CN106791740A

CN106791740A - A kind of DMD data faults detection method, equipment and system

Info

Publication number: CN106791740A
Application number: CN201611110744.4A
Authority: CN
Inventors: 赵石; 赵一石; 王振; 肖纪臣
Original assignee: Hisense Group Co Ltd
Current assignee: Hisense Group Co Ltd
Priority date: 2016-12-06
Filing date: 2016-12-06
Publication date: 2017-05-31
Anticipated expiration: 2036-12-06
Also published as: CN106791740B

Abstract

The invention discloses a kind of DMD data faults detection method, equipment and system.DMD will obtain the second image for the first image projection of fault detect in the present invention；First image includes N number of data wire fault detect area, a detection zone, Q check plot；According to the second image and the difference of the first image, the data fault of DMD is positioned.Because DMD writes according to N data channel row scan sequence, shown by the Q bar address wire controlled loadings of DMD again, for one detection line of mark in N data channel of the data cell of detection data line failure in each data wire fault detect area of the invention, when the data wire breaks down there is color change so as to location data line failure in detection line；Corresponding block check plot is designed according to Q bars address wire, the imaging results of the image of detection zone are identical when the image of each check plot breaks down with the address wire of the check plot, therefore by address wire detection zone and check plot comparison and location address alignment fault.

Description

A kind of DMD data faults detection method, equipment and system

Technical field

The present invention relates to projection field, more particularly to a kind of DMD data faults detection method, equipment and system.

Background technology

Digital light treatment (Digtal Light Procession, abbreviation DLP) shadow casting technique is by display vision signal warp DLP control chips are encoded into the drive signal of digital micromirror elements (Digital Micromirror Device, abbreviation DMD), It is input into DMD core devices (being referred to as DMD below the core devices).DMD is to complete to show based on digital micro-mirror device The final link of registration word visual information, is the core in DLP technological systems --- the digital micro-mirror that light engine heart is used Chip, it is on the standard semiconductor processing procedure of CMOS, to add a device that can be formed with the rotating mechanism of modulation reflecting surface.

The principle of DLP shadow casting techniques is, by a trichromatic colour circle of colored (Color Wheel), to swash light source In radiant, the colour circle generally corresponds to two colour wheels of fluorescent wheel and filter wheel, and light beam is defeated according to R, G, B three primary colours timing Go out, then expose on DMD, continuous light is switched to by GTG with the side of synchronizing signal, coordinate tri- kinds of colors of R, G, B to reveal color table Come, finally again by camera lens projection imaging.Wherein, DMD be made up of thousand up to ten thousand micro mirrors (accurate, miniature speculum) one Bistable state spatial light modulator is planted, by complementary metal oxide semiconductors (CMOS) (Complementary Metal Oxide Semiconductor, CMOS) standard semiconductor processing procedure on, adding one can be formed with the rotating mechanism of modulation reflecting surface, often Individual eyeglass can enter horizontal deflection in positive and negative certain angle, wherein light during positive deflection angle in reflection source can enter camera lens, The light of reflection source does not enter camera lens during negative bias gyration, determines to enter mirror by not dividing the angle and duration of eyeglass upset The light quantity of head.As shown in figure 1, exemplary shows different reflection knots of two reflecting optics of different deflection angles to light Really.

Fig. 1 shows that the corresponding light transmission of two kinds of deflection situations of micro mirror on DMD in the prior art is illustrated.Such as Fig. 1 institutes Show, micro mirror 101 is different from the deflection angle of micro mirror 102, micro mirror 101 is reflected by the light that its angle for deflecting sends light source 103 Onto light absorption units 104, and micro mirror 102 is reflexed on camera lens 105 light that light source 103 sends by its angle for deflecting.

Laser projection shows process：LASER Light Source light beam is projected on DMD, is shown through lens imaging again by DMD reflections Onto screen.By being input into control of the driving control signal realization to DMD to DMD, the data channel of DMD is divided into n to low-voltage Differential signal (Low-Voltage Differential Signaling, abbreviation LVDS), each pair LVDS differential data signals are passed Defeated data are 1 bit binary data, represent a battle array mirror (i.e. one small reflector, one in representative image on DMD Pixel) switch, if value be 1, then it represents that DMD gusts of mirror is opened；If 0, then it represents that galvanometer is closed, by controlling battle array mirror in different bases The coloured light irradiation lower time opened, adjust the color of each pixel of projected picture.

(Flexible Printed Circuit are referred to as by flexible PCB for DMD printed boards and DLP printed boards majority FPC) connect, two ends golden finger is crimped to the socket in correspondence printed board and is turned on ensuring path by FPC.It is following several due to existing Plant reason：

(1) golden finger of FPC and socket coordinate not in place；

(2) the data wire copper sheet of FPC is broken, printed board tear or golden finger come off；

(3) printed-board receptacle failure welding.

These situations can cause DMD data transfers bad, data wire failure or address alignment fault occur, study a kind of for this DMD data fault detection methods, the data fault for quick positioning DMD is current urgent problem.

The content of the invention

A kind of DMD data faults detection method, equipment and system are the embodiment of the invention provides, for positioning DMD data Failure.

Digital micromirror elements DMD data fault detection methods provided in an embodiment of the present invention, including：

Projector equipment will be used for the first image projection of fault detect to receiving screen, obtain described receiving the of screen display Two images；Wherein, N number of data wire fault detect area, an address wire detection zone and Q control are included in described first image Area, comprising one or more there are N data to lead in each data wire fault detect area in N number of data wire fault detect area The data cell for detection data line failure in road, the N datas of the N data channel and the DMD of the projector equipment Line is corresponded, and each is used to include a detection line in the data cell of detection data line failure, the inspection of each data wire failure Survey in area for the data channel corresponding to the detection line in the data cell of detection data line failure and other data wire failures Detection zone is differed, and N is the integer more than or equal to 1, and the Q check plot corresponds with the Q bars address wire of the DMD, The imaging of the image of the address wire detection zone when image of each check plot address wire corresponding with the check plot breaks down Result is identical；

According to the difference between second image and described first image, the data fault of the DMD is positioned.

Alternatively, the difference according between second image and described first image, positions the data of the DMD Failure, including：

If the detection line in k-th data wire fault detect area in second image, with phase in described first image Answer between the detection line in data fault detection zone and there is display difference, then according in the k-th data fault detection zone For the data channel corresponding to the detection line in the data cell of detection data line failure, the corresponding number of the data channel is determined According to line failure, K is the integer more than or equal to 1 and less than or equal to N；And/or

If the image in address wire detection zone in second image, with the k-th check plot in second image Interior image is identical, it is determined that the address alignment fault corresponding to the k-th check plot, K is more than or equal to 1 and whole less than Q Number.

Alternatively, if the detection line in k-th data wire fault detect area in second image is shown as accordingly The color shown during data wire open circuit fault, then according to former for detection data line in the k-th data fault detection zone The data channel corresponding to detection line in the data cell of barrier, determines that the corresponding data wire of the data channel occurs open circuit event Barrier；Or,

If it is short that the detection line in k-th data wire fault detect area in second image is shown as corresponding data line The color shown during the failure of road, then according to the data for detection data line failure in the k-th data fault detection zone The data channel corresponding to detection line in unit, determines that the corresponding data wire of the data channel is short-circuited failure.

Alternatively, in described first image, the data channel corresponding to detection line in each data wire fault detect area It is the first color, the color of other data channel is the second color, and first color and second color are differed；Or Person,

In described first image, the data cell that detection data line failure is used in each data wire fault detect area is drawn It is divided into Part I and Part II, wherein：

The data channel corresponding to detection line in Part I data cell is the first color, the face of other data channel Color is the second color, and first color and second color are differed, and second color is data channel open circuit fault When color；

The data channel corresponding to detection line in Part II data cell is the 3rd color, the face of other data channel Color is the 4th color, and the 3rd color and the 4th color are differed, and the 4th color is data channel short trouble When color.

Alternatively, the data cell of detection data line failure is used in data wire fault detect area, is the data wire failure The all or part data cell included in detection zone.

Alternatively, corresponding to the detection line being used in the data cell of detection data line failure in data wire fault detect area Data channel numbering, the numbering with the data wire fault detect area is identical.

Alternatively, the resolution ratio of described first image is equal to the resolution ratio of the DMD.

Alternatively, each check plot includes open circuit fault check plot and/or short trouble check plot；

Described in when there is open circuit fault in the image of the open circuit fault check plot and the address wire corresponding to the check plot of place The imaging results of the image of address wire detection zone are identical；

The image of the short trouble check plot and the address wire corresponding to the check plot of place be short-circuited failure when described in The imaging results of the image of address wire detection zone are identical.

Alternatively, if image in address wire detection zone in second image, with the k-th in second image The image of the short trouble check plot in check plot is identical, it is determined that the address wire corresponding to the k-th check plot occurs short Road failure；Or,

If the image in address wire detection zone in second image, with the k-th check plot in second image The image of interior open circuit fault check plot is identical, it is determined that the address wire corresponding to the k-th check plot occurs open circuit fault.

Alternatively, the address wire detection zone includes 2^QIndividual block, each block uses Q that the Q bars address wire is exported Address is identified, and two neighboring piece of color is different.

Digital micromirror elements DMD data fault testing equipments provided in an embodiment of the present invention, including：

Acquisition module, for obtaining the second image obtained by projector equipment is projected to the first image；Wherein, it is described N number of data wire fault detect area, an address wire detection zone and Q check plot, N number of data wire are included in first image In each data wire fault detect area in fault detect area comprising one or more have N data channel for detection data The data cell of line failure, the N data channel is corresponded with the N data lines of the DMD of the projector equipment, each use A detection line is included in the data cell of detection data line failure, detection data is used in each data wire fault detect area Data channel corresponding to detection line in the data cell of line failure is differed with other data wire fault detect areas, and N is Integer more than or equal to 1, the Q bars address wire of the Q check plot and the DMD is corresponded, the image of each check plot with The imaging results of the corresponding address wire in check plot image of address wire detection zone when breaking down are identical；

Detection module, for according to the difference between described first image and second image, positioning the number of the DMD According to failure.

Alternatively, the detection module specifically for：

Alternatively, the detection module is specifically additionally operable to：

If the detection line in k-th data wire fault detect area in second image is shown as corresponding data line breaking The color shown during the failure of road, then according to the data for detection data line failure in the k-th data fault detection zone The data channel corresponding to detection line in unit, determines that the corresponding data wire of the data channel occurs open circuit fault；Or,

Alternatively, the detection module is specifically additionally operable to：

If the image in address wire detection zone in second image, with the k-th check plot in second image The image of interior short trouble check plot is identical, it is determined that the address wire corresponding to the k-th check plot is short-circuited failure； Or,

Digital micromirror elements DMD data fault detecting systems provided in an embodiment of the present invention, including：

Include the projector equipment of DMD, for receiving screen, will obtain described for the first image projection of fault detect Receive the second image of screen display；Wherein, N number of data wire fault detect area, an address wire are included in described first image Detection zone and Q check plot, in each data wire fault detect area in N number of data wire fault detect area comprising one or Multiple has a data cell for detection data line failure of N data channel, the N of the N data channel and the DMD Data line is corresponded, and each is used to include a detection line, each data wire in the data cell of detection data line failure The data channel and other data corresponding to detection line being used in the data cell of detection data line failure in fault detect area Line fault detect area differs, and N is the integer more than or equal to 1, and the Q bars address wire of the Q check plot and the DMD is one by one Correspondence, the image of the address wire detection zone when image of each check plot address wire corresponding with the check plot breaks down Imaging results are identical；

Fault test set, the second image for obtaining the reception screen display, and by second image and institute State the first image to be compared, position the data fault of the DMD.

Alternatively, the fault test set specifically for：

If the detection line in k-th data wire fault detect area in second image, with phase in described first image Answer between the detection line in data fault detection zone and there is display difference, then according in the k-th data fault detection zone For the data channel corresponding to the detection line in the data cell of detection data line failure, the corresponding number of the data channel is determined According to line failure, K is the integer more than or equal to 1 and less than or equal to N；

Alternatively, the fault test set specifically for：

In the above embodiment of the present invention, projector equipment, to receiving screen, is obtained for the first image projection of fault detect To the second image for receiving screen display；Wherein, N number of data wire fault detect area, an address wire inspection are included in the first image Area and Q check plot are surveyed, is had comprising one or more in each data wire fault detect area in N number of data wire fault detect area There is a N data cell for detection data line failure of data channel, the N of N data channel and the DMD of the projector equipment Data line is corresponded, and each is used to include a detection line, each data wire in the data cell of detection data line failure The data channel and other data corresponding to detection line being used in the data cell of detection data line failure in fault detect area Line fault detect area differs, and N is the integer more than or equal to 1, and Q check plot corresponds with the Q bars address wire of DMD, often The imaging knot of the image of the address wire detection zone when image of individual check plot address wire corresponding with the check plot breaks down It is really identical；According to the difference between second image and described first image, the data fault of DMD is positioned.Because DMD is aobvious When showing, the mode scanned according to N data channel row is sequentially written in the caching of DMD, then by the Q bar address wire controlled loadings of DMD It has been shown that, in the scheme that the present invention is provided, the data of detection data line failure to be used in each data wire fault detect area One detection line of mark in N data channel of unit, the detection line of respective markers will be sent out when data wire occurs specific fault The corresponding color change of life, so as to the change location data line failure according to detection line color；It is corresponding according to address wire design Check plot, when the image of each check plot address wire corresponding with the check plot breaks down the image of address wire detection zone into As result is identical, therefore address wire detection zone and Q check plot are compared, realize positioning address line failure.

Brief description of the drawings

Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to that will make needed for embodiment description Accompanying drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this For the those of ordinary skill in field, without having to pay creative labor, it can also be obtained according to these accompanying drawings His accompanying drawing.

Fig. 1 is the schematic diagram of micro mirror skew in the prior art on DMD and projection；

A kind of schematic flow sheet of the method for detection DMD data wire failures that Fig. 2 a are provided for the present invention；

A kind of schematic flow sheet of the method for detection address alignment fault that Fig. 2 b are provided for the present invention；

Fig. 2 c can also detect address alignment fault for a kind of data wire failure that can both detect DMD that the present invention is provided Method flow schematic diagram；

A kind of graph card schematic diagram of detection DMD data wire failures that Fig. 3 is provided for embodiments of the invention；

Fig. 4 is the detailed maps of detection zone 5 in graph card shown in Fig. 3 provided in an embodiment of the present invention；

Fig. 5 is the detailed maps of data cell in detection zone shown in Fig. 3 provided in an embodiment of the present invention；

Fig. 6 is that detection zone 5 shown in Fig. 3 shows when the 5th data channel provided in an embodiment of the present invention occurs open circuit fault As schematic diagram；

Fig. 7 be the 5th data channel provided in an embodiment of the present invention be short-circuited failure when Fig. 3 shown in detection zone 5 show As schematic diagram；

Fig. 8 is a kind of graph card schematic diagram of detection DMD block load faults provided in an embodiment of the present invention；

Fig. 9 is that Article 2 address wire provided in an embodiment of the present invention the phenomenon of graph card during short trouble shown in Fig. 8 occurs Schematic diagram；

Figure 10 both can also detect address alignment fault for one kind provided in an embodiment of the present invention with detection data line failure Graph card schematic diagram；

The schematic diagram of graph card when Figure 11 is the open circuit of data channel provided in an embodiment of the present invention 5, the open circuit of Article 2 address wire；

Figure 12 is a kind of apparatus structure schematic diagram of fault test set provided in an embodiment of the present invention；

Figure 13 both can also detect address alignment fault for one kind provided in an embodiment of the present invention with detection data line failure System schematic.

Specific embodiment

In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing the present invention is made into One step ground is described in detail, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole implementation Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made All other embodiment, belongs to the scope of protection of the invention.

As stated in the Background Art, when DMD data transfers are bad, it may appear that data wire failure or address alignment fault, to data The specific explanations of line failure and address alignment fault are as described below：

Data wire failure：DMD can be malfunctioned in ad-hoc location each row write is fashionable, and phenomenon is that entire image is all loaded Afterwards, the image after projection a plurality of bright line or concealed wire can occur on specific file position.

The reason for appearance vertical line hinders：DMD data receivers are parallel n-bit data channel transfer, and this n-bit data passage is by row Scan mode is sequentially written in the caching of DMD, and the switch of corresponding each pixel of the data in caching, this writing mode determines In any a line per continuous n pixel in any point all fixed correspondingly n-bit data passage fix one.Work as n One or several failure in the data channel of position, then just have fixed data wire failure on the image for being formed.With The resolution ratio of DMD is for as a example by 1920*1080, its data channel is 32, it is assumed that the first data line open circuit, then DMD is every Secondary row write is fashionable all to be malfunctioned in specific position, therefore 1920/32=60 bars white vertical line is had in the image for being formed, and often Every 31 pixels, it may appear that a vertical line, and failure data wire on the data wire of other non-failures without influence.For example, using x Represent columns, make 0≤x≤n, if xth row, xth+32 row, xth+32 × 2 row ..., xth+32 × (n ÷ 32-1) all for therefore The lines of barrier, then illustrate that xth position data channel breaks down.

Specifically, when there is data wire failure, if there is vertical line for white, show at the DMD galvanometers at the vertical line In full-gear, now the fault type of corresponding fault data passage is the open circuit of LVDS differential lines, and it is 1 to be worth；If there is Vertical line is black, shows that the DMD galvanometers at the vertical line are in full off state, now the fault type of corresponding fault data passage It is the short circuit of LVDS differential lines, it is 0 to be worth.Data wire failure is alternatively referred to as vertical line failure.

Address alignment fault：When DMD blocks show, there is all pixels point in specific region entirely white in address wire loading error.Ground Location line failure is alternatively referred to as block failure.

The reason for address alignment fault：DMD images are that block loading mode, i.e. entire image are divided into 1 row m blocks when loading, and are led to Cross 4 address wires and address this m block, the quantity of block is no more than 2^4=16 blocks.For example, being by 1920*1080 of the resolution ratio of DMD Example, m is 15, then every piece of pixel is 1920*72.When block is loaded, each data cell first writes caching, waits all of the block Data are ready for completing, then carry out block loading, and the data area of address wire is (0000~1110) B, represents the 1st piece of loading~the 15 pieces, if wherein one address wire or several address wires go wrong, image loading occurs address alignment fault.

There are 4 address wires in the embodiment of the present invention, 16 pieces can be at most controlled by binary combination.One address wire goes out During existing failure, address alignment fault just occurs, open circuit occurs in such as first address wire, then this signal line is always Isosorbide-5-Nitrae The end numeral just always 1 of the binary address of bar address wire, if the address wire of normal display is expressed as：0001、0010、 0011st, 0100,0101 ..., 1110,1111, then when open circuit fault occurs in first address wire, end is 1 numeral guarantor Hold 1, end be 0 numeral according to 0 display, if address wire normally display is expressed as：0000、0001、0010、0011、 0100th ..., 1110 etc., then when block is loaded, first address wire open circuit fault, address wire display during failure is represented For：0001st, 0001,0011,0011 ..., 1111, the block of failure is：1st, 3,5 ..., 15, it can be seen that a ground There is open circuit fault in location line, then the block display for having half is abnormal, by the permutation and combination method for abnormal block occur, can be true The fixed specific address wire for breaking down.

The embodiment of the present invention provides the data fault for aiding in detecting DMD using specific test image.

In the embodiment of the present invention, for the DMD of different resolution, the test image of corresponding resolution can be designed, be used for Data fault to DMD is detected.Generally, the resolution ratio of test image need to be identical with the resolution ratio of DMD.

The following examples are given for detecting DMD data wires event as a example by carrying out data wire fault detect to DMD The test image of barrier, the test image is alternatively referred to as graph card.N number of data wire fault detect area, each data are included in the graph card There is the N data cell for detection data line failure of data channel, N comprising one or more in line fault detect area Data channel is corresponded with the N data lines of DMD, and each is used in the data cell of detection data line failure comprising an inspection Survey line, the data corresponding to detection line being used in the data cell of detection data line failure in each data wire fault detect area Passage is differed with other data wire fault detect areas, and N is the integer more than or equal to 1.

Further, the detection line institute being used in the data cell of detection data line failure in data wire fault detect area is right The numbering of the data channel answered, the numbering with the data wire fault detect area is identical.Wherein, choose for detection data line failure Data cell when, each data fault detection zone choose data cell quantity can be the same or different, each data Fault detect area can choose all or part data cell for carrying out data wire fault detect, and the embodiment of the present invention is not done to this Specific limitation.

The color of the corresponding data channel of detection line in the data wire fault detect area of graph card includes following two situations：

Situation 1：In graph card, the data channel corresponding to detection line in each data wire fault detect area is the first face Color, the color of other data channel is the second color, and the first color and the second color are differed.For example, the first color can be Red, the second color can be white, the data wire failure of the data cell for being used for data wire fault detect with 10 For detection zone, if the numbering in the data wire fault detect area is n, n-th in each data cell in the region The color of data channel is red, and the color of other data channel is white, i.e., in the fault detect area, in white background Form 10 detection lines of red.

Situation 2：In graph card, the data cell that detection data line failure is used in each data wire fault detect area is divided It is Part I and Part II, wherein：The data channel corresponding to detection line in Part I data cell is the first face Color, the color of other data channel is the second color, and the first color and the second color are differed, and the second color is disconnected for data channel The color during failure of road；The data channel corresponding to detection line in Part II data cell is the 3rd color, other data The color of passage is the 4th color, and the 3rd color and the 4th color are differed, when the 4th color is data channel short trouble Color.For example, the first color is red, the second color is white, and the 3rd color is black, and the 4th color is green, for tool Having 10 is used for for the data wire fault detect area of the data cell of data wire fault detect, if the data wire fault detect The numbering in area is n, then the color of the nth data passage of the Part I data cell in the region is red, other data The color of passage is white；The color of the nth data passage of Part II data cell is green, the face of other data channel Color is black, i.e., in the fault detect area, 5 detection lines of red are formed in the white background of a part, in another portion Divide and 5 detection lines of green are formed in the background colour of black.

Referring to Fig. 2 a, for a kind of method that DMD data wire failures are detected according to the graph card of above-mentioned design that the present invention is provided Schematic flow sheet, the flow specifically includes following steps：

Step 101a：Include graph card (the i.e. above-mentioned figure that the projector equipment of DMD will be used to detect data wire failure Card) receiving screen is projected to, obtain receiving the second image of screen display.

In the step, in certain embodiments, include DMD projector equipment receive indicate after will be used for fault detect Graph card projects to receiving screen.Specifically, the instruction can be that fault test set or the equipment with identity function send , the projector equipment for including DMD received and project to after receiving screen obtains the second image the graph card after instruction, and fault detect sets It is standby to obtain second image, and perform step 102a.

Step 102a：The detection line in data wire fault detect area in the second image and corresponding data event in graph card The display difference between detection line in barrier detection zone, positions the data wire failure of DMD.

In the step, the data wire failure of DMD is positioned by the following method：

If the detection line in k-th data wire fault detect area in the second image, examines with corresponding data failure in graph card There is display difference between the detection line surveyed in area, then according to former for detection data line in k-th data fault detection zone The data channel corresponding to detection line in the data cell of barrier, determines the corresponding data wire failure of the data channel, K be more than Integer equal to 1 and less than or equal to N.

Further, data wire failure includes data wire open circuit and data wire two kinds of situations of short circuit, fixed by the following method The data wire of position DMD is open circuit or short trouble：

Location data line open circuit fault：If the detection line in k-th data wire fault detect area in the second image is shown Be shown as the color shown during corresponding data line open circuit fault, then according in k-th data fault detection zone for detection data The data channel corresponding to detection line in the data cell of line failure, determines that the corresponding data wire of the data channel occurs open circuit Failure.

Location data line short trouble：If the detection line in k-th data wire fault detect area in the second image is shown Be shown as the color shown during corresponding data line short trouble, then according in k-th data fault detection zone for detection data The data channel corresponding to detection line in the data cell of line failure, determines that the corresponding data wire of the data channel is short-circuited Failure.

As can be seen that the projector equipment for including DMD will project to receiving screen for the graph card of fault detect, received Second image of screen display；The detection line in data wire fault detect area in the second image and corresponding data in graph card Display difference between detection line in fault detect area, positions the data wire failure of DMD.Because DMD is in display, according to N The mode of position data channel row scanning is sequentially written in the caching of DMD, in the scheme that the present invention is provided, in the inspection of each data wire failure Survey for one detection line of mark in N data channel of the data cell of detection data line failure in area, data wire occurs special Corresponding detection line will occur corresponding color change when determining failure, so that location data line failure.

The following examples are given for detecting DMD address wires event as a example by carrying out address alignment fault detection to DMD Another graph card of barrier.The graph card includes the Q bars ground of an address wire detection zone and Q check plot, Q check plot and DMD Location line is corresponded, the address wire detection zone when image of each check plot address wire corresponding with the check plot breaks down Image imaging results it is identical；Address wire detection zone includes 2^QIndividual block, the Q ground that each block is exported using Q bars address wire Location is identified, and two neighboring piece of color is different；Each check plot includes open circuit fault check plot and/or short trouble pair According to area, wherein, when there is open circuit fault in the image of open circuit fault check plot and the address wire corresponding to the check plot of place describedly The imaging results of the image of location line detection zone are identical；The image of short trouble check plot and the address wire corresponding to the check plot of place The imaging results of the image of the address wire detection zone are identical during the failure that is short-circuited.

Referring to Fig. 2 b, for a kind of detection that DMD address alignment faults are detected according to the graph card of above-mentioned design that the present invention is provided The schematic flow sheet of method, the flow is comprised the following steps：

Step 101b；Include the projector equipment of DMD to throw graph card (i.e. for detecting the graph card of the DMD address alignment faults) Shadow obtains receiving the second image of screen display to receiving screen.

Step 102b：By the figure in the check plot in the image and the second image in the address wire detection zone in the second image As being contrasted, the address alignment fault of the DMD is positioned according to comparing result.

In the step, the address alignment fault of DMD is positioned by the following method：

If the image in k-th check plot in the image in address wire detection zone in the second image, with the second image Identical, it is determined that the address alignment fault corresponding to k-th check plot, K is the integer more than or equal to 1 and less than Q.

Further, address alignment fault is divided into address wire open circuit or address wire short circuit again, specific for both of these case Localization method is as follows：

If the short circuit in k-th check plot in the image in address wire detection zone in the second image, with the second image The image of failure check plot is identical, it is determined that the address wire corresponding to k-th check plot is short-circuited failure.

If the open circuit in k-th check plot in the image in address wire detection zone in the second image, with the second image The image of failure check plot is identical, it is determined that the address wire corresponding to k-th check plot occurs open circuit fault.

As can be seen that the projector equipment for including DMD will project to receiving screen for the graph card of fault detect, received Second image of screen display；By in the check plot in the image and the second image in the address wire detection zone in the second image Image is contrasted, and the address alignment fault of DMD is positioned according to comparing result.Because DMD is in display, by the Q bar address wires of DMD Control carries out loaded and displayed, in the scheme that the present invention is provided, designs address wire detection zone, and set according to the Q bar address wires of DMD Count corresponding block check plot, address wire detection zone when the image of each check plot address wire corresponding with the check plot breaks down Image imaging results it is identical, therefore address wire detection zone and Q check plot are compared, thus positioning address line therefore Barrier.

In certain embodiments, projector equipment projects to after receiving screen obtains the second image the graph card for detecting failure, root According to the display difference between the image of eye-observation first and the second image, the data fault of DMD is determined, or, by with taking the photograph As the equipment of function is transmitted to the computer with Treatment Analysis function by the second image for obtaining is projected, the calculator memory is contained First image, by the computer by the difference between its Treatment Analysis function the first image of contrast and the second image, and then really Determine the data fault of DMD, the embodiment of the present invention is not done specifically to the data fault for still determining DMD by computer by human eye Limitation.

As a example by data wire failure and address alignment fault detection are carried out to DMD, giving can both examine the following examples Surveying data wire failure can also detect another graph card of address alignment fault.N number of data wire fault detect area is included in the graph card, One address wire detection zone and Q check plot, wherein, to N number of data wire fault detect area, address wire detection zone and Q are individual right Concrete principle according to area's design can be found in above-mentioned associated description, and specific description is not done herein.

Referring to Fig. 2 c, for a kind of another graph card detection data line failure and ground according to above-mentioned design that the present invention is provided The method flow schematic diagram of location line failure, the method flow is comprised the following steps：

Step 101c：The projector equipment for including DMD will be (i.e. above-mentioned both to detect for the first image of fault detect Data wire failure can also detect the graph card of address alignment fault) receiving screen is projected to, obtain receiving the second image of screen display.

Step 102c：According to the difference between the second image and the first image, the data fault of DMD is positioned.

In the step, the data fault of DMD is specifically divided into data wire failure and address alignment fault, location data line failure It is consistent with method in Fig. 2 a, Fig. 2 b with the specific method of address alignment fault, reference can be made to the related description in Fig. 2 a, Fig. 2 b, This does not do specific description.

In the above embodiment of the present invention, include the projector equipment of DMD by for the first image projection of fault detect To receiving screen, obtain receiving the second image of screen display；According to the display difference between the second image and the first image, positioning The data fault of DMD.Because DMD is in display, the mode scanned according to N data channel row is sequentially written in the caching of DMD, or Person is shown by the Q bar address wire controlled loadings of DMD, in the scheme that the present invention is provided, in each data wire fault detect area One detection line of mark in N data channel of the interior data cell for detection data line failure, the data wire occurs specific During failure, the detection line will occur corresponding color change, so that rapidly locating line failure；Set according to Q bar address wires Corresponding Q block check plot is counted, address wire inspection when the image of each check plot address wire corresponding with the check plot breaks down The imaging results for surveying the image in area are identical, therefore address wire detection zone and Q check plot are compared, and realize positioning address Line failure.

In the embodiment of the present invention, for the DMD of different resolution, the graph card of corresponding resolution can be designed, for DMD Data fault detected.The following examples are given as a example by carrying out fault detect for 1920*1080DMD to resolution ratio Graph card for detecting the DMD data faults.The DMD has 32 data lines, and data channel is 32, there is 4 address wires, is indulged It it is 15 pieces to block number.Wherein, the graph card shown in Fig. 2 is used to detect the data wire failure of DMD, and the graph card shown in Fig. 7 is used to detect The address alignment fault of DMD, the graph card shown in Fig. 9 not only can be used for detecting the data wire failure of DMD but also can be used for detecting DMD's Address alignment fault.

As shown in figure 3, the resolution ratio of the graph card is 1920*1080,32 data wire fault detect areas are divided into altogether, each There are 4 detection zones on line direction, therefore 1920/32/4=15 data cell, each data sheet can be included in each detection zone There are 32 data channel (not shown)s in unit.10 data cells are chosen from 15 data cells of each detection zone to enter Row fault detect, in order to during 10 data cells that later observation is chosen, data wire therein changes simultaneously so that existing As more obvious.

In each data cell for data wire fault detect in each detection zone, there is a detection line (in Fig. 3 Not shown detection line, detection line for details, reference can be made to Fig. 4).Detection line in one data cell is located at 32 of the data cell On a passage in data channel, and the numbering of the data channel is identical with the numbering of the detection zone where the data cell. It is the specific schematic diagram of detection zone 5 in the graph card shown in Fig. 3 referring to Fig. 4,10 data of vertical line detection is used in detection zone 5 In unit, detection line is located at the 5th data channel.The background colour of the graph card is white, the inspection for detecting DMD data wire failures Survey line is red.

Likewise, the schematic diagram of other detection zones is similar to Fig. 4, its difference is that red detection line is in detection zone In position it is different with Fig. 4, data channel position and the data cell institute in each data cell residing for red detection line Detection zone numbering it is consistent, at this other detection zones are not made with specific introduction.

Referring to Fig. 5, be detection zone 5 shown in Fig. 4 10 data cells in a specific schematic diagram for data cell.Cause Data cell shown in Fig. 5 is located at detection zone 5, so the red detection line in Fig. 5 is located at 32 digits in the data cell According to the 5th data channel in passage.Fig. 5 only shows a schematic diagram for data cell in detection zone 5, other 9 data sheets The schematic diagram of unit does not do specific description herein as Fig. 5.

Likewise, the schematic diagram of each data cell is similar to Fig. 5 in other detection zones, difference is that red is examined Survey line location in data cell is different with Fig. 5, and red detection line is in the middle location of each data cell Numbering with the detection zone where the data cell is consistent, i.e. red detection line in the data cell in detection zone 1 is in the The position of a data passage, the red detection line in the data cell in detection zone 2 is in the position of second data channel, The position of the red detection line in the data cell of other detection zones the like can draw, at this to the number of other detection zones Specific introduction is not done according to unit.

Exported the graph card shown in Fig. 3 as piece image, Projection Display is carried out with DMD.In projection process, DMD is received The corresponding drive signal of the graph card, the graph card is projected on receiving screen.By the way that image and graph card on receiving screen will be projected to It is compared, the data wire failure of DMD can be detected.Wherein, if occur in projection-display image black vertical line or Should show the position of red detection line fail to show red detection line (because background colour is white in the embodiment of the present invention, So if when there is open circuit fault, red detection line becomes white vertical line, and the white vertical line combines together with background colour, therefore The position of display red detection line fails to show red detection line), then show that DMD occurs data wire failure.Further, Can determine that the data channel of data wire failure occur, specifically, it may include several situations below：

If the 1, the 5th data channel open circuit, graph card can show following phenomenon：Detected in whole graph card shown in Fig. 3 Area 5 shows complete white, and other detection zones show unchanged.Explanation to this phenomenon is specific as follows：5th data channel open circuit When, 60 white vertical lines occur on whole graph card, in the detection zone 5 of corresponding 5th data channel, 10 red detections Line is changed into white vertical line, and the white vertical line combines together with white background color, therefore now detection zone 5 shows complete white；Other inspections Survey area and show unchanged, particularly due to：10 white vertical lines are had in other detection zones, for no other reason than that the background colour of graph card is White, so this 10 white vertical lines and white background color combine together, therefore only sees 10 red in other detection zones Detection line, thus show unchanged.

It is that the phenomenon of the display of detection zone 5 when the 5th data channel occurs open circuit fault (only shows detection zone referring to Fig. 6 5), the red detection heading line off therein compared with the detection zone 5 shown in Fig. 4.

If the 2, the 5th data channel short circuit, graph card can show following phenomenon：In the detection zone 5 of the graph card shown in Fig. 3 10 red detection lines become black detection line, have 10 red detection lines and 10 black vertical lines in other detection zones. Specific explanations to this phenomenon are as follows：During the 5th data channel short circuit, 60 black vertical lines occur on whole graph card, In the 5th detection zone 5 of data channel of correspondence, 10 red detection lines become 10 black vertical lines, removing in other detection zones 10 red detection lines being originally present can have more 10 black vertical lines, and 10 black vertical lines are used to represent correspondence detection zone In the 5th data channel be short-circuited failure.

Referring to Fig. 7, be the 5th data channel be short-circuited failure when the display of detection zone 5 phenomenon (only show detection zone 5), red detection line therein is changed into black detection line compared with the detection zone 5 shown in Fig. 4.

If the 3, long numeric data passage occurs data wire failure, the detection zone in observation graph card whether there is red detection line The phenomenon of disappearance, if in the presence of, then it represents that there is open circuit fault in the corresponding data channel of the detection zone.Such as, if detection zone 1, inspection Red detection heading line off in area 2, detection zone 3 is surveyed, detection zone 1, detection zone 2, detection zone 3 show complete white, then it represents that the 1st data are led to There is open circuit fault in road, the 2nd data channel, the 3rd data channel.Similarly, in detection zone 1, other two be there is also White vertical line, this two articles white vertical lines are used to represent that open circuit fault occur in corresponding 2nd data channel, the 3rd data channel；Detection Also the white vertical line of other two occurs in area 2, for representing that the 1st data channel, the 3rd data channel occur open circuit fault； Also the white vertical line of other two occurs in detection zone 3, for representing that the 1st data channel, the 2nd data channel occur open circuit event Barrier, and for other detection zones in addition to detection zone 1,2,3, three white vertical lines can all occur.

The bar number of red detection line and red detection line in graph card can be adjusted according to specific circumstances, with convenient Inspection personnel observes and Taking Pictures recording.Such as, when there is above-mentioned a plurality of data lines failure, red detection line is changed into white detection Line combines together with background colour, and this allows for quick and precisely determining that open circuit event occurs in the 1st data channel in detection zone 1 Barrier, without being influenceed by the open circuit fault that the 2nd data channel and the 3rd data channel occur, because the red detection line of this detection zone Disappear, and still have red detection line in the detection zone of non-faulting.Likewise, in detection zone 2 and 3, red detection heading line off, Fast can accurately determine that open circuit fault occur in the 2nd, 3 data channel, and it is corresponding in detection zone 1, there is also other Two white vertical lines, this two articles white vertical lines are used to represent that open circuit fault occur in corresponding 2nd data channel, the 3rd data channel, Therefore when graph card is set, the color of detection line can be made into other color according to actual conditions, naturally it is also possible to according to reality Border situation changes the color of background colour, and to facilitate inspection personnel to observe and record, specific limit is not done in embodiment of the present invention contrast System.

In the above embodiments, 10 data cells are have chosen from each data cell, the embodiment of the present invention is to choosing The quantity of data cell do not do specific limitation.

It is a kind of graph card schematic diagram of detection block load fault provided in an embodiment of the present invention referring to Fig. 8.

As shown in figure 8, the resolution ratio of the graph card is 1920*1080,5 pieces are divided into altogether, wherein, including a block detection Area, 4 block check plots (block check plot 1 to block check plot 4).Two kinds of address alignment faults are respectively divided into each block check plot again Check plot.As illustrated, in block check plot 1 comprising first check plot of address wire short trouble phenomenon (as shown in FIG. " 1 is short " shown in region) and open circuit fault phenomenon check plot (region shown in " 1 break " as illustrated in the drawing), block control Check plot (region shown in " 2 is short " as illustrated in the drawing) comprising Article 2 address wire short trouble phenomenon and open circuit in area 2 The check plot (region shown in " 2 break " as illustrated in the drawing) of phenomenon of the failure, comprising the short circuit of Article 3 address wire in block check plot 3 The check plot (region shown in " 3 is short " as illustrated in the drawing) of phenomenon of the failure and the check plot of open circuit fault phenomenon are (such as institute in figure The region shown in " 3 break " for showing), the check plot comprising Article 4 address wire short trouble phenomenon is (such as institute in figure in block check plot 4 The region shown in " 4 is short " for showing) and open circuit fault phenomenon check plot (region shown in " 4 break " as illustrated in the drawing).

From figure 8, it is seen that the arrangement mode of black patch and grey block is different in 4 block check plots.This is because, for For binary 4 bit address line, such as the first bit address line breaks down, such as short circuit, then the address wire is always 0, if Normal address shows and is：0000、0001、0010、0011、0100、0101、0110、0111、1000、1001、1010、1011、 1100th, 1101,1110, the first bit address line be short-circuited failure when, the first bit address line be 0 still according to 0 display, first Bit address line be 1 also according to 0 display, then address wire shows and becomes：0000、0000、0010、0010、0100、0100、 0110th, 0110,1000,1000,1010,1010,1100,1100,1110, therefore compared to normal display, the first bit address line During the failure that is short-circuited, primary fault is occurred as soon as every an address block；If the first bit address line is breaking, the first bit address line is 1 still according to 1 display, the first bit address line be 0 also according to 1 display, then address wire become 0001,0001,0011, 0011st, 0101,0101,0111,0111,1001,1001,1011,1011,1101,1101,1111, normally shown with address wire Compare, when the first bit address line occurs open circuit fault, primary fault occur every a block, and occur with the first bit address line short Road failure is compared, and the block that the first bit address line breaks down when occurring breaking breaks down when being short-circuited with the first bit address line Block contrast, as can be seen from Figure 8,1 in short-term, and the arrangement mode of black patch and grey block is：It is grey block, black patch, grey block, black Block, grey block, black patch, grey block, black patch, grey block, black patch, grey block, black patch, grey block, black patch, grey block, 1 it is disconnected when, black patch and grey block Arrangement mode is：Black patch, grey block, black patch, grey block, black patch, grey block, black patch, grey block, black patch, grey block, black patch, grey block, black patch, Grey block, black patch, therefore 1 short and 1 fault block arrangement mode contrast.It is black when other address wires occur open circuit and short trouble The principle of the arrangement of block and grey block is identical with the first bit address line, the block of the failure of its appearance also contrast, herein not to it The arrangement mode of the black patch of its address wire and grey block is specifically introduced.In the embodiment of the present invention, the definition to address wire is： Address wire is 4, and lowest order address wire is first address wire, and second address wire is Article 2 address wire, the 3rd bit address Line is Article 3 address wire, and highest addresses line is Article 4 address wire, and the definition to address wire can also have otherwise, this Inventive embodiments do not do specific limitation to this.

Specifically, when detecting address alignment fault, shown the graph card as picture material input DMD, if DMD has block Load fault, then block detection zone phenomenon of the failure occurs, black patch and the arrangement mode of grey block that block is detected and block check plot The arrangement mode of black patch and grey block is compared, so as to judge it is which kind of failure according to block check plot.Specifically, block detection zone with When the display of certain block check plot is consistent, then it represents that the corresponding failure in the check plot occurs in DMD, such as, and block detection zone and block pair When showing consistent according to 1 in area 1 is short, then show to control first address wire of DMD short trouble occur.Block is loaded by 4 ground Location line traffic control, if certain bit address line is short-circuit, the address wire numerical value is always 0, if certain bit address line is breaking, the address wire one Straight is 1.

Exported the graph card shown in Fig. 8 as piece image, Projection Display is carried out with DMD.In projection process, DMD is received The corresponding drive signal of the graph card, the graph card is projected on receiving screen.By the way that image and graph card on receiving screen will be projected to It is compared, the data wire failure of DMD can be detected.Wherein, if occurring complete white pixel in projection-display image, Then show that DMD occurs address alignment fault.Further, it may be determined that the specific address wire of address alignment fault occur, specifically, wrap Include situations below：

If open circuit fault occurs in Article 2 address wire, the display phenomenon of graph card is as follows：Grey block in block detection zone and black The arrangement mode of block is consistent with the arrangement mode of black patch with grey block under in block check plot 22 disconnected check plots, when block failure occurs, no Only block detection zone (namely image Far Left) breaks down, and entire image plenary session is faulty, but aobvious due to breaking down The phenomenon shown can be consistent with check plot, therefore is referred to check plot, contrast left side detection zone, confirms the address wire of failure, and A plurality of address wire breaks down, then need to contrast block check plot and block detection zone by permutation and combination, and only image is more multiple It is miscellaneous, in addition data wire may be influenceed to detect when there is block load fault, data wire detection zone may be by block load fault Covered.

It is graph card shows when open circuit fault occurs in Article 2 address wire phenomenon, from fig. 9, it can be seen that block is examined referring to Fig. 9 Survey in area that grey block is consistent with the arrangement mode of black patch with 2 disconnected lower ash blocks in check plot 2 with the arrangement mode of black patch, show phenomenon from On be successively down：Two black patches, two grey blocks, two black patches, two grey blocks, two black patches, two grey blocks, two black patches, One grey block, so as to judge it is that Article 2 address wire occurs open circuit fault, as can be seen from Figure 9, Article 2 address wire breaks down When, the phenomenon of Article 2 failure can be extended to whole graph card, the i.e. completely black place of block detection zone, and corresponding row shows completely black.

Explanation is needed, in the graph card shown in Fig. 8,4 block check plots is listed and is occurred breaking for each address wire Phenomenon when road and short trouble shown, when detecting which bar address wire breaks down, can be by by block detection zone Phenomenon is compareed with block check plot, it is determined that being which bar address wire occurs in that failure.

When a plurality of address wire breaks down, according to permutation and combination, there will be 16 kinds of combinations (by DMD in row side in this citing It is divided into 15 pieces upwards, therefore is illustrated according to situation about combining in 15), if a plurality of address wire breaks down, can be right respectively Than every short-circuit or breaking check plot of address wire determining being which a plurality of address wire breaks down.Therefore, the graph card both may be used To detect single address line failure, it is also possible to detect a plurality of address alignment fault.

When the resolution ratio of DMD is other resolution ratio, together decided on out by the number n and horizontal pixel point number of data channel The bar number of vertical line during existing data wire failure, so that the resolution ratio of DMD is as 1920*1080 as an example, its data channel is 32, horizontal picture Vegetarian refreshments number is 1920, then the bar number of vertical line when there is data wire failure is 1920/32=60；Block number and longitudinal pixel Number determines the width of block, still so that the resolution ratio of DMD is as 1920*1080 as an example, is divided into 15 pieces according to the above embodiments, then often The width of individual block is 1080/15=72.

From the above embodiments as can be seen that aiding in quick positioning in the embodiment of the present invention using specific test pattern The data fault of DMD, it is more directly perceived that this detection method causes phenomenon of the failure to show, improves detection accuracy, and can be with Quick positioning location of fault and type, have saved trouble shooting time.

It is that provided in an embodiment of the present invention both address alignment fault can also be detected with detection data line failure referring to Figure 10 Graph card schematic diagram.

As shown in Figure 10, the resolution ratio of the graph card is 1920*1080, and 32 data wire fault detect areas, 1 are divided into altogether Block detection zone, 4 block check plots (block check plot 1 to block check plot 4).Wherein, 32 work in data wire fault detect area are former Reason is identical with the operation principle of the graph card shown in Fig. 2, to the specific of each detection zone and data cell therein and detection line Description can be found in the above-mentioned associated description to Fig. 3,1 block detection zone and 4 operation principles of block check plot and the figure shown in Fig. 7 The operation principle of card is identical, specifically, reference can be made to above-mentioned associated description, specific introduction is not done herein.

When detecting the data fault of DMD with the graph card shown in Figure 10, likewise, being input into the graph card as picture material DMD shown, according to the phenomenon that the graph card shows, it can be determined that the type of failure, judges data wire failure and address The method and principle of line failure are consistent with Fig. 3 and Fig. 8, do not make a concrete explanation herein.

Referring to Figure 11, graph card shows when being the open circuit of data channel provided in an embodiment of the present invention 5, the open circuit of Article 2 address wire It is intended to.

As shown in figure 11, the graph card is similar to the graph card shown in Figure 10, and 32 vertical line fault detect areas, 1 are divided into altogether Block detection zone, 4 block check plots.Wherein, 32 operation principles in vertical line fault detect area are former with the work of the graph card shown in Fig. 2 Reason is identical, each detection zone and data cell therein can be found in the specific descriptions of detection line above-mentioned to the related of Fig. 3 Description, 1 block detection zone and 4 operation principles of block check plot are identical with the operation principle of the graph card shown in Fig. 7, specifically, Reference can be made to above-mentioned associated description, specific introduction is not done herein.

When detecting the data fault of DMD, likewise, shown the graph card as picture material input DMD, according to this The phenomenon that graph card shows, it can be determined that the type of failure, and quickly position location of fault.

Such as, as shown in figure 11, the phenomenon of the display of block detection zone is that the arrangement mode of block is successively from top to bottom：Two Individual black patch, two grey blocks, two black patches, two grey blocks, two black patches, two grey blocks, two black patches, a grey blocks, and block are examined Survey area and show that completely black row correspondence display is completely black, and detection zone 5 shows complete white.Be may determine that according to the phenomenon, the data event of DMD Hinder and be：5th data channel open circuit, the open circuit of Article 2 address wire.

In the above embodiment of the present invention, receiving screen will be projected to for the graph card of fault detect using DMD, received Second image of screen display；Wherein, N number of data wire fault detect area is included in graph card, an address wire detection zone and Q are individual Check plot, comprising one or more there are N data to lead in each data wire fault detect area in N number of data wire fault detect area The data cell for detection data line failure in road, N data channel is corresponded with the N data lines of the DMD, each It is used to detect number for including a detection line in the data cell of detection data line failure, in each data wire fault detect area According to differing for the data channel corresponding to the detection line in the data cell of line failure and other data wire fault detect areas, N It is the integer more than or equal to 1, Q check plot is corresponded with the Q bars address wire of DMD, and the image of each check plot is compareed with this The imaging results of the corresponding address wire in area image of address wire detection zone when breaking down are identical；By the second image with it is described Graph card is compared, and positions the data fault of DMD.Because DMD is in display, the mode scanned according to N data channel row is suitable Sequence writes the caching of DMD, then is shown by the Q bar address wire controlled loadings of DMD, in the scheme that the present invention is provided, at each It is used for one detection line of mark in N data channel of the data cell of detection data line failure in data wire fault detect area, When the data wire occurs specific fault, the detection line will occur corresponding color change, so as to location data line failure；Root Corresponding Q block check plot is designed according to Q bars address wire, the image of each check plot address wire corresponding with the check plot occurs event The imaging results of the image of address wire detection zone are identical during barrier, therefore address wire detection zone and Q check plot are compared, real Positioning address line failure is showed.

Based on identical technology design, the embodiment of the invention provides detection data line failure and detect address alignment fault Equipment and system.

It is the apparatus structure schematic diagram of fault test set provided in an embodiment of the present invention referring to Figure 12.

As shown in figure 12, the fault test set includes：Acquisition module 1201, detection module 1202.

Acquisition module 1201, for obtaining the second image obtained by projector equipment is projected to the first image；Wherein, N number of data wire fault detect area, an address wire detection zone and Q check plot, N number of number are included in described first image According in each data wire fault detect area in line fault detect area comprising one or more have N data channel for detecting The data cell of data wire failure, the N data channel is corresponded with the N data lines of the DMD of the projector equipment, often A detection line is included in the individual data cell for detection data line failure, is used to detect in each data wire fault detect area Data channel corresponding to detection line in the data cell of data wire failure is differed with other data wire fault detect areas, N is the integer more than or equal to 1, and the Q check plot corresponds with the Q bars address wire of the DMD, the image of each check plot The imaging results of address wire corresponding with check plot image of address wire detection zone when breaking down are identical；

Detection module 1202, for according to the difference between described first image and second image, positioning the DMD Data fault.

Alternatively, the detection module 1202 specifically for：

Alternatively, the detection module 1202 is specifically additionally operable to：

Alternatively, the detection module is specifically additionally operable to：

It is that one kind provided in an embodiment of the present invention both can also detect address wire with detection data line failure referring to Figure 13 The system schematic of failure.

Referring to Figure 13, the system includes：Projector equipment 1101 and fault test set 1102.

Include the projector equipment 1101 of DMD, for receiving screen will to be projected to for the graph card of fault detect, obtain described Receive the second image of screen display；Wherein, N number of data wire fault detect area, an address wire detection are included in the graph card Area and Q check plot, one or more are included in each data wire fault detect area in N number of data wire fault detect area With the N data cell for detection data line failure of data channel, the N bar numbers of the N data channel and the DMD Corresponded according to line, each is used to include a detection line, each data wire failure in the data cell of detection data line failure For the data channel corresponding to the detection line in the data cell of detection data line failure and the event of other data wires in detection zone Barrier detection zone is differed, and N is the integer more than or equal to 1, a pair of the Q bars address wire one of the Q check plot and the DMD Should, when the image of each check plot address wire corresponding with the check plot breaks down the image of the address wire detection zone into As result is identical；

Fault test set 1102, for second image and the graph card to be compared, positions the number of the DMD According to failure.

Alternatively, the fault test set is used for：

If the detection line in k-th data wire fault detect area in second image, with respective counts in the graph card According to there is display difference between the detection line in fault detect area, then according to being used in the k-th data fault detection zone The data channel corresponding to detection line in the data cell of detection data line failure, determines the corresponding data wire of the data channel Failure, K is the integer more than or equal to 1 and less than or equal to N；

Alternatively, the fault test set specifically for：

Alternatively, in the graph card, the data channel corresponding to detection line in each data wire fault detect area is the One color, the color of other data channel is the second color, and first color and second color are differed；Or,

In the graph card, the data cell that detection data line failure is used in each data wire fault detect area is divided into Part I and Part II, wherein：

Alternatively, the resolution ratio of the graph card is equal to the resolution ratio of the DMD.

Alternatively, the fault test set specifically for：

In above-described embodiment, when fault test set carries out fault location to DMD, it may include following several ways：

Mode 1：There is the device with camera function on fault test set, the device can show projection The second image on to receiving screen is imaged, after such fault test set obtains the second image, it is possible to by the first image It is compared with the second image, positions the data fault of DMD, wherein, the first image can be stored in advance in fault test set On, it is also possible to fault test set is sent to by other-end when DMD data faults are detected.

Mode 2：Projector equipment sends the second image in Projection Display to receiving screen to fault test set, failure inspection After measurement equipment obtains the second image, it is possible to be compared the first image and the second image, the data fault of DMD is positioned.

Mode 3：The second image on receiving screen is imaged by other-end, the image that then will be photographed is transmitted to Fault test set, after fault test set obtains the image of the terminal taking, it is possible to carry out the image and the first image Compare, position the data fault of DMD.

The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product Figure and/or block diagram are described.It should be understood that every first-class during flow chart and/or block diagram can be realized by computer program instructions The combination of flow and/or square frame in journey and/or square frame and flow chart and/or block diagram.These computer programs can be provided The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce A raw machine so that produced for reality by the instruction of computer or the computing device of other programmable data processing devices The device of the function of being specified in present one flow of flow chart or multiple one square frame of flow and/or block diagram or multiple square frames.

These computer program instructions may be alternatively stored in can guide computer or other programmable data processing devices with spy In determining the computer-readable memory that mode works so that instruction of the storage in the computer-readable memory is produced and include finger Make the manufacture of device, the command device realize in one flow of flow chart or multiple one square frame of flow and/or block diagram or The function of being specified in multiple square frames.

These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented treatment, so as in computer or The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one The step of function of being specified in individual square frame or multiple square frames.

, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent Select embodiment and fall into having altered and changing for the scope of the invention.

Obviously, those skilled in the art can carry out various changes and modification without deviating from essence of the invention to the present invention God and scope.So, if these modifications of the invention and modification belong to the scope of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to comprising these changes and modification.

Claims

1. a kind of digital micromirror elements DMD data fault detection methods, it is characterised in that including：

Projector equipment obtains the second figure of the reception screen display by for the first image projection of fault detect to receiving screen Picture；Wherein, N number of data wire fault detect area, an address wire detection zone and Q check plot are included in described first image, There is N data channel comprising one or more in each data wire fault detect area in N number of data wire fault detect area The data cell for detection data line failure, the N datas of the DMD in the N data channel and the projector equipment Line is corresponded, and each is used to include a detection line in the data cell of detection data line failure, the inspection of each data wire failure Survey in area for the data channel corresponding to the detection line in the data cell of detection data line failure and other data wire failures Detection zone is differed, and N is the integer more than or equal to 1, and the Q check plot corresponds with the Q bars address wire of the DMD, The imaging of the image of the address wire detection zone when image of each check plot address wire corresponding with the check plot breaks down Result is identical；

2. the method for claim 1, it is characterised in that described according between second image and described first image Difference, position the data fault of the DMD, including：

If the detection line in k-th data wire fault detect area in second image, with respective counts in described first image According to there is display difference between the detection line in fault detect area, then according to being used in the k-th data fault detection zone The data channel corresponding to detection line in the data cell of detection data line failure, determines the corresponding data wire of the data channel Failure, K is the integer more than or equal to 1 and less than or equal to N；And/or

If in the k-th check plot in the image in address wire detection zone in second image, with second image Image is identical, it is determined that the address alignment fault corresponding to the k-th check plot, K is the integer more than or equal to 1 and less than Q.

3. method as claimed in claim 2, it is characterised in that if the k-th data wire fault detect in second image Detection line in area is shown as the color shown during corresponding data line open circuit fault, then examined according to the k-th data fault The data channel corresponding to detection line in the data cell for detection data line failure surveyed in area, determines the data channel There is open circuit fault in corresponding data wire；Or,

If the detection line in k-th data wire fault detect area in second image is shown as the short circuit event of corresponding data line The color shown during barrier, then according to the data cell for detection data line failure in the k-th data fault detection zone In detection line corresponding to data channel, determine that the corresponding data wire of the data channel is short-circuited failure.

4. method as claimed any one in claims 1 to 3, it is characterised in that in described first image, each data wire therefore The data channel corresponding to detection line in barrier detection zone is the first color, and the color of other data channel is the second color, institute State the first color and second color is differed；Or,

In described first image, the data cell that detection data line failure is used in each data wire fault detect area is divided into Part I and Part II, wherein：

The data channel corresponding to detection line in Part I data cell is the first color, and the color of other data channel is Second color, first color and second color are differed, when second color is data channel open circuit fault Color；

The data channel corresponding to detection line in Part II data cell is the 3rd color, and the color of other data channel is 4th color, the 3rd color and the 4th color are differed, when the 4th color is data channel short trouble Color.

5. the method for claim 1, it is characterised in that be used for detection data line failure in data wire fault detect area Data cell, is all or part data cell included in the data wire fault detect area.

6. the method for claim 1, it is characterised in that be used for detection data line failure in data wire fault detect area The numbering of the data channel corresponding to detection line in data cell, the numbering with the data wire fault detect area is identical.

7. the method for claim 1, it is characterised in that the resolution ratio of described first image is equal to the resolution of the DMD Rate.

8. method as claimed in claim 2, it is characterised in that each check plot includes open circuit fault check plot and/or short Road failure check plot；

There is address during open circuit fault in the address wire corresponding to the image of the open circuit fault check plot and place check plot The imaging results of the image of line detection zone are identical；

The image of the short trouble check plot and the address wire corresponding to the check plot of place be short-circuited failure when the address The imaging results of the image of line detection zone are identical.

9. method as claimed in claim 2, it is characterised in that if the figure in address wire detection zone in second image Picture, the image with the short trouble check plot in the k-th check plot in second image is identical, it is determined that the k-th Address wire corresponding to check plot is short-circuited failure；Or,

If in the k-th check plot in the image in address wire detection zone in second image, with second image The image of open circuit fault check plot is identical, it is determined that the address wire corresponding to the k-th check plot occurs open circuit fault.

10. the method for claim 1, it is characterised in that the address wire detection zone includes 2^QIndividual block, each block makes The Q bit address exported with the Q bars address wire is identified, and two neighboring piece of color is different.

A kind of 11. digital micromirror elements DMD data fault testing equipments, it is characterised in that including：

Acquisition module, for obtaining the second image obtained by projector equipment is projected to the first image；Wherein, described first N number of data wire fault detect area, an address wire detection zone and Q check plot, N number of data wire failure are included in image In each data wire fault detect area of detection zone comprising one or more have N data channel for detection data line therefore The data cell of barrier, the N data channel is corresponded with the N data lines of the DMD of the projector equipment, and each is used to examine Survey and a detection line is included in the data cell of data wire failure, the event of detection data line is used in each data wire fault detect area Data channel corresponding to detection line in the data cell of barrier is differed with other data wire fault detect areas, N be more than Integer equal to 1, the Q check plot corresponds with the Q bars address wire of the DMD, image and this pair of each check plot The imaging results of the image of the address wire detection zone are identical when being broken down according to the corresponding address wire in area；

Detection module, for according to the difference between described first image and second image, positioning the data event of the DMD Barrier.

12. equipment as claimed in claim 11, it is characterised in that the detection module specifically for：

13. equipment as claimed in claim 12, it is characterised in that the detection module is specifically additionally operable to：

If the detection line in k-th data wire fault detect area in second image is shown as the open circuit event of corresponding data line The color shown during barrier, then according to the data cell for detection data line failure in the k-th data fault detection zone In detection line corresponding to data channel, determine that the corresponding data wire of the data channel occurs open circuit fault；Or,

14. equipment as claimed in claim 12, it is characterised in that each check plot include open circuit fault check plot and/or Short trouble check plot；

15. equipment as claimed in claim 12, it is characterised in that the detection module is specifically additionally operable to：

If in the k-th check plot in the image in address wire detection zone in second image, with second image The image of short trouble check plot is identical, it is determined that the address wire corresponding to the k-th check plot is short-circuited failure；Or Person,

A kind of 16. digital micromirror elements DMD data fault detecting systems, it is characterised in that including：

Include the projector equipment of DMD, for by for the first image projection of fault detect to receiving screen；Wherein, described N number of data wire fault detect area, an address wire detection zone and Q check plot, N number of data wire event are included in one image Hinder in each data wire fault detect area of detection zone comprising one or more have N data channel for detection data line The data cell of failure, the N data channel is corresponded with the N data lines of the DMD, and each is used for detection data line A detection line is included in the data cell of failure, the data of detection data line failure are used in each data wire fault detect area Data channel corresponding to detection line in unit is differed with other data wire fault detect areas, and N is whole more than or equal to 1 Number, the Q check plot corresponds with the Q bars address wire of the DMD, and the image of each check plot is corresponding with the check plot The imaging results of the image of the address wire detection zone are identical when address wire breaks down；

Fault test set, the second image for obtaining the reception screen display, and by second image and described the One image is compared, and positions the data fault of the DMD.

17. systems as claimed in claim 16, it is characterised in that the fault test set specifically for：

18. systems as claimed in claim 17, it is characterised in that the fault test set specifically for：

19. system as any one of claim 16 to 18, it is characterised in that in described first image, each data The data channel corresponding to detection line in line fault detect area is the first color, and the color of other data channel is the second face Color, first color and second color are differed；Or,

20. systems as claimed in claim 17, it is characterised in that each check plot include open circuit fault check plot and/or Short trouble check plot；

21. systems as claimed in claim 17, it is characterised in that the fault test set specifically for：

22. systems as claimed in claim 16, it is characterised in that the address wire detection zone includes 2^QIndividual block, each block makes The Q bit address exported with the Q bars address wire is identified, and two neighboring piece of color is different.