CN107527603A - Method for the validity of checking image data - Google Patents
Method for the validity of checking image data Download PDFInfo
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- CN107527603A CN107527603A CN201710474224.XA CN201710474224A CN107527603A CN 107527603 A CN107527603 A CN 107527603A CN 201710474224 A CN201710474224 A CN 201710474224A CN 107527603 A CN107527603 A CN 107527603A
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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
- H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/001—Arbitration of resources in a display system, e.g. control of access to frame buffer by video controller and/or main processor
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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
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- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The present invention relates to the method for the validity for checking image data.A kind of method of validity for checking image data, wherein described image data are from graphics processor（24）It is sent to data monitoring module（26）And wherein described image data are assigned to display device（32）Picture point.At least one view data of at least two picture points is replaced by predetermined test value respectively, for examining the validity of the view data, wherein before transmission, the test value be determined so that the first view data for the first picture point the first test value and for the second view data of the second picture point the second test value be selected as it is different.Only when the first test value and the second test value difference of second view data for being used for the second picture point of first view data for being used for the first picture point, just by the data monitoring module（26）The validity of transmitted view data is determined after a transfer.
Description
Technical field
The present invention relates to a kind of method of the validity for checking image data.
Background technology
It is a kind of as known in the B3 of DE 10 2,014 210 834 to be used to control display device, showing in particular for motor vehicle
The method of showing device, the display device include the display with multiple images element, and wherein these image components are except figure
Transported outside the minimum value and maximum of element luminous intensity using multiple medians of the luminous intensity of the function as controling parameter
OK.In at least a portion of display interfaces, image component is periodically run with the minimum value of its luminous intensity and maximum,
So that the distance between the minimum value and maximum of luminous intensity is repeatedly measured.It is pre- with first for measured distance value
Given frequency is less than the situation of predetermined minimum value, and display device restarts at least in part, and is given in advance second
In the case of being less than minimum value to fixed frequency, the display device is cut off.
The content of the invention
The present invention relates to a kind of method of the validity for checking image data, wherein view data is by graphics processor
It is sent to data monitoring module.These view data are assigned to the picture point of display device, wherein at least two picture point
At least one view data is replaced by predetermined test value respectively, for the validity of checking image data.Transmitting
Before, the test value is determined so that the first test value of the first view data for the first picture point and for the second figure
Second test value of the second view data of picture point is selected as different.Only when the first picture number for the first picture point
According to the first test value with the second test value difference for the second view data of the second picture point when, just by data monitoring mould
Block determines the validity of transmitted view data after a transfer.
Display device is especially construed as the display device of motor vehicle.Graphics processor（Also referred to as GPU）It can be managed
Solve to be configured for generating and transmitting the device of view data.Data monitoring module is especially construed as following electronics
Device（Such as field programmable gate array（Field Programmable Gate Array）Namely FPGA）, the electronics dress
Put and be configured for relevant validity to examine received data, especially view data.
One and multiple images data are especially construed as including one or more of the information for display image
Individual data, wherein view data especially include the image value of each pixel and/or each sub-pixel for display（Such as
Colour）.Pixel is particular it is understood that be display（Such as screen）Pictorial element, picture point, elementary area or surface element.
This, a pixel can especially be configured to reproduce one or more light for determining color, such as basic colors is red, green
And/or blue and/or tone of gray.One pixel can especially include one or more sub-pixels, wherein the sub-pixel can
To be configured to reproduce the light for determining color, such as basic colors is one in red, green or blue or tone of gray.
Inspection data is especially construed as being loaded with the validity, especially for examining the other data of at least a portion
For the data for the information for examining at least a portion view data.Inspection data can for example include and view data phase redundancy
Data.Inspection data can for example include being coordinated on used wrong identification algorithm for view data to be tested
Data.
Method for the validity of checking image data has the following advantages that：The mistake occurred when transmitting view data
It can be determined by used inspection data.In this manner it is ensured that：Correct information is shown over the display, and this is especially
It is significant under the information state of security-critical.Especially, it is to have the advantage that when this method uses in a motor vehicle
, because in the case of such display, to information（Such as alarm signal）Correct display be important.
Led to after a transfer can be realized instead of the view data determined by predetermined test value before being transmitted
Cross inspection of the data monitoring module to the view data of transmission.Here, used test value is chosen to the first inspection
Value and the second test value are different.Each first and/or each second or each n-th image point（Such as two continuous
Picture point）At least one view data be examined value replace.So, test value is preferably between two values for example with the time
Sequentially replace.If two continuous values are had any different each other, then can be determined the validity of view data and can be incited somebody to action
View data is correctly displayed on display.If the first test value and the second test value are not different, i.e., if the inspection
Value is tested for example with identical value, then not can determine that the validity of view data.
Through this, such as " the freezing " of display can be identified.When the task of renewal picture material falls in graphic computer
On, but when data but continue to be sent to display, identical data are sent to display all the time instead of new data.Knot
Fruit is display " freezing " therefore is still image.Method according to the present invention discloses this mistake.As a result, for example
Display can be notified, cuts off and/or restarted with generation error.
Before transmission, at least one view data of at least two picture points is replaced by predetermined test value, is used for
The validity of checking image data.Through this, it is ensured that：Although additionally transmitting inspection data, the number to be transmitted on the whole
According to stream in terms of its volume still without being enhanced.Especially when a part of view data it is only inessential or almost completely not
Influence image showing and therefore can save transmission to these data without negatively affecting image matter in the display
During amount, this is favourable.
In a favourable design of this method, picture point is the pixel of display device.View data therefore quilt
Distribute to the pixel of the picture point of display device, wherein described image point is especially included according to basic colors the picture that divides
Element.At least one view data of the pixel of difference at least two of at least one basic colors is before transmission by predetermined inspection
Test value replacement.Especially when the view data replaced by test value only have the small of display to image over the display or
During unessential influence and/or when the change of view data or image is only resulted in the visual impression by human viewer to image
In terms of knowing during inessential or small change, this is meaningful.
In another favourable design of this method, picture point is the sub-pixel of display device, wherein display device
Each pixel include at least one sub-pixel.In order to be added formula color contamination, the pixel is included preferably according to basic colors（Example
Such as red, green and blue）Come the sub-pixel divided.Therefore, following information is transmitted by view data：Different basic colors it is corresponding
Sub-pixel should be lighted with which kind of intensity.Intensity can for example be encoded as the sequence, such as value of zero or one or I=I of numerical value
The sequence of (0,1), its sub-pixel is for example including eight view data or position.Alternatively, for higher resolution ratio, also may be used
With each sub-pixel or pixel coder multiple images data or position.If the numerical value of view data changes, involved sub- picture
The luminous intensity of element and the color contamination of affiliated pixel change.
It is advantageously improved at one in scheme, at least one view data of at least two sub-pixels is by predetermined inspection
Value replaces, for examining validity.Especially when the view data replaced by test value only has to image over the display
Display small or unessential influence when and/or when the change of view data or image is only resulted in by human viewer
During to change inessential or small in terms of the visually-perceptible of image, this is meaningful.
Predetermined test value can especially fetch value, such as the first value zero or second value one.
In an advantageous embodiment, view data has place value（Bitwertigkeit）.Place value especially can be by
Be interpreted as the valuation to view data according to importance, view data for example on the display of display device by image
Data have the importance come the image shown.In addition, place value can also be the valuation to view data or position, i.e., it is each
View data or position are influenceed to the image in which kind of degree in terms of visually-perceptible of the image for human viewer
Display.In order to determine place value, such as following degree can be used：I.e. when the numerical value of each view data changes, image shows
The intensity shown changes for example for human viewer in which kind of degree., should if view data has small place value
Display of the change of view data to affiliated image or the influence to the human perception of the image are small or do not have shadow completely
Ring.Therefore, described image data can be examined data replacement, and human viewer does not notice this point.
In addition, because the change of the position of the minimum of picture point is invisible for human viewer or hardly may be used
See, so in general the picture point can be positioned over the display everywhere.
In an expansion scheme, the view data of picture point is replaced by predetermined test value, wherein the view data
With the place value under predetermined threshold value.Preferably, picture point view data be examined value replace, the view data with
Other view data of the picture point, which are compared, has minimum place value.So, the change of the view data is to affiliated image
Display or influence to the human perception of the image are small or do not influence completely.Least significant bit（least
significant bit）Or LBS can also be referred to as the position of minimum.
If pixel in order to be added formula color contamination and including preferably according to basic colors（Such as red, green and blue）Come what is divided
Sub-pixel, then the color depth of image of the change of view data to being shown by view data has an impact.If especially have
Small or with place value minimum compared with other view data of the picture point view data is examined data and replaced,
The influence of so this color depth to the image shown by described image data is small.
In an advantageous embodiment, when it is no determination view data validity when, generation error notice and/or
Interrupt.For example, when the validity of view data is not determined and/or when generation error notifies, for display image data
Display device can at least in part or entirely be cut off.It can ensure through this：Observer（Such as the driving of vehicle
Member）The image disruption that is not shown erroneously is mistakenly notified.In cut-out, such as can example over the display
Such as by unified tone（Especially black tone）Display cut off the luminous and/or interrupt images data of display device
Display.Error notification can also for example be understood to error flag.Instead of error notification and/or interruption, display can also be triggered
The reset of device.Therefore, display can for example be cut off and then be activated again.
Scheme is advantageously improved according to one, at least one view data of at least three picture points is respectively used to examine
The validity of view data, wherein only when the frequency of the identified validity of view data is on predetermined threshold value
When, just determine described image data validity.If the frequency of the identified validity of view data is less than predetermined
Threshold value, then preferably generate error notification and/or cut off display at least in part.It can ensure through this：Each picture point
All allow have display mistake, notify without generation error and/or do not cut off aobvious due to single vicious picture point
Show device.Therefore, according to the favourable embodiment, validity is examined using multiple images point.
Moreover, it relates to a kind of data monitoring module for display device.The display device has picture point,
Wherein view data is distributed to picture point.The data monitoring module is set up to determine the view data transmitted by graphics processor
Validity, at least one view data of wherein at least two picture point is replaced by predetermined test value respectively, for examining
Test the validity of view data.Before transmission, test value is determined so that the first view data for the first picture point
The first test value and for the second view data of the second picture point the second test value be selected as it is different.Only when with
Second inspection of the first test value in the first view data of the first picture point and the second view data for the second picture point
Test value it is different when, the data monitoring module just after a transfer determine view data validity.The data monitoring module is preferred
Ground is arranged in the data flow from graphics processor to display between graphics processor and display.
A kind of moreover, it relates to display device with data monitoring module.The data monitoring module is being shown
Be preferably arranged in device between the display of the graphics processor and display image data of establishing view data to display
In the data flow of device.Through this, view data can be sent to display by data monitoring module from graphics processor.It can replace
Ground is changed, in order to receive view data, may be present and be directly connected between graphics processor and display.Then, data monitoring mould
Block for example can be by single data wire and graphics processor, the memory of display or in graphics processor and display
Between connection connect.
Brief description of the drawings
Embodiments of the invention are shown and further illustrated in the description that follows in the accompanying drawings.For
Shown in each figure and play the key element of similar effect, using identical reference marker, wherein eliminating the repetition to the key element
Description.Wherein：
Fig. 1 shows the schematic diagram of the display device according to embodiments of the invention；
Fig. 2 shows the schematic diagram of the flow chart according to embodiments of the invention；
Fig. 3 shows the schematic diagram of the display device according to embodiments of the invention；
Fig. 4 shows the schematic diagram of two picture points according to embodiments of the invention；
Fig. 5 shows the schematic diagram of the multiple images point according to embodiments of the invention.
Embodiment
Fig. 1 shows exemplary display device 32, and the display device 32 is built upon in motor vehicle, such as automobile.
Combination instrument 21 has display device 32, control device 23 and the interface 20 to be communicated for the miscellaneous equipment with motor vehicle, and
And it can be disposed in the instrument board of vehicle.Control device 23 preferably includes the controller with memory, graphics process
Device and data monitoring module.Combination instrument 21 can be preferably embodied as display, be implemented as LCD display.
Fig. 2 shows the example of the flow chart 41 of the method for the validity for checking image data in a flowchart
The embodiment of property.View data be assigned to the picture point of the display 28 of display device 32 and for display information and from
Graphics processor 24 be sent to data monitoring module 26 and it is determined that in the case of the validity of view data and then by
It is sent to display 28.Each picture point is made up of at least one view data, wherein each view data has in picture point
There is a place value.The place value is the effect that the view data in picture point changes.In order in transmission view data
The validity of view data can be determined in data monitoring module 26 afterwards, before transmission, it is determined that view data it is pre-
Given test value replaces.
In first step 40, such as in graphics processor 24, the view data to be replaced by test value is identified.Example
The view data to be replaced is selected such as the standard according to place value.For the validity of checking image data, respectively using at least
At least one view data of two picture points.In this embodiment, the first figure is preferably identified in first step 40
The view data of the minimum of the view data of the minimum of picture point and the second picture point.
In second step 42, before view data is sent into data monitoring module 26 from graphics processor 24, institute
The view data identified is replaced by predetermined test value.The view data identified is existed by the replacement of test value
This has carried out when view data can be generated in graphics processor 24 or can generate image in graphics processor 24
Carried out after data.The test value is determined so that the first test value and use of the first view data for the first picture point
It is selected as in the second test value of the second view data of the second picture point different.Predetermined test value can for example take
First value of zero takes second value one.If for example, the first test value of the first view data for the first picture point
Value one, then for the second test value value zero of the second view data of the second picture point, or vice versa.
After second step 42, in third step 44, view data is passed together with test value from graphics processor 24
It is defeated to arrive data monitoring module 26.
In four steps 46, relevant correctness carrys out the view data of inspection institute's transmission in data monitoring module 26.Only
There are the first test value when the first view data that be used for the first picture point and second view data for the second picture point
During the second test value difference, the validity of transmitted view data is just determined by data monitoring module 26 after a transfer.
Therefore, in one embodiment, the first test value of the first picture point can be temporarily stored in memory, preferably
Ground is temporarily stored in data monitoring module 26 or is temporarily stored in controller 22.Once and then by the of the second picture point
Two test values are sent to data monitoring module 26, just by second test value compared with the first temporary test value.Such as
The test value of fruit first and second has different numerical value, then the validity of view data is determined in the 5th step 48, and
Therefore the first temporary test value can be deleted from memory.
If the first and second test values have different numerical value, then having for view data is determined in the 5th step 48
Effect property, and described image data can be sent to display 28 and be used for showing.And then, this method or the flow chart 41 can
To restart first step 40.If necessary may be significantly：Transmitted after validity is examined and in view data
The test value used in data monitoring module 26 is set to the value limited, such as zero or one to before display 28, with
Just avoid the influence to display quality, for example flash.
If test value is incorrect or the first test value and the second test value are for example with identical numerical value, then the 5th
There is no the validity for determining view data in step 48, and generation error notifies in the 6th last step 50.And then,
Such as the result as error notification, display 28 can be cut off at least in part.The partial cut of display 28 especially may be used
To be turned off display of the luminous and/or interrupt images data of display 28 in display 28, wherein for example with being filled by display
Put 32 view data received and unified tone, especially black tone are independently reproduced in display 28.In another reality
Apply in scheme, the transmission to view data can be made to be redirected on extension wire so that can continue to show on the display 28
At least information of security-critical.
Alternatively, it is possible at least one view data of at least three picture points is respectively used to checking image data
Validity, wherein only when the identified validity of view data is on predetermined threshold value, just determine picture number
According to validity., can also be only true in the institute of view data instead of cutting off display 28 at once when identifying error notification
The frequency of fixed validity is less than predetermined threshold value（For example, 30-60 there is the frequency of the test value of mistake in succession）
When just cut off display 28.For example, if view data did not changed or updated within half second to one second, thus the image is therefore
Freeze, then generation error notifies.Therefore, when image rate is 60Hz, at 30-60, there is the inspection of mistake in succession
Output error notifies in the case of value.
Fig. 3 shows the embodiment of display device 32.Display device 32 includes：Controller 22 with memory 30, institute
Controller 22 is stated to be connected with graphics processor 24；And the data monitoring module 26 being connected with graphics processor 24.Graphics process
Device 24 is connected by data monitoring module 26 with display 28.In addition, display device 32 also with for communicating with miscellaneous equipment
Interface 20 connects.
The method of the shown validity for checking image data can be in the display device according to Fig. 3 in fig. 2
Implement on 32.The data preferably established in graphics processor 24 send data monitoring module 25 to from graphics processor 24,
Wherein for the validity of checking image data, at least one view data of at least two picture points is before transmission preferably
Replaced respectively by predetermined test value in graphics processor 24.The test value is determined so that for the first image
Point the first view data the first test value and be chosen for the second test value of the second view data of the second picture point
To be different.Data monitoring module 26 is established as：When the first view data for the first picture point the first test value and
During the second test value difference for the second view data of the second picture point, the image transmitted by graphics processor 24 is just determined
The validity of data.Predetermined test value can be for example stored in the memory 30 in controller 22.It is in addition, replaceable
Ground, controller 22 can also be equally established as：Then the validity of view data transmitted by graphics processor 24 is determined.For
This, data monitoring module 26 is preferably directly connected to controller 22.
If the validity of view data is determined in data monitoring module 26, then data monitoring module 26 is set up
For the view data for display is transmitted into display 28.If do not have to determine view data in data monitoring module 26
Validity, then data monitoring module 26 is established as generation error notice.The result as caused by error notification is, for example, at least
It is partially cut off display 28.Alternatively, instead of error notification, the interruption to second computer can also be triggered, this second
Computer is then stored to mistake and restarts graphic computer（Reset（RESET））.
Fig. 4 shows the embodiment of the first picture point 60 and the second picture point 70, and wherein view data is respectively allocated
To the first picture point 60 and the second picture point 70.The first view data 61, the second view data are assigned with to the first picture point 60
62nd, the 3rd view data 63, the 4th view data 64, the 5th view data 65, the 6th view data 66, the 7th view data 67
With the 8th view data 68.The first view data 71, the second view data 72, the 3rd picture number are assigned with to the second picture point 70
According to the 73, the 4th view data 74, the 5th view data 75, the 6th view data 76, the 7th view data 77 and the 8th picture number
According to 78.In this embodiment, picture point 60,70 is made up of eight view data respectively, and eight view data can take
Value of zero or one.Alternatively, for higher resolution ratio, each picture point 60,70, which can also use, is more than eight picture numbers
According to, such as ten or 12 view data.Described image data are preferably included for the display 28 in display device 32
The information of middle display image and/or bell character.
View data includes affiliated picture point should carry out luminous information with which kind of intensity, wherein the intensity for example may be used
To be encoded as numerical value, such as value of zero or one or I=I (0,1) sequence.If present view data 61 to 68,71 to 78
Or numerical value changes, then this luminous intensity to involved picture point has an impact.The degree how intensity is tempestuously changed is outstanding
It depends on the position in picture point 60,70 of view data 61 to 68,71 to 78.Therefore, can give each view data 61 to
68th, 71 to 78 assign an image value, and described image value illustrates the effect that numerical value changes.If with small position
The view data of value changes, then this luminous intensity to affiliated picture point 60,70 only has small influence.In the reality
Apply in mode, last or the 8th view data 68 of the first picture point 60 and last or the 8th figure of the second picture point 70
As data 78 are the view data with minimum in corresponding picture point 60,70.It is last compared to the first picture point 60
Or the 8th view data 68 and last or the 8th view data 78 compared to the second picture point 70, the first picture point 60
The first seven view data 61 to 67 and the first seven view data 71 to 77 of the second picture point 70 there is higher place value, and
It is used for the information that transmission is used for display image on the display 28.
Now, in order to which whether checking image data are inerrably transferred to display 28, at least two from graphics processor 24
One view data of individual picture point, preferably with minimum place value view data respectively by predetermined test value come
Instead of because the degree how intensity of picture point tempestuously changes be kept as herein it is small.In the exemplary embodiment
In, before view data is transferred into data monitoring module 26 from graphics processor 24, the first picture point 60 it is last,
Eight or the view data 68 of minimum replaced by the first predetermined test value, and the second picture point 70 it is last,
8th or the view data 78 of minimum replaced by the second predetermined test value.The view data of minimum passes through inspection
The replacement of value has been carried out when this can generate view data in graphics processor 24 or the life in graphics processor 24
Carried out after into view data.Before transmission, the test value be determined so that for the first picture point 60 it is last,
Eight or minimum view data 68 the first test value and for the second picture point 70 it is last, the 8th or minimum figure
As the second test value of data 78 be selected as it is different.If the first test value access value one, then to the second test value point
With value of zero.The distribution is also possible in turn.
Only when the first picture point 60 the first test value and the second picture point 70 the second test value difference when, just passing
The validity of transmitted view data is determined after sending by data monitoring module 26.
Alternatively, it is also possible to the multiple images data within a picture point are passed through into different, predetermined inspection
Value is tested to replace.
According to a favourable design, other information can be embedded into the view data to be transmitted.For example,
The view data to be transmitted can additionally include the information of the display on safety-critical, such as position, size and/or such as
For the CRC of bell character or CRC other check values.In the case of CRC, it is determined that for counting
According to check value, for identifying the mistake in transmission, wherein in expansion scheme, the data that are transmitted or even can be repaiied
Just.In addition, the view data to be transmitted for example can be included additionally on the mark of software and/or the letter of image counter
Breath.In addition, the view data to be transmitted can also be for example included on that how should verify pixel used in amendment afterwards
To exclude the information of the influence to display quality.
Fig. 5 shows the schematic diagram of the multiple images point according to embodiments of the invention.These picture points are in the embodiment party
The sub-pixel of the display 28 of display device 32 is assigned in formula.One pixel is included according to basic colors（Red, green and blue）
Come the sub-pixel divided.The first pixel in this embodiment is included for the first red sub-pixel 80, for green
3rd sub-pixel 82 and the 5th sub-pixel 84 for blueness.Second pixel includes for the second red sub-pixel 81, used
In the 4th sub-pixel 83 of green and for the 6th blue sub-pixel 85.First and second pixels for example can be suitable with the time
Sequence is one after the other transmitted.Therefore view data 60 includes should be strong with which kind of with the sub-pixel distributed of corresponding basic colors
The luminous information of degree, wherein the intensity can for example be encoded as numerical value, such as value of zero or one or I=I (0,1) sequence
Row.If present view data or numerical value change, then therefore this luminous intensity to involved sub-pixel has an impact and
Have an impact to the color contamination of affiliated pixel.The degree how intensity tempestuously changes particularly depends on view data in sub-pixel
Position.Therefore, each view data 61 to 68,71 to 78 can be given to assign an image value, described image value illustrates to count
It is worth the effect changed.If the view data with low place value is changed, then this is only to affiliated pixel
Color contamination and luminous intensity have small influence.
Now, will at least in order to which whether checking image data are inerrably transferred to display 28 from graphics processor 24
At least one view data of two sub-pixels is replaced by predetermined test value respectively.In this embodiment, every
View data in individual sub-pixel is all replaced by a test value respectively.As in Fig. 4 above, preferably again will
The view data 68,78 of minimum is replaced by predetermined test value, because how the intensity of picture point tempestuously changes
Degree be kept as it is small.The view data of minimum can be generated by the replacement of test value at this in graphics processor 24
Carry out during view data or carried out in graphics processor 24 after generation view data.
Before transmission, the test value be especially determined so that for red the first sub-pixel 80 it is last,
8th or minimum view data 68 the first test value and for red the second sub-pixel 81 it is last, the 8th or most
Second test value of the view data 78 of low value is selected as different.In addition, for the last of the 3rd green sub-pixel 82
, the 8th or minimum view data 68 the 3rd test value and for green the 4th sub-pixel 83 it is last, the 8th
Or the 4th test value of the view data 78 of minimum be selected as it is different, and for blueness the 5th sub-pixel 84 most
Afterwards, the 8th or minimum view data 68 the 5th test value and for blueness the 6th sub-pixel 85 it is last, the
Eight or minimum view data 78 the 6th test value be selected as it is different.
In the exemplary design, for red first sub-pixel 80 it is last, the 8th or minimum
First test value access value one of view data 68, and be used for the second sub-pixel 81 of red it is last, the 8th or minimum
View data 78 the second test value access value zero.For green the 3rd sub-pixel 82 it is last, the 8th or minimum
View data 68 the 3rd test value access value zero, and be used for green the 4th sub-pixel 83 it is last, the 8th or minimum
4th test value access value one of the view data 78 of value, and for blueness the 5th sub-pixel 84 it is last, the 8th or
5th test value access value one of the view data 68 of minimum and be used for blueness the 6th sub-pixel 85 it is last, the 8th or
The 6th test value access value zero of the view data 78 of minimum.The distribution is also possible in turn.
Therefore, in the design method, respectively by the used test value of the sub-pixel of the first pixel and same color
The test value of sub-pixel of the second pixel be compared.The test value is preferably one after the other transmitted in time.Therefore
It can examine：Whether new view data is transmitted or whether image has been frozen, therefore can show rest image.
Only when the first test value of the first sub-pixel 80 and the second test value of the second red sub-pixel 81 of red
3rd test value of different and green the 3rd sub-pixel 82 is different with the 4th test value of the 4th sub-pixel 83 of green,
And when the 5th test value of the 5th sub-pixel 84 of blueness and different the 6th test value of the 6th blue sub-pixel 85, just by
Data monitoring module 26 determines the validity of transmitted view data after a transfer.
Alternatively, the multiple images data within a sub-pixel can also pass through different, predetermined inspection
Value replaces.
In another embodiment, such as also in Figure 5, picture point is assigned to the display 28 of display device 32
Sub-pixel.One pixel is included according to basic colors（Red, green and blue）Come the sub-pixel divided.In this embodiment
One pixel is included for the first red sub-pixel 80, the 3rd sub-pixel 82 for green and the 5th sub- picture for blueness
Element 84.Second pixel is included for the second red sub-pixel 81, the 4th sub-pixel 83 for green and for blueness
6th sub-pixel 85.View data with the sub-pixel distributed of corresponding basic colors with which kind of intensity therefore including that should be sent out
The information of light, wherein the intensity can for example be encoded as numerical value, such as value of zero or one or I=I (0,1) sequence.Such as
The present view data of fruit or numerical value change, then this luminous intensity to involved sub-pixel has an impact and therefore to affiliated
The color contamination of pixel have an impact.The degree how intensity is tempestuously changed is especially depending upon view data in sub-pixel
In position.Therefore, each view data 61 to 68,71 to 78 can be assigned an image value, and described image value illustrates number
It is worth the effect changed.If the view data with low place value is changed, then this color contamination to affiliated pixel
Only has small influence with luminous intensity.
Now, will at least in order to which whether checking image data are inerrably transferred to display 28 from graphics processor 24
At least one view data of two sub-pixels is replaced by predetermined test value respectively.As in Fig. 4 above,
Preferably again the view data 68,78 of minimum is replaced by predetermined test value because the intensity of picture point how
The degree tempestuously changed is kept as small.The view data of minimum herein can be in graphics process by the replacement of test value
Carry out when view data is generated in device 24 or carried out in graphics processor 24 after generation view data.
Before transmission, these test values are especially determined so that the last of the first sub-pixel 80 for red
, the 8th or minimum view data 68 the first test value and for red the second sub-pixel 81 it is last, the 8th
Or the second test value of the view data 78 of minimum be selected as it is different.All other view data, especially also include it
The view data of other sub-pixels of its basic colors is not replaced and without changing is transmitted.Exemplary set at this
In meter scheme, for red the first sub-pixel 80 it is last, the 8th or minimum view data 68 the first test value
Access value one, and be used for red the second sub-pixel 81 it is last, the 8th or minimum view data 78 second inspection
Value access value zero.The distribution is also possible in turn.Only when the first test value and red of the first red sub-pixel 80
The second sub-pixel 81 the second test value difference when, transmitted image is just determined by data monitoring module 26 after a transfer
The validity of data.
Therefore, in the design method, and respectively by the used test value of the sub-pixel of the first pixel and same face
Color（Here it is red）The test value of sub-pixel of the second pixel be compared.The test value is preferably successive in time
Ground is transmitted.Therefore can examine：Whether new view data is transmitted or whether image has been frozen, therefore meeting
Show rest image.
Alternatively, instead of the sub-pixel of red, green sub-pixel can be used.Before transmission, the test value
Especially be determined so that the 3rd sub-pixel 82 for green it is last, the 8th or minimum view data 68 the
Three test values and for green the 4th sub-pixel 83 it is last, the 8th or minimum view data 78 the 4th test value
It is selected as different.Only when the 3rd test value and the 4th of the 4th sub-pixel 83 of green of the 3rd green sub-pixel 82
During test value difference, the validity of transmitted view data is just determined after a transfer by data monitoring module 26.
Therefore, in the design method, and respectively by the used test value of the sub-pixel of the first pixel and same face
Color（Here it is green）The test value of sub-pixel of the second pixel be compared.The test value is preferably successive in time
Ground is transmitted.Therefore can examine：Whether new view data is transmitted or whether image has been frozen, therefore meeting
Show rest image.
Alternatively, instead of red or green sub-pixel, blue sub-pixel can be used.Before transmission, it is described
Test value be especially determined so that for blueness the 5th sub-pixel 84 it is last, the 8th or minimum view data
68 the 5th test value and for blueness the 6th sub-pixel 85 it is last, the 8th or minimum view data 78 the 6th
Test value is selected as different.Only when the 5th test value of the 5th sub-pixel 84 and the 6th sub-pixel 85 of blueness of blueness
The 6th test value difference when, just determine the validity of transmitted view data after a transfer by data monitoring module 26.
Therefore, in the design method, and respectively by the used test value of the sub-pixel of the first pixel and same face
Color（Here it is blueness）The test value of sub-pixel of the second pixel be compared.The test value is preferably successive in time
Ground is transmitted.Therefore can examine：Whether new view data is transmitted or whether image has been frozen, therefore meeting
Show rest image.
Alternatively, it is also possible to the multiple images data within a sub-pixel are passed through into different, predetermined inspection
Value is tested to replace.
Alternatively, instead of red green or blue sub-pixel, can also using the sub-pixel of two basic colors,
Such as red and green or red and blueness or the sub-pixel of green and blueness.Alternatively, instead of red green or blue
Sub-pixel, can also use whole basic colors sub-pixel, for the validity of checking image data.
Claims (11)
1. a kind of method of validity for checking image data, wherein, described image data are from graphics processor（24）Quilt
It is sent to data monitoring module（26）, wherein described image data are assigned to display device（32）Picture point, its feature exists
In,
At least one view data of at least two picture points is replaced by predetermined test value respectively, described for examining
The validity of view data,
Before transmission, the test value is determined so that the first test value of the first view data for the first picture point
Be selected as with the second test value of the second view data for the second picture point it is different, and
Only the first test value when first view data for being used for the first picture point and second picture point that is used for
During the second test value difference of the second view data, just by the data monitoring module（26）Determine what is transmitted after a transfer
The validity of view data.
2. according to the method for claim 1, it is characterised in that described image point is display device（32）Pixel.
3. according to the method for claim 1, it is characterised in that described image point is display device（32）Sub-pixel, its
Middle display device（32）Each pixel include at least one sub-pixel.
4. according to the method for claim 3, it is characterised in that the pixel is included according to basic colors the sub- picture that divides
Element, and at least one view data of at least two sub-pixels is allocated for examining validity.
5. the method according to one of preceding claims, it is characterised in that the predetermined test value takes the first value zero
Or second value one.
6. the method according to one of preceding claims, it is characterised in that having place value and being allocated for inspection has
At least one view data of effect property is assigned to following at least one view data of picture point, at least one picture number
According to the place value under predetermined threshold value.
7. according to the method for claim 6, it is characterised in that be used to verify that the view data of validity is assigned to figure
The following view data of picture point, other view data that described image data have described image point compare minimum place value.
8. the method according to one of preceding claims, it is characterised in that after validity is examined and/or by described in
View data sends display to（28）Before, in the data monitoring module（26）Middle set used test value arrives institute
The value of restriction.
9. the method according to one of preceding claims, it is characterised in that determine the effective of described image data when no
Property when, generation error notice and/or interrupt.
10. the method according to one of preceding claims, it is characterised in that determine the effective of described image data when no
During property, the display device for showing described image data is at least partially or fully cut off.
11. the method according to one of preceding claims, it is characterised in that at least one image of at least three picture points
Data are respectively used to the validity for examining the view data, wherein only when the validity being determined of described image data
Frequency when exceeding predetermined threshold value, just determine the validity of described image data.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016211177.9 | 2016-06-22 | ||
| DE102016211177.9A DE102016211177A1 (en) | 2016-06-22 | 2016-06-22 | Method for checking the validity of image data |
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| Publication Number | Publication Date |
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| CN107527603A true CN107527603A (en) | 2017-12-29 |
Family
ID=60579320
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710474224.XA Pending CN107527603A (en) | 2016-06-22 | 2017-06-21 | Method for the validity of checking image data |
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| Country | Link |
|---|---|
| CN (1) | CN107527603A (en) |
| DE (1) | DE102016211177A1 (en) |
| FR (1) | FR3053200A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889603A (en) * | 2019-03-19 | 2019-06-14 | 华东师范大学 | A kind of long distance monitoring method and system |
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| KR20000003979A (en) * | 1998-06-30 | 2000-01-25 | 김영환 | Image sensor |
| FR2908225A1 (en) * | 2006-11-02 | 2008-05-09 | Bernard Boisdequin | Sign displaying method for railway field, involves reading of binary code or stimulation and/or control point by control device to verify its coherence and image integrity, and activating defect signaling unit during incoherence |
| US20080297436A1 (en) * | 2007-05-29 | 2008-12-04 | Canon Kabushiki Kaisha | Head mounted display, display, and control method thereof |
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| CN105074811A (en) * | 2013-03-11 | 2015-11-18 | 瑞萨电子欧洲有限公司 | Video output checker |
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| US9589124B2 (en) * | 2014-05-29 | 2017-03-07 | Comcast Cable Communications, Llc | Steganographic access controls |
| DE102014210834B3 (en) | 2014-06-06 | 2015-09-03 | Robert Bosch Gmbh | Method for the control of a display device and display device for a particular motor vehicle |
| DE102015014190A1 (en) * | 2015-11-03 | 2016-05-25 | Daimler Ag | Method for securing a transmission of safety-related camera images |
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2016
- 2016-06-22 DE DE102016211177.9A patent/DE102016211177A1/en not_active Ceased
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- 2017-06-21 FR FR1755642A patent/FR3053200A1/en active Pending
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|---|---|---|---|---|
| KR20000003979A (en) * | 1998-06-30 | 2000-01-25 | 김영환 | Image sensor |
| FR2908225A1 (en) * | 2006-11-02 | 2008-05-09 | Bernard Boisdequin | Sign displaying method for railway field, involves reading of binary code or stimulation and/or control point by control device to verify its coherence and image integrity, and activating defect signaling unit during incoherence |
| US20080297436A1 (en) * | 2007-05-29 | 2008-12-04 | Canon Kabushiki Kaisha | Head mounted display, display, and control method thereof |
| JP2010021858A (en) * | 2008-07-11 | 2010-01-28 | Olympus Corp | Pixel defect correction device |
| CN105074811A (en) * | 2013-03-11 | 2015-11-18 | 瑞萨电子欧洲有限公司 | Video output checker |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109889603A (en) * | 2019-03-19 | 2019-06-14 | 华东师范大学 | A kind of long distance monitoring method and system |
| CN109889603B (en) * | 2019-03-19 | 2023-06-27 | 华东师范大学 | Remote monitoring method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3053200A1 (en) | 2017-12-29 |
| DE102016211177A1 (en) | 2017-12-28 |
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