Replaceable device, replaceable chip and communication method thereof

Abstract

The present invention belongs to the field of image forming technology, and more particularly to a replaceable device, a replaceable chip and a communication method thereof. The replaceable chip can communicate with the image forming device, and the communication method includes: obtaining a first signal sent by a main controller of the image forming device; generating a second signal and verification data according to the first signal, wherein the verification data is a preset value; and sending the second signal and the verification data to the main controller. In the above communication method, the replaceable chip needs to first read the first signal and feed back the second signal to the main controller of the image forming device according to the first signal. After confirming that the feedback of the second signal is completed, the replaceable chip outputs the preset verification data, and the verification data is located after the second signal in the character string of the second information. Until the verification data, the previous data are all the second signals. Through the verification data, the main controller of the image forming device can accurately and quickly confirm the second signal from the received data to avoid data reading errors.

Description

Technical Field

[0001] The present invention belongs to the technical field of image formation, and in particular relates to a replaceable device, a replaceable chip and a communication method thereof. Background Art

[0002] Current printing systems typically include one or more replaceable printer components, such as inkjet cartridges, inkjet printhead assemblies, toner cartridges, ink supplies, etc. Some existing systems provide these replaceable printer components with on-board memory to communicate information about the replaceable components to the printer, such as ink fill levels, marketing information, etc.

[0003] In order to perform such information management, the controller provided in the main body of the imaging device and the storage unit provided in the consumable unit communicate with each other. The signal of each communication will be different, and after the controller receives the signal fed back by the storage unit, it cannot quickly obtain the required data from all the received data. Summary of the invention

[0004] The object of the present invention is to provide a replaceable device, a replaceable chip and a communication method thereof, aiming to solve the problem that a traditional controller cannot quickly obtain required data from all received data after receiving a signal fed back by a storage unit.

[0005] A communication method for a replaceable chip, the communication method comprising:

[0006] Acquire a first signal sent by a main controller of the image forming device;

[0007] Generate a second signal and verification data according to the first signal, wherein the verification data is a preset value;

[0008] Sending a second signal and verification data to the main controller.

[0009] Further, the step of generating the second signal and verification data according to the first signal includes:

[0010] After confirming that the second signal generation is complete, verification data is generated.

[0011] Furthermore, it also includes:

[0012] Acquire first integrity data sent by a main controller of the image forming device;

[0013] generating second integrity data according to the second signal, the verification data, and the first integrity data;

[0014] The second integrity data is sent to the host controller.

[0015] Furthermore, before generating the second signal and verification data according to the first signal, the method further includes:

[0016] Check whether the first integrity data is accurate.

[0017] In addition, a replaceable chip is provided for communicating with the image forming device, and the replaceable chip includes:

[0018] A receiving unit configured to receive a first signal sent by the image forming device;

[0019] a verification unit connected to the receiving unit and configured to generate a verification signal according to the first signal, wherein the verification signal is a preset value;

[0020] The control unit is connected to the receiving unit and is configured to generate a second signal according to the first signal, and send the second signal and the verification signal to a main controller of the imaging device.

[0021] Furthermore, the verification unit includes a first confirmation unit and a first generation unit. The first confirmation unit is connected to the control unit and is configured to feed back a completion signal to the first generation unit after confirming that the second signal generation is completed. The first generation unit receives the completion signal and generates verification data.

[0022] Furthermore, it also includes:

[0023] an acquisition unit configured to acquire first integrity data sent by a main controller of the image forming device;

[0024] A second generating unit, configured to generate second integrity data according to the second signal, the verification data and the first integrity data;

[0025] The control unit is further configured to send second integrity data to the main controller.

[0026] Furthermore, it also includes:

[0027] The detection unit is configured to detect whether the first integrity data is accurate.

[0028] In addition, a replaceable device is provided, comprising:

[0029] a developing cartridge mounted on the image forming device; and

[0030] The above-mentioned replaceable chip is installed on the developing box.

[0031] The replaceable chip and its communication method described above need to first read the first signal and feed back the second signal to the main controller of the image forming device according to the first signal. After confirming that the second signal feedback is completed, the replaceable chip outputs the preset verification data. The verification data is located after the second signal in the character string of the second information. Until the verification data, the previous data are all the second signal. Through the verification data, the main controller of the image forming device can accurately and quickly confirm the second signal from the received data to avoid data reading errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the structure of an image forming device provided by an embodiment of the present invention;

[0033] Figure 2 A schematic flow chart of a communication method for a replaceable chip provided in an embodiment of the present invention;

[0034] Figure 3 A schematic flow chart of a communication method for a replaceable chip provided in an embodiment of the present invention;

[0035] Figure 4 A schematic diagram of the structure of a replaceable chip provided in an embodiment of the present invention;

[0036] Figure 5 A schematic diagram of the structure of a replaceable chip provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0038] Figure 1 The schematic diagram of the structure of the image forming device is shown, the image forming device includes a main body, a main controller arranged in the main body, and a replaceable device detachably installed in the main body, the main controller can communicate with a replaceable chip on the replaceable unit. The replaceable device can be installed on the main body of the image forming device, each replaceable device has a predetermined lifespan, and when the replaceable device reaches the preset lifespan, the image forming device can remind the user to replace it.

[0039] The replaceable device includes a CRUM replaceable chip, which includes a memory for recording and storing various information, such as various characteristic information about the replaceable device, the replaceable chip itself, or the image forming device, as well as usage information or programs of the replaceable device.

[0040] The replaceable chip may include a CPU (not shown) capable of managing a memory, executing various programs stored in the memory, and performing communication with a main controller of the image forming apparatus. Figure 2 The present invention provides a communication method for a replaceable chip, which specifically includes the following steps:

[0041] In step S100 , a first signal sent by a main controller of the image forming apparatus is acquired.

[0042] Specifically, when the replaceable device is installed in the image forming device, the replaceable chip will be connected to the main controller in the image forming device through communication, and the replaceable chip can obtain the first signal sent by the main controller of the image forming device through the communication connection to authenticate the replaceable chip. The first signal includes first command data, first data and first integrity data, wherein the first command data is a control command sent by the main controller of the image forming device to the replaceable chip, and the first integrity data is used to detect the integrity of the first signal data, wherein the first integrity data is the last data bit of the first signal, and whether the data before the first integrity data is wrong is determined according to the detection result of the first integrity data, and if there is no problem with the first integrity data, the first data command and the first data are recorded. The first integrity data is generated by the image forming device, and can be specifically generated by the main controller of the image forming device. Specifically, the first integrity data is calculated by the first command data and the first data according to a preset algorithm, and the preset algorithm can be a combination of one or more algorithms such as an addition algorithm, a shift algorithm, and a symmetric algorithm.

[0043] In step S200, a second signal and verification data are generated according to the first data, wherein the verification data is a preset value.

[0044] Specifically, the replaceable chip needs to first read the first command data and the first data in the first signal, and feed back the second signal to the main controller of the image forming device according to the first command data and the first data. The second signal includes the second signal, verification data and second integrity data, wherein the second signal is the feedback data in response to the first command data and the first data, which can be the relevant characteristic information or usage information of the replaceable device and the replaceable chip itself, and the verification data is used to indicate whether the second signal has completed the feedback. In other words, the verification data is located after the second signal in the character string of the second information, and the previous data until the verification data are all the second signal. After confirming that the feedback of the second signal is completed, the replaceable chip outputs the preset verification data.

[0045] In step S300, a second signal and verification data are sent to the main controller.

[0046] It should be noted that the verification data is set to a preset value, which can be 95 00 (00111111 00000000 in binary), or any two-digit character data. The verification data can also be character data of other lengths. After the main controller of the image forming device receives the second signal, the verification data, and the second integrity data, it reads the data. When the main controller reads the verification data of the preset value, it confirms that the feedback signal of the replaceable chip has been received, and the data before the verification data is the relevant information fed back after the replaceable chip responds. By verifying the data, the main controller of the image forming device can accurately and quickly confirm the second signal from the received data to avoid data reading errors.

[0047] Step S200 specifically includes:

[0048] After confirming that the second signal generation is complete, verification data is generated.

[0049] The verification data is used to verify whether the second signal based on the first data feedback has been generated. After the second signal is generated, the verification data will be generated after the second signal. However, if the second signal is not generated or is generated incorrectly, the verification data will not be generated. If the main controller of the image forming device cannot detect the verification data, it is determined that the replaceable chip has not fed back data or the fedback data is incorrect. The main controller of the image forming device re-authenticates with the replaceable chip or reminds of the authentication error. The user can re-install the machine for authentication.

[0050] like Figure 3 As shown, the communication method specifically includes the following steps:

[0051] In step S400, first integrity data sent by a main controller of the image forming device is acquired; in step S500, second integrity data is generated according to a second signal, verification data and the first integrity data; in step S600, the second integrity data is sent to the main controller.

[0052] When the main controller of the image forming device sends the first signal, it also sends the first integrity data to the replaceable chip at the same time. The first integrity data is used to detect the data integrity of the first signal. By detecting the accuracy of the first integrity data, the integrity of the first signal is confirmed. Specifically, the first integrity data is generated according to the first signal sent by the main controller of the image forming device. The replaceable chip only needs to verify whether the received first signal is consistent with the first integrity check data to verify the integrity of the first signal. Similarly, in order to verify the integrity of the second signal and the verification data, the second integrity data is generated according to the second signal, the verification data and the first integrity data. The main controller of the image forming device can verify the integrity of the second signal and the verification data in the same way.

[0053] Furthermore, before step S200, it also includes: detecting whether the first integrity data is accurate. In this embodiment, the replaceable chip first confirms the accuracy of the first integrity data, that is, determines the integrity of the first signal. If the first integrity data is accurate, that is, it is determined that the first signal received by the replaceable chip is complete and error-free, the replaceable chip extracts the first signal for subsequent operations; if the first integrity data is inaccurate, that is, it is determined that the first signal received by the replaceable chip is missing or an error occurs, at this time, the replaceable chip sends an error signal to the main controller of the image forming device, and requests the main controller to resend the first information and the first integrity data.

[0054] Figure 4 A schematic diagram of the circuit structure of the replaceable chip provided in the embodiment of the present solution. Each replaceable device can be equipped with a replaceable chip for communicating with the image forming device. Figure 2 As shown, the replaceable chip includes: an interface unit 100 , a verification unit 200 and a control unit 300 .

[0055] The interface unit 100 is configured as a signal transceiver port, and is used to receive or send various signals. Specifically, it can receive a first signal sent by the main controller of the image forming device, and send a second signal and a verification signal fed back to the image forming device. The interface unit 100 can be represented on the replaceable chip as a portion including conductive contacts exposed on the surface of the replaceable chip. When the replaceable device is installed in the image forming device, the replaceable chip can be electrically connected to the main controller of the image forming device through the conductive contacts to achieve communication connection between the replaceable chip and the main controller of the image forming device.

[0056] Specifically, the first signal includes first command data, first data, and first integrity data, wherein the first command data is a control command sent by the main controller of the image forming device to the replaceable chip, and the first integrity data is used to detect the integrity of the first signal data, wherein the replaceable chip also includes a detection unit configured to detect whether the first integrity data is accurate, and the first integrity data is the last data bit of the first signal. According to the detection result of the first integrity data, it is determined whether the data before the first integrity data is wrong, and if there is no problem with the first integrity data, the first data command and the first data are recorded. The first integrity data is generated by the image forming device, and specifically can be generated by the main controller of the image forming device. Specifically, the first integrity data is calculated by the first command data and the first data according to a preset algorithm, and the preset algorithm can be a combination of one or more algorithms such as an addition algorithm, a shift algorithm, and a symmetric algorithm.

[0057] The verification unit 200 is connected to the receiving unit and is used to generate a verification signal according to the first signal, wherein the verification signal is a preset value. The verification unit 200 is used to verify whether the replaceable chip has performed a response action on the first signal. Specifically, the replaceable chip needs to first read the first command data and the first data in the first signal, and feed back the second signal to the main controller of the image forming device according to the first command data and the first data. The second signal includes a second signal, verification data and second integrity data, wherein the second signal is feedback data in response to the first command data and the first data, and can specifically be the relevant characteristic information or usage information of the replaceable device and the replaceable chip itself, and the verification data is used to indicate whether the second signal has completed feedback. In other words, the verification data is located after the second signal in the character string of the second information, and until the verification data, the previous data are all the second signal. After confirming that the second signal feedback is completed, the replaceable chip outputs the preset customized verification data, and the second integrity data is generated by the second signal, the verification data and the first integrity data according to the algorithm calculation, and its function is the same as the first integrity data, which will not be repeated here.

[0058] It should be noted that the verification data is set to a preset value, which can be 95 00 (00111111 00000000 in binary), or any two-digit character data. The verification data can also be character data of other lengths. After the main controller of the image forming device receives the second signal, the verification data, and the second integrity data, it reads the data. When the main controller reads the verification data of the preset value, it confirms that the feedback signal of the replaceable chip has been received, and the data before the verification data is the relevant information fed back after the replaceable chip responds. By verifying the data, the main controller of the image forming device can accurately and quickly confirm the second signal from the received data to avoid data reading errors.

[0059] The control unit 300 is connected to the receiving unit and is used to generate a second signal according to the first signal and send the second signal and the verification signal to the main controller of the image forming device. The control unit 300 transmits the second signal, the verification data and the second integrity data to the main controller of the image forming device through the interface unit 100.

[0060] The verification unit 200 includes a first confirmation unit and a first generation unit. The first confirmation unit is connected to the control unit 300 and is configured to feed back a completion signal to the first generation unit after confirming that the second signal is generated. The first generation unit receives the completion signal and generates verification data. The confirmation unit first confirms whether the second signal is generated. After the second signal is generated, the first generation unit generates verification data. However, if the second signal is not generated or generated incorrectly, the first generation unit will not generate verification data. If the main controller of the image forming device cannot detect the verification data, it is determined that the replaceable chip has not fed back data or the fed back data is incorrect. The main controller of the image forming device re-authenticates with the replaceable chip or reminds the authentication error. The user can re-install the authentication.

[0061] like Figure 5 As shown, the replaceable chip also includes an acquisition unit 400 and a second generation unit 500; the acquisition unit 400 is configured to acquire the first integrity data sent by the main controller of the image forming device; the second generation unit 500 is configured to generate the second integrity data according to the second signal, the verification data and the first integrity data; the control unit 300 is also configured to send the second integrity data to the main controller. The first integrity data is used to detect the integrity of the first signal data, wherein the second integrity data is used to verify the integrity of the second signal and the verification data received by the main controller of the image forming device, and the main controller of the image forming device determines whether the second signal and the verification data before the second integrity data are wrong according to the detection result of the second integrity data, and if there is no problem with the second integrity data, the second signal is recorded. Specifically, the second integrity data is calculated by the second signal and the verification data according to a preset algorithm, and the preset algorithm can be a combination of one or more algorithms such as an addition algorithm, a shift algorithm, and a symmetric algorithm.

[0062] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A communication method of a replaceable chip, wherein the replaceable chip can communicate with an image forming device, characterized in that: Communication methods include: Acquire a first signal sent by a main controller of the image forming device; Generate a second signal and verification data according to the first signal, wherein the verification data is a preset value; sending a second signal and verification data to a main controller; The communication method further comprises: Acquire first integrity data sent by a main controller of the image forming device, wherein the first integrity data is the last data bit of the first signal; generating second integrity data according to the second signal, the verification data, and the first integrity data, wherein the second integrity data is used to verify the integrity of the second signal and the verification data; sending the second integrity data to the main controller; Wherein, before generating the second signal and verification data according to the first signal, it also includes: detecting whether the first integrity data is accurate; if the first integrity data is inaccurate, sending an error signal to the main controller of the image forming device, and requesting the main controller to resend the first information and the first integrity data.

2. The communication method according to claim 1, characterized in that The step of generating a second signal and verification data according to the first signal comprises: After confirming that the second signal generation is complete, verification data is generated.

3. A replaceable chip for communicating with an image forming device, characterized in that: Replaceable chips include: A receiving unit configured to receive a first signal sent by the image forming device; a verification unit connected to the receiving unit and configured to generate a verification signal according to the first signal, wherein the verification signal is a preset value; a control unit connected to the receiving unit and configured to generate a second signal according to the first signal, and send the second signal and the verification signal to a main controller of the imaging device; The replaceable chip also includes: an acquisition unit configured to acquire first integrity data sent by a main controller of the image forming device, wherein the first integrity data is the last data bit of the first signal; A second generating unit is configured to generate second integrity data according to the second signal, the verification data and the first integrity data, wherein the second integrity data is used to verify the integrity of the second signal and the verification data; The control unit is further configured to send second integrity data to the main controller; The detection unit is configured to detect whether the first integrity data is accurate; if the first integrity data is inaccurate, send an error signal to a main controller of the image forming device and request the main controller to resend the first information and the first integrity data.

4. The replaceable chip as claimed in claim 3, characterized in that: The verification unit includes a first confirmation unit and a first generation unit. The first confirmation unit is connected to the control unit and is configured to feed back a completion signal to the first generation unit after confirming that the second signal generation is completed. The first generation unit receives the completion signal and generates verification data.

5. A replaceable device, characterized in that: include: A developing cartridge mounted on the image forming device; as well as A replaceable chip as claimed in any one of claims 3 to 4 mounted on a developing cartridge.

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