CN102231054B - Chip, data communication method for chip, consumable container and imaging equipment - Google Patents
Chip, data communication method for chip, consumable container and imaging equipment Download PDFInfo
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Abstract
The invention provides a chip of a consumable container, which comprises a storage module, a control module, an interface module and a data safety module. The storage module is used for storing initial data, printing data, control data and key data; the interface module is used for realizing data communication between the storage module and the control module; the data safety module is respectively connected with the interface module and the control module, and is used for identifying a type and a content of data communicated between a printer and the chip, encrypting matched data in a selected safe mode and decrypting the data; the control module is connected with the storage module and is used for controlling data communication between the chip and the printer and the access operation of the data of the storage module and external data and sending a corresponding control command to the chip according to a safety module processing result so as to realize data communication; and the same keys are stored in the printer and the chip. The invention also provides a data communication method for the chip, the consumable container with the chip structure, and imaging equipment with the consumable container. The safety of the communication data of the chip can be protected.
Description
Technical field
The present invention relates to a kind of chip, chip data communication means, the consumable container that chip is installed and imaging device, specifically, relate to the data communications method of a kind of storage chip, storage chip and imaging device, the consumable container that this storage chip is installed and imaging device.
Background technology
Imaging device is the equipment of realizing the image transfer process, such as Xerox or printer, it is widely used in all kinds of office spaces, wherein, printer is owing to its diverse in function, easy-to-use being widely used in office space and the family, two kinds of type of printer commonly used are at present: ink-jet printer and laser printer, the consumptive material of ink-jet printer is ink, ink is contained in the print cartridge that can install and remove in the ink-jet printer, and ink-jet printer is that the small ink droplet of One's name is legion accurately is injected on the media that will print to form image or literal; The consumptive material of laser printer is carbon dust, and carbon dust is contained in the cartridge that can install and remove in the laser printer, laser printer with the carbon dust seal in the media to form image or literal.Print cartridge and cartridge general designation consumable container, mostly be provided with chip on the consumable container, the information of printer in being stored in the printer master controller, also store the consumable information that is complementary data message and consumes with printer at chip, can realize data communication between print cartridge or cartridge and the printer master controller by access chip.
Fig. 1 is the logical organization synoptic diagram that the existing consumable container of reflection is used chip, this chip comprises control module, memory module and interface module, control module is for the data communication between control chip and the printer and the accessing operation of control store module data and external data, memory module stores the data message relevant with consumable container, interface module be used for to realize between each module of chip and with the printer master controller between the communicating by letter of data message.Generally speaking, store consumptive material color, the primary datas such as the consumptive material capacity that fills in consumptive material trade name, consumable container (cartridge or print cartridge) model, build date, the consumable container in the memory module.When the printer start powers on, at first read and be installed on the stored related data information of chip on the consumable container, and compare with the corresponding information that remains in the printer, if the two unanimously then printer shows readyly, changes consumable container otherwise printer shows miscue and prompting user; Printer in use can the real time record date printed, printed material consumption or surplus, and above-mentioned data are write chip, then from chip, read again related data and compare verification with the above-mentioned data that write, if unanimously printer work on, otherwise printer prompts user changes consumable container, when the expression printing consumables surplus that reads from chip when printer was not enough, printer prompts user changed consumable container or stops to print.Therefore; printer is from power in use procedure; repeatedly carry out exchanges data with obtaining information or lastest imformation with the chip on the consumable container; yet; printer is carrying out in the data exchange process with chip; data message often can be subject to extraneous interference; as: power supply interference, electromagnetic interference (EMI) or external client maliciously crack attack etc.; thereby cause chip execution error operation or storage data to be made mistakes; and then make printer produce identification error and continue to carry out print command, cause the damage of print device.
Summary of the invention
Fundamental purpose of the present invention provides a kind of chip that improves the chip data communication reliability, protects chip data not to be damaged, to solve above-mentioned the deficiencies in the prior art part.
For achieving the above object, chip provided by the invention is installed on the consumable container, comprising:
Memory module is used for storage primary data and the print data relevant with consumable container;
The control module that is connected with memory module is for the data communication between control chip and the printer and the accessing operation of control store module data and external data;
Interface module is used for the data communication between realization chip memory module and the control module; And
Be connected to the data security module between interface module and the control module, be used for data type that identification printer and chip intercom mutually, content and the data to the identification coupling are being encrypted processing, the data under the selection safe mode are decrypted processing under the safe mode selecting; Store the data security module in the memory module in order to the control data of recognition data type, content, and the key data of encryption or decryption processing; Control module is according to the result of data security resume module, send corresponding control command to chip to realize data communication; Store the key data identical with this chip in the printer.
By upper scheme as seen; the data security module is set in the chip provided by the present invention; when the printer start powers on; whether chip conforms to this chip id code by the ID code in the mutual communication data content of data security Module recognition printer and chip; the data type that identification and analyzing printer ' send is read operation or write operation; and customer selecting needed protection and the data of identifying coupling are encrypted processing; the data that customer selecting is needed protection are decrypted processing; thereby prevented chip data from suffering malicious external attack and be cracked; chip is in the process that sends data; in case when causing data to change owing to external disturbance; whether the chip at first ID code in the verification msg content meets chip id; further analyzing the data type that sends reads or writes; and the transmission order is just processed and carried out to the data of only the identification id code being mated afterwards; during the chip receive data; at first the data of the corresponding safeguard protection pattern of user selection is decrypted; then whether the data after the contrast deciphering are consistent with former data; just carry out next step control operation in the consistent situation; thus; data security when having guaranteed data input and data output has improved the reliability of data communication.
Its further scheme is that the data security module comprises ID recognition unit, command encoding unit and proof of algorithm unit; Whether the ID recognition unit conforms to the chip id code for the ID code of identification from the data of printer; Which kind of action type is the data that command encoding unit is used for identifying from printer belong to; The proof of algorithm unit is used for the data of mating with chip under the selection safe mode are encrypted processing with the acquisition enciphered data, and to selecting the data under the safe mode to be decrypted processing with the acquisition raw data.
By ID recognition unit, command encoding unit and proof of algorithm unit, can realize respectively the content to communication data, identification and the encrypting and decrypting process of type, whether the ID code that the ID recognition unit can be identified in the printer transmission data conforms to the chip id code, and exports corresponding zone bit to the control module of chip according to recognition result; Command encoding unit can be judged the type of data, as: read operation or write operation; When ID recognition unit identification sends ID code in the data and conforms to the chip id code; the proof of algorithm unit is according to user selection; to being encrypted or decryption processing with the data that need protection; carry out next step data communication to obtain enciphered data or raw data; so; can prevent that chip is subject to malicious external attack, guarantee again the safety of chip data.
Its further scheme be, the proof of algorithm unit comprises data register, algorithm computing circuit and the key register that is linked in sequence, data after data register storage inputoutput data or the algorithm process, key register is deposited the key data that data are encrypted or decrypt operation is required, and the algorithm computing circuit reads key data and inputoutput data carries out computing from key register.
Can store the data that send or receive by data register, take out key from crypto key memory afterwards, transmission or receive data and key are carried out carrying out after the computing again next step processing by the algorithm computing circuit, can realize easily thus encryption or deciphering to communication data, the security that has improved communication data.
Another object of the present invention provides a kind of data communications method of chip; the method is after by the data security module type of communication data between printer and the chip and content being identified and analyzed; select corresponding data communication mode to carry out data communication by control module according to data content and user's request; the data security module is encrypted or decryption processing communication data under selected data communication mode, to realize backup and the protection to communication data.
By above scheme as seen; the method applied in the present invention is by content and the type of the communication data between identification and analyzing printer ' and the chip; simultaneously come further data to be encrypted or decryption processing according to user's request and discriminance analysis result; simply, use, and protected chip data not to be damaged.
Its further technical scheme is, identification and the analysis of communication data content comprised whether identification conforms to the chip id code from the ID code in the data of printer; Identification and analysis to the communication data type comprise which kind of action type identification belongs to from the data of printer; Encryption comprises the data that are complementary with chip under the safe mode are encrypted processes to obtain enciphered data, and decryption processing comprises the data under the safe mode are decrypted processes to obtain raw data.
Whether the ID code that identification sends in the data conforms to the chip id code, can guarantee that the data that conform to just can communicate, and have improved the efficient of data communication; The discriminance analysis that sends data type can be judged reading or write operation that printer sends, sends corresponding control command thereby be convenient to control module; According to the safe mode of user selection, when sending data, the data of coupling are encrypted processing after, carry out again the transmission of data, when receive data with data deciphering obtaining raw data, thereby improved the safety coefficient of data communication process.
Its further technical scheme be, data communication mode comprises general mode and safe mode, general mode is that communication data is directly sent or directly receives; Safe mode is when sending data, communication data is copied portion, be encrypted communication data after obtaining encrypting after the computing with key data, then the successively communication data transmission with communication data and after encrypting, when receive data, data are divided into encryption section and initial protion, will be after the encryption section decryption processing with initial protion relatively, in full accordly just carry out next step relevant control operation.
According to method provided by the present invention, the user is the pattern of the needs selection data communication of border situation factually, when if external environment condition is more stable, data can not being done any processing sends or receives, if external environment condition is complicated, when unstable, after can selecting safe mode that data are encrypted the data after raw data and the encryption are sent together, or after data are divided into encryption section and initial protion and receive, judge whether consistent, in consistent situation, carry out again next step control operation, so, both improve the efficient of chip data communication, guaranteed again the security of communication data under abominable external environment condition.
An also purpose of the present invention provides a kind of consumable container, comprises housing, and housing surrounds the cavity that holds consumptive material, and aforesaid chip is installed on the outer wall of housing.
Be equipped with on the consumable container provided by the present invention and can identify the chip that printer sends data content and type, chip adopts corresponding data communication mode according to matching result and user selection, therefore can guarantee the communication security of chip data on the consumable container.
An also purpose of the present invention provides a kind of imaging device, comprises image-generating unit and consumable container, and aforesaid chip is installed on the consumable container.
Imaging device provided by the present invention can guarantee the security of chip and printer communication data on its consumable container.
Description of drawings
Fig. 1 is the logical organization synoptic diagram of existing chip.
Fig. 2 is the logical organization synoptic diagram of the present invention's chip.
Fig. 3 is the logical organization synoptic diagram of the present invention's chip-stored module.
Fig. 4 is the logical organization synoptic diagram of the present invention's chip data security module.
Fig. 5 is the logical organization synoptic diagram of the present invention's chip control module.
Fig. 6 is the present invention's the logical organization synoptic diagram of chip algorithm authentication unit when the chip receive data.
Fig. 7 is the present invention's the logical organization synoptic diagram of chip algorithm authentication unit when chip sends data.
Fig. 8 is the structural representation of the present invention's cartridge.
Fig. 9 is the structural representation (the figure chips is not shown) of the present invention's printer.
Below in conjunction with drawings and Examples the present invention is further described.
Embodiment
Chip embodiment
Fig. 2 is the logical organization synoptic diagram that is installed on chip on the cartridge, as seen from Figure 2, chip comprises memory module, control module, interface module and the data security module that is linked in sequence, and the data of storing in the memory module comprise: the primary data relevant with cartridge; Print data; The data security module is used for the key data of control data and encryption or decryption processing of recognition data type, content.
Referring to Fig. 3, the primary data relevant with cartridge comprises the cartridge model, color, date of manufacture, the chip initiation information such as manufacturer code, print data comprises carbon dust consumption in the print procedure, the continuous datas such as number of print pages, the control data comprise model selection control data, the data communication byte arranges, the limited control data etc. that read or write of special data memory address, key data comprises data is encrypted or the data of key algorithm that decryption processing is used, memory module is the non-volatile memory cells of EEPROM, above-mentioned initialization data, control data and key data all are stored among the EEPROM; Interface module is used for the data communication between realization chip memory module and the control module; Control module is used for data communication between control chip and the printer and the accessing operation of control store module data and external data, and according to the result of data security resume module, send corresponding control command to chip to realize data communication.
The logical organization of control module is referring to Fig. 5, by the model selection register, realization is to the selection of data communication pattern, after the steering logic unit is judged the input data, export corresponding logic control order, DCCU data communication control unit is realized the Control on Communication to data between each module and the external unit, data byte arranges register and is used for depositing the byte figure place that data are set, data read control register is used for depositing the required data of read operation when the chip reading out data, the data write control register is used for depositing the required data of write operation when chip is write data.
Referring to Fig. 4, the data security module comprises the ID recognition unit, command encoding unit and proof of algorithm unit, whether the ID recognition unit conforms to the chip id code for the ID code of identification from the data of printer, which kind of action type is the data that command encoding unit is used for identifying from printer belong to, such as read command, write order, the proof of algorithm unit is used for the data of selecting to mate with chip under the safe mode are encrypted processing to obtain enciphered data, and to selecting the data under the safe mode to be decrypted processing to obtain raw data, the proof of algorithm unit comprises the data register that is linked in sequence, algorithm computing circuit and key register, data after data register storage inputoutput data or the algorithm process, key register storage is to the key data that data are encrypted or decrypt operation is required, and the algorithm computing circuit reads key data and inputoutput data carries out computing from key register.
Proof of algorithm unit concrete logical organization such as Fig. 6 when the chip receive data.
The concrete logical organization of proof of algorithm unit when chip sends data as shown in Figure 7.
Store the key data identical with chip in the printer, the printer start backward chip that powers on sends data, comprise: the ID code, command code, storage/reading out data and address, the ID code is used for the toner color of identification different colours, chip judges by the ID detecting unit of data security module whether the ID code that printer sends in the data of chip conforms to the ID code of chip, if meeting then further what judge that printer sends by command encoding unit is read command or write order, if have four cartridges, be separately installed with four chip blocks on it, when printer sends communication data, four chip blocks can be accepted the data that printer sends over simultaneously, but next step associative operation can be replied and carry out to the carbon powder box chip that only has the ID code to conform to, the chip controls unit carries out data transmission according to communication pattern and the judged result selected, if user selection safe mode (namely needing to carry out data protection) and ID code coupling, the proof of algorithm unit then to communication data be encrypted/decryption processing after, communicate with printer again; If user selection general mode (namely not needing to carry out data protection), control module then directly sends communication data or receives; If the ID code does not mate, control module is exported unmatched zone bit to printer, does not allow to carry out next step data communication operation.
Take Fig. 6 as example: if the printer transmission is write order and user selection safe mode, chip can arrange the data receiver byte according to data communication byte in the control store district, the steering logic unit then is that this communication data is divided into data A and data B two group data streams, in receive data A, control module can be read key data in the related register, when data B begins to receive, key data can step-by-step and is satisfied certain algorithm requirement and data B carries out computing, obtain at last the operation result identical with data A figure place, then result and data A are compared again, if both are identical, then send a bit low level answer signal to chip control module, otherwise send the high level answer signal; Whether chip control module just can transmit correct by monitor data by detecting answer signal; The proof of algorithm unit carries out the algorithm computing to received data B, and its result and data A compare, and the defined associative operation of if the same executive communication data writes etc. such as control command, data, otherwise do not carry out any operation.
When printer send be read command and user selection safe mode the time, chip at first can send raw data A, in sending data A process, the proof of algorithm unit obtains data B with data A and key data computing, after data A has sent, continue to send data B, as shown in Figure 7.Whether after printer received data B, chip just can be decrypted computing to enciphered data, then differentiate data and transmit correct.
A kind of conversion as chip embodiment of the present invention, the non-volatile memory cells of memory module can be the storage unit such as FLASH or FRAM ferroelectric memory, its function and chip logic structure are similar to the above embodiments, and this conversion can realize purpose of the present invention equally.
Another kind of conversion as chip embodiment of the present invention, can also include volatile memory cell in the memory module, the variable information relevant with cartridge is stored in this volatile memory cell, all the other information still are stored in non-volatile memory cells, its chip logic structure and function and said chip embodiment institute are similar, and this conversion equally also can realize purpose of the present invention.
Another conversion as chip embodiment of the present invention, said chip also can be used for print cartridge, the data of storing in the storage unit are the data relevant with print cartridge, and all the other functions and chip logic structure are similar to above-mentioned programmable chip, and this conversion equally also can realize purpose of the present invention.
Carbon powder box chip data communications method embodiment
After by the data security module of carbon powder box chip (hereinafter to be referred as chip) type and the content of communication data between printer (that is: laser printer) and the chip being identified, analyzed; select corresponding data communication mode to carry out data communication by control module according to data content and user's request; the data security module is encrypted or decryption processing communication data under the data communication mode of selecting, to realize backup and the protection to communication data.Identification to the communication data content comprises with analysis whether identification conforms to the chip id code from the ID code in the data of printer; Identification and analysis to the communication data type comprise which kind of action type identification belongs to from the data of printer; Encryption comprises the data of selecting to be complementary with chip under the safe mode are encrypted processes to obtain enciphered data, and decryption processing comprises processes to obtain raw data to selecting data under the safe mode to be decrypted.When printer is communicated by letter with chip data, selected the pattern of data communication according to the actual conditions needs by the user, be divided into safe mode and general mode, under general mode, communication data is not done any processing, directly data are sent or directly receive, that is: data are according to the 8bits(byte, hereinafter to be referred as bits) form; Safe mode is more reliable for the data that guarantee to store or read, prevent maloperation, when sending data, copy portion, be encrypted communication data after obtaining encrypting after the computing with key data, then the successively communication data transmission with communication data and after encrypting, when receive data, data are divided into encryption section and initial protion, will be after the encryption section decryption processing with initial protion relatively, in full accordly just carry out next step relevant control operation.
Chip can have two kinds of patterns to data that printer sends: general mode and safe mode.
General mode: chip sends data layout to printer and is: synchronous head+ID code+response bits+data+response bits+data+reply+... data can be the data such as memory unit address and manufacturer's Storage Box model in control command, the chip, build date, color, institute's package material quantity, its figure place can be 8bits or 8bits M times, and M is integer.
Printer receives above-mentioned data layout: data+data+..., there are not synchronous head and ID code, only have data, its data can be 8bits or 8bits M times, M is integer.
Safe mode: chip sends data layout to printer and is: synchronous head+ID code+response bits+data+response bits+data+reply+... wherein data are divided into data A and data B two parts, data A is 8bits or 8bits M times, M is integer, data B is the data that draw after the computing of data A process key, and its figure place is identical with data A.
Printer receives above-mentioned data layout: data+data+..., data are divided into data A and data B two parts, and data A is 8bits or 8bits M times, and M is integer, and data B is the data that draw after the computing of data A process key, its figure place is identical with data A.
The response bits of ID data heel is the 1bit data, replys output by chip, sends out the ID data when identical when chip id and printer, and chip sends a bit low-level data, with expression ID identification effectively, otherwise not with reply.Whether printer just can exist by faster identification cartridge.
Response bits for general mode data heel is that the expression chip has received data that meet data layout.For safe mode, the response bits of data heel is that the data that the expression chip receives are correct, Low level effective;
The key of storing in the printer must be kept at chip in key identical, match to guarantee the algorithm operation result.
Data are similar to sending, and when chip receives printer data, also have two kinds of patterns to select: general mode and safe mode:
Under general mode, printer sends data layout to chip: synchronous head+ID code+response bits+data+response bits+data+reply+... data can be the data such as memory unit address and manufacturer's Storage Box model in control command, the chip, build date, color, institute's package material quantity, its figure place can be 8bits or 8bits M times, and M is integer.
Chip receives above-mentioned data layout: data+data+..., there are not synchronous head and ID code, only have data, its data can be 8bits or 8bits M times, M is integer.
Under safe mode: printer sends data layout to chip and is: synchronous head+ID code+response bits+data+response bits+data+reply+... wherein data are divided into data A and data B two parts, data A is 8bits or 8bits M times, M is integer, data B is the data that draw after the computing of data A process key, and its figure place is identical with data A.
Chip receives above-mentioned data layout: data+data+..., data are divided into data A and data B two parts, and data A is 8bits or 8bits M times, and M is integer, and data B is the data that draw after the computing of data A process key, its figure place is identical with data A.
Under safe mode, data are comprised of two parts: data A and data B, data A is raw data, as: the data such as control command, memory unit address data or manufacturer's Storage Box model, build date, color, institute's package material quantity, data can be 8bits or 8bits M times, M is integer, and data B is the data that draw after the computing of data A process algorithm factor, and its figure place is identical with data A.
Chip is read in the control module in the register powering on and will control the data storage area data in 8 clock period, then control module can be selected different control modes according to register data, the control data have communication pattern to select data, data communication byte that data, the limited read/write control of special data memory address data are set, and model selection has general mode and safe mode.
The setting of data communication byte is the setting of raw data figure place, can be the integral multiple of 8bits or 8bits.Data are read to control and arranged is that the data of controlling the different addresses of data memory area read, " 1 " sign allows to read, " 0 " sign forbids reading, as: XXXXXX01 is the binary number of a 8bits control read operation, bit0 is 1, expression address 00H data allow to read, and Bit1 is 0, and expression is forbidden address 01H data are carried out read operation.It is similar that data are write the method that control reads to control with data, it is that the data of controlling the different addresses of data memory area write, " 1 " sign allows to write, " 0 " sign forbids writing, such as: XXXXXX01 is the binary number of a 8bits control read operation, and bit0 is 1, and expression address 00H data allow to be rewritten, Bit1 is 0, and expression is forbidden address 01H data are carried out write operation.Data read/write control register figure place can be set to 8bit, or the integral multiple of 8bit.
Chip arranges from control relevant position, data storage area reading out data communication byte after powering on that data, data read to control data, data are write the control data to corresponding registers, as shown in Figure 7.
A kind of conversion as chip data communication means embodiment of the present invention, can also adopt other keys to carry out calculation process between data A and the data B, only need to guarantee that the key data in the chip gets final product with the key data in the printer is consistent, this conversion equally also can realize purpose of the present invention.
This method not only can be the data communication of carbon powder box chip and laser printer, can also be for the data communication between ink box chip and the ink-jet printer, and its procedure is same as described above.
Cartridge embodiment
Carbon powder cartridge for laser printer, its structural representation sketch as shown in Figure 8, cartridge comprises housing, housing surrounds the cavity that holds carbon dust, and the as above chip described in the embodiment 1 is installed on the outer wall of housing.
Printer embodiment
The laser printer structural representation comprises image-generating unit and cartridge referring to Fig. 9, and the as above described chip of embodiment is installed on the cartridge.
The invention is not restricted to above-described embodiment and conversion, other also should be included in the protection domain of claim of the present invention based on technical solution of the present invention and without prejudice to the structural change of the object of the invention.
Claims (10)
1. chip comprises
Memory module is used for storage primary data and the print data relevant with consumable container;
The control module that is connected with described memory module is for the data communication between control chip and the printer and the accessing operation of control store module data and external data;
Interface module, be used for to realize between memory module described in the chip and the described control module data communication and and described printer between data communication;
It is characterized in that:
Described chip also comprises the data security module that is connected between described interface module and the described control module, is used for identifying data type that described printer and described chip intercom mutually, content and under the safe mode data with described chip coupling is encrypted processing or data are decrypted processing selecting;
Also store described data security module in the described memory module in order to the control data of recognition data type, content, and the key data of encryption or decryption processing;
Described control module is according to the result of described data security resume module, send corresponding control command to described chip to realize data communication.
2. chip as claimed in claim 1 is characterized in that:
Described data security module comprises ID recognition unit, command encoding unit and proof of algorithm unit;
Whether described ID recognition unit conforms to described chip id code for the ID code of identification from the data of described printer;
Which kind of action type is the data that described command encoding unit is used for identifying from described printer belong to;
Described proof of algorithm unit is used for the data of mating with described chip under the described safe mode are encrypted processing with the acquisition enciphered data, and the data under the described safe mode are decrypted processing to obtain raw data.
3. chip as claimed in claim 2 is characterized in that:
Described proof of algorithm unit comprises data register, algorithm computing circuit and the key register that is linked in sequence, data after described data register storage inputoutput data or the algorithm process, the storage of described key register is to the key data that data are encrypted or decrypt operation is required, and described algorithm computing circuit reads key data and described inputoutput data carries out computing from described key register.
4. chip data communication means, described chip comprises
Memory module is used for storage primary data and the print data relevant with consumable container;
The control module that is connected with described memory module is for the data communication between control chip and the printer and the accessing operation of control store module data and external data;
Interface module, be used for to realize between memory module described in the chip and the described control module data communication and and described printer between data communication;
It is characterized in that:
Described chip also comprises the data security module that is connected between described interface module and the described control module, is used for identifying data type that described printer and described chip intercom mutually, content and under the safe mode data with described chip coupling is encrypted processing or data are decrypted processing selecting;
Also store described data security module in the described memory module in order to the control data of recognition data type, content, and the key data of encryption or decryption processing;
Described control module is according to the result of described data security resume module, send corresponding control command to described chip to realize data communication;
This chip data communication means is: after by described data security module the type of communication data between described printer and the described chip and content being identified and analyzed; select corresponding data communication mode to carry out data communication by described control module according to data content and user's request; described data security module is encrypted or decryption processing described communication data under selected data communication mode, to realize backup and the protection to communication data.
5. chip data communication means as claimed in claim 4 is characterized in that:
Described identification to the communication data content comprises with analysis whether identification conforms to described chip id code from the ID code in the data of described printer;
Described identification and analysis to the communication data type comprises which kind of action type identification belongs to from the data of described printer;
Described encryption comprises the data that are complementary with described chip under the described safe mode are encrypted processes to obtain enciphered data, and described decryption processing comprises the data under the described safe mode are decrypted processes to obtain raw data.
6. such as claim 4 or 5 described chip data communication meanss, it is characterized in that:
Described data communication mode comprises general mode and safe mode;
Described general mode is that described communication data is directly sent or directly receives;
Described safe mode is
When sending data, described communication data is copied portion, be encrypted communication data after obtaining encrypting after the computing with key data, then successively the communication data after described communication data and the described encryption is sent;
When receive data, data are divided into encryption section and initial protion, will be after the described encryption section decryption processing with described initial protion relatively, in full accordly just carry out next step relevant control operation.
7. consumable container comprises housing, and described housing surrounds the cavity that holds consumptive material, it is characterized in that:
Chip as claimed in claim 1 is installed on the outer wall of described housing.
8. consumable container as claimed in claim 7 is characterized in that:
Described data security module comprises ID recognition unit, command encoding unit and proof of algorithm unit;
Whether described ID recognition unit conforms to described chip id code for the ID code of identification from the data of described printer;
Which kind of action type is the data that described command encoding unit is used for identifying from described printer belong to;
Described proof of algorithm unit is used for the data of mating with described chip under the described safe mode are encrypted processing with the acquisition enciphered data, and the data under the described safe mode are decrypted processing to obtain raw data.
9. imaging device comprises image-generating unit and consumable container,
It is characterized in that:
Chip as claimed in claim 1 is installed on the described consumable container.
10. imaging device as claimed in claim 9 is characterized in that:
Described data security module comprises ID recognition unit, command encoding unit and proof of algorithm unit;
Whether described ID recognition unit conforms to described chip id code for the ID code of identification from the data of described printer;
Which kind of action type is the data that described command encoding unit is used for identifying from described printer belong to;
Described proof of algorithm unit is used for the data of mating with described chip under the described safe mode are encrypted processing with the acquisition enciphered data, and the data under the described safe mode are decrypted processing to obtain raw data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110152726 CN102231054B (en) | 2011-06-08 | 2011-06-08 | Chip, data communication method for chip, consumable container and imaging equipment |
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| US11427010B2 (en) | 2018-12-03 | 2022-08-30 | Hewlett-Packard Development Company, L.P. | Logic circuitry |
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| WO2020117194A1 (en) | 2018-12-03 | 2020-06-11 | Hewlett-Packard Development Company, L.P. | Logic circuitry |
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| CN114083913B (en) * | 2021-11-02 | 2022-09-16 | 珠海艾派克微电子有限公司 | Chip, consumable box and data transmission method |
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| CN115017095B (en) * | 2022-08-05 | 2022-11-08 | 微传智能科技（常州）有限公司 | Current output type AK protocol wheel speed chip communication system and method |
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