for the last time
The black amount information (being called for short current ink amount information) entered, and Polaroid relative to before last write operation
The black amount information (being called for short previous ink amount information) of device write.For the most used brand-new chip, its
In memory element 12, the expansion bit data of storage can restore current ink amount information and the sign characterizing full ink amount respectively
The previous ink amount information of Man Moliang.
When imaging device is to chip write ink amount information A2, Date Conversion Unit 13 starts ink amount information and expands position
Process, i.e. read expansion bit data B1 in memory element 12, restore current ink amount information A1, then incite somebody to action this
Secondary black amount information A2 from imaging device received mixes with current ink amount information A1, and composition figure place is more black
Expansion bit data B2 that amount information A2 figure place is many, updates the former expansion of storage in memory element 12 with expanding bit data B2
Bit data B1.So, ink amount information A2 is as new current ink amount information, and ink amount information A1 is as new
Previous ink amount information, expansion bit data B2 after can being updated restores.Again write to chip at imaging device
When entering ink amount information, current ink amount information B2 that reduction is made new advances by Date Conversion Unit 13 and the ink amount received
Information mixes, by that analogy.Concrete hybrid mode can be above-mentioned a), b), c) one in hybrid mode or
The combination of several ways.
The chip provided in the present embodiment can provide current ink amount information and previous ink amount information to imaging device,
Imaging device can be helped to carry out ink amount information checking, and can carry when current ink amount information write or bust this
The loss that ink amount information dropout causes is reduced for previous ink amount information.When imaging device read in chip current
During ink amount information, Date Conversion Unit 13 reads the expansion bit data of storage in memory element 12, starts information also
Original place is managed, and restores current ink amount information and is sent to imaging device；When imaging device read in chip previous
During ink amount information, Date Conversion Unit 13 reads the expansion bit data of storage in memory element 12, starts information also
Original place is managed, and restores previous ink amount information and is sent to imaging device.
In present embodiment, the hybrid mode only chip designer of two kinds of black amount information or manufacturer can obtain
Know, can effectively prevent the leakage of ink amount information and distort, protection customer privacy and data safety.
In addition to the processing mode that the example above illustrates, it is also possible to have other modes complete ink amount information and expand figure place
According to data conversion, such as utilize the existing cryptographic means such as SHA (SHA-1), by ink amount
Information is converted into the expansion bit data that the figure place of figure place more black amount information is many.It addition, above-mentioned processing mode can also phase
It is applied in combination mutually.
Such as, when imaging device is to chip write ink amount information, Date Conversion Unit 13 starts ink amount information
Expand position to process, the expansion bit data during i.e. Date Conversion Unit 13 reads memory element 12, restore current ink amount
Information, pseudorandom number generator 31 produces least one set pseudo random number, then this is received from one-tenth
As black amount information and the current ink amount information of device are each separated at least two groups, take the data after above-mentioned packet it
Between or packet after data and pseudo random number between perform logical operations two-by-two, and by the data generated, pseudo-with
Machine number is single according to the expansion bit data write storage that the figure place of default rule compositor composition figure place more black amount information is many
Unit 12；When imaging device reads the black amount information in chip, Date Conversion Unit 13 reads memory element 12
The expansion bit data of middle storage, starts information reverting and processes, according to expanding the operational rule of position process to expanding bit data
Carry out reverse computing, current ink amount information and previous ink amount information can be restored.
Although the embodiment that disclosed herein is as above, but described content is only to facilitate understand this
Bright and the embodiment that uses, is not limited to the present invention.Skill in any the technical field of the invention
Art personnel, on the premise of without departing from the spirit and scope that disclosed herein, can be formal implement
And in details, make any amendment and change, but the scope of patent protection of the present invention, still must be with appended right
Claim is defined in the range of standard.
Claims (11)
1. an ink box chip, it is characterised in that including:
Communications interface unit, it is for communicating with the imaging device installing print cartridge, to receive or to send the
The black amount information of one form；
Date Conversion Unit, is converted to the ink of the second form for the black amount information of the first form received is expanded position
Amount information, the bit number wherein comprised in the second form is more than the bit number comprised in the first form；
Memory element, for preserving and update the black amount information of described second form；Wherein
When imaging device needs the black amount information reading ink box chip, described Date Conversion Unit is additionally operable to deposit
The black amount information that ink amount information reverting is the first form of the second form of storage in storage unit.
2. ink box chip as claimed in claim 1, it is characterised in that described Date Conversion Unit is from storage
In unit in the black amount information of the second form of storage the black amount information of the first form of reduction be last from
The black amount information of imaging device reception and/or the previous black amount information received from imaging device.
3. ink box chip as claimed in claim 2, it is characterised in that in described Date Conversion Unit,
Obtain the black amount information of the second form in the following ways:
The black amount information calculating the first form accounts for the percentage ratio of total ink amount；
The bit number comprised in predetermined second form；And
The black amount information of the second form is obtained according to corresponding relation according to this percentage ratio and predetermined bit number.
4. ink box chip as claimed in claim 2, it is characterised in that in described Date Conversion Unit,
Obtain the black amount information of the second form in the following ways:
Produce the redundant data comprising certain bit；
The black amount information of this redundant data Yu described first form carries out being mixed to get the ink amount letter of the second form
Breath.
5. ink box chip as claimed in claim 4, it is characterised in that by this redundant data and described first
The operation that the black amount information of form carries out mixing include following one or more operation combinations:
A) using described redundant data as the black amount information group of high position data or low data with described first form
Close the black amount information forming the second form；Or
B) by least one in the black amount information of described redundant data and described first form according to number of bits
Amount is grouped, and subsequently these packets is carried out rearrangement superposition and forms the black amount information of the second form；Or
C) by least portion in the black amount information of at least part of bit in described redundant data and described first form
Proportion by subtraction spy carries out logical operations and obtains the black amount information of the second form.
6. the ink box chip as described in claim 4 or 5, it is characterised in that described redundant data includes
In following item one or several: data set in advance, the true form of black amount information of the first form, the first lattice
The radix-minus-one complement of black amount information of formula, the complement code of black amount information of the first form, pseudo random number, by described memory element
At least some of data that the ink amount information reverting of the second form of middle storage obtains.
7. ink box chip as claimed in claim 6, it is characterised in that described at least some of data include
The black amount information previously received from imaging device.
8. ink box chip as claimed in claim 6, it is characterised in that described Date Conversion Unit also includes
For producing the pseudorandom number generator of described pseudo random number.
9. such as claim 1-5, ink box chip according to any one of 7,8, it is characterised in that described data
Converting unit also includes logic encrypting module, is measured by the ink of the first form received by described logic encrypting module
Information is encrypted the black amount information generating the second form.
10. ink box chip as claimed in claim 6, it is characterised in that described Date Conversion Unit also includes
Logic encrypting module, is encrypted life by described logic encrypting module by the black amount information of the first form received
Become the black amount information of the second form.
11. 1 kinds the print cartridge just like the ink box chip according to any one of claim 1-10 is installed on it.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410019068.4A CN103862879B (en) | 2014-01-15 | 2014-01-15 | A kind of ink box chip and use the print cartridge of this chip |
| JP2016528879A JP6248354B2 (en) | 2014-01-15 | 2014-12-17 | Ink cartridge chip and ink cartridge using the chip |
| EP14878412.7A EP3090876B1 (en) | 2014-01-15 | 2014-12-17 | Ink cartridge chip and ink cartridge using chip |
| PCT/CN2014/094139 WO2015106616A1 (en) | 2014-01-15 | 2014-12-17 | Ink cartridge chip and ink cartridge using chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410019068.4A CN103862879B (en) | 2014-01-15 | 2014-01-15 | A kind of ink box chip and use the print cartridge of this chip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103862879A CN103862879A (en) | 2014-06-18 |
| CN103862879B true CN103862879B (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410019068.4A Active CN103862879B (en) | 2014-01-15 | 2014-01-15 | A kind of ink box chip and use the print cartridge of this chip |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3090876B1 (en) |
| JP (1) | JP6248354B2 (en) |
| CN (1) | CN103862879B (en) |
| WO (1) | WO2015106616A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103862879B (en) * | 2014-01-15 | 2016-08-17 | 珠海艾派克微电子有限公司 | A kind of ink box chip and use the print cartridge of this chip |
| CN104637543B (en) * | 2014-12-10 | 2019-02-19 | 珠海艾派克微电子有限公司 | Chip and the print cartridge for using the chip |
| CN105346256B (en) * | 2015-11-09 | 2017-03-22 | 杭州旗捷科技有限公司 | Printer chip, ink box and storage allocation method for printer chip |
| US10375273B1 (en) * | 2018-04-13 | 2019-08-06 | Lexmark International, Inc. | Chip and supply item for imaging device, including communication |
| CN113688067A (en) * | 2021-08-30 | 2021-11-23 | 上海汉图科技有限公司 | Data writing method, data reading method and device |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3090876A1 (en) | 2016-11-09 |
| CN103862879A (en) | 2014-06-18 |
| JP2016535868A (en) | 2016-11-17 |
| JP6248354B2 (en) | 2017-12-20 |
| WO2015106616A1 (en) | 2015-07-23 |
| EP3090876A4 (en) | 2017-12-20 |
| EP3090876B1 (en) | 2018-12-05 |
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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. |
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