CN105741718A - LED pixel screen system having feedback function - Google Patents
LED pixel screen system having feedback function Download PDFInfo
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- CN105741718A CN105741718A CN201610171741.5A CN201610171741A CN105741718A CN 105741718 A CN105741718 A CN 105741718A CN 201610171741 A CN201610171741 A CN 201610171741A CN 105741718 A CN105741718 A CN 105741718A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
Abstract
The application discloses an LED pixel screen system having a feedback function. The LED pixel screen system comprises an LED pixel screen, a central processor, a drive module circuit and a feedback circuit; the drive module circuit is connected between the central processor and the LED pixel screen, and the drive module circuit is managed by the central processor and performs light-on and/or light-off control on LED chips formed through arrangement of multiple dot matrixes on the LED pixel screen; and the feedback circuit is connected between the central processor and the LED pixel screen, and the feedback circuit is used to acquire actual display data of the multiple LED chips and transmit the acquired actual display data to the central processor so that the central processor performs XOR operation on the actual display data and preset display data on the LED pixel screen and then obtains an LED chip having a display abnormity on the LED pixel screen, wherein the preset display data comprises preset light-on data and preset light-off data. The LED pixel screen system of the application solves the technical problem of how to accurately determine a specific position of an LED module having a display abnormity in the LED pixel screen.
Description
Technical field
The application relates to LED lamplight control field, is specifically related to a kind of LED pixel screen system with feedback function.
Background technology
LED pixel screen and LED display (LEDdisplay) are a kind of flat faced display, are made up of LED module panel little one by one, are generally used to the various information such as display word, image, video, video signal.LED and light emitting diode (lightemittingdiode), it is a kind of display mode by controlling semiconductor light-emitting-diode, by gallium (Ga) and arsenic (As), phosphorus (P), nitrogen (N), indium (In) the diode made of compound, visible ray can be given off when electronics and hole-recombination, thus can be used to make light emitting diode.As display lamp in circuit and instrument, or form word or numerical monitor.Gallium arsenide phosphide diode glows, gallium phosphide diode green light, silicon carbide diode Yellow light-emitting low temperature, indium gallium nitrogen diode blue light-emitting.
The LED pixel screen of present stage is typically all by the processor management to drive circuit, it is achieved the drive circuit control lighted or extinguish to multiple LED modules, and then presents default word, image, video, video signal etc..But LED pixel screen is in the process used, if one or more LED module occurs to demonstrate default word when display is abnormal, image, video, video signal, LED pixel screen is caused to lose its this display effect of having, but when maintenance or replacing LED module, it is in security consideration to be typically necessary LED pixel screen is carried out power-off, and after power-off, show the LED module no difference in appearance of abnormal LED module and normal display, particularly when large-area LED module uses, substantial amounts of LED module cannot find LED module that display is abnormal accurately, bring very big trouble to maintenance or replacing work.
Therefore, how accurately to determine that the particular location showing abnormal LED module in LED pixel screen is those skilled in the art's technical problems urgently to be resolved hurrily.
Summary of the invention
The purpose of the application is in that to provide a kind of LED pixel screen system with feedback function, increase by a feedback circuit by the LED pixel screen in present stage, the actual displayed data of LED chip it is acquired and is carried out by the default video data of described actual displayed data Yu described LED pixel screen XOR and then obtains in described LED pixel screen and show abnormal LED chip, addressing how accurately to determine the technical problem of the particular location showing abnormal LED module in LED pixel screen.
In order to solve above-mentioned technical problem, this application provides a kind of LED pixel screen system with feedback function, including LED pixel screen, central processing unit and driving modular circuit, described driving modular circuit is connected between described central processing unit and described LED pixel screen, described driving modular circuit accepts the management of described central processing unit, and the LED chip of multiple dot matrix arrangement on described LED pixel screen is lighted and/or extinguishes control；Also include feedback circuit, described feedback circuit is connected between described central processing unit and described LED pixel screen, described feedback circuit is for being acquired the actual displayed data of multiple described LED chips, and the described actual displayed data collected are sent to described central processing unit, for described central processing unit, the default video data of described actual displayed data Yu described LED pixel screen carried out XOR and then obtain in described LED pixel screen and show abnormal LED chip, wherein, described default video data includes presetting to be lighted data and presets extinguishing data.
Further, described feedback circuit is for when described driving modular circuit lights described LED pixel screen, the actual displayed data of multiple described LED chips are acquired, and the described actual displayed data collected are sent to described central processing unit, for described central processing unit, described actual displayed data are lighted data carry out XOR with described presetting and then obtain in described LED pixel screen and show abnormal LED chip.
Further, described feedback circuit is for when described driving modular circuit extinguishes described LED pixel screen, the actual displayed data of multiple described LED chips are acquired, and the described actual displayed data collected are sent to described central processing unit, for described central processing unit, described actual displayed data and described default extinguishing data carried out XOR and then obtain in described LED pixel screen and show abnormal LED chip.
Further, described LED pixel screen system also includes LCD display module, and described LCD display module is connected to described central processing unit, and described LCD display module is for displaying the duty of described central processing unit.
Further, described central processing unit is additionally operable to the LED chip the calculating described display exception particular location at described LED pixel screen.
Further, described LCD display module is additionally operable to the LED chip the showing described display exception particular location at described LED pixel screen.
Further, described LED pixel screen system also includes JTAG DLL module, and described JTAG DLL module is connected to described central processing unit, for described central processing unit is tested and upgrade maintenance.
Further, described driving modular circuit includes row cutting modular circuit and row drive modular circuit, described row cutting modular circuit and described row drive modular circuit to accept the management of described central processing unit, control lighting and/or extinguishing of each described LED chip, with at described LED pixel screen display pre-set image and/or word.
Further, described feedback circuit includes row feedback circuit and row feedback circuit, described row feedback circuit and described row feedback circuit are respectively used to the actual displayed data of multiple described LED chips are acquired, and the described actual displayed data collected are sent to described central processing unit, for described central processing unit, the default video data of described actual displayed data Yu described LED pixel screen carried out XOR and then obtain in described LED pixel screen and show abnormal LED chip.
Further, described LED pixel screen system also includes power module, and described power module is connected to described central processing unit and described LED pixel screen, for providing electric energy support to described central processing unit and described LED pixel screen.
Compared with prior art, the application can obtain and include techniques below effect:
A kind of LED pixel screen system with feedback function provided herein, increase by a feedback circuit by the LED pixel screen in present stage, the actual displayed data of LED chip are acquired and are carried out by the default video data of described actual displayed data Yu described LED pixel screen XOR and then obtain in described LED pixel screen and show abnormal LED chip by described feedback circuit, address how accurately to determine the technical problem of the particular location showing abnormal LED module in LED pixel screen, and then the LED module of display exception can be found in substantial amounts of LED module accurately, offer convenience to maintenance or replacing work, promote the experience of LED pixel screen.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing further understanding of the present application, constitutes the part of the application, and the schematic description and description of the application is used for explaining the application, is not intended that the improper restriction to the application.In the accompanying drawings:
Fig. 1 is a block diagram of the LED pixel screen system with feedback function that the application first embodiment discloses；
Fig. 2 is the another block diagram of the LED pixel screen system with feedback function that the application first embodiment discloses；
Fig. 3 is a block diagram of the LED pixel screen system with feedback function that the application the second embodiment discloses；
Fig. 4 is the another block diagram of the LED pixel screen system with feedback function that the application the second embodiment discloses；
Fig. 5 is the another block diagram of the LED pixel screen system with feedback function that the application the second embodiment discloses.
Detailed description of the invention
Describe presently filed embodiment in detail below in conjunction with drawings and Examples, thereby the application how application technology means are solved technical problem and reaches the process that realizes of technology effect and can fully understand and implement according to this.
As employed some vocabulary in the middle of description and claim to censure specific components.Those skilled in the art are it is to be appreciated that hardware manufacturer may call same assembly with different nouns.This specification and claims are not used as distinguishing in the way of assembly by the difference of title, but are used as the criterion distinguished with assembly difference functionally." comprising " as mentioned in the middle of description and claim in the whole text is an open language, therefore should be construed to " comprise but be not limited to "." substantially " referring in receivable range of error, those skilled in the art can solve described technical problem within the scope of certain error, basically reaches described technique effect.Additionally, " coupling " or " electric connection " word comprises any directly and indirectly electric property coupling means at this.Therefore, if a first device described in literary composition is coupled to one second device, then represents described first device and can directly be electrically coupled to described second device, or be indirectly electrically coupled to described second device by other device or the means that couple.Description subsequent descriptions is implement the better embodiment of the application, and right described description is for the purpose of the rule so that the application to be described, is not limited to scope of the present application.The protection domain of the application is when being as the criterion depending on the defined person of claims.
It can further be stated that, term " includes ", " comprising " or its other variant any are intended to comprising of nonexcludability, so that include the process of a series of key element, method, commodity or system not only include those key elements, but also include other key element being not expressly set out, or also include the key element intrinsic for this process, method, commodity or system.When there is no more restriction, statement " including ... " key element limited, it is not excluded that there is also other identical element in including the process of described key element, method, commodity or system.
Embodiment describes
The LED pixel screen system with feedback function provided herein, increase by a feedback circuit by the LED pixel screen in present stage, the actual displayed data of LED chip are acquired and are carried out by the default video data of described actual displayed data Yu described LED pixel screen XOR and then obtains in described LED pixel screen and show abnormal LED chip, namely in substantial amounts of LED module, find the LED module that display is abnormal accurately, offer convenience to maintenance or replacing work, promote the experience of LED pixel screen.
Embodiment 1
Refer to Fig. 1, a block diagram for a kind of LED pixel screen system with feedback function that the embodiment of the present application 1 discloses, described LED pixel screen system 10 can be used for the display screen of exploitation, can show word, image, video, video signal etc. thereon.Described LED pixel screen system 10 includes LED pixel screen 110, central processing unit 120, drives modular circuit 130 and feedback circuit 140.
Wherein, described driving modular circuit 130 is connected between described central processing unit 120 and described LED pixel screen 110, described driving modular circuit 130 accepts the management of described central processing unit 120, and the LED chip of multiple dot matrix arrangement on described LED pixel screen 110 is lighted and/or extinguishes control.Here, on described LED pixel screen 110, the LED chip of multiple dot matrix arrangement is not light simultaneously or extinguish, reason with described LED pixel screen 110 on present word, image, video, video signal etc., its gesture part when normal operation lights part extinguishing, presents default word, image, video, video signal etc. thereby through the boundary of light and shade.Described feedback circuit 140 is connected between described central processing unit 120 and described LED pixel screen 110, described feedback circuit 140 is for being acquired the actual displayed data of multiple described LED chips, and the described actual displayed data collected are sent to described central processing unit 120, for described central processing unit 120, the default video data of described actual displayed data Yu described LED pixel screen 110 carried out XOR and then obtain in described LED pixel screen 110 and show abnormal LED chip, wherein, described default video data includes presetting to be lighted data and presets extinguishing data.
Here, described feedback circuit 140 is for when described driving modular circuit 130 lights described LED pixel screen 110, the actual displayed data of multiple described LED chips 110 are acquired, and the described actual displayed data collected are sent to described central processing unit 120, for described central processing unit 120, described actual displayed data are lighted data carry out XOR with described presetting and then obtain in described LED pixel screen 110 and show abnormal LED chip.
Or, described feedback circuit 140 is for when described driving modular circuit 130 extinguishes described LED pixel screen 110, the actual displayed data of multiple described LED chips 110 are acquired, and the described actual displayed data collected are sent to described central processing unit 120, for described central processing unit 120, described actual displayed data and described default extinguishing data carried out XOR and then obtain in described LED pixel screen 110 and show abnormal LED chip.
Specifically, in two kinds of situation the working mechanism of described feedback circuit 140 is described in detail below:
The first, when described LED pixel screen 110 is all lighted, the actual displayed data that described feedback circuit 140 collects described LED pixel screen 110 are as shown in table 1 below:
Table 1
And storage described presets that to light data as shown in table 2 below in described central processing unit 120:
Table 2
Wherein, in above-mentioned table 1 and table 2, " 1 " represents LED chip and is lit, " 0 " represents that LED chip is by an extinguishing, as described in central processing unit 120 preset as described in storage light data for all " 1 ", because new described LED pixel 110 is generally intact, namely all of LED chip all can be lit.Described XOR refers to the default video data to described actual displayed data Yu described LED pixel screen and compares, as the data of above-mentioned table 1 and table 2 are compared, it appeared that C row the 2nd row in table 1 and the data in B row the 5th row occur abnormal, namely show that the LED chip display of C row the 2nd row and B row the 5th row is abnormal, namely show that described LED chip is likely to be to break down, it is necessary to carry out timely keeping in repair and changing.
The second, when described LED pixel screen 110 is all extinguished, the actual displayed data that described feedback circuit 140 collects described LED pixel screen 110 are as shown in table 3 below:
Table 3
And the described default extinguishing data of storage are as shown in table 4 below in described central processing unit 120:
Table 4
Wherein, in above-mentioned table 3 and table 4, " 1 " represents LED chip and is lit, " 0 " represents that LED chip is by an extinguishing, as described in central processing unit 120 presets as described in storage to extinguish data be whole " 0 ", because new described LED pixel 110 is generally intact, namely all of LED chip should all not work when extinguishing described LED pixel 110.Described XOR refers to the default video data to described actual displayed data Yu described LED pixel screen and compares, as the data of above-mentioned table 3 and table 4 are compared, it appeared that B row the 2nd, 6 row in table 3 and the data in C row the 4th row occur abnormal, namely show that the LED chip display of B row the 2nd, 6 row and C row the 4th row is abnormal, namely show that described LED chip is likely to be to break down, it is necessary to carry out timely keeping in repair and changing.
It should be noted that; the method (light or extinguish) of the actual displayed data that two kinds provided in the present embodiment obtain described LED chip may serve to detect the LED chip of the abnormal show in described LED pixel screen 110; a kind of method can be selected in actual applications as required; certainly both can also be combined with each other; to ensure to detect the accuracy rate of the LED chip of the abnormal show in described LED pixel screen 110, certain above method does not constitute limiting the scope of the present invention yet.
In the present embodiment, described LED pixel screen 110 is the description carrying out example character with 18 (3*6) individual LED chip, it is not intended that the restriction of the scale of the described LED pixel screen 110 to the present invention, it is conceivable that all big small-scale described LED pixel screens 110 are all applicable.
In the selection of described central processing unit 120 can but be not limited to Cortex-M3, it is 32 bit processor kernels.Internal data path is 32, and depositor is 32, and memory interface is also 32.CM3 have employed Harvard structure, has independent instruction bus and data/address bus, it is possible to allows fetching be integrated with nested vector interrupt controller (NVIC) first on kernel with data access parallel C ortex-M3.The interruption delay of Cortex-M3 only has 12 clock cycle (ARM7 needs 24-42 cycle)；Cortex-M3 also uses tail chain technology so that the response that (back-to-back) interrupts has only to 6 clock cycle.
It addition, refer to Fig. 2, for the another block diagram of a kind of LED pixel screen system with feedback function that the embodiment of the present application 1 discloses.Described driving modular circuit 130 includes row cutting modular circuit 131 and row drive modular circuit 132, described row cutting modular circuit 131 and described row drive the management that modular circuit 132 accepts described central processing unit 120, control lighting and/or extinguishing of each described LED chip, to show pre-set image and/or word on described LED pixel screen 110；Described feedback circuit 140 includes row feedback circuit 141 and row feedback circuit 142, described row feedback circuit 141 and described row feedback circuit 142 are respectively used to the actual displayed data of multiple described LED chips are acquired, and the described actual displayed data collected are sent to described central processing unit 120, for described central processing unit 120, the default video data of described actual displayed data Yu described LED pixel screen 110 carried out XOR and then obtain in described LED pixel screen 110 and show abnormal LED chip.
Wherein, the selection of described row cutting modular circuit 131 can include, but are not limited to as 74HC164.Described 74HC164 is high-speed silicon door cmos device, with the pin compatibility of low-power consumption Schottky type TTL (LSTTL) device.74HC164 is 8 edge trigger shift registers, serial input data, then parallel output.Data are by one of two inputs (DSA or DSB) serial input；Arbitrary input can serve as high level Enable Pin, controls the data input of another input.Two inputs or link together, or no input termination high level, unsettled scarcely.
Drive at described row and the selection of modular circuit 132 can include, but are not limited to as M74HC595.Described M74HC595 has 8 bit shift register and a memorizer, ternary output function.Shift register and memorizer are clocks respectively.Data input at the rising edge of SCHcp, in the memory register that the rising edge of STcp enters.If two clocks connect together, then a shift register always Zao pulse than memory register.Shift register has serial shift input (Ds), with a Serial output (Q7 '), the low level asynchronous with one resets, memory register has one parallel 8, possesses the bus output of tri-state, when enabling OE (for low level), the data of memory register export bus.
And, the selection of described feedback circuit 140 (including described row feedback circuit 141 and described row feedback circuit 142) can include, but are not limited to as ADC0809.Described ADC0809 is the cmos component of the control logic compatible with 8 A/D converters, No. 8 variable connectors and microprocessor.It is successive approximation type a/d converter, it is possible to directly connect with Cortex-M3.Described ADC0809 is made up of with decoder, an A/D converter and a ternary output latch 8 path analoging switch, an address latch.Variable connector can 8 analog channels of gating, it is allowed to 8 tunnel analog quantity timesharing inputs, shared A/D converter is changed.Ternary output lock device, for latching the A/D digital quantity converted, when OE end is high level, just can take the data converted away from ternary output latch.
The actual displayed data of LED chip are acquired and are carried out by the default video data of described actual displayed data Yu described LED pixel screen 110 XOR and then obtain in described LED pixel screen 110 and show abnormal LED chip by feedback circuit 140 described in the embodiment of the present application, address how accurately to determine the technical problem of the particular location showing abnormal LED module in LED pixel screen 110, and then the LED module of display exception can be found in substantial amounts of LED module accurately, offer convenience to maintenance or replacing work, promote the experience of described LED pixel screen 110.
Embodiment 2
Refer to Fig. 3, for a block diagram of a kind of LED pixel screen system with feedback function that the embodiment of the present application 2 discloses, the present embodiment is on the basis of embodiment 1, and described LED pixel screen system 10 still further comprises JTAG DLL module 150.
Described JTAG DLL module 150 is connected to described central processing unit 120, for described central processing unit 120 is tested and upgrade maintenance.
Here, master chip with described central processing unit 120 mainly tested by described JTAG DLL module 150, safeguard and upgrading etc., to ensure that described central processing unit 120 has good performance, promote the experience of described LED pixel screen 110 further.
Refer to Fig. 4, another block diagram for a kind of LED pixel screen system with feedback function that the embodiment of the present application 2 discloses, in other preferred embodiments of the application, described LED pixel screen system 10 still further comprises LCD display module 160, described LCD display module 160 is connected to described central processing unit 120, and described LCD display module 160 is for displaying the duty of described central processing unit 120.
Further, described central processing unit 120 is additionally operable to the LED chip the calculating described display exception particular location at described LED pixel screen 110；And described LCD display module 160 is additionally operable to show the described display abnormal LED chip particular location at described LED pixel screen 110.
Here, described LCD display module 160 is the display screen of a LCD, for showing the duty of described central processing unit 120 in real time, as described LED pixel screen 110 is showing default word, image, video, video signal content etc., and it is also possible that state particular location (the B row the 2nd as above of the LED chip of the described display exception that central processing unit 120 calculates, 6 row and C row the 4th row etc.) it is shown on described LCD display screen, so that staff's perception in time, and then notify that relevant staff carries out changing timely or maintenance, promote the experience of described LED pixel screen 110 further.
Additionally, refer to Fig. 5, another block diagram for a kind of LED pixel screen system with feedback function that the embodiment of the present application 2 discloses, described LED pixel screen system 10 still further comprises power module 170, described power module 170 is connected to described central processing unit 120 and described LED pixel screen 110, for providing electric energy support to described central processing unit 120 and described LED pixel screen 110.
Here, in the present embodiment, illustrate with a described power module 170, but it is not intended that limiting the scope of the invention, it is envisioned that described central processing unit 120 and described LED pixel screen 110 are powered, the form that can be considered as dual-power module is powered, and in actual application, due to described central processing unit 120 it is generally required to relatively low voltage as well, described LED pixel screen 110 then needs normal line voltage, therefore preferably situation is that described central processing unit 120 and described LED pixel screen 110 are powered by form respectively that adopt dual-power module.
Example provided above is the wherein several way of realization of the present invention, it is contemplated that can derive other multiple ways of realization under the design of the present invention, it should be appreciated that belong to the thought category of the present invention, should fall into protection scope of the present invention.
Described above illustrate and describes some preferred embodiments of the application, but as previously mentioned, it is to be understood that the application is not limited to form disclosed herein, it is not to be taken as the eliminating to other embodiments, and can be used for other combinations various, amendment and environment, and in invention contemplated scope described herein, can be modified by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change are without departing from spirit and scope, then all should in the protection domain of the application claims.
Claims (10)
1. a LED pixel screen system with feedback function, including LED pixel screen, central processing unit and driving modular circuit, described driving modular circuit is connected between described central processing unit and described LED pixel screen, described driving modular circuit accepts the management of described central processing unit, the LED chip of multiple dot matrix arrangement on described LED pixel screen is lighted and/or extinguished control, it is characterized in that, also include:
Feedback circuit, described feedback circuit is connected between described central processing unit and described LED pixel screen, described feedback circuit is for being acquired the actual displayed data of multiple described LED chips, and the described actual displayed data collected are sent to described central processing unit, for described central processing unit, the default video data of described actual displayed data Yu described LED pixel screen carried out XOR and then obtain in described LED pixel screen and show abnormal LED chip, wherein, described default video data include preset light data and preset extinguish data.
2. there is the LED pixel screen system of feedback function as claimed in claim 1, it is characterized in that, described feedback circuit is for when described driving modular circuit lights described LED pixel screen, the actual displayed data of multiple described LED chips are acquired, and the described actual displayed data collected are sent to described central processing unit, for described central processing unit, described actual displayed data are lighted data carry out XOR with described presetting and then obtain in described LED pixel screen and show abnormal LED chip.
3. there is the LED pixel screen system of feedback function as claimed in claim 1, it is characterized in that, described feedback circuit is for when described driving modular circuit extinguishes described LED pixel screen, the actual displayed data of multiple described LED chips are acquired, and the described actual displayed data collected are sent to described central processing unit, for described central processing unit, described actual displayed data and described default extinguishing data carried out XOR and then obtain in described LED pixel screen and show abnormal LED chip.
4. there is the LED pixel screen system of feedback function as claimed in claim 1, it is characterised in that also include:
LCD display module, described LCD display module is connected to described central processing unit, and described LCD display module is for displaying the duty of described central processing unit.
5. there is the LED pixel screen system of feedback function as claimed in claim 4, it is characterised in that described central processing unit is additionally operable to the particular location calculating the abnormal LED chip of described display at described LED pixel screen.
6. there is the LED pixel screen system of feedback function as claimed in claim 5, it is characterised in that described LCD display module is additionally operable to the LED chip the showing described display exception particular location at described LED pixel screen.
7. there is the LED pixel screen system of feedback function as claimed in claim 1, it is characterised in that also include:
JTAG DLL module, described JTAG DLL module is connected to described central processing unit, for described central processing unit is tested and upgrade maintenance.
8. there is the LED pixel screen system of feedback function as claimed in claim 1, it is characterized in that, described driving modular circuit includes row cutting modular circuit and row drive modular circuit, described row cutting modular circuit and described row drive modular circuit to accept the management of described central processing unit, control lighting and/or extinguishing of each described LED chip, with at described LED pixel screen display pre-set image and/or word.
9. there is the LED pixel screen system of feedback function as claimed in claim 1, it is characterized in that, described feedback circuit includes row feedback circuit and row feedback circuit, described row feedback circuit and described row feedback circuit are respectively used to the actual displayed data of multiple described LED chips are acquired, and the described actual displayed data collected are sent to described central processing unit, for described central processing unit, the default video data of described actual displayed data Yu described LED pixel screen carried out XOR and then obtain in described LED pixel screen and show abnormal LED chip.
10. there is the LED pixel screen system of feedback function as claimed in claim 1, it is characterised in that also include:
Power module, described power module is connected to described central processing unit and described LED pixel screen, for providing electric energy support to described central processing unit and described LED pixel screen.
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| CN111147900A (en) * | 2020-01-02 | 2020-05-12 | 晶晨半导体（深圳）有限公司 | User interest acquisition system and method applied to television |
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| CN101866599A (en) * | 2010-04-23 | 2010-10-20 | 北京中庆微数字设备开发有限公司 | LED on-line detection control system |
| CN101894512A (en) * | 2010-07-30 | 2010-11-24 | 深圳市中庆微科技开发有限公司 | Fault early warning system for LED display screen |
| CN101937633A (en) * | 2010-08-19 | 2011-01-05 | 深圳市中庆微科技开发有限公司 | Method and system for positioning dead pixel positions of LED display screen |
| JP2013003472A (en) * | 2011-06-20 | 2013-01-07 | Sharp Corp | Display device and control method of display device |
| CN102496342A (en) * | 2011-12-29 | 2012-06-13 | 广东海博威视电子科技股份有限公司 | LED display panel automatic tester |
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| CN111147900A (en) * | 2020-01-02 | 2020-05-12 | 晶晨半导体（深圳）有限公司 | User interest acquisition system and method applied to television |
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Address after: Room 301, Room 3, Building 4, Courtyard 10, Liangshuihe First Street, Beijing Economic and Technological Development Zone, 100176 Applicant after: Beijing Liangye Environmental Technology Co., Ltd. Address before: Room 301, Room 3, Building 4, Courtyard 10, Liangshuihe First Street, Beijing Economic and Technological Development Zone, 100176 Applicant before: BEIJING LIANGYE ENVIRONMENT TECHNOLOGY CO., LTD. |
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Application publication date: 20160706 |