CN110536042A - Image forming apparatus and its control method, storage medium - Google Patents
Image forming apparatus and its control method, storage medium Download PDFInfo
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- CN110536042A CN110536042A CN201910832398.8A CN201910832398A CN110536042A CN 110536042 A CN110536042 A CN 110536042A CN 201910832398 A CN201910832398 A CN 201910832398A CN 110536042 A CN110536042 A CN 110536042A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
- H04N1/00026—Methods therefor
- H04N1/00042—Monitoring, i.e. observation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
- H04N1/00071—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for characterised by the action taken
- H04N1/00082—Adjusting or controlling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/44—Secrecy systems
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Abstract
The present invention relates to a kind of image forming apparatus and its control method, storage medium, image forming apparatus includes imaging controller, is configured as control described image and forms device execution imaging operation；Nonvolatile memory is configured as storing program to be verified；Safety chip, it is configured as the program to be verified stored in reading non-volatile storage, it treats checking routine to carry out safety check and program to be verified is sent to the corresponding program loader to be verified of imaging controller, program loader to be verified starts to execute program to be verified after receiving program to be verified；Wherein, during safety chip treats checking routine progress safety check, if safety chip determines program to be verified and do not meet safety requirements, and when current imaging controller is carrying out program to be verified, safety chip, which controls imaging controller, to be stopped executing program to be verified.Above-mentioned image forming apparatus can be good at guaranteeing the safety of image forming apparatus processing information.
Description
Technical field
The present invention relates to definition technique fields, and in particular to a kind of image forming apparatus and its control method, storage
Medium.
Background technique
With the progress of electronic science and technology, the development of image forming apparatus (Image forming apparatus)
It is more and more mature, but as a kind of computer peripheral equipment, image forming apparatus is easy by criminal (such as hacker)
Attack, by with scanning and/or facsimile function laser printer (one of image forming apparatus multiple types) for,
The data of scanning or fax may all carry the confidential data of user, or even connect kernel component photosensitive drums in laser imaging
On, it is also possible to carry user's confidential data to be printed；For these data once revealing, it is many unnecessary to bring to user
Trouble；If being related to the office of company or government secret department, if the confidential data that image forming apparatus carries
It is leaked, it is also possible to jeopardize company or government safety.Currently, safety chip is usually arranged to image forming apparatus in the prior art
Controller (imaging controller 1) operation be monitored, but at present do not occur reliable scheme can be good at guarantee image
Form the safety of device processing information.
Summary of the invention
The embodiment of the present invention provides a kind of image forming apparatus and its control method, storage medium, be able to solve it is current not
Reliable scheme occur can be good at the problem of guaranteeing the safety of image forming apparatus processing information.
In a first aspect, the embodiment of the invention provides a kind of image forming apparatuses, comprising: imaging controller is configured as
It controls described image and forms device execution imaging operation；
Nonvolatile memory is configured as storing program to be verified, and the program to be verified is that described image forms dress
Set operation program used；
Safety chip is configured as reading the nonvolatile memory memory after described image forms device and powers on
The program to be verified of storage carries out safety check to the program to be verified and is sent to the program to be verified described
The corresponding program loader to be verified of imaging controller, the program loader to be verified are opened after receiving the program to be verified
Begin to execute the program to be verified；
Wherein, during the safety chip carries out safety check to the program to be verified, if the safe core
Piece determines that the program to be verified does not meet safety requirements, and presently described imaging controller is carrying out the program to be verified
When, the safety chip, which controls the imaging controller, to be stopped executing the program to be verified.
Optionally, the safety chip during reading the program to be verified or reads the program to be verified
After, safety check carried out to the program to be verified that has read, while by the program to be verified read be sent to it is described to
Checking routine loader.
Optionally, the safety chip during reading the program to be verified or reads the program to be verified
After, safety check first is carried out to the program to be verified read, only determines the program to be verified symbol read
After closing safety requirements, the program to be verified read is just sent to the program loader to be verified.
Optionally, the program to be verified includes startup program, and the startup program is that imaging controller completion is opened
Move required program；If the safety chip determines that the startup program does not meet safety requirements, and presently described imaging controls
When device is carrying out the startup program, the safety chip, which first controls the imaging controller, to be stopped executing the starting journey
Sequence, then control the imaging controller and reset, so that the imaging controller returns to original state；Alternatively, the safe core
Piece, which first controls the imaging controller, to be stopped executing the startup program, then controls the imaging controller power-off.
Optionally, the safety chip is connect with the reset terminal of the imaging controller, and the safety chip is by institute
The reset terminal for stating imaging controller sends reset enable signal and the imaging controller is resetted.
Optionally, it further includes power module and power switch that described image, which forms device, and the power switch is connected to institute
It states between power module and the imaging controller, the safety chip is disconnected and/or generated by controlling the power switch
The enable end of enabled invalid signals to the power module powers off imaging controller.
Optionally, the program to be verified includes at least one application program, if described in the safety chip is determining at least
The first application program in one application program does not meet safety requirements, and the safety chip forbids the imaging controller to execute
First application program.
Second aspect, the embodiment of the invention provides a kind of control method of image forming apparatus, described image forms dress
It sets including imaging controller, nonvolatile memory and safety chip, wherein the imaging controller is configured as described in control
Image forming apparatus executes imaging operation, and the nonvolatile memory is configured as storing program to be verified, described to be verified
Program is that described image forms device operation program used；
The described method includes:
After described image, which forms device, to be powered on, the safety chip reads the institute stored in the nonvolatile memory
Program to be verified is stated, the program to be verified is carried out safety check and the program to be verified is sent to the imaging to control
The corresponding program loader to be verified of device processed, the program loader to be verified start to execute after receiving the program to be verified
The program to be verified；
Wherein, during the safety chip carries out safety check to the program to be verified, if the safe core
Piece determines that the program to be verified does not meet safety requirements, and presently described imaging controller is carrying out the program to be verified
When, the safety chip, which controls the imaging controller, to be stopped executing the program to be verified.
It is described to read the program to be verified stored in the nonvolatile memory, the program to be verified is carried out
Safety check and the program to be verified is sent to the corresponding program loader to be verified of the imaging controller, it is specific to wrap
It includes:
The safety chip is during reading the program to be verified or after reading the program to be verified,
Safety check is carried out to the program to be verified read, while the program to be verified read is sent to the program to be verified
Loader.
Optionally, described to read the program to be verified stored in the nonvolatile memory, to described to be verified
Program carries out safety check and the program to be verified is sent to the corresponding program load to be verified of the imaging controller
Device specifically includes:
The safety chip is during reading the program to be verified or after reading the program to be verified,
Safety check first is carried out to the program to be verified read, only determines that the program to be verified read meets safety and wants
After asking, the program to be verified read is just sent to the program loader to be verified.
Optionally, the program to be verified includes startup program, and the startup program is that imaging controller completion is opened
Move required program；
If the safety chip determines that the program to be verified does not meet safety requirements, and presently described imaging controls
When device is carrying out the program to be verified, the safety chip, which controls the imaging controller, to be stopped executing the journey to be verified
Sequence specifically includes:
If the safety chip determines that the startup program does not meet safety requirements, and presently described imaging controller is
When executing the startup program, the safety chip, which first controls the imaging controller, to be stopped executing the startup program, then is controlled
It makes the imaging controller to reset, so that the imaging controller returns to original state；Alternatively, the safety chip first controls
The imaging controller stops executing the startup program, then controls the imaging controller power-off.
Optionally, the safety chip is connect with the reset terminal of the imaging controller, and the safety chip is by institute
The reset terminal for stating imaging controller sends reset enable signal and the imaging controller is resetted.
The third aspect, the embodiment of the invention provides a kind of storage medium, the storage medium includes the program of storage,
In, equipment where controlling the storage medium in described program operation executes the above method.
Fourth aspect, it is described to deposit the embodiment of the invention provides a kind of image forming apparatus, including memory and processor
Reservoir is used to control the execution of program instruction, described program instruction for storing the information including program instruction, the processor
The step of above method is realized when being loaded and executed by processor.
It is appreciated that the present invention carries out safety check to imaging controller program to be executed by safety chip, when
When program to be verified does not meet safety requirements, safety chip, which controls the imaging controller, to be stopped executing the program to be verified,
So that imaging controller is in the process of running, the whole monitoring by safety chip, reliable guarantee image forming apparatus
Safety, meanwhile, imaging controller program to be executed is sent to imaging controller by safety chip by the present invention, is not necessarily to
Additionally configuring corresponding hardware circuit to allow imaging controller and safety chip to obtain simultaneously from nonvolatile memory
Program to be verified, therefore circuit structure is further simplified, save cost.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is a kind of schematic block diagram for image forming apparatus that one embodiment of the invention provides；
Fig. 2-Fig. 6 is respectively a kind of hardware block diagram for image forming apparatus that a variety of different embodiments of the present invention provide；
Fig. 7 is a kind of flow chart of the control method for image forming apparatus that further embodiment of this invention provides；
Fig. 8 is the schematic block diagram for the image forming apparatus that further embodiment of this invention provides.
Specific embodiment
For a better understanding of the technical solution of the present invention, being retouched in detail to the embodiment of the present invention with reference to the accompanying drawing
It states.
It will be appreciated that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
Its embodiment, shall fall within the protection scope of the present invention.
The term used in embodiments of the present invention is only to be not intended to be limiting merely for for the purpose of describing particular embodiments
The present invention.In the embodiment of the present invention and the "an" of singular used in the attached claims, " described " and "the"
It is also intended to including most forms, unless context clearly shows that other meanings.
It should be appreciated that term "and/or" used herein is only a kind of incidence relation for describing affiliated partner, indicate
There may be three kinds of relationships, for example, A and/or B, can indicate: individualism A, exist simultaneously A and B, individualism B these three
Situation.In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".
Attached drawing 1 is please referred to, the embodiment of the present invention provides a kind of image forming apparatus, comprising:
Imaging controller 1 is configured as control image forming apparatus and executes imaging operation；
Nonvolatile memory 3 is configured as storing program to be verified, and program to be verified runs institute for image forming apparatus
Program；
Safety chip 2 is configured as after image forming apparatus powers on, store in reading non-volatile storage 3 to
Checking routine, treats that checking routine carries out safety check and that program to be verified is sent to imaging controller 1 is corresponding to school
Program loader is tested, program loader to be verified starts to execute program to be verified after receiving program to be verified；
Wherein, during safety chip 2 treats checking routine progress safety check, if safety chip 2 is determined to school
It tests program and does not meet safety requirements, and when current imaging controller 1 is carrying out program to be verified, the control imaging of safety chip 2
Controller 1 stops executing program to be verified.
It should be noted that safety chip 2 treat checking routine carry out safety check can be it is static and or dynamic,
For example, the program to be verified stored in 2 reading non-volatile storage 3 of safety chip, and be ready for sending it is right to imaging controller 1
The program loader to be verified answered；Such as it can also be and control is imaged after program loader to be verified receives program to be verified
Device 1 starts to execute program to be verified.
It is appreciated that the present invention carries out safety check to 1 program to be executed of imaging controller by safety chip 2,
When program to be verified does not meet safety requirements, safety chip 2, which controls imaging controller 1, to be stopped executing program to be verified, so that
In the process of running, the whole monitoring by safety chip 2 can be good at guaranteeing image forming apparatus imaging controller 1
Safety, good reliability.Meanwhile 1 program to be executed of imaging controller is sent to by the present invention by safety chip 2
As controller 1, to allow imaging controller 1 with safety chip 2 simultaneously from non-without additionally configuring corresponding hardware circuit
Volatile memory 3 obtains program to be verified, therefore further simplifies circuit structure, has saved cost.
Specifically, image forming apparatus indicates to print in the recording medium of such as printing paper for example by computer generation
The device of print data.The example of image forming apparatus include but is not limited to duplicator, printer, facsimile machine, scanner and
The multifunction peripheral of above functions is executed in one single.
Specifically, imaging controller 1 is SoC (System on Chip, system on chip), is configured as control image and is formed
The image forming process operation of device, SoC are used to execute data transmit-receive, order transmitting-receiving, the relevant processing operation of engine control, for example,
How application call interface unit (including but not limited to USB port, wired network port, wireless network port etc.) is passed through
Come sending and receiving data, order, state etc., received print parameters can also be obtained by application program, and resolve to control engine
Mechanism executes the order of specific function, for example, LSU exposure parameter, paper pick-up roller rotational parameters etc.；In addition, for there is user right
The image forming apparatus SoC for authenticating perhaps encryption/decryption process function is also arranged to be able to execute user right certification or add
Close/decryption processing function, and the interface unit in image forming apparatus can also receive the print job number for carrying out automatic drive device
It is ordered according to printing, scanning, fax, or transmission scanning, facsimile data, printing, scanning, FAX mode information etc., Yi Jian
Full chip 2 exchanges the information such as predetermined safety regulation, log with security monitoring service device.
Specifically, safety chip 2 includes trust computing administration module, forms imaging controller in device for monitoring image
The corresponding operation activity of 1 (SoC)；Trust computing (Trusted Computing) in safety chip 2, be for behavior safety and
It is raw, it is widely used in computer and communication system, to improve the safety of system entirety.Information security includes four aspects:
Equipment safety, data safety, content safety and behavior safety；For the behavior safety characteristic for further promoting image forming apparatus,
This embodiment introduces trust computing functions；The corresponding functional module of safety chip 2 that the present embodiment refers to includes four kinds of functions:
Program (or module) starting/operation monitoring function (such as white list strategy), registering functional, audit function, upgrading monitoring function,
Specifically, safety chip 2 is responsible for the driving layer module of supervision image forming apparatus operating system (such as linux system) and is born
The application layer program of duty supervision image forming apparatus, safety chip 2 only allows to run the driving and program within the scope of white list, non-
Driving and program within the scope of white list do not allow to run；Safety chip 2 will record or report to be occurred on image forming apparatus
Driving layer and application layer to image forming apparatus may be implemented in this way and supervised comprehensively for security incident behavior, can be effective
Prevent the unsafe acts of the application program and device drives of imaging controller 1.
Nonvolatile memory 3 is connect with safety chip 2, nonvolatile memory 3 can be NOR flash (flash memory),
NAND flash (flash memory), EEPROM (erasable programmable read only memory), FRAM (ferroelectric memory), MRAM are (magnetic
) and NVSRAM (non-volatile static memory) etc. RAM.
Program loader to be verified for example can be RAM (random access memory), SRAM (static random access memory
Device) and DDR (Double Data Rate synchronous DRAM) etc., program loader to be verified can be inside imaging controller 1
Loader, be also possible to the external load device connecting with imaging controller 1.
In one or more embodiments of the invention, program to be verified includes startup program, operating system
(Operating System, OS) program and application program, wherein startup program is that imaging controller 1 is completed needed for starting
Program, such as Boot program and Uboot program etc., Boot program and Uboot program are imaging control when image forming apparatus starts
Device 1 processed needs bootstrap to be loaded, and the quantity of application program is at least one.In other embodiments, program to be verified
It can also only include application program.
Attached drawing 2 is please referred to, in embodiments of the present invention, safety chip 2 passes through the first communication bus (such as institute in attached drawing 2
The spi bus 1 shown) and 3 communication connection of nonvolatile memory, for reading program to be verified out of nonvolatile memory 3,
Safety chip 2 is used by the second communication bus (such as attached spi bus 2 shown in Fig. 2) and 1 communication connection of imaging controller
In by read program to be verified be sent to the program loader to be verified built in imaging controller 1.
Further, in the present embodiment, safety chip 2 treats checking routine progress safety check and will be to be verified
Program is sent to the corresponding program loader to be verified of imaging controller 1, can specifically include:
Safety chip 2 is during reading program to be verified or after reading program to be verified, to what is read
Program to be verified carries out safety check, while the program to be verified read is sent to program loader to be verified.
Optionally, safety chip 2 can be after reading all programs to be verified, then start to treat checking routine into
Row verification, and program to be verified is sent to program loader to be verified while verification；Alternatively, safety chip 2 read to
During checking routine, safety check is carried out to the program to be verified currently read, and to be verified by what is currently read
Program is sent to program loader to be verified and executes, alternatively, having read program to be verified part journey therein when safety chip 2 is every
When sequence (such as Boot program), safety chip 2 just carries out security verification to the subprogram, while the subprogram being sent
To program loader to be verified, the verification of other parts program (Uboot program, operating system program etc.) is then successively carried out again
And it executes.
Optionally, during safety chip 2 can also be program to be verified, the program to be verified read is pacified
Whole school tests, while the program to be verified read is sent to program loader to be verified；Still optionally further, with Boot program
For, Boot program is divided into many segments, every segment is verified respectively, and every segment is sent to program load simultaneously
Device can not be done directly the corresponding function of current Boot program since program loader receives many segments, so program
Loader can't be done directly the corresponding starting of current Boot program, also can't directly threaten the safety of whole system；
After safety chip 2 all completes verification to every segment program, such program loader is also almost with regard to receiving the entire Boot journey that is over
Sequence, other programs to be verified are also similar.
It is appreciated that the present invention is by adopting when reading or verifying the program to be verified that imaging controller 1 needs to be implemented
With the mode carried out synchronous with verification is executed, the speed that imaging controller 1 is run is improved, when program to be verified is startup program
When, the starting speed of image forming apparatus can be accelerated, and then improve the usage experience of user.
In other embodiment, under the not high scene of the speed of service or starting rate request of image forming apparatus,
Safety chip 2 treats that checking routine carries out safety check and that program to be verified is sent to imaging controller 1 is corresponding to school
Program loader is tested, may include:
Safety chip 2 is during reading program to be verified or after reading program to be verified, first to having read
Program to be verified carry out safety check will just have been read after the program to be verified for determining to have read meets safety requirements
Program to be verified be sent to program loader to be verified.
Optionally, safety chip 2 can first read all programs to be verified, after all program ver-ify to be verified passes through,
All programs to be verified are sent to program loader to be verified again, it, no longer will be to school if program ver-ify to be verified does not pass through
It tests program and is sent to program loader to be verified.Alternatively, safety chip 2 successively treats the part program to be verified in checking routine
(for example, successively verifying to Boot program, Uboot program, operating system program and application program) verifies, when the portion
After dividing program ver-ify to be verified to pass through, then part program to be verified is sent to program loader to be verified and is executed, then again
Carry out reading, verification and the execution of the program to be verified of next part.
It is directed to safety chip 2 above safety check is carried out to the program to be verified that has read, while will read
Program to be verified is sent to the mode of program loader to be verified, further, if safety chip 2 is in the mistake for carrying out safety check
Cheng Zhong, when determining that startup program or operating system program in program to be verified do not meet safety requirements, it is contemplated that imaging control
The operating status of device 1 processed, may include following situations:
If current imaging controller 1 is carrying out startup program or operating system program or application program, safe core
Piece 2, which first controls imaging controller 1, to be stopped executing startup program or operating system program or application program, then controls imaging control
Device 1 resets, so that imaging controller 1 returns to original state；It or is that safety chip 2 first controls the stopping of imaging controller 1
Startup program or operating system program are executed, then controls the power-off of imaging controller 1.
If current imaging controller 1 is not carried out startup program or operating system program or application program, directly control
Imaging controller 1 resets, so that imaging controller 1 returns to original state；It or is that safety chip 2 directly controls imaging
Controller 1 powers off.
It is appreciated that when detecting that imaging controller 1 starts the startup program to be executed or operating system program is not inconsistent
When closing safety requirements, control imaging controller 1 resets or power-off, it is ensured that the safety of image forming apparatus.
It should also be noted that, in one or more embodiments of the invention, if safety chip 2 determines at least one application
The first application program in program does not meet safety requirements, and when current imaging controller 1 is carrying out application program, safe core
Piece 2, which sends error signal control imaging controller 1, to be stopped executing the first application program；If safety chip 2 determines that at least one is answered
Safety requirements is not met with the first application program in program, and current imaging controller 1 is not carrying out startup program, safety
Chip 2 does not allow imaging controller 1 to start the execution to the first application program.
Further, it controls imaging controller 1 for safety chip 2 described above to reset, accordingly, the present invention is implemented
Example provides following hardware plan:
Please continue to refer to attached drawing 2, safety chip 2 is connect with the reset terminal of imaging controller 1, safety chip 2 by
As the reset terminal of controller 1 sends reset enable signal imaging controller 1 is resetted.
Specifically, the pin (GPIO4) of safety chip 2 passes sequentially through the first end (Y) and second end (Z) of first switch 4
It is connect with the reset terminal (Reset) of imaging controller 1, when image forming apparatus powers on, first switch 4 is on state.
In the present embodiment, when program to be verified does not meet safety requirements, safety chip 2 needs to control imaging controller
1 when resetting, and safety chip 2 resets enable signal by pin (GPIO4) output, via the first end (Y) of first switch 4 and the
Two ends (Z) control imaging controller 1 and reset, so that imaging controller 1 returns to the reset terminal (Reset) of imaging controller 1
Original state.
In the present embodiment, resetting enable signal is low level signal, in other embodiments, resets enable signal
It can also be high level signal.
Optionally, first switch 4 includes but is not limited to MOS (metal-oxide-semiconductor, metal-oxide
Object-semiconductor field effect transistor) pipe, triode, IGBT (Insulated Gate Bipolar Transistor, insulated gate pair
Bipolar transistor) etc. any one in electronic switches.
Further, the mode that imaging controller 1 resets is controlled for above-mentioned safety chip 2, accordingly, the present invention is real
It applies example and provides following hardware plan:
Attached drawing 3 is please referred to, image forming apparatus further includes power module and power switch 6, and power switch 6 is connected to power supply
It between module and imaging controller 1, is arranged at and powers for imaging controller 1, safety chip 2 is disconnected by control power switch 6
The enable end for opening and/or generating enabled invalid signals to power module powers off imaging controller 1.
It, can also be with it is understood that power module, for exporting direct current, power module can be single power supply unit
It is to be composed of multiple independent power supply units.Power module can not only power for imaging controller 1, can also be safety
Other hardware modules power supply in the power supply of chip 2 or image forming apparatus.
In the present embodiment, power module include multiple first power source units (A1, A2 as shown in Fig. 3,
A3......An) and multiple second power source units (B1, B2, B3......Bn as shown in Fig. 3), wherein the first power supply
Unit is configured to the power supply of safety chip 2, and second power source unit is configured to the power supply of imaging controller 1.
Accordingly, power switch 6 is variable connector, including multiple switch unit (for convenience of describing, hereinafter by power switch
Each switch unit in 6 is known as first switch unit), the first end (Y) and a second source of each first switch unit
The power output end of unit connects, the power pins of second end (Z) and imaging controller 1 of each first switch unit
(Powerin) it connects.In the present embodiment, image forming apparatus further includes second switch 5, and each first switch unit makes
Energy end (EN) is connect with the first end (Y) of second switch 5, the second end of pin (GPIOx) and second switch 5 of safety chip 2
(Z) it connects.When image forming apparatus powers on, be connected between the first end (Y) and second end (Z) of second switch 5.
When program to be verified does not meet safety requirements, and safety chip 2 needs to control the power-off of imaging controller 1, safe core
Piece 2 can export enabled invalid signals by pin (GPIOx), and enabled invalid signals are transmitted to power supply by second switch 5 and open
The enable end (EN) for closing 6, so that between the first end (Y) and second end (Z) of each first switch unit in power switch 6
Access disconnects, and then multiple second power source units in power module power off imaging controller 1.
In the present embodiment, power switch 6 and second switch 5 are both configured to when enable end receives high level signal
It is enabled that effectively it is invalid to enable when receiving low level signal, therefore, each switch unit in power switch 6 and second switch 5
It can be by PNP triode or PMOS tube as switch.
Attached drawing 4 is please referred to, in other embodiments of the present invention, multiple second power source units are (as of figure 4
B1, B2, B3......Bn) it can be connected with a part by the power pins (Power in) of power switch 6 and imaging controller 1
It connects, another part is directly connect with the power pins of imaging controller 1 (Power in), and the electricity directly with imaging controller 1
The power supply enable end (EN) of second power source unit of source pin (Power in) connection is connect with the first end (Y) of second switch 5,
Therefore, when program to be verified does not meet safety requirements, and safety chip 2 needs to control the power-off of imaging controller 1, safety chip 2
Pin (GPIOx) can export enabled invalid signals control section second power source unit simultaneously power supply enable end (EN) it is enabled
Invalid and power switch 6 disconnects, to realize the purpose of the control power-off of imaging controller 1.
Attached drawing 5 is please referred to, in other embodiments of the present invention, safety chip 2 and imaging controller 1 can be with common portions
(AB1, AB2, AB3......ABn in such as attached drawing 5, for convenience of distinguishing, referred to hereinafter as shared partial power is third to independent power source
Power supply unit), wherein the output end of third power supply unit was both connect with the power pins of safety chip 2, further through power switch
6 connect with the power pins of imaging controller 1, and second power source unit passes through the power pins of power switch 6 and imaging controller 1
(Powerin) it connects.Therefore, when program to be verified does not meet safety requirements, it is disconnected that safety chip 2 needs to control imaging controller 1
When electric, safety chip 2 can export enabled invalid signals by pin (GPIOx), and enabled invalid signals are passed by second switch 5
The enable end (EN) of power switch 6 is transported to, so that the first end (Y) and second of each first switch unit in power switch 6
The access between (Z) is held to disconnect, and then multiple second power source units in power module and third power supply unit stop as imaging
Controller 1 is powered.
Attached drawing 6 is please referred to, in other embodiments of the present invention, safety chip 2 and 1 common sparing of imaging controller
When three power supply units, the output end of third power supply unit was both connect with the power pins of safety chip 2, further through power switch 6
It is connect with the power pins of imaging controller 1, and second power source unit a part passes through power switch 6 and imaging controller 1
Power pins (Powerin) connection, another part are directly connect with the power pins of imaging controller 1 (Power in), and straight
It is opened with second the power supply enable end (EN) for connecing the second power source unit connecting with the power pins of imaging controller 1 (Power in)
Close 5 first end (Y) connection；Therefore, when program to be verified does not meet safety requirements, safety chip 2 needs to control imaging control
When device 1 powers off, safety chip 2 can export enabled invalid signals by pin (GPIOx), and enabled invalid signals are opened by second
It closes 5 and is transmitted to the enable end (EN) of power switch 6 and the enable end (EN) of part second power source unit, so that power switch 6
In each first switch unit first end (Y) and second end (Z) between access disconnect and part second power source unit
Enable end it is enabled invalid, and then multiple second power source units in power module and third power supply unit stop as imaging control
Device 1 is powered.
It should be noted that numerous embodiments listed above are merely illustrative, the present invention can also have other a variety of phases
The embodiment answered, does not describe one by one herein.
Further, it may include: that safety chip 2 is read that safety chip 2, which treats checking routine and carries out the process of safety check,
Program to be verified is taken, arithmetic check information is generated, it is whether full by comparison calculation check information and preset safety check information
Sufficient predetermined relationship judges whether program to be verified meets safety requirements, for example, safety chip 2 by itself computing circuit or
Person's operation part treats checking routine and carries out logical operation, obtains arithmetic check information, safety chip 2 further passes through logic
Comparison circuit or logical comparison code, are compared arithmetic check information and safety check information, judge that arithmetic check is believed
Whether breath and safety check information meet predetermined relationship (such as equal), if it is satisfied, then determine program to be verified be it is complete,
It is not modified, meets safety requirements, if conditions are not met, then determining that program to be verified is to be modified, do not meet safety
It is required that.
Safety check information includes but is not limited to a preset check code, is preset in the safety check information in the present invention
Check code can be and be directly stored in advance, be also possible to preparatory (for example, before factory) to complete information to be verified,
Verification is carried out and by obtained check results as safety check information using preset rules, and the safety check information is stored.
When needing to carry out security verification (for example, when use process post sales needs to start), safety chip 2 is wanted according to above-mentioned
It asks, reads program to be verified and safety check information, and treat checking routine and carry out logical operation, obtain arithmetic check information,
Then arithmetic check information and safety check information are compared, and then obtain check results.
The embodiment of the invention also provides a kind of control method of image forming apparatus, image forming apparatus includes imaging control
Device, nonvolatile memory and safety chip processed, wherein imaging controller is configured as control image forming apparatus and executes imaging
Operation, nonvolatile memory are configured as storing program to be verified, and program to be verified is that image forming apparatus operation is used
Program；
Attached drawing 7 is please referred to, the control method of image forming apparatus includes:
Step S01: after image forming apparatus powers on, to be stored in safety chip reading non-volatile storage to school
Test program.
Step S02: treating checking routine progress safety check and it is corresponding that program to be verified is sent to imaging controller
Program loader to be verified；
Step S03: program loader to be verified starts to execute program to be verified after receiving program to be verified；Wherein, In
During safety chip treats checking routine progress safety check, if safety chip determines that program to be verified does not meet safety and wants
Ask, and when current imaging controller is carrying out program to be verified, safety chip control imaging controller stop executing it is to be verified
Program.
Further, the program to be verified stored in reading non-volatile storage treats checking routine and carries out safe school
It tests and program to be verified is sent to the corresponding program loader to be verified of imaging controller, specifically include:
Safety chip is during reading program to be verified or after reading program to be verified, to read to
Checking routine carries out safety check, while the program to be verified read is sent to program loader to be verified.
Further, the program to be verified stored in reading non-volatile storage treats checking routine and carries out safe school
It tests and program to be verified is sent to the corresponding program loader to be verified of imaging controller, specifically include:
Safety chip is during reading program to be verified or after reading program to be verified, first to having read
Program to be verified carries out safety check will just read after only determining that the program to be verified read meets safety requirements
Program to be verified be sent to program loader to be verified.
Further, program to be verified includes startup program, and startup program is journey needed for imaging controller completes starting
Sequence；
If safety chip determines program to be verified and does not meet safety requirements, and current imaging controller be carrying out it is to be verified
When program, safety chip, which controls imaging controller, to be stopped executing program to be verified, is specifically included:
If safety chip determines that startup program does not meet safety requirements, and current imaging controller is carrying out startup program
When, safety chip, which first controls imaging controller, to be stopped executing startup program, then controls imaging controller reset, so that imaging control
Device processed returns to original state；Stop executing startup program alternatively, safety chip first controls imaging controller, then controls imaging control
Device power-off.
Further, the reset terminal of safety chip and imaging controller connects, and safety chip is by imaging controller
Reset terminal sends reset enable signal and imaging controller is resetted.
It should be noted that the control method of the image forming apparatus provided in the embodiment of the present invention is more specifically
The bright corresponding contents that may refer to image forming apparatus provided in an embodiment of the present invention are no longer retouched one by one herein to avoid repeating
It states.
The present embodiment provides a kind of computer readable storage medium, computer is stored on the computer readable storage medium
Program realizes the control method of image forming apparatus in embodiment when the computer program is executed by processor, to avoid repeating,
It does not repeat one by one herein.Alternatively, realizing in embodiment each mould in image forming apparatus when the computer program is executed by processor
Block/unit function does not repeat one by one herein to avoid repeating.
Attached drawing 8 is please referred to, the embodiment of the present invention provides a kind of image forming apparatus 50, the image forming apparatus of the embodiment
50 include: processor 51, memory 52 and are stored in the program 53 that can be run in memory 52 and on processor 51, the journey
The control method of the image forming apparatus in embodiment is realized when sequence 53 is executed by processor 51, it is different herein to avoid repeating
One repeats.
Image forming apparatus 50 may include, but are not limited to processor 51, memory 52.Those skilled in the art can manage
Solution, Fig. 8 is only the example of image forming apparatus 50, does not constitute the restriction to image forming apparatus 50, may include than figure
Show more or fewer components, perhaps combine certain components or different components, such as electronic equipment can also include input
Output equipment, network access equipment, bus etc..
Processor 51 can be central processing unit (Central Processing Unit, CPU), can also be other
General processor, digital signal processor (Digital Signal Processor, DSP), specific integrated circuit
(Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components etc..General processor can be microprocessor or the processor is also possible to any conventional processor
Deng.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided by the present invention, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the division of unit,
Only a kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can be with
In conjunction with or be desirably integrated into another system, or some features can be ignored or not executed.Another point, it is shown or discussed
Mutual coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING of device or unit or
Communication connection can be electrical property, mechanical or other forms.
Unit may or may not be physically separated as illustrated by the separation member, shown as a unit
Component may or may not be physical unit, it can and it is in one place, or may be distributed over multiple networks
On unit.It can some or all of the units may be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of hardware adds SFU software functional unit.
The above-mentioned integrated unit being realized in the form of SFU software functional unit can store and computer-readable deposit at one
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer
It is each that device (can be personal computer, server or network equipment etc.) or processor (Processor) execute the present invention
The part steps of embodiment method.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (Read-Only
Memory, ROM), random access memory (Random Access Memory, RAM), magnetic or disk etc. is various to deposit
Store up the medium of program code.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (16)
1. a kind of image forming apparatus characterized by comprising
Imaging controller is configured as control described image and forms device execution imaging operation；
Nonvolatile memory is configured as storing program to be verified, and the program to be verified is that described image forms device fortune
Row program used；
Safety chip is configured as reading storage in the nonvolatile memory after described image forms device and powers on
The program to be verified carries out safety check to the program to be verified and the program to be verified is sent to the imaging
The corresponding program loader to be verified of controller, the program loader to be verified start to hold after receiving the program to be verified
The row program to be verified；
Wherein, during the safety chip carries out safety check to the program to be verified, if the safety chip is true
The fixed program to be verified does not meet safety requirements, and when presently described imaging controller is carrying out the program to be verified,
The safety chip, which controls the imaging controller, to be stopped executing the program to be verified.
2. image forming apparatus as described in claim 1, which is characterized in that the safety chip is reading the journey to be verified
During sequence or after reading the program to be verified, safety check is carried out to the program to be verified read, simultaneously
The program to be verified read is sent to the program loader to be verified.
3. image forming apparatus as described in claim 1, which is characterized in that the safety chip is reading the journey to be verified
During sequence or after reading the program to be verified, safety check first is carried out to the program to be verified read, when
After determining that the program to be verified read meets safety requirements, the program to be verified read is just sent to institute
State program loader to be verified.
4. image forming apparatus as claimed in claim 1 or 2, which is characterized in that the program to be verified includes startup program,
The startup program is program needed for the imaging controller completes starting；
If the safety chip determines that the startup program does not meet safety requirements, and presently described imaging controller is carrying out
When the startup program, the safety chip, which first controls the imaging controller, to be stopped executing the startup program, then controls institute
Imaging controller reset is stated, so that the imaging controller returns to original state；Alternatively, described in the safety chip first controls
Imaging controller stops executing the startup program, then controls the imaging controller power-off.
5. image forming apparatus as claimed in claim 4, which is characterized in that the safety chip and the imaging controller
Reset terminal connection, the safety chip by the reset terminal of the imaging controller send reset enable signal make it is described at
As controller resets.
6. image forming apparatus as claimed in claim 4, which is characterized in that it further includes power module that described image, which forms device,
And power switch, the power switch are connected between the power module and the imaging controller, the safety chip is logical
It crosses to control the power switch and disconnect and/or generate the enable end of enabled invalid signals to the power module and makes that control is imaged
Device power-off.
7. image forming apparatus as claimed in claim 1 or 2, which is characterized in that the program to be verified includes at least one
Application program, if the safety chip determines that the first application program at least one described application program does not meet safety and wants
It asks, the safety chip forbids the imaging controller to execute first application program.
8. a kind of control method of image forming apparatus, which is characterized in that described image formed device include imaging controller, it is non-
Volatile memory and safety chip, wherein the imaging controller be configured as control described image formed device execute at
As operation, the nonvolatile memory is configured as storing program to be verified, and the program to be verified is formed for described image
Device operation program used；
The described method includes:
After described image, which forms device, to be powered on, the safety chip read store in the nonvolatile memory it is described to
Checking routine carries out safety check to the program to be verified and the program to be verified is sent to the imaging controller
Corresponding program loader to be verified, the program loader to be verified start described in execution after receiving the program to be verified
Program to be verified；
Wherein, during the safety chip carries out safety check to the program to be verified, if the safety chip is true
The fixed program to be verified does not meet safety requirements, and when presently described imaging controller is carrying out the program to be verified,
The safety chip, which controls the imaging controller, to be stopped executing the program to be verified.
9. control method as claimed in claim 8, which is characterized in that described to read storage in the nonvolatile memory
The program to be verified carries out safety check to the program to be verified and the program to be verified is sent to the imaging
The corresponding program loader to be verified of controller, specifically includes:
The safety chip is during reading the program to be verified or after reading the program to be verified, to
The program to be verified read carries out safety check, while the program to be verified read is sent to the program to be verified and is loaded
Device.
10. control method as claimed in claim 8, which is characterized in that described to read storage in the nonvolatile memory
The program to be verified, to the program to be verified carry out safety check and by the program to be verified be sent to it is described at
As the corresponding program loader to be verified of controller, specifically include:
The safety chip is first right during reading the program to be verified or after reading the program to be verified
The program to be verified read carries out safety check, only determines that the program to be verified read meets safety requirements
Afterwards, the program to be verified read is just sent to the program loader to be verified.
11. control method as claimed in claim 8 or 9, which is characterized in that the program to be verified includes startup program, institute
Stating startup program is program needed for the imaging controller completes starting；
If the safety chip determines that the program to be verified does not meet safety requirements, and presently described imaging controller is just
When executing the program to be verified, the safety chip, which controls the imaging controller, to be stopped executing the program to be verified,
It specifically includes:
If the safety chip determines that the startup program does not meet safety requirements, and presently described imaging controller is carrying out
When the startup program, the safety chip, which first controls the imaging controller, to be stopped executing the startup program, then controls institute
Imaging controller reset is stated, so that the imaging controller returns to original state, alternatively, described in the safety chip first controls
Imaging controller stops executing the startup program, then controls the imaging controller power-off.
12. control method as claimed in claim 11, which is characterized in that the safety chip is answered with the imaging controller
The connection of position end, the safety chip make the imaging by sending reset enable signal to the reset terminal of the imaging controller
Controller resets.
13. control method as claimed in claim 11, which is characterized in that described image formed device further include power module and
Power switch, the power switch are connected between the power module and the imaging controller, and the safety chip passes through
The enable end for controlling the power switch disconnection and/or generation enabled invalid signals to the power module makes imaging controller
Power-off.
14. control method as claimed in claim 8 or 9, which is characterized in that the program to be verified includes at least one application
Program, it is described to read the program to be verified stored in the nonvolatile memory, the program to be verified is pacified
Whole school tests and the program to be verified is sent to the corresponding program loader to be verified of the imaging controller, specific to wrap
It includes:
If the safety chip determines that the first application program at least one described application program does not meet safety requirements, described
Safety chip forbids the imaging controller to execute first application program.
15. a kind of storage medium, the storage medium includes the program of storage, wherein in described program operation described in control
Equipment executes method described in 8 to 14 any one where storage medium.
16. a kind of image forming apparatus, including memory and processor, the memory is for storing the letter including program instruction
Breath, the processor are used to control the execution of program instruction, it is characterised in that: described program instruction is loaded and executed by processor
Method described in Shi Shixian claim 8 to 14 any one.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910832398.8A CN110536042B (en) | 2019-09-04 | 2019-09-04 | Image forming apparatus, control method thereof, and storage medium |
| PCT/CN2020/095310 WO2020259285A1 (en) | 2019-06-28 | 2020-06-10 | Image forming apparatus and securty control system for image forming apparatus |
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| CN201910832398.8A CN110536042B (en) | 2019-09-04 | 2019-09-04 | Image forming apparatus, control method thereof, and storage medium |
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| WO2020259285A1 (en) * | 2019-06-28 | 2020-12-30 | 珠海奔图电子有限公司 | Image forming apparatus and securty control system for image forming apparatus |
| CN112445444A (en) * | 2020-11-27 | 2021-03-05 | 珠海奔图电子有限公司 | Image forming apparatus and security control system |
| CN112445440A (en) * | 2020-11-20 | 2021-03-05 | 珠海奔图电子有限公司 | Image forming apparatus, start control method thereof and storage medium |
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| CN110536042B (en) | 2021-09-28 |
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