WO2017080281A1 - 一种打印机芯片、墨盒、和打印机芯片存储分配方法 - Google Patents

一种打印机芯片、墨盒、和打印机芯片存储分配方法 Download PDF

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WO2017080281A1
WO2017080281A1 PCT/CN2016/096488 CN2016096488W WO2017080281A1 WO 2017080281 A1 WO2017080281 A1 WO 2017080281A1 CN 2016096488 W CN2016096488 W CN 2016096488W WO 2017080281 A1 WO2017080281 A1 WO 2017080281A1
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Prior art keywords
printer
data
chip
storage unit
data storage
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PCT/CN2016/096488
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English (en)
French (fr)
Inventor
章征东
孙云
彭新平
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杭州旗捷科技有限公司
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Application filed by 杭州旗捷科技有限公司 filed Critical 杭州旗捷科技有限公司
Priority to ES16863459T priority Critical patent/ES2894694T3/es
Priority to US15/774,907 priority patent/US20180326735A1/en
Priority to EP16863459.0A priority patent/EP3375615B1/en
Publication of WO2017080281A1 publication Critical patent/WO2017080281A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/14—Protection against unauthorised use of memory or access to memory
    • G06F12/1416—Protection against unauthorised use of memory or access to memory by checking the object accessibility, e.g. type of access defined by the memory independently of subject rights
    • G06F12/1425—Protection against unauthorised use of memory or access to memory by checking the object accessibility, e.g. type of access defined by the memory independently of subject rights the protection being physical, e.g. cell, word, block
    • G06F12/1433—Protection against unauthorised use of memory or access to memory by checking the object accessibility, e.g. type of access defined by the memory independently of subject rights the protection being physical, e.g. cell, word, block for a module or a part of a module
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/14—Protection against unauthorised use of memory or access to memory
    • G06F12/1416—Protection against unauthorised use of memory or access to memory by checking the object accessibility, e.g. type of access defined by the memory independently of subject rights
    • G06F12/1425—Protection against unauthorised use of memory or access to memory by checking the object accessibility, e.g. type of access defined by the memory independently of subject rights the protection being physical, e.g. cell, word, block
    • G06F12/1441—Protection against unauthorised use of memory or access to memory by checking the object accessibility, e.g. type of access defined by the memory independently of subject rights the protection being physical, e.g. cell, word, block for a range
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/44—Program or device authentication
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
    • G06F2212/10—Providing a specific technical effect
    • G06F2212/1052—Security improvement

Definitions

  • the invention is in the field of inkjet printing, and in particular relates to a printer chip, an ink cartridge, and a printer chip storage and distribution method.
  • printing devices have become an indispensable device in office activities.
  • Common printing devices include laser printing and inkjet printing.
  • inkjet printing inkjet printers and ink cartridges installed in printers are included.
  • inkjet printers it is necessary to periodically replace consumables, such as ink cartridges.
  • the ink cartridge needs to be replaced when the ink volume of the ink cartridge is exhausted.
  • the replaceable device such as the ink cartridge contains printing parameters, which are often stored in the chip, and the printer chip is mounted in a replaceable device such that the device is in each After the replacement, the printer host can obtain the data in the first time, thus ensuring good printing results.
  • the purpose of the invention is to increase the authorization flag and the matching authorization verification, so that the data can be re-covered and read and used normally, and the service life of the printer chip is prolonged on the basis of ensuring data stability and reliability.
  • a printer chip including a chip control circuit, a data storage unit for storing data, a communication unit for communicating with the printer; the storage unit and the The communication unit is respectively electrically connected to the chip control circuit; and the feature is:
  • the data storage unit includes an authorization flag bit, and the authorization flag bit respectively places the data storage unit in an unauthorized state and an authorization state according to different values;
  • the data storage unit when in the unauthorized state, includes an unprotected portion that can be read or written by the control circuit, a protected portion that can be read by the control circuit but cannot write data, and can be used a one-time portion of the data that the control circuit reads and can only write once;
  • the non-protected portion is included when the data storage unit is in an authorized state
  • the control circuit includes a key unit, an operation unit, and a read/write unit;
  • the operation unit is configured to calculate, by using the key data stored in the key unit, the input data sent by the printer host to obtain a check code 1;
  • the operation unit is further configured to compare the check code 2 sent by the printer host with the check code one, and Adapting the authorization flag bit in the data storage unit according to the comparison result.
  • the printer chip is mounted on the replaceable component, and the replaceable component is not specifically authorized when in the normal use state, that is, the data on the authorization flag bit places the data storage unit in an unauthorized state.
  • the data storage unit is divided into a plurality of areas including at least the non-protected portion, the protected portion, and the disposable portion, and the difference between the three is a difference between read and write permissions, and the non-protected portion allows printing
  • a device such as a printer host reads and writes data, which is a common data operation port.
  • the data stored in the protection portion is input when first used, and can only be read, cannot be modified or written, for example, when the printer chip is installed in On the ink cartridge, the data stored in the protection portion may be the first use date of the ink cartridge, and once written, it can only be read and cannot be modified, and the user can estimate the validity period of the ink cartridge according to the first use date of the ink cartridge;
  • the one-time portion allows writing of data, but each data bit can only be written once, for example, specifying data for the one-time portion
  • the storage is binary, which can be written as 1 from 0, but once written as 1, it cannot be written as 0. This is also very practical in practice. For example, this part of the data contains multiple bits, each of which corresponds to the above.
  • a part of the ink cartridge when the amount of ink is used up, the data 0 is written as 1, the user can obtain the data of the remaining ink amount according to the data of the part, in addition, the user can also write the ink cartridge protection machine sequence.
  • Information such as a number; the user can divide the data storage unit into N data blocks, each data block corresponding to a corresponding address, and the data blocks and the addresses correspond to different rights, thereby forming a data block, an address, and a permission Corresponding table, when the control circuit is to perform corresponding operations on the data storage unit, the data storage unit may be addressed through a set table, and the corresponding authority and corresponding address are found to be read and written.
  • the permission is 0, is read-only, corresponding to the protection part, the authority is 1, is writable, corresponding to the non-protected part, the authority is 3, indicating bit Can be changed from 0 to 1, corresponding to the one-time part, in addition, there is a permission of 2, the rule is that only data larger than the original data can be written, which can be used to record the number of prints in the actual operation, along with the printer The use of the number of times of printing increases, it is impossible to become smaller, the user can estimate the remaining amount of ink by recording the number of times of printing, etc.; when the life of the replaceable part is over and needs to be replaced, it is necessary to enter a special authorized verification step.
  • the specific operation mode is that the printer host sends an instruction, the printer chip feeds back a random data, and the operation unit stores the random data and the key unit according to the instruction.
  • the key data is calculated to obtain the check code one.
  • the printer host also calculates the check code 2 according to the instruction and the random data, and then the check code is Transmitting to the printer chip, the operation unit compares the check code one with the check code two, and if different, the specific authorization does not pass, if the phase is The specific authorization is passed, and the authorization flag is changed at this time, thereby changing the state of the entire data storage unit, and the data storage unit is changed to an unprotected portion, that is, the new data can be re-entered.
  • a printer chip can be reused for extended life.
  • the disposable portion when the data storage unit is in an unauthorized state, includes an ink cartridge Maximum capacity data.
  • the disposable portion when the data storage unit is in an unauthorized state, the disposable portion further includes ink cartridge protection machine serial number data and protection effect data.
  • the protection portion when the data storage unit is in an unauthorized state, includes the date of first use of the ink cartridge.
  • the computing unit performs the operation by using the data data sent by the printer host and the key data stored in the key unit as an AES algorithm, a DES algorithm, an EDES algorithm, or a 3DES algorithm.
  • An ink cartridge is provided with the printer chip.
  • a print head is provided with the printer chip.
  • a printer comprising a printhead and an ink cartridge, the printhead being provided with the printer chip, the printer chip described in the ink cartridge.
  • a printer chip storage allocation method includes a printer host and a replaceable device, the printer host includes a host computing unit, and the replaceable device is provided with the printer chip, and the printer chip storage allocation method comprises the following steps:
  • Step 1 Authorize the request to send the steps:
  • the printer host issues an authorization request command to the printer chip
  • Step 2 Return the random number:
  • the printer chip generates random data and sends the data to the printer host through the communication unit;
  • Step 3 Check code generation steps:
  • the printer chip takes the random data as an input, performs encryption operation through the key data stored in the key unit, and obtains the check code one, and the host computing unit in the printer host adopts the same Calculating mode, obtaining the check code two;
  • Step 4 Check code comparison steps:
  • the printer host sends the check code 2 to the printer chip, and the printer chip compares the check code 1 with the check code 2;
  • Step 5 Authorization mark marking steps:
  • the authorization mark is marked as valid, and the data storage unit enters an authorization state. If the data storage unit is inconsistent, the data storage unit is still unauthorized. status.
  • the printer host issues an authorization request command to the printer chip, for example, sending 0x60 0x00 0x98, where 0x60 is the chip address of the printer chip, and 0x00 0x98 is an authorization request command, the printer chip After receiving, go to step 2 and return to the authorized random number.
  • step three the printer chip takes the random data as an input, performs encryption operation through the key data stored in the key unit, and obtains the check code one, the printer
  • the host computing unit in the host adopts the same operation mode to obtain the check code 2; then proceeds to step 4, the printer host sends the check code 2 to the printer chip, for example, the sending data is: 0x60 0x00 0x78 0x24 0x35 0x69 0x23 0x74 0x13 0x86 0x89 0x24 0x35 0x69 0x23 0x74 0x13
  • the authorization flag bit does not change, that is, the specific authorization fails, and if the data is consistent, the The authorization flag bit is changed, and the specific authorization is passed, and the non-protected portion, the protected portion, and the disposable portion of the original data storage unit become non-protected portions.
  • the encryption operation method adopted by the printer host and the printer chip is an AES algorithm, a DES algorithm, an EDES algorithm or a 3DES algorithm.
  • the authorization request command sent by the printer host further includes chip address data of the printer chip.
  • the input data of the encryption operation method includes fixed data fixed to 00 in addition to the random data.
  • the replaceable device is an ink cartridge or printhead.
  • the present invention has the following beneficial effects:
  • the permission of the data storage unit can be rewritten to become an unprotected part, and the data can be completely re-entered to extend the service life of the printer chip.
  • the specific authorization authentication adopts the AES algorithm, the DES algorithm, the EDES algorithm or the 3DES algorithm, and has high security.
  • the input information of the specific authorization authentication is input from the command sent by the printer host and the random data generated by the printer chip, and the key data stored in the original is used, the authentication calculation process is rigorous, and the data security is maintained to a high degree.
  • Figure 1 is a schematic view of Embodiment 1;
  • Embodiment 2 is a schematic diagram of the data storage unit in Embodiment 1 under no specific authorization
  • 3 is a data block diagram of steps 1 through 5 in the first embodiment.
  • Embodiment 1 as shown in FIGS. 1 and 2, a printer chip including a chip control circuit, a data storage unit for storing data, a communication unit for communicating with the printer, the storage unit and the communication unit Electrically connected to the chip control circuit respectively; characterized in that:
  • the data storage unit includes an authorization flag bit, and the authorization flag bit respectively places the data storage unit in an unauthorized state and an authorization state according to different values;
  • the data storage unit when in the unauthorized state, includes an unprotected portion that can be read or written by the control circuit, a protected portion that can be read by the control circuit but cannot write data, and can be used a one-time portion of the data that the control circuit reads and can only write once;
  • the non-protected portion is included when the data storage unit is in an authorized state
  • the control circuit includes a key unit, an operation unit, and a read/write unit;
  • the operation unit is configured to calculate, by using the key data stored in the key unit, the input data sent by the printer host to obtain a check code 1;
  • the operation unit is further configured to compare the check code 2 sent by the printer host with the check code one, and adapt the authorization flag bit in the data storage unit according to the comparison result.
  • the printer chip is mounted on the replaceable component, and the replaceable component is not specifically authorized when in the normal use state, that is, the data on the authorization flag bit places the data storage unit in an unauthorized state.
  • the data storage unit is divided into a plurality of areas including at least the non-protected portion, the protected portion, and the disposable portion, and the difference between the three is a difference between read and write permissions, and the non-protected portion allows printing
  • a device such as a printer host reads and writes data, which is a common data operation port.
  • the data stored in the protection portion is input when first used, and can only be read, cannot be modified or written, for example, when the printer chip is installed in On the ink cartridge, the data stored in the protection portion may be the first use date of the ink cartridge, and once written, it can only be read and cannot be modified, and the user can estimate the validity period of the ink cartridge according to the first use date of the ink cartridge;
  • the one-time portion allows writing of data, but each data bit can only be written once, for example, specifying data for the one-time portion Storage are binary, can be written from 0 to 1, but once written, no further Can write 0, which is also very strong in practice. For example, this part of the data contains multiple bits, each of which corresponds to a part of the ink cartridge.
  • the data 0 is written as 1
  • the user can obtain the data of the remaining ink amount.
  • the user can also write information such as the ink cartridge protection machine serial number; the user can divide the data storage unit into N data blocks. Each data block corresponds to a corresponding address, and the data blocks and the addresses correspond to different rights, thereby forming a corresponding table of data blocks, addresses, and rights, and the control circuit is required to perform corresponding operations on the data storage unit.
  • the permission is 0, and is read-only, corresponding to the Protection part, the permission is 1, is writable, corresponding to the non-protected part, the authority is 3, indicating that the bit can only change from 0 to 1, corresponding to the one-time part, in addition,
  • the permission is 2, the rule is that only the data larger than the original data can be written. This can be used to record the number of prints in the actual operation. With the use of the printer, the number of prints is increased one by one, and it is impossible to become smaller.
  • the user can record The number of prints is used to estimate information such as the remaining amount of ink; when the life of the replaceable component is over and needs to be replaced, a special authorization verification step is required.
  • the specific operation mode is that the printer host sends an instruction.
  • the printer chip feeds back a random data, and the operation unit performs calculation according to the instruction, the random data, and the key data stored in the key unit to obtain the check code one, and the same,
  • the printer host also calculates the check code 2 according to the instruction and the random data, and then the check code 2 is transmitted to the printer chip, and the operation unit compares the check code one And the check code 2, if different, the specific authorization does not pass, if the same, the specific authorization is passed, and the authorization flag is changed at this time, And the state transition of the entire data storage unit, the data storage unit are rendered non-protection portion, i.e., new data can be re-entered, the kind of printer chip may be reused, and prolong life.
  • the disposable portion When the data storage unit is in an unauthorized state, the disposable portion includes ink cartridge maximum capacity data, ink cartridge protection machine serial number data, and protection effect data.
  • the protection portion includes the date of first use of the ink cartridge when the data storage unit is in an unauthorized state.
  • the operation unit calculates the data data sent by the printer host and the key data stored in the key unit as an AES algorithm, a DES algorithm, an EDES algorithm or a 3DES algorithm.
  • AES algorithm a DES algorithm
  • EDES algorithm a 3DES algorithm.
  • the international standard AES algorithm, DES algorithm, EDES algorithm or 3DES algorithm has proved that in the case of key security, it cannot be copied and copied, and the calculation and authentication process of specific authorization is guaranteed.
  • a printer chip storage allocation method includes a printer host and a replaceable device, the printer host includes a host computing unit, and the replaceable device is provided with the printer chip, and the printer chip storage allocation method comprises the following steps:
  • Step 1 Authorize the request to send the steps:
  • the printer host issues an authorization request command to the printer chip
  • Step 2 Return the random number:
  • the printer chip generates random data and sends the data to the printer host through the communication unit;
  • Step 3 Check code generation steps:
  • the printer chip takes the random data as an input, performs encryption operation through the key data stored in the key unit, and obtains the check code one, and the host computing unit in the printer host adopts the same Calculating mode, obtaining the check code two;
  • Step 4 Check code comparison steps:
  • the printer host sends the check code 2 to the printer chip, and the printer chip compares the check code 1 with the check code 2;
  • Step 5 Authorization mark marking steps:
  • the authorization mark is marked as valid, and the data storage unit enters an authorization state. If the data storage unit is inconsistent, the data storage unit is still unauthorized. status.
  • the printer host issues an authorization request command to the printer chip, for example, sending 0x60 0x00 0x98, where 0x60 is the chip address of the printer chip, and 0x00 0x98 is an authorization request command, the printer chip After receiving, go to step 2 and return to the authorized random number.
  • step three the printer chip takes the random data as an input, performs encryption operation through the key data stored in the key unit, and obtains the check code one, the printer
  • the host computing unit in the host adopts the same operation mode to obtain the check code 2; then proceeds to step 4, the printer host sends the check code 2 to the printer chip, for example, the sending data is: 0x60 0x00 0x78 0x24 0x35 0x69 0x23 0x74 0x13 0x86 0x89 0x24 0x35 0x69 0x23 0x74 0x13
  • the authorization flag bit does not change, that is, the specific authorization fails, and if the data is consistent, the The authorization flag bit is changed, and the specific authorization is passed, and the non-protected portion, the protected portion, and the disposable portion of the original data storage unit become non-protected portions.

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  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Software Systems (AREA)
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  • Ink Jet (AREA)
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Abstract

一种打印机芯片、设有该打印机芯片的墨盒、和打印机芯片存储分配方法，其中打印机芯片包括芯片控制电路，用于存储数据的数据存储单元，以及用于与打印机通信的通讯单元，数据存储单元和通讯单元分别与芯片控制电路电连接。数据存储单元包含授权标志位，授权标志位根据数值不同将数据存储单元分别置于非授权状态与授权状态。打印机芯片中通过增设授权标志位和与之匹配的授权验证，在保证数据稳定和可靠的基础上，使得芯片数据可以重新覆盖读写，正常使用，延长打印机芯片的使用寿命。

Description

一种打印机芯片、墨盒、和打印机芯片存储分配方法 技术领域
本发明为喷墨打印领域，具体涉及一种打印机芯片、墨盒、和打印机芯片存储分配方法。
背景技术
随着办公自动化的普及，打印设备已经是办公活动中不可缺少的设备，常见的打印设备包括激光打印和喷墨打印，在喷墨打印中，包含喷墨打印机和安装在打印机中的墨盒。
在喷墨打印机使用过程中，需要对耗材，如墨盒，进行定期更换。墨盒的墨量耗尽时需要更换墨盒，诸如墨盒这样的可更换设备都包含打印参数，这些打印参数往往都存储在芯片中，该种打印机芯片安装墨盒这样的可更换设备中，使得设备在每次更换之后，打印机主机都能第一时间获取这些数据，从而保证良好的打印效果。
在现有技术中，为了保证信息的稳定和不可更改，信息往往为一次性写入打印机芯片，这意味着芯片只可使用一次，无法复用，这对芯片的使用价值造成了浪费。
发明内容
本发明的目的是通过增设授权标志位和与之匹配的授权验证，在保证数据稳定和可靠的基础上，使得芯片数据可以重新覆盖读写，正常使用，延长打印机芯片的使用寿命。
本发明的上述技术目的是通过以下技术方案得以实现的：一种打印机芯片，包括芯片控制电路，用于存储数据的数据存储单元，用于与打印机通信的通讯单元；所述存储单元和所述通讯单元分别与所述芯片控制电路电连接；其特征在于：
所述数据存储单元包含授权标志位，所述授权标志位根据数值不同将所述数据存储单元分别置于非授权状态与授权状态；
所述数据存储单元处于所述非授权状态时包含可被所述控制电路读取或写入数据的非保护部分、可被所述控制电路读取但不能写入数据的保护部分和可被所述控制电路读取且只能写入一次数据的一次性部分；
所述数据存储单元处于授权状态时包含所述非保护部分；
所述控制电路包含密匙单元、运算单元和读写单元；
所述运算单元用于将打印机主机发送来的输入数据通过存储在所述密匙单元里的密匙数据运算得到校验码一；
所述运算单元还用于将所述打印机主机发送来的校验码二与所述校验码一进行比对，并 根据比对结果改编所述数据存储单元中的所述授权标志位。
所述打印机芯片安装在可更换部件上，当所述可更换部件在普通使用状态时并没有经过特定授权，即所述授权标志位上的数据将所述数据存储单元置于非授权状态，此时，数据存储单元分成了若干区域，至少包含了所述非保护部分、所述保护部分和所述一次性部分，三者之间的区别为读写权限的区别，所述非保护部分允许打印设备如打印机主机读取并写入数据，是常见的数据操作端口，所述保护部分存储的数据在首次使用时输入，只能读取，不能修改或写入，例如当所述打印机芯片安装在墨盒上，所述保护部分存储的数据可以为所述墨盒的首次使用日期，一旦写入就只能读取不能修改，用户可以根据所述墨盒的首次使用日期来推算所述墨盒的使用有效期；所述一次性部分允许写入数据，但是每个数据位只能写一次，例如规定所述一次性部分的数据存储都为二进制，可以从0写为1，但一旦写为1，就不能写会0，这在实际中也有非常强的应用性，例如这部分数据包含多位，每一位都对应所述墨盒的一部分，当这部分墨量用完，则将数据0写为1，用户根据这个部分的数据就可以得出剩余墨量的数据，除此之外，用户还可以写入墨盒保护机器序列号等信息；用户可以将所述数据存储单元划分为N个数据块，每个数据块对应相应的地址，而这些数据块和这些地址对应着不同权限，从而形成一个数据块、地址、权限的对应表格，在所述控制电路要对所述数据存储单元进行相应的操作时，可以对所述数据存储单元通过设定的表格中进行寻址，找到对应的权限和对应的地址，进行读写操作；这里提供一个实施例，权限为0，为只读，对应所述保护部分，权限为1，为可写，对应所述非保护部分，权限为3，表示bit只可以从0变成1，对应所述一次性部分，此外，还有一个权限是2，规则为只可以写比原数据大的数据，这在实际操作中可以用来记载打印次数，随着打印机的使用，打印次数逐次升高，不可能变小，用户可以通过记录打印次数来估计墨水的剩余量等信息；当所述可更换部件寿命结束，需要更换时，则需要进入特别授权的验证步骤，具体的操作方式是，所述打印机主机会发送过来一则指令，所述打印机芯片会回馈一则随机数据，所述运算单元根据该则指令、所述随机数据和存储在所述密匙单元的密匙数据进行计算，得到所述校验码一，同样的，所述打印机主机同样根据该则指令和所述随机数据计算得到所述校验码二，随后，所述校验码二被传送到所述打印机芯片，所述运算单元比较所述校验码一和所述校验码二，若不同，则特定授权不通过，若是相同，则特定授权通过，此时将所述授权标志位更改，从而转变整个所述数据存储单元的状态，将所述数据存储单元都变为非保护部分，即都可以重新录入新数据，则该种打印机芯片既可以重复使用，延长使用寿命。
作为本发明的优选，当所述数据存储单元处于非授权状态时，所述一次性部分包含墨盒 最大容量数据。
作为本发明的优选，当所述数据存储单元处于非授权状态时，所述一次性部分还包含墨盒保护机器系列号数据和保护起效位数据。
作为本发明的优选，当所述数据存储单元处于非授权状态时，所述保护部分包含墨盒首次使用日期。
作为本发明的优选，所述运算单元通过所述打印机主机发送来的数据数据及存储在所述密匙单元里的密匙数据进行运算的方式为AES算法、DES算法、EDES算法或3DES算法。
国际标准的AES算法、DES算法、EDES算法或3DES算法已经证明在密匙安全的情况下，是无法复制和仿制的，特定授权的计算和认证过程有安全保障。
一种墨盒，该种墨盒上中设有所述的打印机芯片。
一种打印头，该种打印头上设有所述的打印机芯片。
一种打印机，包含打印头和墨盒，所述打印头设有所述的打印机芯片，所述墨盒上中所述的打印机芯片。
一种打印机芯片存储分配方法：包含打印机主机和可更换设备，所述打印机主机包含主机运算单元，所述可更换设备设有所述的打印机芯片，该种打印机芯片存储分配方法包括以下步骤：
步骤一：授权请求发送步骤：
所述打印机主机发出授权请求命令给所述打印机芯片；
步骤二：随机数返回步骤：
所述打印机芯片生成随机数据，并通过所述通讯单元发送给所述打印机主机；
步骤三：校验码生成步骤：
所述打印机芯片将所述随机数据作为输入，通过所述密匙单元里存储的密匙数据进行加密运算，得到所述校验码一，所述打印机主机中的所述主机运算单元采用同样的运算方式，得到所述校验码二；
步骤四：校验码比较步骤：
所述打印机主机将所述校验码二发送给所述打印机芯片，所述打印机芯片将所述校验码一与所述校验码二进行比对；
步骤五：授权标志标记步骤：
当步骤四中所述校验码一与所述校验码二一致时，所述授权标记标为有效，所述数据存储单元进入授权状态，若不一致，所述数据存储单元仍为非授权状态。
在所述步骤一中，所述打印机主机发出授权请求命令给所述打印机芯片，如发送0x60 0x00 0x98，则其中0x60为所述打印机芯片的芯片地址，0x00 0x98是授权请求命令，所述打印机芯片收到后，进入步骤二，返回本次授权随机数，例如返回0x00 0x08 0x65 0x97 0x35 0x63 0x34 0x23 0x56 0x39，其中0x00 0x08表示数据长度，0x65 0x97 0x35 0x63 0x34 0x23 0x56 0x39则为8个字节的所述随机数据，这时进入步骤三，所述打印机芯片将所述随机数据作为输入，通过所述密匙单元里存储的密匙数据进行加密运算，得到所述校验码一，所述打印机主机中的所述主机运算单元采用同样的运算方式，得到所述校验码二；之后进入步骤四，所述打印机主机将所述校验码二发送给所述打印机芯片，如发送数据为：0x60 0x00 0x78 0x24 0x35 0x69 0x23 0x74 0x13 0x86 0x89 0x24 0x35 0x69 0x23 0x74 0x13 0x86 0x89，其中0x60依然为数据地址，0x00 0x78为授权匹配命令，后续的0x24 0x35 0x69 0x23 0x74 0x13 0x86 0x89 0x24 0x35 0x69 0x23 0x74 0x13 0x86 0x89则为所述校验码二，所述打印机芯片将所述校验码二与自己计算得到的校验码一进行匹配，匹配比较之后，进入步骤五，若是数据不一致，则所述授权标志位不变，即特定授权未通过，若数据一致，则所述授权标志位改变，特定授权通过，原本数据存储单元的所述非保护部分、保护部分和所述一次性部分均变为非保护部分。
作为本发明的优选，在所述步骤三中，所述打印机主机与所述打印机芯片采用的加密运算方法为AES算法、DES算法、EDES算法或3DES算法。
作为本发明的优选，在所述步骤一中，所述打印机主机发送的所述授权请求命令还包含所述打印机芯片的芯片地址数据。
作为本发明的优选，在所述步骤三中，所述加密运算方法的输入数据除了所述随机数据还包含固定为00的固定数据。
作为本发明的优选，所述可更换设备为墨盒或打印头。
综上所述，本发明具有如下有益效果：
能对所述数据存储单元的权限进行重新改写，变为非保护部分，实现数据的全面重新录入，延长打印机芯片的使用寿命。
特定授权认证采用AES算法、DES算法、EDES算法或3DES算法，安全性高。
所述特定授权认证的输入信息为打印机主机发送来的命令和打印机芯片生成的随机数据为输入，使用原本保存的密匙数据，认证计算过程严谨，对数据安全性维护程度高。
附图说明
图1是实施例1的示意图；
图2是实施例1中所述数据存储单元在未特定授权下的示意图；
图3是实施例1中步骤一到步骤五的数据框图。
具体实施方式
以下结合附图对本发明作进一步详细说明。
本具体实施例仅是对本发明的解释，其并不是对本发明的限制，本领域技术人员在阅读完本说明书后可以根据需要对本实施例做出没有创造性贡献的修改，但只要在本发明的权利要求范围内都受到专利法的保护。
实施例1，如图1和图2所示：一种打印机芯片，包括芯片控制电路，用于存储数据的数据存储单元，用于与打印机通信的通讯单元；所述存储单元和所述通讯单元分别与所述芯片控制电路电连接；其特征在于：
所述数据存储单元包含授权标志位，所述授权标志位根据数值不同将所述数据存储单元分别置于非授权状态与授权状态；
所述数据存储单元处于所述非授权状态时包含可被所述控制电路读取或写入数据的非保护部分、可被所述控制电路读取但不能写入数据的保护部分和可被所述控制电路读取且只能写入一次数据的一次性部分；
所述数据存储单元处于授权状态时包含所述非保护部分；
所述控制电路包含密匙单元、运算单元和读写单元；
所述运算单元用于将打印机主机发送来的输入数据通过存储在所述密匙单元里的密匙数据运算得到校验码一；
所述运算单元还用于将所述打印机主机发送来的校验码二与所述校验码一进行比对，并根据比对结果改编所述数据存储单元中的所述授权标志位。
所述打印机芯片安装在可更换部件上，当所述可更换部件在普通使用状态时并没有经过特定授权，即所述授权标志位上的数据将所述数据存储单元置于非授权状态，此时，数据存储单元分成了若干区域，至少包含了所述非保护部分、所述保护部分和所述一次性部分，三者之间的区别为读写权限的区别，所述非保护部分允许打印设备如打印机主机读取并写入数据，是常见的数据操作端口，所述保护部分存储的数据在首次使用时输入，只能读取，不能修改或写入，例如当所述打印机芯片安装在墨盒上，所述保护部分存储的数据可以为所述墨盒的首次使用日期，一旦写入就只能读取不能修改，用户可以根据所述墨盒的首次使用日期来推算所述墨盒的使用有效期；所述一次性部分允许写入数据，但是每个数据位只能写一次，例如规定所述一次性部分的数据存储都为二进制，可以从0写为1，但一旦写为1，就不 能写会0，这在实际中也有非常强的应用性，例如这部分数据包含多位，每一位都对应所述墨盒的一部分，当这部分墨量用完，则将数据0写为1，用户根据这个部分的数据就可以得出剩余墨量的数据，除此之外，用户还可以写入墨盒保护机器序列号等信息；用户可以将所述数据存储单元划分为N个数据块，每个数据块对应相应的地址，而这些数据块和这些地址对应着不同权限，从而形成一个数据块、地址、权限的对应表格，在所述控制电路要对所述数据存储单元进行相应的操作时，可以对所述数据存储单元通过设定的表格中进行寻址，找到对应的权限和对应的地址，进行读写操作；这里提供一个实施例，权限为0，为只读，对应所述保护部分，权限为1，为可写，对应所述非保护部分，权限为3，表示bit只可以从0变成1，对应所述一次性部分，此外，还有一个权限是2，规则为只可以写比原数据大的数据，这在实际操作中可以用来记载打印次数，随着打印机的使用，打印次数逐次升高，不可能变小，用户可以通过记录打印次数来估计墨水的剩余量等信息；当所述可更换部件寿命结束，需要更换时，则需要进入特别授权的验证步骤，具体的操作方式是，所述打印机主机会发送过来一则指令，所述打印机芯片会回馈一则随机数据，所述运算单元根据该则指令、所述随机数据和存储在所述密匙单元的密匙数据进行计算，得到所述校验码一，同样的，所述打印机主机同样根据该则指令和所述随机数据计算得到所述校验码二，随后，所述校验码二被传送到所述打印机芯片，所述运算单元比较所述校验码一和所述校验码二，若不同，则特定授权不通过，若是相同，则特定授权通过，此时将所述授权标志位更改，从而转变整个所述数据存储单元的状态，将所述数据存储单元都变为非保护部分，即都可以重新录入新数据，则该种打印机芯片既可以重复使用，延长使用寿命。
当所述数据存储单元处于非授权状态时，所述一次性部分包含墨盒最大容量数据、墨盒保护机器系列号数据和保护起效位数据。
当所述数据存储单元处于非授权状态时，所述保护部分包含墨盒首次使用日期。
所述运算单元通过所述打印机主机发送来的数据数据及存储在所述密匙单元里的密匙数据进行运算的方式为AES算法、DES算法、EDES算法或3DES算法。国际标准的AES算法、DES算法、EDES算法或3DES算法已经证明在密匙安全的情况下，是无法复制和仿制的，特定授权的计算和认证过程有安全保障。
一种打印机芯片存储分配方法：包含打印机主机和可更换设备，所述打印机主机包含主机运算单元，所述可更换设备设有所述的打印机芯片，该种打印机芯片存储分配方法包括以下步骤：
步骤一：授权请求发送步骤：
所述打印机主机发出授权请求命令给所述打印机芯片；
步骤二：随机数返回步骤：
所述打印机芯片生成随机数据，并通过所述通讯单元发送给所述打印机主机；
步骤三：校验码生成步骤：
所述打印机芯片将所述随机数据作为输入，通过所述密匙单元里存储的密匙数据进行加密运算，得到所述校验码一，所述打印机主机中的所述主机运算单元采用同样的运算方式，得到所述校验码二；
步骤四：校验码比较步骤：
所述打印机主机将所述校验码二发送给所述打印机芯片，所述打印机芯片将所述校验码一与所述校验码二进行比对；
步骤五：授权标志标记步骤：
当步骤四中所述校验码一与所述校验码二一致时，所述授权标记标为有效，所述数据存储单元进入授权状态，若不一致，所述数据存储单元仍为非授权状态。
在所述步骤一中，所述打印机主机发出授权请求命令给所述打印机芯片，如发送0x60 0x00 0x98，则其中0x60为所述打印机芯片的芯片地址，0x00 0x98是授权请求命令，所述打印机芯片收到后，进入步骤二，返回本次授权随机数，例如返回0x00 0x08 0x65 0x97 0x35 0x63 0x34 0x23 0x56 0x39，其中0x00 0x08表示数据长度，0x65 0x97 0x35 0x63 0x34 0x23 0x56 0x39则为8个字节的所述随机数据，这时进入步骤三，所述打印机芯片将所述随机数据作为输入，通过所述密匙单元里存储的密匙数据进行加密运算，得到所述校验码一，所述打印机主机中的所述主机运算单元采用同样的运算方式，得到所述校验码二；之后进入步骤四，所述打印机主机将所述校验码二发送给所述打印机芯片，如发送数据为：0x60 0x00 0x78 0x24 0x35 0x69 0x23 0x74 0x13 0x86 0x89 0x24 0x35 0x69 0x23 0x74 0x13 0x86 0x89，其中0x60依然为数据地址，0x00 0x78为授权匹配命令，后续的0x24 0x35 0x69 0x23 0x74 0x13 0x86 0x89 0x24 0x35 0x69 0x23 0x74 0x13 0x86 0x89则为所述校验码二，所述打印机芯片将所述校验码二与自己计算得到的校验码一进行匹配，匹配比较之后，进入步骤五，若是数据不一致，则所述授权标志位不变，即特定授权未通过，若数据一致，则所述授权标志位改变，特定授权通过，原本数据存储单元的所述非保护部分、保护部分和所述一次性部分均变为非保护部分。

Claims (12)

  1. 一种打印机芯片，包括芯片控制电路，用于存储数据的数据存储单元，用于与打印机通信的通讯单元；所述存储单元和所述通讯单元分别与所述芯片控制电路电连接；其特征在于：
    所述数据存储单元包含授权标志位，所述授权标志位根据数值不同将所述数据存储单元分别置于非授权状态与授权状态；
    所述数据存储单元处于所述非授权状态时包含可被所述控制电路读取或写入数据的非保护部分、可被所述控制电路读取但不能写入数据的保护部分和可被所述控制电路读取且只能写入一次数据的一次性部分；
    所述数据存储单元处于授权状态时包含所述非保护部分；
    所述控制电路包含密匙单元、运算单元和读写单元；
    所述运算单元用于将打印机主机发送来的输入数据通过存储在所述密匙单元里的密匙数据运算得到校验码一；
    所述运算单元还用于将所述打印机主机发送来的校验码二与所述校验码一进行比对，并根据比对结果改编所述数据存储单元中的所述授权标志位的数值。
  2. 根据权利要求1所述的一种打印机芯片，其特征在于：当所述数据存储单元处于非授权状态时，所述一次性部分包含墨盒最大容量数据。
  3. 根据权利要求2所述的一种打印机芯片，其特征在于：当所述数据存储单元处于非授权状态时，所述一次性部分还包含墨盒保护机器系列号数据和保护起效位数据。
  4. 根据权利要求1所述的一种打印机芯片，其特征在于：当所述数据存储单元处于非授权状态时，所述保护部分包含墨盒首次使用日期。
  5. 根据权利要求1—4任意一项所述的一种打印机芯片，其特征在于：所述运算单元通过所述打印机主机发送来的数据及存储在所述密匙单元里的密匙数据进行运算的方式为AES算法、DES算法、EDES算法或3DES算法。
  6. 一种墨盒，其特征在于，该种墨盒上中设有如权利要求1—5任意一项所述的打印机芯片。
  7. 一种打印机，包含打印头和墨盒，其特征在于，所述墨盒上中设有如权利要求1—5任意一项所述的打印机芯片。
  8. 一种打印机芯片存储分配方法：包含打印机主机和可更换设备，所述打印机主机包含主机运算单元，所述可更换设备设有如权利要求1—5任意一项所述的 打印机芯片，该种打印机芯片存储分配方法包括以下步骤：
    步骤一：授权请求发送步骤：
    所述打印机主机发出授权请求命令给所述打印机芯片；
    步骤二：随机数返回步骤：
    所述打印机芯片生成随机数据，并通过所述通讯单元发送给所述打印机主机；
    步骤三：校验码生成步骤：
    所述打印机芯片将所述随机数据作为输入，通过所述密匙单元里存储的密匙数据进行加密运算，得到所述校验码一，所述打印机主机中的所述主机运算单元采用同样的运算方式，得到所述校验码二；
    步骤四：校验码比较步骤：
    所述打印机主机将所述校验码二发送给所述打印机芯片，所述打印机芯片将所述校验码一与所述校验码二进行比对；
    步骤五：授权标志标记步骤：
    当步骤四中所述校验码一与所述校验码二一致时，所述授权标记标为有效，所述数据存储单元进入授权状态，若不一致，所述数据存储单元仍为非授权状态。
  9. 根据权利要求8所述的一种打印机芯片存储分配方法，其特征在于：在所述步骤三中，所述打印机主机与所述打印机芯片采用的加密运算方法为AES算法、DES算法、EDES算法或3DES算法。
  10. 根据权利要求8所述的一种打印机芯片存储分配方法，其特征在于：在所述步骤一中，所述打印机主机发送的所述授权请求命令还包含所述打印机芯片的芯片地址数据。
  11. 根据权利要求8所述的一种打印机芯片存储分配方法，其特征在于：在所述步骤三中，所述加密运算方法的输入数据除了所述随机数据还包含固定为00的固定数据。
  12. 根据权利要求8所述的一种打印机芯片存储分配方法，其特征在于：所述可更换设备为墨盒。
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