CN106409196A - LED display control card fault detection method - Google Patents
LED display control card fault detection method Download PDFInfo
- Publication number
- CN106409196A CN106409196A CN201611025638.6A CN201611025638A CN106409196A CN 106409196 A CN106409196 A CN 106409196A CN 201611025638 A CN201611025638 A CN 201611025638A CN 106409196 A CN106409196 A CN 106409196A
- Authority
- CN
- China
- Prior art keywords
- led
- display control
- fault
- pure color
- control card
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
Abstract
The invention provides a LED display control card fault detection method. The method comprises the steps that the pure color full bright image and the black image of an LED lamp board in signal connection with an LED display control card to be detected are collected; the collected pure color full bright image and black image are analyzed to acquire the bright color degree value of each LED lamp point in the pure color full bright image and the black image, and a number of failure thresholds are set; and the LED lamp points are compared with a number of failure thresholds one by one to determine whether the LED display control card to be detected is failed, and the failure type is output in the event of the failure. According to the invention, by detecting the failure phenomenon of the LED lamp board in signal connection with the LED display control card to be detected, the failure detection of the LED display control card, such as a receiving card, is indirectly realized, and the failure type is output; and the failure detection efficiency of the LED display control card is improved.
Description
Technical field
The present invention relates to LED display manufacturing technology field, more particularly, to a kind of LED display control card fault detection method.
Background technology
Since 21 century, colored display industry is developed on an unprecedented scale, and LED display has also spread all over the center in most of city
Square, commercial mansion.LED display with its distinctive bright in luster, visual high, low in energy consumption the advantages of enjoy people's favorable comment.
However, display screen is also to there is fault, it is all to whether there is fault by manually to differentiate screen body in the past；So efficiency low and
Cannot automatization it is impossible to adapt to modern industry requirement.In general, the LED display control card of LED front edge of board for example receives
Card haves such problems as fault LED lamp panel to be led to occur that blank screen, shape be not variegated to, background to, color, splashette.
Content of the invention
Therefore, present invention is primarily targeted at providing a kind of LED display control card fault detection method, to detect LED
Display control card such as receiving card whether there is the fault type of fault and presence.
Specifically, a kind of LED display control card fault detection method that the embodiment of the present invention proposes, including step：I () adopts
Collect the pure color all light image of LED lamp panel being connected with LED display control card signal to be detected and black image；(ii) to collection
The pure color all light image obtaining and black image are analyzed obtaining in described pure color all light image and described black image each
The light tone angle value of LED point simultaneously sets multiple fault thresholds；And (iii) to each LED point pointwise described with the plurality of
Fault threshold be compared with judge described LED display control card to be detected whether there is fault and when there is fault defeated
Be out of order type.
In one embodiment of the invention, abovementioned steps (ii) include：Using each LED point in described black image
Luminance mean value set blank screen threshold value for judging whether black screen trouble, using in described pure color all light image each
The luminance mean value of LED point set for judge whether shape not to the shape of fault not to threshold value, and using described
In solid-color image the chromaticity coordinates mean set of each LED point be used for judging whether color not to the color of fault not to threshold
Value.
In one embodiment of the invention, abovementioned steps (iii) include：Pointwise judges each in described pure color all light image
Whether the brightness value of individual LED point is less than described blank screen threshold value and when brightness value is less than the LED point quantity of described blank screen threshold value
Reach and during predetermined number, judge that described LED display control card to be detected has black screen trouble；Pointwise judges described pure color all light figure
In picture, whether the brightness value of each LED point not to threshold value and works as brightness value less than described shape not to threshold value less than described shape
When judge that described LED display control card to be detected has shape not to fault；Pointwise judge described pure color all light image in each
Whether the chromaticity coordinates of LED point not to threshold range and works as chromaticity coordinates beyond described color not to threshold range beyond described color
When judge that described LED display control card to be detected has color not to fault.
In one embodiment of the invention, aforementioned LED display control card fault detection method also includes step：Collection institute
State the pure color lines image of LED lamp panel；Described pure color lines image is analyzed obtain in described pure color lines image with each
The light tone angle value of LED point simultaneously sets according to the luminance mean value of each LED point and is used for judging whether the variegated fault of background
The variegated threshold value of background；Each LED point pointwise described is determined whether by the LED that should light point and will not light
The brightness value of LED point variegated threshold value is compared to judge that described LED display control card to be detected is with described background
No have the variegated fault of background.
In one embodiment of the invention, aforementioned LED display control card fault detection method also includes step：Certain
Repeat the first pure color all light image of same color and the second pure color all light figure that shooting, collecting obtains described LED lamp panel in time
Picture；Described first pure color all light image and described second pure color all light image are analyzed obtaining described first pure color all light figure
The light tone angle value of each LED point in picture and described second pure color all light image；Pointwise is by described first pure color all light image
The brightness value of each LED point is described divided by obtaining with the brightness value of each LED point in described second pure color all light image
The brightness ratio value of each LED point, judge described brightness ratio value whether beyond the splashette threshold range setting and if
Then judge that described LED display control card to be detected has splashette fault beyond described splashette threshold range.
In one embodiment of the invention, aforementioned LED display control card fault detection method also includes step：Output institute
State fault type corresponding LED display control card failure cause.
In one embodiment of the invention, aforementioned LED display control card to be detected is receiving card, and described receiving card
One or more described LED lamp panel are connected by winding displacement.
Additionally, a kind of LED display control card fault detection method that yet another embodiment of the invention proposes, including step：Adopt
Collect the pure color lines image of the LED lamp panel being connected with LED display control card signal to be detected；Described pure color lines image is entered
Row analysis obtains the light tone angle value of each LED point the luminance mean value according to each LED point in described pure color lines image
Set fault threshold；And each LED point pointwise described is determined whether with the LED point that should light will not point
The bright brightness value of LED point and described fault threshold are compared whether to judge described LED display control card to be detected
There is fault and export fault type when there is fault.
In addition, a kind of LED display control card fault detection method that further embodiment of this invention proposes, including step：?
Repeat the first pure color all light image of same color and the second pure color all light that shooting, collecting obtains described LED lamp panel in certain time
Image；Described first pure color all light image and described second pure color all light image are analyzed obtaining described first pure color all light
The light tone angle value of each LED point in image and described second pure color all light image；Pointwise is by described first pure color all light image
In each LED point brightness value and each LED point in described second pure color all light image brightness value divided by obtaining
State the brightness ratio value of each LED point and judge whether described brightness ratio value exceeds the threshold range setting to determine
State LED display control card to be detected to whether there is fault and export fault type when there is fault.
Therefore, the event that the present invention can be occurred by the LED lamp panel that detection is connected with LED display control card signal to be detected
Barrier phenomenon indirectly to be realized the fault detect of LED display control card such as receiving card and to export fault type, such that it is able to be lifted
LED display control card fault detection efficiency.
By the detailed description below with reference to accompanying drawing, the other side of the present invention and feature become obvious.But should know
Road, this accompanying drawing is only the purpose design explained, not as the restriction of the scope of the present invention.It should also be noted that it is unless another
Point out that outward they only try hard to structure described herein and flow process are conceptually described it is not necessary to scale accompanying drawing.
Brief description
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
A kind of flow chart of LED display control card fault detection method that Fig. 1 proposes for the embodiment of the present invention.
Specific embodiment
Understandable for enabling the above objects, features and advantages of the present invention to become apparent from, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.
Specifically, a kind of LED display control card fault detection method that the present embodiment proposes mainly passes through detection because of LED
The phenomenon of the failure in LED lamp panel caused by display control card failure carrys out indirect detection LED display control card failure.Typically,
During this detection method, LED display control card to be detected can connect to trouble-free one or more LED itself
Plate；LED display control card herein is, for example, receiving card, and it connects one or more LED lamp panel typically by winding displacement；And
LED lamp panel for example includes circuit board, arranges LED lattice array on circuit boards and arrange on circuit boards and electrically connect institute
State row decoding circuit and the column drive circuit of LED lattice array；And for RGB all-colour LED lamp plate, single led lamp point leads to
Often include red, green and blue LED die.
In general, for example received the phenomenon of the failure in the LED lamp panel caused by card failure by front end LED display control card
Have：Blank screen, shape be not variegated to, background to, color, splashette；Phenomenon of the failure is described as follows：
1st, blank screen refers to that LED display control card sends to LED lamp panel and lights signal but LED lamp panel is not lighted；
2nd, shape is not to referring in LED lamp panel that certain LED point is excessively dark or does not light；
3rd, color is not to whole LED lamp panel when referring to control LED lamp panel to light or the LED in LED lamp panel some regions
The color display mistake of point；
4th, background is variegated refers to controlling LED lamp panel to show that the LED point that should not light during oblique line image is but lit
?；And
5th, splashette refers to that the LED that LED lamp panel is lighted in rear some regions is lighted and secretly coruscates.
For ease of understanding the present invention, below in conjunction with Fig. 1 to the LED display control card fault detection method of the present embodiment
Step is described in detail：
First, the image of the LED lamp panel that collection is connected with LED display control card signal to be detected, concretely：
A, collection solid-color image, the fault that it can be detected have blank screen, shape not to and color not right；Complete with RGB
For color LED lamp panel, the solid-color image being gathered for example includes gathering redness, green, the pure color all light figure such as blueness, white image
The pure color dark image entirely such as picture and black image (namely image when controlling whole LED lamp panel not light), wherein red, green,
Blue is primary colours all light image；
The for example white oblique line image of b, collection pure color lines image, the fault that it can be detected has blank screen, shape not
To, color not to and background variegated；And
Repeat shooting, collecting two with color pure color all light image, the fault that it can be detected is in c, certain time
Splashette；The time interval wherein repeating to shoot can rule of thumb set, can clap in the case of there is the flicker of LED point
Take the photograph the bright dark degree of difference during the flicker of LED point.
Secondly, analyze and process the LED lamp panel image collecting and obtain respective fault threshold for the event of LED display control card
Barrier detection, it is concretely：The LED lamp panel image collecting is analyzed with process, and (such as lamp point location etc., it is existing one-tenth
Cooking technique, therefore be not described in detail here) light chroma data to obtain the LED in each solid-color image, then with black image
In 4 times of luminance mean value of each LED point as blank screen threshold value, equal with the brightness of each LED point in pure color all light image
, as shape not to threshold value, using in pure color lines image, 0.5 times of the luminance mean value of each LED point is as the back of the body for 0.7 times of value
The variegated threshold value of scape, 0.8 times and 1.2 times of the chromaticity coordinates average of each LED point using in pure color all light image not right as color
Threshold value, using the 0.9 and 1.1 splashette threshold values detecting as splashette；Herein it should be noted that each fault threshold (blank screen threshold value,
Shape not to threshold value, the variegated threshold value of background, color not to threshold value, splashette threshold value) multiple value can be according to practical application situation
It is appropriately configured, be not limited with citing herein.
Then, fault detect is carried out to export testing result according to the fault threshold setting, concrete detection method can be：
Determine whether the LED point that light by lamp point, if it is judged that for "Yes" then carry out further blank screen,
Shape not to and the not reciprocity fault detect of color, if instead judged result for "No" then carry out further background variegated fault inspection
Survey.Wherein：
1st, with regard to the detection of black screen trouble：If the brightness value of predetermined number such as 90%LED lamp point is less than in LED lamp panel
Blank screen threshold value is then it is assumed that it is black screen trouble；
2nd, with regard to the shape not detection to fault：If the brightness value of certain LED point is less than shape not to threshold value, recognize
It is shape not to fault for it；
3rd, with regard to the color not detection to fault：If the chromaticity coordinates of certain LED point color not to threshold range it
(namely beyond color not to threshold range) is then it is assumed that it is color not to fault outward；
4th, with regard to the detection of the variegated fault of background：If it is variegated that the brightness value of the LED point that should not light is more than background
Threshold value is then it is assumed that it is the variegated fault of background.
Additionally, being detected as with regard to splashette fault：To repeat to shoot two obtaining with each in color pure color all light image
The brightness value pointwise of individual LED point is divided by with brightness ratio value (namely each the LED point being calculated each LED point
At two with the brightness value ratio in color pure color all light image), if this ratio value outside splashette threshold range then it is assumed that
It is splashette fault.
In addition, after testing result is obtained by aforementioned detection method, can also deduce via testing result further
The LED display control card failure cause causing LED lamp panel phenomenon of the failure is as output：1), black screen trouble is it may be possible to receiving card is joined
Number is not right；2), shape not to fault it may be possible to the signal of interface corresponding color LED is broken；3), color not to fault it may be possible to
The problems such as rosin joint, short circuit；4), the variegated fault of background is it may be possible to control line breaks down；And 5), splashette fault is it may be possible to interior
Deposit and break down.
Last it is worth mentioning at this point that, in the aforementioned embodiment it is also possible to using the pure color all light image of collection and black figure
As come to detect blank screen, shape not to and color not to fault, the pure color lines image using collection only detects the variegated fault of background,
And detect splashette fault using the same color pure color all light image repeating shooting, collecting in certain time.In addition, it is necessary to say
Bright, the name of aforementioned each fault type (blank screen, shape be not variegated to, background to, color, splashette) is only for ease of phase
Mutually distinguish, be not used for limiting the present invention.
The above, be only presently preferred embodiments of the present invention, not the present invention is made with any pro forma restriction, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any is familiar with this professional technology people
Member, in the range of without departing from technical solution of the present invention, when the technology contents of available the disclosure above make a little change or modification
For the Equivalent embodiments of equivalent variations, as long as being without departing from technical solution of the present invention content, according to the technical spirit pair of the present invention
Any simple modification, equivalent variations and modification that above example is made, all still fall within the range of technical solution of the present invention.
Claims (9)
1. a kind of LED display control card fault detection method is it is characterised in that include step：
I the pure color all light image of LED lamp panel and black image that () collection is connected with LED display control card signal to be detected；
(ii) the pure color all light image collecting and black image are analyzed obtaining with described pure color all light image and described
The light tone angle value of each LED point set multiple fault thresholds in black image；And
(iii) each LED point pointwise described and the plurality of fault threshold are compared to judge described LED to be detected
Display control card whether there is fault and exports fault type when there is fault.
2. LED display control card fault detection method as claimed in claim 1 is it is characterised in that step (ii) includes：Using
In described black image, the luminance mean value of each LED point sets the blank screen threshold value for judging whether black screen trouble, profit
Set the shape for judging whether shape not to fault with the luminance mean value of each LED point in described pure color all light image
Shape is not to threshold value, and utilizes the chromaticity coordinates mean set of each LED point in described solid-color image to be used for judging whether
Color not to the color of fault not to threshold value.
3. LED display control card fault detection method as claimed in claim 2 is it is characterised in that step (iii) includes：
Pointwise judges whether the brightness value of each LED point in described pure color all light image is less than described blank screen threshold value and works as brightness
Value reaches less than the LED point quantity of described blank screen threshold value and judges during predetermined number that described LED display control card to be detected exists
Black screen trouble；
Pointwise judges whether the brightness value of each LED point in described pure color all light image and works as not to threshold value less than described shape
Brightness value judges that described LED display control card to be detected has shape not to fault when being less than described shape not to threshold value；
Pointwise judges whether the chromaticity coordinates of each LED point in described pure color all light image exceeds described color not to threshold range
And judge that when chromaticity coordinates exceeds described color not to threshold range described LED display control card to be detected has color not to event
Barrier.
4. LED display control card fault detection method as claimed in claim 1 is it is characterised in that also include step：
Gather the pure color lines image of described LED lamp panel；
Described pure color lines image is analyzed obtain the light tone angle value of each LED point root in described pure color lines image
Set the variegated threshold value of background for judging whether the variegated fault of background according to the luminance mean value of each LED point；
Each LED point pointwise described is determined whether with the LED that should light point and by the LED that should not light point
Brightness value with described background variegated threshold value be compared with judge described LED display control card to be detected whether there is background miscellaneous
Color fault.
5. LED display control card fault detection method as claimed in claim 1 is it is characterised in that also include step：
Repeat shooting, collecting within a certain period of time and obtain the first pure color all light image of same color of described LED lamp panel and second pure
Color all light image；
Described first pure color all light image and described second pure color all light image are analyzed obtaining described first pure color all light
The light tone angle value of each LED point in image and described second pure color all light image；
Pointwise is each with described second pure color all light image by the brightness value of each LED point in described first pure color all light image
The brightness value of individual LED point is divided by obtaining the brightness ratio value of each LED point described, whether judge described brightness ratio value
Beyond the splashette threshold range setting and if exceeding described splashette threshold range, judge described LED display control to be detected
There is splashette fault in fabrication.
6. LED display control card fault detection method as claimed in claim 1 is it is characterised in that also include step：Output institute
State fault type corresponding LED display control card failure cause.
7. the LED display control card fault detection method as described in claim 1 to 6 any one is it is characterised in that described treat
The LED display control card of detection is receiving card, and described receiving card connects one or more described LED lamp panel by winding displacement.
8. a kind of LED display control card fault detection method is it is characterised in that include step：
Gather the pure color lines image of the LED lamp panel being connected with LED display control card signal to be detected；
Described pure color lines image is analyzed obtain the light tone angle value of each LED point root in described pure color lines image
Luminance mean value according to each LED point sets fault threshold；And each LED point pointwise described is determined whether should point
Bright LED point simultaneously the brightness value of the LED that should not light point and described fault threshold is compared to treat described in judging
The LED display control card of detection whether there is fault and exports fault type when there is fault.
9. a kind of LED display control card fault detection method is it is characterised in that include step：
Repeat shooting, collecting within a certain period of time and obtain the first pure color all light image of same color of described LED lamp panel and second pure
Color all light image；
Described first pure color all light image and described second pure color all light image are analyzed obtaining described first pure color all light
The light tone angle value of each LED point in image and described second pure color all light image；
Pointwise is each with described second pure color all light image by the brightness value of each LED point in described first pure color all light image
The brightness value of individual LED point divided by the brightness ratio value obtaining each LED point described and judges that described brightness ratio value is
The no threshold range beyond setting whether there is fault and when there is fault to determine described LED display control card to be detected
Output fault type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611025638.6A CN106409196B (en) | 2016-11-21 | 2016-11-21 | LED display control card fault detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611025638.6A CN106409196B (en) | 2016-11-21 | 2016-11-21 | LED display control card fault detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106409196A true CN106409196A (en) | 2017-02-15 |
| CN106409196B CN106409196B (en) | 2020-05-15 |
Family
ID=58069037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611025638.6A Active CN106409196B (en) | 2016-11-21 | 2016-11-21 | LED display control card fault detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106409196B (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107103867A (en) * | 2017-04-19 | 2017-08-29 | 西安诺瓦电子科技有限公司 | Display control card detection method and device, detecting system and production line |
| CN108228402A (en) * | 2017-12-29 | 2018-06-29 | 努比亚技术有限公司 | A kind of display effect appraisal procedure, terminal and computer readable storage medium |
| CN110046592A (en) * | 2019-04-22 | 2019-07-23 | 北京志远鸿通科技有限公司 | A kind of traffic guidance screen monitoring method |
| CN111406279A (en) * | 2017-12-01 | 2020-07-10 | 三菱电机株式会社 | Display unit, display device, and display method |
| CN111712869A (en) * | 2018-09-25 | 2020-09-25 | 西安诺瓦星云科技股份有限公司 | Display device fault detection method, device, system and computer readable medium |
| CN111912349A (en) * | 2019-05-07 | 2020-11-10 | 杭州海康威视数字技术股份有限公司 | Detection method and system for display substrate |
| CN112396999A (en) * | 2019-08-16 | 2021-02-23 | 西安诺瓦星云科技股份有限公司 | Abnormal display block detection method, display screen fault detection method and equipment thereof |
| CN112415296A (en) * | 2019-08-23 | 2021-02-26 | 西安诺瓦星云科技股份有限公司 | Test apparatus and test system |
| CN112614451A (en) * | 2020-05-28 | 2021-04-06 | 西安诺瓦星云科技股份有限公司 | Display module detection method, device and system |
| CN112685266A (en) * | 2020-11-30 | 2021-04-20 | 浙江大华技术股份有限公司 | Fault detection method, device, system, equipment and medium |
| CN113012607A (en) * | 2019-12-19 | 2021-06-22 | 西安诺瓦星云科技股份有限公司 | Display module detection method, device and system |
| CN113012608A (en) * | 2019-12-19 | 2021-06-22 | 西安诺瓦星云科技股份有限公司 | Display module detection method, device and system |
| CN114093328A (en) * | 2021-11-23 | 2022-02-25 | 中国航空工业集团公司洛阳电光设备研究所 | System and method for relieving display brightness attenuation of LCD (liquid crystal display) |
| CN117218983A (en) * | 2023-09-22 | 2023-12-12 | 信丰云创(深圳)信息有限公司 | Display screen inspection system and method |
| CN117351857A (en) * | 2023-10-23 | 2024-01-05 | 广州隧华智慧交通科技有限公司 | LED screen general control detecting system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100910593B1 (en) * | 2008-12-12 | 2009-08-03 | (주)동방데이타테크놀러지 | Faulty pixel detecting method and faulty pixel detecting system for led electric sign board |
| CN104637425A (en) * | 2015-02-06 | 2015-05-20 | 西安诺瓦电子科技有限公司 | Assembly-line LED (light emitting diode) display unit uniformity detection method, system and device |
| CN104749184A (en) * | 2013-12-31 | 2015-07-01 | 研祥智能科技股份有限公司 | Automatic optical detection method and automatic optical detection system |
| CN105845062A (en) * | 2016-03-31 | 2016-08-10 | 京东方科技集团股份有限公司 | Method and system of detecting display panels, and batch detection method of display panels |
| CN205487272U (en) * | 2016-01-29 | 2016-08-17 | 厦门市朗星节能照明股份有限公司 | Display screen fault handling system |
| CN105893197A (en) * | 2016-04-26 | 2016-08-24 | 广东威创视讯科技股份有限公司 | Fault monitoring method and device of LED screen body and transmitter |
-
2016
- 2016-11-21 CN CN201611025638.6A patent/CN106409196B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100910593B1 (en) * | 2008-12-12 | 2009-08-03 | (주)동방데이타테크놀러지 | Faulty pixel detecting method and faulty pixel detecting system for led electric sign board |
| CN104749184A (en) * | 2013-12-31 | 2015-07-01 | 研祥智能科技股份有限公司 | Automatic optical detection method and automatic optical detection system |
| CN104637425A (en) * | 2015-02-06 | 2015-05-20 | 西安诺瓦电子科技有限公司 | Assembly-line LED (light emitting diode) display unit uniformity detection method, system and device |
| CN205487272U (en) * | 2016-01-29 | 2016-08-17 | 厦门市朗星节能照明股份有限公司 | Display screen fault handling system |
| CN105845062A (en) * | 2016-03-31 | 2016-08-10 | 京东方科技集团股份有限公司 | Method and system of detecting display panels, and batch detection method of display panels |
| CN105893197A (en) * | 2016-04-26 | 2016-08-24 | 广东威创视讯科技股份有限公司 | Fault monitoring method and device of LED screen body and transmitter |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107103867A (en) * | 2017-04-19 | 2017-08-29 | 西安诺瓦电子科技有限公司 | Display control card detection method and device, detecting system and production line |
| CN111406279A (en) * | 2017-12-01 | 2020-07-10 | 三菱电机株式会社 | Display unit, display device, and display method |
| CN108228402A (en) * | 2017-12-29 | 2018-06-29 | 努比亚技术有限公司 | A kind of display effect appraisal procedure, terminal and computer readable storage medium |
| CN108228402B (en) * | 2017-12-29 | 2021-11-19 | 努比亚技术有限公司 | Display effect evaluation method, terminal and computer readable storage medium |
| CN111712869A (en) * | 2018-09-25 | 2020-09-25 | 西安诺瓦星云科技股份有限公司 | Display device fault detection method, device, system and computer readable medium |
| CN110046592B (en) * | 2019-04-22 | 2021-03-12 | 北京志远鸿通科技有限公司 | Traffic guidance screen monitoring method |
| CN110046592A (en) * | 2019-04-22 | 2019-07-23 | 北京志远鸿通科技有限公司 | A kind of traffic guidance screen monitoring method |
| CN111912349A (en) * | 2019-05-07 | 2020-11-10 | 杭州海康威视数字技术股份有限公司 | Detection method and system for display substrate |
| CN111912349B (en) * | 2019-05-07 | 2022-08-05 | 杭州海康威视数字技术股份有限公司 | Detection method and system for display substrate |
| CN112396999A (en) * | 2019-08-16 | 2021-02-23 | 西安诺瓦星云科技股份有限公司 | Abnormal display block detection method, display screen fault detection method and equipment thereof |
| CN112396999B (en) * | 2019-08-16 | 2023-09-08 | 西安诺瓦星云科技股份有限公司 | Abnormal display block detection method, display screen fault detection method and equipment thereof |
| CN112415296A (en) * | 2019-08-23 | 2021-02-26 | 西安诺瓦星云科技股份有限公司 | Test apparatus and test system |
| CN113012608A (en) * | 2019-12-19 | 2021-06-22 | 西安诺瓦星云科技股份有限公司 | Display module detection method, device and system |
| CN113012607A (en) * | 2019-12-19 | 2021-06-22 | 西安诺瓦星云科技股份有限公司 | Display module detection method, device and system |
| CN112614451A (en) * | 2020-05-28 | 2021-04-06 | 西安诺瓦星云科技股份有限公司 | Display module detection method, device and system |
| CN112685266A (en) * | 2020-11-30 | 2021-04-20 | 浙江大华技术股份有限公司 | Fault detection method, device, system, equipment and medium |
| CN114093328A (en) * | 2021-11-23 | 2022-02-25 | 中国航空工业集团公司洛阳电光设备研究所 | System and method for relieving display brightness attenuation of LCD (liquid crystal display) |
| CN117218983A (en) * | 2023-09-22 | 2023-12-12 | 信丰云创(深圳)信息有限公司 | Display screen inspection system and method |
| CN117351857A (en) * | 2023-10-23 | 2024-01-05 | 广州隧华智慧交通科技有限公司 | LED screen general control detecting system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106409196B (en) | 2020-05-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106409196A (en) | LED display control card fault detection method | |
| CN106409197A (en) | LED lamp board fault detection method | |
| CN106127778B (en) | It is a kind of for projecting the line detection method of interactive system | |
| CN104897367A (en) | Indicating light optical state automatic test method and system | |
| US20030044042A1 (en) | Method and apparatus of detecting fire by flame imaging | |
| CN111654692B (en) | Camera detection method and device, camera and storage medium | |
| CN112395928A (en) | Method for automatically detecting equipment state operation | |
| CN109300110A (en) | A kind of forest fire image detecting method based on improvement color model | |
| CN104658014A (en) | Method for detecting in-vivo chromaticity abnormality | |
| WO2015087163A2 (en) | Flame detection system and method | |
| CN105974616A (en) | Method and system for detecting defect of LCD screen | |
| TWI390194B (en) | Device and method for testing leds on a motherboard | |
| CN106404417A (en) | Non-contact type automobile instrument panel test system and method | |
| WO2017096984A1 (en) | Card error display method and system | |
| CN103841295B (en) | Image processing apparatus | |
| CN102063758B (en) | Banknote paper texture detection method and device | |
| WO2018227795A1 (en) | Test system for indicator light control drive circuit | |
| CN104637425A (en) | Assembly-line LED (light emitting diode) display unit uniformity detection method, system and device | |
| CN103324957A (en) | Identification method and identification device of state of signal lamps | |
| CN105744261B (en) | The test system and method for testing of set top box front panel | |
| CN111739251A (en) | Fire source detection and positioning system and method | |
| WO2008032553A1 (en) | Method for inspecting mounting status of electronic component | |
| CN201440274U (en) | Target detection equipment and image acquisition device used by same | |
| CN101609580A (en) | Method for intelligently protecting bank self-service equipment | |
| KR102286470B1 (en) | LED Digital Signage Defect Detection system through Similarity Analysis of Original Image Information and Displayed Image Information |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 710075 DEF101, Zengyi Square, Xi'an Software Park, No. 72 Zhangbajie Science and Technology Second Road, Xi'an High-tech Zone, Shaanxi Province Applicant after: XI'AN NOVASTAR TECH Co.,Ltd. Address before: High tech Zone technology two road 710075 Shaanxi city of Xi'an Province, No. 68 Xi'an Software Park D District 401 Applicant before: Xi'an NovaStar Tech Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |