CN104375920B - There is the multimedia device and its operating method of error detection function during startup - Google Patents
There is the multimedia device and its operating method of error detection function during startup Download PDFInfo
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- CN104375920B CN104375920B CN201410234953.4A CN201410234953A CN104375920B CN 104375920 B CN104375920 B CN 104375920B CN 201410234953 A CN201410234953 A CN 201410234953A CN 104375920 B CN104375920 B CN 104375920B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2284—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing by power-on test, e.g. power-on self test [POST]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2273—Test methods
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Abstract
The present invention relates to multimedia device during a kind of startup with error detection function, including：Central processing unit (CPU), it performs the start-up operation for driving the software for being stored in memory using startup file when being supplied to power supply, and start completion signal is exported when completing the start-up operation；Display, its driving condition display picture according to the central processing unit (CPU) to the software；And sub- microprocessor, it performs electric power starting operation when being received externally interrupt signal in the case of sleep pattern, by each component of the power supply inputted from vehicle supply multimedia device, the startup file is transmitted to cause to perform the start-up operation to the central processing unit (CPU), it is judged as making a mistake when not receiving start completion signal from the central processing unit (CPU), and confirming the position that the mistake occurs, control to be shown on the wrong information with picture by the display.
Description
Technical field
The present invention relates to a kind of vehicle multimedia device, more particularly to position occurs for detection mistake during multimedia device startup
The technology put.
Background technology
Existing multimedia device is to control its power supply and external interrupt by sub- microprocessor (Sub Micom), and is given
When central processor (CPU) supplies power supply, dodged from non-or (Not Or, abbreviation NOR) or non-and (Not And, hereinafter referred to as NAND)
Fast memory (FLASH Memory) reads software, and using built-in storage (working memory), i.e., synchronous dynamic random is deposited
Reservoir (Synchronous Dynamic random access memory, hereinafter referred to as SDRAM) runs software.
The sub- microprocessor of multimedia device is by being formed in internal low-dropout regulator (Low-Dropout
Regulator, LDO Regulator) keep receiving the battery supply from vehicle supply, to maintain its sleep pattern situation.When
Being received in the case of sleep pattern can be to the component (abbreviation of in-car part electric power supply in the state of vehicle does not start car
ACC) during the external interrupt signal such as unlatching, sub- microprocessor opens the power zone block (DC-DC converter) of multimedia device, Xiang Duo
Media apparatus supplies power supply.The sub- microprocessor reset central processing unit when switching on power to multimedia device, by general different
Step transceiver (Universal asynchronous receiver/transmitter, hereinafter referred to as UART) Control on Communication makes
Obtain central processing unit and enter start-up mode.In addition the sudden strain of a muscle such as non-or memory is stored in into the central processing unit reading of start-up mode
Software on fast memory, utilize built-in storage, i.e. SDRAM activation softwares.After software is activated, the centre of multimedia device
Reason device control membrane transistor LCDs (Thin Film Transistor LCD, abbreviation TFT LCD) etc. to show
Picture, and the digital signal processor (Digital Signal Processor, abbreviation DSP) for being formed in inside is controlled, pass through
Amplifier integrated circuit (Amplifier IC, abbreviation AMP IC) exports sound.The central processing unit of other multimedia device
By video encoder by the composite video baseband signal received from rear camera (composite video baseband
Signal, abbreviation CVBS) analog image signal is converted to data signal, and the data signal of conversion passes through TFT LCD and shows rear
The picture of camera shooting.For this operation, the sub- microprocessor of multimedia device is by UART communication modules, in utilization
Confirmation (ACK) signal of central processor is sustainable to confirm its mode of operation.
When to central processing unit abnormal electrical power supply, bad, nand memory memory block caused by software error or defect is damaged
The many reasons such as the communication failures such as bad, SDRAM cause multimedia device can not normal operating mistake when, sub- microprocessor passes through
UART sends wake-up signal to central processing unit again so that central processing unit can restart.And then called out if resending
Awake signal but still makes a mistake, and the power supply that sub- microprocessor resets central processing unit again makes it possible to restart.
But as above existing multimedia device is the mode of operation that central processing unit is persistently confirmed by sub- microprocessor,
Allow and restarted when making a mistake, but sub- microprocessor is with when central processing unit can not start from the beginning
Central processor can not communicate, the reason for also just having no idea to confirm generation problem.Needed when being made a mistake on multimedia device
Unload and disassemble multimedia device, and physics confirmation is carried out one by one to main composition parts such as power end, memory interfaces, just may be used
The reason for confirm to make a mistake.Also, this error reason can not directly be confirmed by user, it is necessary to by professional's (maintenance
Technician) just it has been confirmed that confirm mistake occur the reason on generation time and cost issues.
The content of the invention
Technical problem
It can be shown it is an object of the invention to provide a kind of when the start-up operation of multimedia device makes a mistake with picture
Show and store the technical scheme of error reason.
Technical scheme
The multimedia in order to reach above-mentioned purpose, during according to the startup of one aspect of the invention with error detection function fills
Put including：Central processing unit, it performs the startup for driving the software for being stored in memory using startup file when being supplied to power supply
Operation, start completion signal (ACK) is exported when completing the start-up operation；Display, it is according to the central processing unit pair
The driving condition display picture of the software；And sub- microprocessor, it is received externally interruption in the case of sleep pattern
Electric power starting operation is performed during signal, the power supply inputted from vehicle is supplied to each component of multimedia device, opened described in transmission
Dynamic file to perform the start-up operation to the central processing unit, when not receiving start completion from the central processing unit
It is judged as making a mistake during signal, and confirms the position that the mistake occurs, control with picture to be shown by the display
Show on the wrong information
In addition, in order to reach above-mentioned purpose, included according to the multimedia device of one aspect of the invention：Central processing unit,
It performs the start-up operation for driving the software for being stored in memory using startup file when being supplied to power supply, and described in completion
Start completion signal is exported during start-up operation；Display, it includes video encoder and LCDs (LCD) module, and presses
Driving condition according to the central processing unit to the software, pass through the liquid crystal display module display picture；Rear images
Head, it is connected to the video encoder, for shooting the rear of vehicle；And sub- microprocessor, it is in sleep pattern situation
Under perform electric power starting operation when being received externally interrupt signal, by power supply input from the vehicle supply multimedia device
Each component, transmit the startup file to the central processing unit so that performing the start-up operation, and with the startup
Operation independently directly controls the video encoder, and the central processing unit does not complete described open within the time set in advance
During dynamic operation, the sub- microprocessor controls the video encoder to be shown with picture by the liquid crystal display module
The image of the rear camera shooting.
In addition, in order to reach above-mentioned purpose, wrong according to detection when starting multimedia device of one aspect of the invention
Method includes：Be confirmed whether to be received externally interrupt signal in the case of sleep pattern the step of；Result is confirmed to receive
Electric power starting operation is performed during the interrupt signal, and the power supply inputted from vehicle is supplied to each structure of the multimedia device
The step of part；Judge whether from the step that start completion signal is received using the central processing unit for supplying power supply execution start-up operation
Suddenly；Judged result is when not receiving the start completion signal, is judged as making a mistake and confirms what the mistake occurred
The step of position；And display includes the step of picture of the wrong related information and its generation positional information.
Technique effect
According to one embodiment of present invention, mistake occurs in start-up course for the central processing unit (CPU) of multimedia device
Mistake and be stored in while the error message is shown on picture and is supplied to user in memory, user is directly confirmed
Wrong occurrence cause in multimedia device.For example, when making a mistake, without decomposing multimedia device, it is confirmed one by one
Composition finds out problem component, according to the present invention, directly confirms problem component using the error message of storage.
In addition, it is sub according to another embodiment of the invention, central processing unit (CPU) is cast aside, sub- microprocessor can also
Display is directly controlled, so even in multimedia device because CPU can also be passing through in the state of start-up operation without performing
The image that rear camera is captured is shown with picture, there is provided to user.
Brief description of the drawings
Fig. 1 is the frame of the multimedia device during startup of display one embodiment of the present of invention with error detection function
Figure；
Fig. 2 is the stream for the method for detecting mistake during the startup of display an alternative embodiment of the invention using multimedia device
Cheng Tu；
Fig. 3 is the flow of the method for confirming multimedia device detection errors present of display another embodiment of the present invention
Figure.
Description of reference numerals
100:Multimedia device 110:User interface
120:Central processing unit 130:Display
131:Video encoder 132:LCD module
140:Rear camera 150:Memory
160:Sub- microprocessor (Sub MICOM)
Embodiment
The multimedia in order to reach above-mentioned purpose, during according to the startup of one aspect of the invention with error detection function fills
Put including：Central processing unit, it performs the startup for driving the software for being stored in memory using startup file when being supplied to power supply
Operation, start completion signal (ACK) is exported when completing the start-up operation；Display, it is according to the central processing unit pair
The driving condition display picture of the software；And sub- microprocessor, it is received externally interruption in the case of sleep pattern
Electric power starting operation is performed during signal, each component that the power supply inputted from vehicle supply multimedia device is included, transmits institute
Startup file is stated to the central processing unit so that performing the start-up operation, when not receiving startup from the central processing unit
Complete to be judged as making a mistake during signal (ACK), and confirm the position that the mistake occurs, control to pass through the display
Shown with picture on the wrong information.
The sub- microprocessor confirms when occurring described wrong during the central processing unit performs start-up operation
Whether power supply is being supplied to the central processing unit, it is multiple when confirming result to supply power supply to the central processing unit
The position central processing unit to confirm the position that the mistake occurs after re-executing the start-up operation.
Also, the sub- microprocessor is during the central processing unit performs start-up operation not from the centre
When reason device receives the initial value for representing system unlatching (syson), it is judged as that the kernel in the central processing unit makes a mistake,
When not receiving kernel identification (ID) value from the central processing unit during the central processing unit performs start-up operation, sentence
Break to be made a mistake in the central processing unit, the centre is connected to when attempting to be stored in using startup file driving
When managing the software of the memory of device, if the software can not be driven, it is judged as making a mistake in the memory.
Also, when the sub- microprocessor confirms the position that the mistake occurs, execution passes through internal integrated circuit
The relevant information for the position that the mistake occurs is sent to institute by (Inter-Integrated Circuit, abbreviation I2C) communication
State the operation of display and be saved at least one of operation of memory operation, the sub- microprocessor is in the electricity
Source is opened operation and made a mistake, thus the power supply inputted from the vehicle can not be supplied to each structure of the multimedia device
During part, output warning tones notify user.
In addition, in order to reach above-mentioned purpose, included according to the multimedia device of one aspect of the invention：Central processing unit,
It performs the start-up operation for the software for being stored in memory using startup file when being supplied to power supply, and described in completion
Start completion signal (ACK) is exported during start-up operation；Display, it includes video encoder and LCDs (LCD) module,
Driving condition according to the central processing unit to the software, pass through the LCDs (LCD) module display picture；Afterwards
Square camera, it is connected to the video encoder, for shooting the rear of vehicle；And sub- microprocessor, it is in sleep mould
Electric power starting operation is performed when interrupt signal is received externally in the case of formula, the power supply inputted from the vehicle is supplied into more matchmakers
Each component of body device, transmit the startup file to the central processing unit so that performing the start-up operation, and with institute
State start-up operation and independently directly control the video encoder；Wherein described central processing unit within the time set in advance not
When completing the start-up operation, the sub- microprocessor controls the video encoder to cause by the liquid crystal display module
The image of the rear camera shooting is shown with picture.
In addition, in order to reach above-mentioned purpose, wrong according to detection when starting multimedia device of one aspect of the invention
Method includes：Be confirmed whether to be received externally interrupt signal in the case of sleep pattern the step of；Result is confirmed to receive
Electric power starting operation is performed during the interrupt signal, and the power supply that is inputted from vehicle is supplied to each component of multimedia device
Step；Judge whether to receive start completion signal from using the central processing unit for supplying power supply execution start-up operation
(ACK) the step of；Judged result is when not receiving start completion signal (ACK), to be judged as making a mistake and confirm
The step of position that the mistake occurs；And display includes the related information of the mistake and the picture of positional information occurs in it
The step of face.
Here, the step of confirming the position that the mistake occurs includes not receiving the system of representative from the central processing unit
When opening the initial value of (syson), it is judged as making a mistake in the central processor core, is not connect from the central processing unit
When receiving kernel discre value, be judged as making a mistake in the central processing unit, and when can not drive connection in the center
During the software stored in the memory of processor, it is judged as the memory makes a mistake the step of.
Also, the method for detection mistake also includes when starting multimedia device：When not receiving the start completion signal
When be confirmed whether to the central processing unit supply power supply the step of；Result is confirmed to be supplied to the central processing unit
During power supply, the central processing unit is resetted so that the step of re-executing the start-up operation；And in the central processing unit
The step of position that the mistake occurs is confirmed during re-executing start-up operation, in addition to the rear of the vehicle is taken the photograph
The image photographed as head is shown in the step of picture is supplied to user.
The preferred embodiment being described with reference to, foregoing and additional various aspects of the invention will be more clear
It is clear.Embodiments of the invention described further below, make skilled addressee readily understands that and implementing.
Fig. 1 is the frame of the multimedia device during startup of display one embodiment of the present of invention with error detection function
Figure.When multimedia device 100 according to an embodiment of the invention makes a mistake in the start-up operation of central processing unit 120,
Memory is arrived in storage while the picture for showing the error message is supplied into user, so that user can directly confirm more matchmakers
The error reason occurred in body device 100.Also, the micro- place of of multimedia device 100 according to another embodiment of the invention
Device 160 is managed independent of central processing unit 120, display 130 also can be directly controlled, even if so as to which central processing unit 120 is not held
The start-up operation of row multimedia device 100, the image shot by rear camera 140 can also be shown with picture and carried
Supply user.
Therefore, the multimedia device 100 when starting shown in Fig. 1 with error detection function includes user interface 110, center
Processor 120, display 130, rear camera 140, memory 150 and sub- microprocessor 160.
User interface 110 is for the component for the requirement order (external interrupt) for receiving user, can receive electric power on/off
(ON/OFF) the requirement order of user such as.
For example, user interface 110 can be operated by the key case (key box) of user (driver), receive vehicle and do not send out
In the case of motor-car the structure (hereinafter referred to as ACC) of in-car part electric power supply can be given to be turned on and off etc. on vehicle power supply
Command signal.At this moment ACC openings are transformed into by user interface 110, multimedia device 100 can be from the battery of vehicle
Module obtains power supply supply.
In another example user interface 110 can be more matchmakers for being connected according to the requirement order on or off of user with vehicle
The component of the operation of itself of body device 100.At this moment vehicle can be that the ACC that power supply can be supplied to multimedia device 100 is opened
State.By user interface 110, during input operation start up command signals, multimedia device 100 can be given to supply working power
(citing more than 9V power supply).
Central processing unit 120 is used for the software (operating system) for driving multimedia device 100, can be held when being supplied to power supply
The start-up operation of row multimedia device 100.Specifically, central processing unit 120 can be utilized and specially deposited when obtaining power supply supply
The startup file of storage, the software for being stored in memory 150 is read, prepared for driving multimedia device 100.
Display 130 is used for display picture, it may include video encoder 131 and LCDs (Liquid
Crystal Display, abbreviation LCD) module 132.Specifically, display 130 can be by the driving of multimedia device 100
The Information Pull video encoder 131 received is converted to digital image information.And picture can be used by LCD module 132
The digital image information of the display conversion of video encoder 131 is simultaneously supplied to user.For this display 130, i.e. video encoder 131
It can be communicated to connect by I2C with central processing unit 120, be operated under the control of central processing unit 120.
Also, when being made a mistake during starting multimedia device 100, display 130 can be shown on picture
The error message.Therefore, the video encoder 131 of display 130 can also be communicated to connect with sub- microprocessor 160 by I2C,
Operated under the control of sub- microprocessor 160.At this moment, display 130 can utilize internal screen display (On Screen
Display, abbreviation OSD) function, the error message is included to be supplied to user on picture.That is, in multimedia device 100
Even if central processor 120 made a mistake when starting can not normal operating, display 130 still is able to by sub- microprocessor 160
Control, is operated using osd function.
And then the video encoder 131 of display 130 can be connected with rear camera 140.Here, rear camera 140
The camera in vehicle precalculated position is installed on, shoots the rear of vehicle.Display 130 will be shot by rear camera 140
Image is converted to digital image information using video encoder 131 and can be by the display picture of LCD module 132.
Memory 150 is used for data storage, can include the multiple memories being connected with central processing unit 120.For example, deposit
Reservoir 150 can include nand memory and SDRAM memory.The SDRAM that memory 150 is included can be stored for driving
The software (operating system) of multimedia device 100.
Sub- microprocessor 160 detects the mistake occurred in the start-up course of multimedia device 100 using central processing unit 120.
Specifically, when sub- microprocessor 160 receives external interrupt signal (electric power starting operation) by user interface 110, by vehicle
Battery supply (working power) the supply central processing unit 120 of battery input so that multimedia device 100 can start.In addition,
The battery of sub- microprocessor 160 and vehicle is directly connected to, and passes through low-dropout regulator (Low Drop Out regulator, LDO
Regulator) keep receiving the normal power supplys of 3.3V, most blocks does not have the feelings that power supply supplies in multimedia device 100
, still can be with the operation of perform detection mistake under condition.In being received externally in the case of sleep pattern by user interface 110
During break signal, sub- microprocessor 160 is activated (Wake-up), and controls and most blocks into multimedia device 100 are supplied
To working power.
In addition, sub- microprocessor 160 can also have other memory space (the depositing in addition different from memory 150
Reservoir).The other memory includes ram region and ROM area, and ram region can be stored for starting multimedia device 100
Central processing unit 120 startup file, ROM area can store for detect on startup mistake test program.
Sub- microprocessor 160 can pass through UART (Universal Asynchronous Receiver/Transmitter；
UART) communicate and send start-up operation order to central processing unit 120, can also receive corresponding response signal.In addition, sub- microprocessor
Device 160 can also be by utilizing JTAG (or debugging interface) (Joint Test from central processing unit 120
Action Group, abbreviation JTAG) port receive signal, detect whether to make a mistake when multimedia device 100 starts.
Specifically, sub- microprocessor 160 (is turned on the power dynamic being received externally interrupt signal by user interface 110
Make) and it is battery supply (working power) supply of Vehicular battery input is more including central processing unit 120 when being activated
Multiple blocks in media apparatus 100.At this moment, multiple blocks can separately obtain power supply supply in multimedia device 100.I.e.
Even if being configured to a block occurs power issue, the structure of the power supply of other blocks is not interfered with yet.
The central processing unit 120 for being switched on working power utilizes the other memory space for being stored in sub- microprocessor 160
The startup file of (memory in addition) performs start-up operation.Sub- microprocessor 160 can be led to by UART after the completion of start-up operation
Believer in a certain religion's central processing unit 120 receives start completion signal (ACK).
But when not receiving start completion signal from central processing unit 120, sub- microprocessor 160 is judged as holding
There occurs mistake during row start-up operation, whereby it was confirmed that the position made a mistake.Sub- microprocessor 160 is in multimedia
The operating method of mistake is detected in the start-up course of device 100 by reference picture 2 and Fig. 3 flow chart, is specifically described below.
When sub- microprocessor 160 does not receive start completion signal within the time set in advance from central processing unit 120,
Display 130 can be independently controlled with central processing unit 120.It is and then if true using the signal received by central processing unit 120
Recognize and made a mistake when starting multimedia device 100, then sub- microprocessor 160 can utilize the OSD work(inside display 130
Can, wrong related presentation of information is supplied to user in picture.
In addition, the related information of the mistake occurred when starting can be stored in other memory space by sub- microprocessor 160
(memory in addition).Error message is stored as above, so as to multimedia device 100 from vehicle unload maintenance down when, maintenance people
Member can utilize the error message of storage to be easily found the position made a mistake.
On the one hand, sub- microprocessor 160 does not receive start completion within the time set in advance from central processing unit 120
During signal, i.e., when start-up operation is not completed within the time set in advance, sub- microprocessor 160 can control display 130 to make
The image that rear camera 140 must be shot is included on picture.
Specifically, in the given time in the state of no completion start-up operation, the patten transformation of multimedia device 100 arrives
During rear view of vehicle screening-mode, sub- microprocessor 160 can by the image that rear camera 140 is shot regarding by display 130
Frequency encoder 131 is converted to digital image information, is included the digital image information of conversion on picture by LCD module 132
It is supplied to user.Now, the patten transformation of multimedia device 100 is the state of rear view of vehicle screening-mode, for example, it may be car
Speed changer be changed to move backward the state of (R) shelves, user by user interface 110 input user require command signal (such as：
Open auxiliary system for parking) state.
As described above, the sub- microprocessor of the present invention independently can directly control display with central processing unit, even if so as to
Central processing unit can not perform the start-up operation of multimedia device, the shadow that will can also be shot as needed by rear camera
User is supplied to as being shown in picture.
Hereinafter, the flow chart of reference picture 2 illustrates the method for detection mistake when multimedia device starts.
First, when being received externally interrupt signal (ACC ON) by user interface 110 in the step s 100, in step
The sub- microprocessor 160 in sleep pattern is activated in S200.Specifically, the sub- microprocessor 160 being activated is defeated by vehicle
All blocks of battery supply (working power) the supply multimedia device 100 entered including central processing unit 120.
In step S300, sub- microprocessor 160 is led to by the central processing unit 120UART with being switched on working power
Letter, is confirmed whether to receive start completion signal (ACK) from central processing unit 120.
, can be true in step S400 neutrons microprocessor 160 if receiving start completion signal from central processing unit 120
The os starting for recognizing multimedia device 100 is completed.After start completion, central processing unit 120 performs rear camera behaviour
The multimedia operations such as work and audio frequency and video navigation (Audio Video Navigation, abbreviation AVN) system, and display can be passed through
Device 130 exports coherent video signal on picture.
If result is confirmed in step S300 not receive (the pre- timing of start completion signal from central processing unit 120
In), then it is able to confirm that during step S500 neutrons microprocessor 160 is judged as os starting there occurs mistake
The position made a mistake.
When judging in step S500 there occurs during mistake, first, work is confirmed in step S600 neutrons microprocessor 160
Power supply whether most blocks in normal supply to multimedia device 100.
When confirming that result supplies (such as supply power supply is less than 9V) for working power is improper in step S600, in step
S610 neutrons microprocessor 160 can interpolate that to control the DC_DC converters of all working power supply of multimedia device 100 to occur
Mistake.
When judging that all working power supply of multimedia device 100 makes a mistake in step S610, in step S620 neutrons
By the amplifier integrated circuit (AMP IC) of vehicle, give a warning microprocessor 160 sound.Because when the work electricity of supply
Display 130 when source is improper in multimedia device 100 can not also obtain enough power supplys, can not operate, therefore can not use picture
Face shows mistake to inform user.So sub- microprocessor 160 can give the auxiliary equipment of amplifier integrated circuit (AMP IC)
(AUX INPUT) unit transmission warning output signal is inputted, so as to the sound that gives a warning.Here amplifier integrated circuit (AMP
IC) directly it is connected as sub- microprocessor 160 with Vehicular battery, power supply status has control (Real Time in real time
Control) characteristic, so still can be operated in the case where multimedia device 100 can not obtain sufficient working power.
If it is normally to supply working power to multimedia device 100 that result is confirmed in step S600, in step
S700 neutrons microprocessor 160 to reset for detection Wrong control central processing unit 120, it is re-executed start-up operation.
In step S800, sub- microprocessor 160 confirms the letter received from the central processing unit 120 restarted
Number, detect the position made a mistake.In step S800 detection make a mistake position method by with reference to figure 3 in content below
Illustrate.
When detecting the position made a mistake by step S800 operation, controlled in step S900 neutrons microprocessor 160
Display 130 processed, by the presentation of information for the correlation that makes a mistake in picture, there is provided to user.In addition, sub- microprocessor 160 may be used also
So that the information for the correlation that makes a mistake is stored in into other memory space (memory in addition).
Referring to Fig. 3 flow chart, the method that the position made a mistake is detected in step S800 is illustrated.
First, when central processing unit 120 re-executes start-up operation, step S810 neutrons microprocessor 160 confirm from
Whether central processing unit 120 receives the initial value that the system that represents opens (syson).According to the reception of the initial value whether, son
Microprocessor 160 can learn central processing unit 120 kernel whether normal operating.At this moment, sub- microprocessor 160 can be by with
The jtag port that central processor 120 connects receives initial value.
When step S810 confirmation result opens (syson) initial value not receive system from central processing unit 120,
Step S811 neutrons microprocessor 160 is judged as that the kernel of central processing unit 120 makes a mistake.
Step S810 confirmation result is when receiving system from central processing unit 120 to open (syson) initial value, in step
Rapid S820 neutrons microprocessor 160 is confirmed whether to receive kernel identification (ID) value from central processing unit 120.
When step S820 confirmation result identifies (ID) value to be not received by kernel, in step S821 neutron microprocessors
160 may determine that there occurs mistake for central processing unit 120 itself.
Step S820 confirmation result is when receiving kernel from central processing unit 120 to identify (ID) value, in step S830
Neutron microprocessor 160 confirms whether central processing unit 120 is downloaded software (operating system) and performed from memory 150 and starts behaviour
Make.Specifically, during the startup file for being stored in other memory space (memory in addition) is sent to by sub- microprocessor 160
Central processor 120.Central processing unit 120 can utilize the startup file received from sub- microprocessor 160, under memory 150
Software (operating system) is carried, to perform start-up operation.Sub- microprocessor 160 confirms whether central processing unit 120 downloads software simultaneously
Perform start-up operation.
Step S830 confirmation result be central processing unit 120 because can not normally download software, so that startup can not be performed
During operation, being judged as memory 150 in step S831 neutrons microprocessor 160, there occurs mistake.
Error occurrence location detection operation detection more than makes mistake (step S811, step S821 and step
, can be by display 130 by detected error relevant information in step S900 neutrons microprocessor 160 when S831)
It is shown in picture and is supplied to user.
As described above, when the central processing unit of multimedia device of the present invention makes a mistake in start-up operation, mistake is believed
Breath, which is shown in while picture is supplied to user, is stored in memory, so as to which user can directly confirm to occur in multimedia device
Error reason.When making a mistake, multimedia device need not be decomposed, confirms that its composition finds out problematic block one by one,
The error message of storage can be utilized directly to confirm problematic block.
The preferred embodiments of the present invention have been stressed above, and general technical staff of the technical field of the invention should manage
Solution can do various deformation implementation in the range of essential characteristics of the present invention are not departed from.Therefore, should understand from the angle of explanation public
The embodiment opened, rather than understand from the angle of restriction.It is above-mentioned explanation that the scope of the present invention, which is not, but claims
Institute's how, it is interpreted as being contained in the present invention with all differences point military camp in its equivalency range.
Claims (13)
- A kind of 1. multimedia device, it is characterised in that including：Central processing unit, it is performed the startup for the software that driving is stored in memory using startup file and grasped when being supplied to power supply Make, start completion signal is exported when completing the start-up operation；Display, its driving condition display picture according to the central processing unit to the software；AndSub- microprocessor, it performs electric power starting operation when being received externally interrupt signal in the case of sleep pattern, will be from Each component of the power supply supply multimedia device of vehicle input, transmits the startup file to the central processing unit so that holding The row start-up operation, is judged as making a mistake, and confirm when not receiving start completion signal from the central processing unit The position that the mistake occurs, control and to be shown on the wrong information with picture by the display,The sub- microprocessor is confirmed whether when occurring described wrong during the central processing unit performs start-up operation Power supply is being supplied to the central processing unit, when it is to supply power supply to the central processing unit to confirm result, described in reset Central processing unit to confirm the position that the mistake occurs after re-executing the start-up operation.
- 2. multimedia device according to claim 1, it is characterised in that：The sub- microprocessor does not receive during the central processing unit performs start-up operation from the central processing unit During to the initial value for representing system unlatching, it is judged as that the kernel in the central processing unit makes a mistake.
- 3. multimedia device according to claim 1, it is characterised in that：The sub- microprocessor does not receive during the central processing unit performs start-up operation from the central processing unit During to kernel discre value, it is judged as making a mistake in the central processing unit.
- 4. multimedia device according to claim 1, it is characterised in that：The sub- microprocessor is attempting drive connection in the memory of the central processing unit using the startup file During the software stored, if the software can not be driven, it is judged as making a mistake in the memory.
- 5. multimedia device according to claim 1, it is characterised in that：When the sub- microprocessor confirms the position that the mistake occurs, perform and communicated by internal integrated circuit by the mistake The relevant information of the position occurred by mistake is sent to the operation of the display and is saved in the operation of the memory at least One kind operation.
- 6. multimedia device according to claim 1, it is characterised in that：The sub- microprocessor makes a mistake in electric power starting operation, thus can not be supplied from the power supply of vehicle input To the multimedia device each component when, output warning tones notify user.
- A kind of 7. multimedia device, it is characterised in that including：Central processing unit, it is performed the startup for the software that driving is stored in memory using startup file and grasped when being supplied to power supply Make, and start completion signal is exported when completing the start-up operation；Display, it includes video encoder and liquid crystal display module, and according to the central processing unit to the software Driving condition, pass through the liquid crystal display module display picture；Rear camera, it is connected to the video encoder, for shooting the rear of vehicle；AndSub- microprocessor, it performs electric power starting operation when being received externally interrupt signal in the case of sleep pattern, will be from Each component of the power supply supply multimedia device of the vehicle input, transmit the startup file makes to the central processing unit The start-up operation must be performed, and the video encoder is independently directly controlled with the start-up operation,When the central processing unit does not complete the start-up operation within the time set in advance, the sub- microprocessor control institute The image that video encoder to show the rear camera shooting by the liquid crystal display module picture is stated,The sub- microprocessor the central processing unit perform start-up operation during make a mistake when be confirmed whether to The central processing unit supplies power supply, when it is to supply power supply to the central processing unit to confirm result, resets the center Processor to confirm the position that the mistake occurs after re-executing the start-up operation.
- 8. a kind of start the method for detecting mistake during multimedia device, it is to utilize multimedia device detection mistake on startup Method, it is characterised in that including：Be confirmed whether to be received externally interrupt signal in the case of sleep pattern the step of；Electric power starting operation is performed when confirming result to receive the interrupt signal, and the power supply inputted from vehicle is supplied into institute The step of stating each component of multimedia device；Judge whether from the step of receiving start completion signal using the central processing unit for supplying power supply execution start-up operation；Judged result is when not receiving the start completion signal, is judged as making a mistake and confirms what the mistake occurred The step of position；AndPicture shows the step of related information of the mistake and its generation positional information,Confirm it is described mistake occur position the step of, the central processing unit perform start-up operation during occur described in It is confirmed whether supplying power supply to the central processing unit during mistake, when confirmation result is to supply electricity to the central processing unit During source, the position that the mistake occurs is confirmed after resetting the central processing unit so that re-executing the start-up operation.
- 9. according to claim 8 start the method for detecting mistake during multimedia device, it is characterised in that confirms the mistake The step of position occurred by mistake, includes：When not receiving the initial value for representing system unlatching from the central processing unit, it is judged as in the central processing unit The step of core makes a mistake.
- 10. according to claim 8 start the method for detecting mistake during multimedia device, it is characterised in that described in confirmation The step of position that mistake occurs, includes：When not receiving kernel discre value from the central processing unit, it is judged as the step to be made a mistake in the central processing unit Suddenly.
- 11. according to claim 8 start the method for detecting mistake during multimedia device, it is characterised in that described in confirmation The step of position that mistake occurs, includes：When can not drive connection stored in the memory of the central processing unit software when, be judged as the memory send out Raw wrong step.
- 12. according to claim 8 start the method for detecting mistake during multimedia device, it is characterised in that described in confirmation The step of position that mistake occurs, includes：Be confirmed whether when not receiving the start completion signal to the central processing unit supply power supply the step of；When confirming result to supply power supply to the central processing unit, the central processing unit is resetted so that re-executing institute The step of stating start-up operation；AndConfirm during the central processing unit re-executes start-up operation it is described mistake occur position the step of.
- 13. according to claim 8 start the method for detecting mistake during multimedia device, it is characterised in that also includes：Show that the image that the rear camera of the vehicle is shot is supplied to picture when not receiving the start completion signal The step of user.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20130097205A KR20150019836A (en) | 2013-08-16 | 2013-08-16 | Multimedia device with error detection function while boot time and method thereof |
| KR10-2013-0097205 | 2013-08-16 |
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| Publication Number | Publication Date |
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| CN104375920A CN104375920A (en) | 2015-02-25 |
| CN104375920B true CN104375920B (en) | 2018-03-20 |
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| CN201410234953.4A Active CN104375920B (en) | 2013-08-16 | 2014-05-29 | There is the multimedia device and its operating method of error detection function during startup |
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| Country | Link |
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| KR (1) | KR20150019836A (en) |
| CN (1) | CN104375920B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11106259B2 (en) * | 2017-04-14 | 2021-08-31 | Shimadzu Corporation | Analytical device, controller, and analytical system incorporating a main power switch and power supply instruction part disposed separately from the main power switch |
| CN108377352A (en) * | 2018-02-06 | 2018-08-07 | 珠海全志科技股份有限公司 | Method for processing video frequency and device, computer installation and storage medium |
| KR102219387B1 (en) * | 2019-09-11 | 2021-02-23 | 엘에스일렉트릭(주) | Control method for error status of PLC system |
| CN111724722A (en) * | 2020-05-07 | 2020-09-29 | 安徽中科光电色选机械有限公司 | Display screen detection device for color sorter |
| CN113721990A (en) * | 2021-07-20 | 2021-11-30 | 北京比特大陆科技有限公司 | Data processing method, data processing apparatus, accelerator card, and storage medium |
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Also Published As
| Publication number | Publication date |
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| CN104375920A (en) | 2015-02-25 |
| KR20150019836A (en) | 2015-02-25 |
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