WO2018188071A1

WO2018188071A1 - Method for verifying consumable chip, consumable chip and consumable container

Info

Publication number: WO2018188071A1
Application number: PCT/CN2017/080570
Authority: WO
Inventors: 郑德鑫; 段维虎; 王波; 毛宏程
Original assignee: 广州众诺电子技术有限公司
Priority date: 2017-04-14
Filing date: 2017-04-14
Publication date: 2018-10-18
Also published as: JP6534467B2; CN108734253A; JP2018176723A; CN108734253B

Abstract

A method for verifying a consumable chip, a consumable chip and a consumable container. The method for verifying a consumable chip comprises the following steps: a consumable chip generating, according to its own serial number, a check value; sending the serial number and the check value to an imaging device; acquiring a verification result returned, according to the serial number and/or the check value, by the imaging device, and determining whether the verification result is a legitimate verification result; and if so, verification being passed, wherein a check value generated by the same serial number is a fixed value. By means of setting the check value generated by the same serial number to be a fixed value, a consumable chip corresponding to the serial number can always pass verification by an imaging device regardless of how many times the consumable chip is used, thereby avoiding unnecessary waste caused by the consumable chip not passing a check.

Description

Consumable chip verification method, consumable chip and consumable container

Technical field

The present invention relates to the field of consumables applied to an image forming apparatus, and in particular to a consumable chip, a consumable chip verification method, and a consumable container mounted with the consumable chip.

Background technique

Imaging equipment, such as printers, photocopies, fax machines and all-in-one printers, are indispensable office supplies in various fields. With the development of society, imaging equipment has gradually become one of the household appliances. In order to image a device such as toner or ink in a consumable container, it is usually necessary to mount a consumable chip on the consumable container. The image forming device recognizes the consumable container by the consumable chip and the main board in the image forming apparatus, and then the image forming apparatus can normally use the toner or ink in the consumable container.

In the prior art, in particular, an image forming apparatus produced by an OEM usually verifies information such as a model number, a serial number, a consumable capacity, a consumable consumption, a number of prints, and a print quantity of a consumable container in a consumable chip. After the verification is passed, the imaging device also checks the consumable capacity, the consumption of the consumables, the number of prints, and the number of prints during use of the image forming apparatus. For example, the number of times the image forming apparatus prints twice on the same serial number chip, The consumable capacity is separately verified to determine whether the verification result satisfies the preset condition respectively. Otherwise, the imaging device does not allow the chip to pass the machine, even if the chip is a new chip, the machine is not allowed to pass, thereby causing unnecessary waste.

Summary of the invention

In order to solve the above problems, the present invention provides a verification method of a consumable chip which can make a consumable chip pass smoothly and avoid waste, a consumable chip and a consumable container in which the consumable chip is mounted.

A consumable chip verification method includes the following steps:

The consumable chip generates a check value according to its own serial number;

Sending the serial number and the check value to the imaging device;

Obtaining a verification result returned by the imaging device according to the serial number and/or the check value, and determining whether the verification result is a legal verification result;

If yes, the verification is passed;

Wherein, the test value generated by the same serial number is a fixed value.

Preferably, after the step of transmitting the check value to the imaging device, before the step of acquiring the verification result returned by the imaging device according to the serial number and/or the check value, and determining whether the verification result is legal, the method further includes The following steps:

After the imaging device obtains the check value, it is determined whether the pre-check value corresponding to the serial number is stored in the imaging device;

If yes, the imaging device compares the pre-check value with the check value;

The imaging device determines whether the comparison result satisfies a preset condition;

If yes, the imaging device sends a legal verification result to the consumable chip, and the verification passes.

Preferably, if the imaging device does not store the pre-check value corresponding to the serial number and/or the serial number;

Then the imaging device stores the test value received this time and marks it as a pre-verification value;

The imaging device sends a legal verification result to the consumable chip.

Preferably, the preset condition is: the verification value is less than or equal to the previous verification value or the verification value is greater than or equal to the previous verification value.

Preferably, if the verification result returned by the imaging device according to the serial number and/or the check value is obtained, and the verification result is determined to be an illegal verification result;

Then switch the new serial number or replace the new consumable chip.

Preferably, before the step of generating a check value according to the serial number of the consumable chip, the method further includes the following steps:

After the serial number is read, the consumable chip generates a first random number;

Obtaining a second random number sent by the imaging device;

Generating first target data according to a pre-stored secret key, a first random number, and a second random number, and transmitting the first random number, the second random number, and the first target data to the imaging device;

Acquiring an initial verification result generated by the imaging device according to the first random number, the second random number, and the first target data, and determining whether the initial verification result is legal;

After the initial verification result is legal, the step of generating a check value according to the serial number of the consumable chip is performed.

Preferably, after the first target data is generated according to the secret key, the first random number and the second random number stored in advance by the chip, and the first random number, the second random number and the first target data are sent to the imaging device, Obtaining, in step, an initial verification result generated by the imaging device according to the first random number, the second random number, and the first target data, and determining that the initial verification result is Before it is legal, it also includes the following steps:

The imaging device calculates a private key according to the serial number, and calculates second target data according to the private key, the first random number, and the second random number;

The imaging device compares the first target data with the second target data;

The initial verification result is generated based on the comparison result.

The invention also provides a consumable chip, including

Generating a module for generating a check value according to a serial number of the consumable chip;

a storage module, configured to store the check value;

a first sending module, configured to send the check value to an imaging device;

a first obtaining module, configured to acquire a verification result returned by the imaging device according to the serial number and/or the check value;

a first determining module, configured to determine whether the verification result is a legal verification result; if yes, the verification is passed;

Wherein, the test value generated by the same serial number is a fixed value.

Preferably, the consumable chip further comprises

a random number generating module, configured to generate a first random number after the serial number is read;

a second acquiring module, configured to acquire a second random number sent by the imaging device;

a target data generating module, configured to generate first target data according to a secret key pre-stored by the chip, a first random number, and a second random number;

a second sending module, configured to send the first random number, the second random number, and the first target data to the imaging device;

a third obtaining module, configured to acquire an initial verification result generated by the imaging device according to the first random number, the second random number, and the first target data;

a second determining module, configured to determine whether the initial verification result is legal;

And an execution module, configured to perform the step of generating a check value according to the serial number of the consumable chip after the determination result of the second determining module is that the initial verification result is legal.

The invention also provides a consumable container, comprising a container body for storing consumables, the container body is provided with at least one mounting position, and further comprises a consumable chip, the consumable chip is mounted on the mounting position, and the consumable chip is right The consumable chip according to claim 9 or claim 10, wherein the verification method of the consumable chip is the verification method according to any one of claims 1-8.

The beneficial effects of the invention:

In the prior art, the present invention generates a check value relative to the consumable chip by the serial number of the consumable chip; then sends the check value to the imaging device, and the check value is verified by the imaging device, and returned Check the result. The consumable chip judges the validity of the verification result after obtaining the verification result. If the verification result legally indicates that the consumable chip is verified, the consumable chip can be normally used by the imaging device. Since the check value in the present invention is a fixed value with respect to the same serial number, that is, no matter how many times the consumable chip corresponding to the serial number is used, the check value returned when being verified by the imaging device is fixed. Therefore, as long as the verification result of the check value is legal, it means that the consumable chip corresponding to the serial number can be repeatedly verified by the imaging device and use or the plurality of chips having the same serial number can be imaged. The verification passes and uses, so that the consumable chip corresponding to the serial number can be reused, so as to prevent the consumable chip from failing due to the serial number verification. The waste caused by the consumable chip is not used.

DRAWINGS

1 is a flow chart of a method for verifying a consumable chip according to an embodiment of the present invention;

2 is a flow chart of an imaging device generating a verification result according to a check value in an embodiment of the invention;

3 is a flow chart showing an identification number of an imaging device in an embodiment of the invention;

4 is a flow chart of initial verification result generation in an embodiment of the invention;

Figure 5 is a block diagram of a consumable chip in an embodiment of the invention.

detailed description

The present invention will be further described below in conjunction with the drawings and specific embodiments.

This embodiment provides a method for verifying a consumable chip, including the following steps:

Referring to FIG. 1, step S01, a check value is generated according to the serial number of the consumable chip; wherein the check value generated by the same serial number is a fixed value. The check value can be N, which can be binary data, decimal data, or hexadecimal numbers. Since the check value corresponds to the serial number, the check value is only fixed relative to the same serial number, that is, the check values generated by different serial numbers may be different, but the same The check value generated by the serial number is the same. Regardless of how many times the consumable chips of the same serial number work, the check values produced are equal.

Step S02, the verification value is sent to the imaging device; the verification value may be verified by the imaging device, and the corresponding verification result is generated by the imaging device according to the verification value. Since the check values generated by the same serial number are the same, if the corresponding chip is in the first time The verification result generated when the imaging device communicates is legal, so the verification result generated later is also legal.

Step S03: Acquire a verification result returned by the imaging device according to the serial number and/or the check value, and determine whether the verification result is a legal verification result; if yes, execute step S04; otherwise, the verification fails, and the serial number cannot be used by the imaging device. That is, the consumable chip cannot be verified, and the serial number can be replaced or a new consumable chip can be replaced. A plurality of serial numbers can be stored in the chip. When one of them cannot be used by the imaging device, the process is switched to the next serial number, and then step S01 is performed. Of course, step S01 can be performed after replacing the new consumable chip.

Step S04, the verification result returned by the imaging device to the consumable chip is a legal verification result, and then the verification is passed, indicating that the serial number of the chip can be used by the imaging device, that is, the consumable chip can be verified to pass.

Referring to FIG. 2, as a preferred solution, after the step of transmitting the verification value to the imaging device, before the step of acquiring the verification result returned by the imaging device according to the serial number and/or the check value (ie, at the step) After S02, before step S03), the following steps may be further included. The following steps are mainly for the process of generating a verification result by the imaging device according to the check value, and the following steps are mainly performed in the imaging device:

After the imaging device obtains the check value in step A01, it is determined whether the pre-check value corresponding to the serial number is stored in the imaging device. After the consumable chip communicates with the imaging device, if the EEPROM data stored by the consumable chip can be verified by the imaging device, the consumable chip sends the verification value of the communication to the imaging device and stores it in the memory installed in the imaging device. in. Imaging if the consumable chip is not recorded in communication with the imaging device The device does not store the check value of the corresponding serial number of the corresponding consumable chip, that is, the pre-check value corresponding to the serial number and/or the serial number is not stored in the imaging device. When the consumable chip communicates with the imaging device for the first time, the imaging device stores the verification value of the corresponding serial number of the receiving consumable chip, and marks it as a pre-check value, and the imaging device sends a legal verification result. The consumable chip indicates that the consumable chip is verifiable.

Step A02: If the pre-check value corresponding to the serial number and/or the serial number is stored in the imaging device, it indicates that the consumable chip corresponding to the corresponding serial number is verified by the imaging device, and the pre-check value is stored in the imaging device. . If the consumable chip corresponding to the serial number is once again verified by the imaging device, the consumable chip sends the verification value corresponding to the serial number to the imaging device again. The imaging device compares the check value with a previous check value stored in the previous communication. Since the serial numbers of the same chip are the same, the pre-check value can usually be the same as the check value.

In step A03, the imaging device determines whether the comparison result satisfies a preset condition. If yes, this means that the imaging device can allow the consumable chip corresponding to the serial number to be used, and mark the check value as a pre-check value; otherwise, the imaging device does not allow the consumable chip corresponding to the serial number to be used, And will also prompt an error. The preset condition may be that the verification value is less than or equal to the previous verification value, or the verification value is greater than or equal to the previous verification value. This preset condition can be designed before the imaging device is shipped from the factory. Since the check value generated by the consumable chip of the same serial number in the present invention is a fixed value, the consumable chip of the same serial number can satisfy the preset condition regardless of the number of times used in the same printer.

The verification process of the consumable chip verification method is described by using the preset condition that the verification value is less than or equal to the pre-verification value:

When a consumable chip communicates with the imaging device for the third time, the consumable chip generates a check value N according to its own serial number, and sends the check value N to the imaging device, and the imaging device corresponds to the consumable chip. After the check value N of the serial number, and comparing the check value N with the previous check value N', when the N is less than or equal to the N', it indicates that the serial number can be used by the imaging device. And the check value N is overwritten with the pre-check value N', and then the check value N is marked as the pre-check value. At this time, the imaging device sends a legal verification result to the consumable chip. The pre-check value N' may be a check value retained by the consumable chip of the same serial number when it is communicated with the imaging device A-1. When the N is greater than the N′, it indicates that the serial number cannot be used by the imaging device, and at this time, the new serial number is replaced by the consumable chip and the imaging device to perform the verification process again, or the new consumable chip is replaced with The imaging device re-executes the verification process. In a preferred embodiment, the check value may be represented by the number of times the serial number is used by the imaging device, or the serial number corresponding to the remaining capacity of the consumable or the consumable consumption. Since the check value is a fixed value, the number of times, the remaining capacity, or the consumption amount of the corresponding serial number after the serial number is used by the printer does not change.

In step A04, if the comparison result of the step A03 is that the preset condition is met, the imaging device sends a legal verification result to the consumable chip. If the imaging device determines that the comparison result does not satisfy the preset condition; the imaging device transmits an illegal verification result to the consumable chip.

Referring to FIG. 3, as another preferred embodiment, before the step of generating a check value according to the serial number of the consumable chip, the method further includes the following steps, where the imaging device is a process of identifying the serial number:

In step B01, after the serial number is read, the consumable chip generates a first random number. Usually, the consumable chip is installed in the imaging device. After being powered on, the imaging device acquires the serial number and performs algorithm verification on the serial number.

Step B02: Acquire a second random number sent by the imaging device. After acquiring the serial number, the imaging device generates a second random number according to the serial number.

Step B03, generating first target data according to the secret key, the first random number and the second random number stored in advance by the chip, and transmitting the first random number, the second random number and the first target data to the imaging device. The secret key may be pre-set. The imaging device may generate an initial verification result according to the first random number, the second random number, and the first target data, and send the initial verification result to the consumable chip, and then perform step B04.

Step B04: Acquire an initial verification result generated by the imaging device according to the first random number, the second random number, and the first target data, and determine whether the initial verification result is legal.

Step B05, after the initial verification result is legal, the step of generating a check value according to the serial number of the consumable chip is performed.

Referring to FIG. 4, in a preferred step, the first target data is generated according to a key, a first random number, and a second random number stored in advance by the chip, and the first random number, the second random number, and the first target data are sent. After the imaging device, the step obtains an initial verification result generated by the imaging device according to the first random number, the second random number, and the first target data, and determines whether the initial verification result is legal (ie, after step B03 and before step B04) ), also includes the following steps, the following steps are mainly for the process of initial verification result generation when identifying the serial number:

Step C01, the imaging device calculates a private key according to the serial number, and according to the private key, The first random number and the second random number are calculated to obtain second target data. The serial number can be a serial number obtained by the imaging device from the consumable chip. The serial number described in this step can be identified by the imaging device, and the serial number in this step can be different from the serial number set in the EEPROM in the corresponding consumable chip.

In step C02, the imaging device compares the first target data with the second target data. Generally, the result of comparing the first target data with the second target is preset. If the comparison result is a preset value or range, it indicates that the consumable chip can be recognized by the imaging device, otherwise the consumable chip cannot be recognized by the imaging device.

Step C03, generating the initial verification result according to the comparison result. Generally, the structure of the comparison may be a result obtained by comparing the sizes between the two, and then the initial verification result may be obtained according to the size of the comparison result, for example, the initial verification when the comparison result is a preset value or range. The result is a legal verification result, otherwise it is not a legal verification result.

Referring to FIG. 5, an embodiment of the present invention further provides a consumable chip. The consumable chip verification method may be the verification method described in the above embodiments, and the consumable chip includes:

A module 1 is generated for generating a check value based on a serial number of the consumable chip. Wherein, the test value generated by the same serial number is a fixed value.

The storage module 2 is configured to store the check value. The storage module includes a metering area and a non-metering area. The storage module in this embodiment includes a volatile memory SRAM and a non-volatile memory EEPROM. The non-metering area is set in the EEPROM for storing the toner cartridge model, the manufacturer code, EEPROM data such as serial number and production date, the metering area is set in SRAM, used to store toner remaining amount, total print quantity, number of printed pages consumed, last print operation time, use status of printing process, check value, etc. .

The first transmitting module 3 is configured to send the check value to the imaging device.

The first obtaining module 4 is configured to obtain a verification result returned by the imaging device according to the check value.

The first determining module 5 is configured to determine whether the verification result is a legal verification result; if yes, the verification is passed; otherwise, the verification fails.

As a preferred solution, the consumable chip may further include

A random number generation module 6 is configured to generate a first random number after the serial number is read.

The second obtaining module 7 is configured to acquire a second random number sent by the imaging device.

The target data generating module 8 is configured to generate the first target data according to the secret key, the first random number and the second random number stored in advance by the chip.

The second sending module 9 is configured to send the first random number, the second random number, and the first target data to the imaging device.

The third obtaining module 10 is configured to acquire an initial verification result generated by the imaging device according to the first random number, the second random number, and the first target data.

The second judging module 11 is configured to determine whether the initial verification result is legal; if it is legal, the consumable chip can be imaged by the device, otherwise it is not recognized.

The executing module 12 is configured to perform the step of generating a check value according to the serial number of the consumable chip after the determination result of the second determining module 11 is that the initial verification result is legal.

The invention also provides a consumable container, comprising a container body for storing consumables and a consumable chip, wherein the container body is provided with at least one mounting position, the consumable chip is mounted on the mounting position, and the consumable chip is implemented by the above The consumable chip described in the example, the consumable core The verification method of the slice is the verification method described in the above embodiments.

The consumable chip verification method of the present invention is to enable the corresponding consumable chip to be used by the imaging device by verifying the serial number; since the present invention is a fixed value generated by the same serial number, the imaging device The check value corresponding to each serial number is received as a fixed value, so that the consumable chip can be verified by the imaging device all the time, no matter how many times the consumable chip is used, as long as the consumable chip is verified by the imaging device for the first time. Typically, the verification method of the present invention is a verification of the serial number, which typically occurs after the EPPROM data of the consumable chip is recognized by the imaging device. Furthermore, the present invention also includes the step of identifying the serial number prior to verifying the serial number, the step of identifying typically occurring before the EPPROM data is recognized by the imaging device.

Various other changes and modifications may be made by those skilled in the art in light of the above-described technical solutions and concepts, and all such changes and modifications are intended to fall within the scope of the appended claims.

Claims

A consumable chip verification method, comprising the steps of:

The consumable chip generates a check value according to its own serial number;

Sending the serial number and the check value to the imaging device;

Obtaining a verification result returned by the imaging device according to the serial number and/or the check value, and determining whether the verification result is a legal verification result;

If yes, the verification is passed;

Wherein, the test value generated by the same serial number is a fixed value.
The consumable chip verification method according to claim 1, wherein after the step of transmitting the verification value to the imaging device, obtaining a verification result returned by the imaging device according to the serial number and/or the verification value, and determining The following steps are included before the verification step is legal:

After the imaging device obtains the check value, it is determined whether the pre-check value corresponding to the serial number is stored in the imaging device;

If yes, the imaging device compares the pre-check value with the check value;

The imaging device determines whether the comparison result satisfies a preset condition;

If yes, the imaging device sends a legal verification result to the consumable chip, and the verification passes.
The method for verifying a consumable chip according to claim 2, wherein if the image processing device does not store the pre-check value corresponding to the serial number and/or the serial number;

Then the imaging device stores the received verification value and marks it as a pre-check value;

The imaging device sends a legal verification result to the consumable chip.
A consumable chip verification method according to claim 3, wherein said said The preset condition is that the verification value is less than or equal to the previous verification value or the verification value is greater than or equal to the previous verification value.
The method for verifying a consumable chip according to claim 1, wherein if the verification result returned by the imaging device according to the serial number and/or the verification value is obtained, and the verification result is determined to be an illegal verification result;

Then switch the new serial number or replace the new consumable chip.
The method for verifying a consumable chip according to claim 1, wherein before the step of generating a check value according to the serial number of the consumable chip, the method further comprises the following steps:

After the serial number is read, the consumable chip generates a first random number;

Obtaining a second random number sent by the imaging device;

Generating first target data according to a pre-stored secret key, a first random number, and a second random number, and transmitting the first random number, the second random number, and the first target data to the imaging device;

Acquiring an initial verification result generated by the imaging device according to the first random number, the second random number, and the first target data, and determining whether the initial verification result is legal;

After the initial verification result is legal, the step of generating a check value according to the serial number of the consumable chip is performed.
The method for verifying a consumable chip according to claim 6, wherein the step of generating, according to the pre-stored secret key, the first random number and the second random number, the first target data, and the first random number, the second random number and After the first target data is sent to the imaging device, before the step of acquiring the initial verification result generated by the imaging device according to the first random number, the second random number, and the first target data, and determining whether the initial verification result is legal, the method further includes The following steps:

The imaging device calculates a private key according to the serial number, and calculates second target data according to the private key, the first random number, and the second random number;

The imaging device compares the first target data with the second target data;

The initial verification result is generated based on the comparison result.
A consumable chip characterized by: including

Generating a module for generating a check value according to a serial number of the consumable chip;

a storage module, configured to store the check value;

a first sending module, configured to send the check value to an imaging device;

a first obtaining module, configured to acquire a verification result returned by the imaging device according to the serial number and/or the check value;

a first determining module, configured to determine whether the verification result is a legal verification result; if yes, the verification is passed;

Wherein, the test value generated by the same serial number is a fixed value.
A consumable chip according to claim 8 further comprising:

a random number generating module, configured to generate a first random number after the serial number is read;

a second acquiring module, configured to acquire a second random number sent by the imaging device;

a target data generating module, configured to generate first target data according to a secret key pre-stored by the chip, a first random number, and a second random number;

a second sending module, configured to send the first random number, the second random number, and the first target data to the imaging device;

a third obtaining module, configured to acquire an initial verification result generated by the imaging device according to the first random number, the second random number, and the first target data;

a second determining module, configured to determine whether the initial verification result is legal;

And an execution module, configured to perform the step of generating a check value according to the serial number of the consumable chip after the determination result of the second determining module is that the initial verification result is legal.
A consumable container comprising a container body for storing consumables, the container body being provided with at least one mounting position, characterized in that: further comprising a consumable chip, the consumable chip mounted on the mounting position, the consumable chip being right The consumable chip according to claim 8 or claim 9, wherein the verification method of the consumable chip is the verification method according to any one of claims 1 to 7.