CN103606348A - Fault detection device and method for displayer of video player - Google Patents
Fault detection device and method for displayer of video player Download PDFInfo
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- CN103606348A CN103606348A CN201310392428.0A CN201310392428A CN103606348A CN 103606348 A CN103606348 A CN 103606348A CN 201310392428 A CN201310392428 A CN 201310392428A CN 103606348 A CN103606348 A CN 103606348A
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Abstract
The invention relates to a fault detection device for a displayer of a video player. The fault detection device comprises an optical sensing device and a detection module. The optical sensing device is used for acquiring optical signals of a present display frame from the displayer of the video player, and converting the optical signals to electric signals. The detection module is connected with the optical sensing device and the video player, the detection module comprises a signal acquisition submodule, a format conversion submodule, a correlation detection submodule, a communication alarm submodule and a parameter preservation submodule, and the detection module is used for carrying out correlation processing to two electric signals which are input to the detection module and carrying out correlation analysis. The invention also relates to a fault detection method for the displayer of the video player. The function of automatic fault detection of the displayer of the video player is achieved on the premise that normal display of original videos is not affected.
Description
Technical field
The present invention relates to a kind of failure detector, especially a kind of failure detector of video machines display and method.
Background technology
Video machines, it is by connecting the exportable video image arbitrarily of display, and range of application is very extensive, comprises the application such as advertisement broadcasting, distribution of multimedia information.Yet, after the long-time use of video machines display, or using under rugged environment, it breaks down unavoidable.Conventionally, if video machines display breaks down, related service personnel cannot obtain message the very first time and keep in repair, and conventionally need to wait until after poll operator on duty finds and just can keep in repair.When video machines display non-normal working, can affect the normal demonstration of advertisement or other guide, to associated companies, cause unnecessary loss, and need at set intervals to send operator on duty to carry out poll, seriously consumed a large amount of human and material resources.
On display fault testing mechanism, publication number is that the patent of CN1732484 by opening up one or more test sections in normal display screen, the sensing device that utilization covers on test section detects the particular sequence showing in described test section, and its testing result and original sequence are compared, thereby judge whether display occurs extremely.The method need to be opened up one or more test sections in normal display screen, and to described one or more test sections of stating, export particular sequences by controller, its complicated operation, and affected the normal demonstration (because need to open up one or more test sections in display screen) of video in original display.
Summary of the invention
The present invention has overcome the complicated operation of prior art and has affected the normal shortcoming showing of video in original display, a kind of failure detector and method of video machines display are provided, do not affecting under the normal prerequisite showing of original video, realizing the function that video machines display automatic fault detects.
To achieve these goals, the invention provides a kind of failure detector of video machines display, it is characterized in that comprising:
Optical sensing means, for gather the light signal of current display frame from video machines display, and is converted to electric signal by this light signal;
Detection module, be connected with video machines with described optical sensing means, comprise signals collecting submodule, format conversion submodule, correlation detection submodule, communication alarm submodule and parameter preservation submodule, for two electric signal of this module of input are carried out after relevant treatment, the line correlation analysis of going forward side by side
Wherein, two described electric signal are respectively the electric signal of described optical sensing means output and the electric signal of the current display frame that gathers from described video machines,
Wherein, described signals collecting submodule is used for gathering from described video machines the electric signal of current display frame,
Wherein, described format conversion submodule is used for described two electric signal of this module of input to be converted to the electric signal of specific format,
Wherein, described correlation detection submodule is used for the electric signal of two specific formats to carry out correlation analysis, and obtains a specific correlation results value,
Wherein, described communication alarm submodule is used for display abnormal information notice related service personnel,
Wherein, described parameter is preserved submodule for preserving the correlation parameter that this module relates to, and comprises the relative position parameter of described optical sensing means and described video machines display, the detected parameters in described correlation detection module etc.
For achieving the above object, the present invention also provides a kind of fault detection method of video machines display, it is characterized in that comprising:
Step 100: utilize described optical sensing means to gather the light signal of current display frame from video machines display, this light signal is converted to electric signal A;
Step 200: obtain the electric signal B of current display frame from video machines, wherein, the electric signal B of described current display frame can obtain from the screen buffer of described video machines, but is not only confined to this;
Step 300: two electric signal of input are carried out after relevant treatment, the line correlation analysis of going forward side by side, wherein, described two electric signal are respectively the electric signal A of described optical sensing means output and the electric signal B of described step 200 output.
Before described step 100, also comprise:
(a) measure the relative position parameter of described optical sensing means and described video machines display;
(b) described video machines is exported the two field picture in any video sequence to described display.
Described step 300 is specially:
(c) the electric signal A of described step 100 output is carried out to format conversion, obtain electric signal A ';
(d) the electric signal B of described step 200 output is carried out to format conversion, obtain electric signal B ', wherein, described electric signal B ' has identical form with described electric signal A ';
(e) according to the relative position calculation of parameter obtaining in described step (a) and obtain the part or all of electric signal in described electric signal B ', obtain electric signal B "; for carrying out correlation analysis with described electric signal A '; wherein, described electric signal B " has identical form with described electric signal A ' and described electric signal B ';
(f) described electric signal A ' and described electric signal B " are carried out to correlation analysis, obtain an end value.
After described step 300, also comprise:
Step 310: exceed predefined threshold range if obtain end value after correlation analysis, detection module sends a signal, indication display occurs once abnormal; Otherwise, repeating step (b);
Step 320: finish.
For existing video machines display, cannot automatically carry out the situation of fault detect, and do not affecting under the normal prerequisite showing of original video, the invention provides a kind of failure detector and method of video machines display, by described optical sensing means, gather the light signal of the current display frame of video machines display, this light signal is converted into electric signal A, from video machines, obtain the electric signal B of current display frame simultaneously, by described electric signal A with described electric signal B is sent to described detection module and after relevant treatment, carry out again correlation analysis, can obtain a specific end value.If this end value has surpassed predefined threshold value, described detection module will send a signal, and indication display occurs once abnormal.The present invention is not affecting under the normal prerequisite showing of original video, realized the function that video machines display fault detects automatically, effectively solved after video machines display breaks down and can not get notifying and causing keeping in repair the defects such as slow in time, avoided unnecessary economic loss.
Accompanying drawing explanation
Fig. 1 is the apparatus structure schematic diagram that a kind of video machines display fault of the present invention detects;
Fig. 2 is a kind of video machines display fault of the present invention detection method process flow diagram, the steps include:
Step 100: utilize described optical sensing means to gather the light signal of current display frame from video machines display, this light signal is converted to electric signal A;
Step 200: obtain the electric signal B of current display frame from video machines, wherein, the electric signal of described current display frame can obtain from the screen buffer of described video machines, but is not only confined to this;
Step 300: two electric signal of input are carried out after relevant treatment, the line correlation analysis of going forward side by side, wherein, described two electric signal are respectively the electric signal A of described optical sensing means output and the electric signal B of described step 200 output.
Fig. 3 is the embodiment process flow diagram that a kind of video machines display fault of the present invention detects.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the invention process is described:
Fig. 1 is the apparatus structure schematic diagram that a kind of video machines display fault of the present invention detects.As shown in Figure 1, a kind of video machines display fault of the present invention pick-up unit comprises optical sensing means 3, detection module 4.Wherein, described optical sensing means 3 can be positioned at the edge of display 1, also can be positioned at the right opposite of display 1.Described optical sensing means 3 is for gathering the light signal of the current display frame of described display 1, and is converted into electric signal, and wherein, described optical sensing means 3 can be comprised of one or more common optical sensors.Video machines 2 is connected with display 1, and wherein, described video machines 2 is used to indicate exports arbitrarily video sequence in described display 1.Detection module 4 is connected with described video machines 2 with described optical sensing means 3.Described detection module 4 receives two electric signal, and it is respectively the electric signal of the electric signal of described optical sensing means 3 outputs and the current display frame that gathers from described video machines 2, and wherein, described electric signal can be the pixel value of image.
For existing video machines display, cannot automatically carry out the situation of fault detect, the invention provides a kind of failure detector of video machines display, by described optical sensing means 3 is set, the light signal of the video machines display 1 current display frame collecting is converted to electric signal A and sends to described detection module 4, described detection module 4 is set simultaneously and makes it from described video machines 2, obtain the electric signal B of current display frame.Described detection module 4 after relevant treatment, then carries out correlation analysis by described electric signal A and described electric signal B, can obtain a specific end value.This end value can be used for judging whether described video machines display 1 shows extremely.
Before this example is implemented, need measure in advance the relative position parameter of described optical sensing means 3 and described video machines display 1, wherein, described relative position parameter is for calculating and obtain the part or all of electric signal of described electric signal B, wherein, described part or all of electric signal is using a reference data as correlation analysis.In the present embodiment, using the top left corner apex of described video machines display 1 as reference center's point, it is initial point, described relative position parameter can be used (x, y, z, α) four symbols are described, wherein x represents that described optical sensing means 3 is with respect to the horizontal shift of described video machines display 1, wherein y represents that described optical sensing means 3 is with respect to the perpendicular displacement of described video machines display 1, wherein z represents that described optical sensing means 3 is with respect to the distance of overlooking of described video machines display 1, wherein α represents that described optical sensing means 3 is with respect to the right opposite angle of described video machines display 1, its scope is [0, 180 °].
In the present embodiment, described video machines 2 is controlled described display 1 and is opened, and exports that video sequence is in described display 1 arbitrarily, and now, described display 1 will show any video sequence of described video machines 2 outputs.Further, described optical sensing means 3 starts to gather the light signal of current display frame in described display 1, after this light signal is converted to electric signal A and send to described detection module 4, wherein, the scope of the light signal gathering and size physical characteristics of optical sensor in described optical sensing means 3 determine, wherein, the form of described electric signal A is also that the physical characteristics of optical sensor in described optical sensing means 3 determines.Further, described detection module 4 receives described electric signal A, meanwhile receive the electric signal B of the current display frame gathering from described video machines 2, wherein, described electric signal A and described electric signal B can be image pixel data, wherein, described electric signal B can obtain from the video display buffer of described video machines 2, also can obtain from the output signal line of described video machines 2.Further, described detection module 4 is converted to described electric signal A the electric signal A ' of specific format, and described electric signal B is converted to the electric signal B ' with described electric signal A ' with same format, and wherein said specific format can be RGB picture format.Further, according to formula (1), obtain the part or all of electric signal in described electric signal B ', obtain electric signal B ", for carrying out correlation analysis with described electric signal A '.
B″=f(B'|x,y,z,α) (1)
A kind of mapping relations of B in above formula " be output signal, B ' is input signal, and parameter (x, y, z, α) is the described optical sensing means that measures in advance and the relative position parameter of described video machines display, and f is that B ' arrives B ".
Further again, by described electric signal A ' and described electric signal B " carry out correlation analysis, can obtain a specific end value, wherein, described correlation analysis can be realized as follows:
(1) by described electric signal A ' and described electric signal B, " unifying dimension processes;
(2) adopt Pearsonian correlation to calculate described electric signal A ' and described electric signal B " related coefficient;
(3) related coefficient above-mentioned steps (2) being obtained quantizes, and obtains a specific end value.
Further again, if obtaining end value, correlation analysis exceeds predefined threshold range, and detection module will send a signal, and indication display occurs once abnormal, otherwise, repeat above-mentioned steps and detect.
The present invention has realized the function that video machines display fault detects automatically, is easy to realize, and need to open up one or more test sections in original video viewing area and detect, and does not affect the normal demonstration of original video.
Fig. 3 is the embodiment process flow diagram that a kind of video machines display fault of the present invention detects, and specifically comprises:
Step 410: the relative position parameter that measures optical sensing means and video machines display;
Step 420: video machines is exported the two field picture in any video sequence to display;
Step 430: utilize optical sensing means to gather the light signal of current display frame from display, this light signal is converted to electric signal;
Step 440: the electric signal of described step 430 output is converted to the data of rgb format, obtains valid data A;
Step 450: when described step 430 is carried out, detection module gathers a two field picture of current display frame from video machines, wherein, one two field picture of described current display frame can be the video data of YUV420SP form, wherein, a two field picture of described current display frame can obtain from the video display buffer of video machines;
Step 460: the video data that the video data of the YUV420SP form of described step 450 output is converted to rgb format;
Step 470: the relative position calculation of parameter of obtaining according to described step 410 is also obtained the part or all of Pixel Information in current display frame, obtains valid data B, and now, valid data B and valid data A are the video datas of rgb format;
Step 480: described valid data A and described valid data B are carried out to correlation analysis, can obtain a specific end value, wherein, described correlation analysis can be realized as follows:
(1) described valid data A and described valid data B are unified to dimension processing;
(2) adopt Pearsonian correlation to calculate the related coefficient of described valid data A and described valid data B;
(3) related coefficient above-mentioned steps (2) being obtained quantizes, and obtains a specific end value.
Step 490: correlation results value and predefined threshold value that described step 480 is obtained compare, if the correlation results value that described step 480 obtains is greater than predefined threshold value, performs step 510, otherwise, perform step 500;
Step 500: by the zero clearing of anomalous counts value, re-execute step 420, wherein, the effect of described anomalous counts value is the number of times that statistics display breaks down continuously;
Step 510: detection module sends a signal, this signal is used to indicate described detection module and display is detected and occur once abnormal;
Step 520: anomalous counts value adds 1, and judge whether current anomalous counts value is greater than predefined anomalous counts value threshold value.If current anomalous counts value is greater than predefined threshold value, perform step 530, otherwise, perform step 500;
Step 530: the communication alarm submodule in described detection module is notified related service personnel by wireless or wired mode in time by the abnormal warning information of display;
Step 540: finish.
The present invention is not affecting under the normal prerequisite showing of original video, realized the function that video machines display fault detects automatically, effectively solved after video machines display breaks down and can not get notifying and causing keeping in repair the defects such as slow in time, avoided unnecessary economic loss.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record previous embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of embodiment of the present invention technical scheme.
Claims (5)
1. a failure detector for video machines display, is characterized in that comprising:
Optical sensing means, for gather the light signal of current display frame from video machines display, and is converted to electric signal by this light signal;
Detection module, be connected with video machines with described optical sensing means, comprise signals collecting submodule, format conversion submodule, correlation detection submodule, communication alarm submodule and parameter preservation submodule, for two electric signal of this module of input are carried out after relevant treatment, the line correlation analysis of going forward side by side
Wherein, two described electric signal are respectively the electric signal of described optical sensing means output and the electric signal of the current display frame that gathers from described video machines,
Wherein, described signals collecting submodule is used for gathering from described video machines the electric signal of current display frame,
Wherein, described format conversion submodule is used for described two electric signal of this module of input to be converted to the electric signal of specific format,
Wherein, described correlation detection submodule is used for the electric signal of two specific formats to carry out correlation analysis, and obtains a specific correlation results value,
Wherein, described communication alarm submodule is used for display abnormal information notice related service personnel,
Wherein, described parameter is preserved submodule for preserving the correlation parameter that this module relates to, and comprises the relative position parameter of described optical sensing means and described video machines display, the detected parameters in described correlation detection module etc.
2. a fault detection method for video machines display, is characterized in that comprising:
Step 100: utilize described optical sensing means to gather the light signal of current display frame from video machines display, this light signal is converted to electric signal A;
Step 200: obtain the electric signal B of current display frame from video machines, wherein, the electric signal B of described current display frame can obtain from the screen buffer of described video machines, but is not only confined to this;
Step 300: two electric signal of input are carried out after relevant treatment, the line correlation analysis of going forward side by side, wherein, described two electric signal are respectively the electric signal A of described optical sensing means output and the electric signal B of described step 200 output.
3. method according to claim 3, is characterized in that, before described step 100, also comprises:
(a) measure the relative position parameter of described optical sensing means and described video machines display;
(b) described video machines is exported the two field picture in any video sequence to described display.
4. method according to claim 3, is characterized in that, the concrete steps of described step 300 are:
(c) the electric signal A of described step 100 output is carried out to format conversion, obtain electric signal A ';
(d) the electric signal B of described step 200 output is carried out to format conversion, obtain electric signal B ', wherein, described electric signal B ' has identical form with described electric signal A ';
(e) according to the relative position calculation of parameter obtaining in described step (a) and obtain the part or all of electric signal in described electric signal B ', obtain electric signal B "; for carrying out correlation analysis with described electric signal A '; wherein, described electric signal B " has identical form with described electric signal A ' and described electric signal B ';
(f) described electric signal A ' and described electric signal B " are carried out to correlation analysis, obtain an end value.
5. method according to claim 4, is characterized in that, after described step 300, also comprises:
Step 310: exceed predefined threshold range if obtain end value after correlation analysis, detection module sends a signal, indication display occurs once abnormal; Otherwise, repeating step (b);
Step 320: finish.
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