TWI740464B - Display status detection system - Google Patents

Display status detection system Download PDF

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Publication number
TWI740464B
TWI740464B TW109113219A TW109113219A TWI740464B TW I740464 B TWI740464 B TW I740464B TW 109113219 A TW109113219 A TW 109113219A TW 109113219 A TW109113219 A TW 109113219A TW I740464 B TWI740464 B TW I740464B
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control module
display
detection
light
main chip
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TW109113219A
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Chinese (zh)
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TW202135041A (en
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張希喆
王安
李金鹿
陳博
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鴻海精密工業股份有限公司
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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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  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of El Displays (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The present disclosure provides a display status detection system. The display status detection system includes: a controlling module for generating and sending image display instructions and status detection instructions in a time-sharing manner; a main chip for driving target display screen to display an image or detect a display state of the target display screen in a time-sharing manner; a display controlling module for controlling the main chip to drive the target display screen to display an image according to the image display instruction; and a detection controlling module for controlling the main chip to detect the display state of the target display screen according to the state detection instruction, and returning a detection result generated by the main chip to the controlling module.

Description

顯示狀態偵測系統 Display status detection system

本發明涉及圖像顯示技術領域，尤其涉及一種顯示狀態偵測系統。 The present invention relates to the field of image display technology, in particular to a display state detection system.

放置於戶外的顯示屏，若出現黑屏或花屏等不良現象時往往無法被及時發現，影響圖像顯示效果，且難以及時修理。 When the display screen is placed outdoors, if there is a black screen or a blurred screen, it is often unable to be detected in time, which affects the image display effect and is difficult to repair in time.

本發明一方面提供一種顯示狀態偵測系統，用於偵測目標顯示屏的顯示狀態，所述顯示狀態偵測系統包括：控制模塊，用於分時生成並分時發送圖像顯示指令及狀態偵測指令；主晶片，與所述目標顯示屏電連接，用於分時驅動所述目標顯示屏顯示圖像或偵測所述目標顯示屏的顯示狀態；顯示控制模塊，與所述控制模塊通信連接且與所述主晶片電連接，用於根據所述圖像顯示指令控制所述主晶片驅動所述目標顯示屏顯示圖像；以及偵測控制模塊，與所述控制模塊通信連接且與所述主晶片電連接，用於根據所述狀態偵測指令控制所述主晶片偵測所述目標顯示屏的顯示狀態，並回傳所述主晶片生成的偵測結果至所述控制模塊。 One aspect of the present invention provides a display state detection system for detecting the display state of a target display screen. The display state detection system includes: a control module for time-sharing generation and time-sharing transmission of image display instructions and status Detection instruction; main chip, electrically connected to the target display screen, used for time-sharing to drive the target display screen to display images or detect the display state of the target display screen; display control module, and the control module Communicatively connected and electrically connected to the main chip, for controlling the main chip to drive the target display screen to display images according to the image display instruction; and a detection control module, which is communicatively connected to the control module and The main chip is electrically connected to control the main chip to detect the display state of the target display screen according to the state detection instruction, and return the detection result generated by the main chip to the control module.

上述的顯示狀態偵測系統，藉由控制模塊分時生成並發送圖像顯示指令及狀態偵測指令，以分時藉由顯示控制模塊控制主晶片驅動目標顯示屏顯示圖像及藉由偵測控制模塊控制主晶片檢測目標顯示屏的顯示狀態。在不影響目標顯示屏正常顯示的基礎上，可遠程獲知目標顯示屏的顯示狀態，有利於及時發現目標顯示屏的故障並及時修理，進而有利於提高目標顯示屏的圖像顯示效果。 The above-mentioned display state detection system generates and sends image display instructions and state detection instructions in a time-sharing manner through the control module, and controls the main chip to drive the target display screen to display images in a time-sharing manner through the display control module. The control module controls the display status of the main chip inspection target display screen. On the basis of not affecting the normal display of the target display screen, the display status of the target display screen can be obtained remotely, which is beneficial to promptly discovering the failure of the target display screen and repairing in time, thereby helping to improve the image display effect of the target display screen.

10:顯示狀態偵測系統 10: Display status detection system

11:控制模塊 11: Control module

12:顯示控制模塊 12: Display control module

13:偵測控制模塊 13: Detection control module

131:開關單元 131: switch unit

14:主晶片 14: Main chip

141:偵測單元 141: Detection unit

A1:比較器 A1: Comparator

p:第一輸入端 p: first input

q:第二輸入端 q: second input

s:輸出端 s: output

142:電流增益調整單元 142: Current gain adjustment unit

143:控制邏輯單元 143: Control logic unit

144:控制狀態寄存器 144: Control status register

145:位移寄存器 145: shift register

146:輸出緩存器 146: output buffer

15:網絡通信模塊 15: Network communication module

20:目標顯示屏 20: Target display

21:發光二極體 21: Light-emitting diode

22:畫素陣列 22: Pixel array

23:顯示單元 23: display unit

圖1為本發明實施例提供的顯示狀態偵測系統與目標顯示屏的模塊結構的一示意圖。 FIG. 1 is a schematic diagram of the module structure of a display state detection system and a target display screen provided by an embodiment of the present invention.

圖2為本發明實施例提供的顯示狀態偵測系統與目標顯示屏的模塊結構的另一示意圖。 2 is another schematic diagram of the module structure of the display state detection system and the target display screen provided by an embodiment of the present invention.

圖3為本發明另一實施例提供的顯示狀態偵測系統與目標顯示屏的模塊結構的示意圖。 3 is a schematic diagram of the module structure of the display state detection system and the target display screen provided by another embodiment of the present invention.

圖4為圖2中主晶片的模塊結構示意圖。 FIG. 4 is a schematic diagram of the module structure of the main wafer in FIG. 2.

圖5為圖4中偵測單元的電路結構示意圖。 FIG. 5 is a schematic diagram of the circuit structure of the detection unit in FIG. 4.

圖6為圖4所示的主晶片工作過程中的各訊號波形圖。 FIG. 6 is a waveform diagram of various signals in the working process of the main chip shown in FIG. 4.

實施例一 Example one

請參閱圖1，顯示狀態偵測系統10用於偵測目標顯示屏20的顯示狀態。目標顯示屏20為以複數發光二極體21作為發光源的顯示屏，顯示狀態偵測系統10用於偵測複數發光二極體21是否正常發光。複數發光二極體21陣列式排布構成目標顯示屏20的畫素陣列22。發光二極體21故障時，無法正常發光，目標顯示屏20顯示的圖像失真。對於設置於戶外的顯示屏，例如設置於公共場所用於投放商業廣告的目標顯示屏，發光二極體故障時，往往無法及時獲知。本實施例的顯示狀態偵測系統10，用於遠程對目標顯示屏20的顯示狀態進行實時或定時偵測，有利於及時發現目標顯示屏20的故障。 Please refer to FIG. 1, the display state detection system 10 is used to detect the display state of the target display screen 20. The target display screen 20 is a display screen using a plurality of light-emitting diodes 21 as a light-emitting source, and the display state detection system 10 is used for detecting whether the plurality of light-emitting diodes 21 are normally emitting light. The plurality of light-emitting diodes 21 are arranged in an array to form a pixel array 22 of the target display screen 20. When the light-emitting diode 21 fails, it cannot emit light normally, and the image displayed on the target display screen 20 is distorted. For display screens set outdoors, such as target display screens set in public places for placing commercial advertisements, when the light-emitting diode fails, it is often impossible to know in time. The display state detection system 10 of this embodiment is used to remotely perform real-time or timing detection of the display state of the target display screen 20, which is conducive to discovering the failure of the target display screen 20 in time.

請參閱圖2，顯示狀態偵測系統10包括控制模塊11、與控制模塊11通信連接的顯示控制模塊12、與控制模塊11通信連接的偵測控制模塊13、以及電連接顯示控制模塊12及偵測控制模塊13的主晶片14。主晶片14電連接目標顯示屏20。 Please refer to Figure 2, the display state detection system 10 includes a control module 11, a display control module 12 communicatively connected with the control module 11, a detection control module 13 communicatively connected with the control module 11, and an electrical connection display control module 12 and detection The main chip 14 of the control module 13 is measured. The main chip 14 is electrically connected to the target display screen 20.

控制模塊11用於分時生成並發送圖像顯示指令及狀態偵測指令。控制模塊11可為用戶端電腦、手機等。用戶藉由控制模塊11中的應用程序生成並發送所述圖像顯示指令及所述狀態偵測指令。本實施例中，所述圖像顯示指令及所述狀態偵測指令為控制模塊11根據用戶實時的輸入操作而生成並發送。於其他實施例中，所述圖像顯示指令及所述狀態偵測指令藉由定時方式發送。 The control module 11 is used for time-sharing to generate and send image display instructions and state detection instructions. The control module 11 can be a client computer, a mobile phone, or the like. The user generates and sends the image display instruction and the state detection instruction through the application program in the control module 11. In this embodiment, the image display instruction and the state detection instruction are generated and sent by the control module 11 according to the user's real-time input operation. In other embodiments, the image display command and the state detection command are sent in a timing manner.

顯示控制模塊12與控制模塊11通信連接。顯示控制模塊12用於根據控制模塊11發送的圖像顯示指令，控制主晶片14驅動複數發光二極體21發光，各發光二極體21藉由變化發光輝度以使得目標顯示屏20顯示不同的圖像。顯示控制模塊12為一電路模塊，設置於目標顯示屏20上。 The display control module 12 is in communication connection with the control module 11. The display control module 12 is used to control the main chip 14 to drive a plurality of light emitting diodes 21 to emit light according to the image display instructions sent by the control module 11. image. The display control module 12 is a circuit module, which is arranged on the target display screen 20.

偵測控制模塊13與控制模塊11通信連接，用於根據控制模塊11發送的狀態偵測指令控制主晶片14偵測目標顯示屏20的顯示狀態。偵測控制模塊13還用於回傳主晶片14生成的偵測結果至控制模塊11。偵測控制模塊13為一電路模塊，設置於目標顯示屏20上。 The detection control module 13 is in communication connection with the control module 11 and is used for controlling the main chip 14 to detect the display state of the target display screen 20 according to the state detection instruction sent by the control module 11. The detection control module 13 is also used to return the detection result generated by the main chip 14 to the control module 11. The detection control module 13 is a circuit module, which is arranged on the target display screen 20.

偵測控制模塊13包括開關單元131。於一實施例中，開關單元131為一開關元件。於另一實施例中，開關單元131為一開關電路。 The detection control module 13 includes a switch unit 131. In one embodiment, the switch unit 131 is a switch element. In another embodiment, the switch unit 131 is a switch circuit.

控制模塊11發送所述圖像顯示指令時，開關單元131保持斷開，偵測控制模塊13無訊號輸出。所述圖像顯示指令傳輸至顯示控制模塊12，顯示控制模塊12根據所述圖像顯示指令控制主晶片14驅動目標顯示屏20顯示圖像。控制模塊11發送所述狀態偵測指令時，開關單元131導通，偵測控制模塊13根據所述狀態偵測指令控制主晶片14偵測目標顯示屏20的顯示狀態。 When the control module 11 sends the image display instruction, the switch unit 131 is kept off, and the detection control module 13 has no signal output. The image display instruction is transmitted to the display control module 12, and the display control module 12 controls the main chip 14 to drive the target display screen 20 to display images according to the image display instruction. When the control module 11 sends the state detection instruction, the switch unit 131 is turned on, and the detection control module 13 controls the main chip 14 to detect the display state of the target display screen 20 according to the state detection instruction.

請繼續參閱圖2，顯示狀態偵測系統10還包括網絡通信模塊15，在實際產品中，網絡通信模塊15設置於目標顯示屏20上。網絡通信模塊15用於建立控制模塊11與顯示控制模塊12及偵測控制模塊13之間的網絡連接，以實現遠程控制目標顯示屏20。 Please continue to refer to FIG. 2, the display state detection system 10 also includes a network communication module 15. In an actual product, the network communication module 15 is disposed on the target display screen 20. The network communication module 15 is used to establish a network connection between the control module 11 and the display control module 12 and the detection control module 13 to realize remote control of the target display screen 20.

主晶片14與顯示控制模塊12、偵測控制模塊13及目標顯示屏20電連接，主晶片14用於分時根據顯示控制模塊12的控制驅動目標顯示屏20顯示圖像及根據偵測控制模塊13的控制偵測目標顯示屏20的顯示狀態。 The main chip 14 is electrically connected to the display control module 12, the detection control module 13 and the target display screen 20. The main chip 14 is used for time-sharing to drive the target display screen 20 to display images according to the control of the display control module 12 and to display images according to the detection control module The control of 13 detects the display state of the target display 20.

請參閱圖3，於本發明另一實施例中，目標顯示屏20包括複數顯示單元23，顯示狀態偵測系統10包括複數偵測控制模塊13。每一偵測控制模塊13唯一對應電連接一顯示單元23。本實施例中，複數偵測控制模塊13依次串聯，並共同電連接至控制模塊11及主晶片14。於另一實施例中，複數偵測控制模塊13可以並聯的方式分別電連接至控制模塊11及主晶片14。每一偵測控制模塊13用於根據控制模塊11發送的狀態偵測指令控制主晶片14偵測目標顯示屏20中與其電連接的顯示單元23的顯示狀態。被投放於戶外的目標顯示屏20尺寸較大，藉由將整個目標顯示屏20劃分為複數顯示單元23，並設置複數偵 測控制模塊13用於分別對各個顯示單元23單獨控制，可降低每個偵測控制模塊13的負載，從而有利於增強顯示狀態偵測系統10輸出至目標顯示屏20的訊號。 Please refer to FIG. 3, in another embodiment of the present invention, the target display screen 20 includes a plurality of display units 23, and the display state detection system 10 includes a plurality of detection control modules 13. Each detection control module 13 is uniquely and correspondingly electrically connected to a display unit 23. In this embodiment, a plurality of detection and control modules 13 are connected in series in sequence, and are electrically connected to the control module 11 and the main chip 14 in common. In another embodiment, the plurality of detection control modules 13 may be electrically connected to the control module 11 and the main chip 14 in parallel. Each detection control module 13 is used for controlling the main chip 14 to detect the display state of the display unit 23 electrically connected to the target display screen 20 according to the state detection instruction sent by the control module 11. The target display screen 20 placed outdoors is larger in size. By dividing the entire target display screen 20 into a plurality of display units 23, and setting a plurality of detection units The detection control module 13 is used to separately control each display unit 23, which can reduce the load of each detection control module 13 and thereby help to enhance the signal output from the display state detection system 10 to the target display screen 20.

請同時參閱圖4及圖5，主晶片14包括偵測單元141，偵測單元141用於偵測複數發光二極體21的發光狀態。也即，偵測單元141用於偵測目標顯示屏20在顯示圖像時，複數發光二極體21是否正常發光。每一發光二極體21正常發光時其正負極電壓差值及流經發光二極體21的電流值均在一預設範圍內。本實施例中偵測單元141用於根據每一發光二極體21正負極電壓差值是否在所述預設範圍內，判斷每一發光二極體21是否正常發光。於本發明另一實施例中，偵測單元141用於根據流經每一發光二極體21的電流值是否在預設範圍內，判斷每一發光二極體21是否正常發光。本實施例中，複數發光二極體21中，部分發光二極體21發射藍光，部分發光二極體21發射綠光，其餘發光二極體21發射紅光。發射藍光及發射綠光的發光二極體21在正常發光時，正負電壓差為3.2V左右，也即，正負電壓差在3.2V的一個預設範圍內波動，例如，正負電壓差在3.2±0.5V範圍內波動，則發射藍光及發射綠光的各個發光二極體21所對應的所述預設範圍為3.2±0.5V；發射紅光的發光二極體21在正常發光時，正負電壓差為2.4V左右，也即，正負電壓差在2.4V的一個預設範圍內波動，例如，正負電壓差在2.4±0.5V範圍內波動，則發射紅光的各個發光二極體21所對應的所述預設範圍為2.4±0.5V。 Please refer to FIGS. 4 and 5 at the same time. The main chip 14 includes a detection unit 141 for detecting the light-emitting state of the plurality of light-emitting diodes 21. That is, the detecting unit 141 is used to detect whether the plurality of light-emitting diodes 21 normally emit light when the target display screen 20 is displaying an image. When each light-emitting diode 21 normally emits light, the voltage difference between its positive and negative electrodes and the current value flowing through the light-emitting diode 21 are both within a predetermined range. In this embodiment, the detection unit 141 is used to determine whether each light-emitting diode 21 emits normally according to whether the voltage difference between the positive and negative electrodes of each light-emitting diode 21 is within the preset range. In another embodiment of the present invention, the detection unit 141 is configured to determine whether each light-emitting diode 21 emits normally according to whether the current value flowing through each light-emitting diode 21 is within a predetermined range. In this embodiment, among the plurality of light-emitting diodes 21, some of the light-emitting diodes 21 emit blue light, some of the light-emitting diodes 21 emit green light, and the remaining light-emitting diodes 21 emit red light. When the light emitting diode 21 emitting blue light and green light emits light normally, the positive and negative voltage difference is about 3.2V, that is, the positive and negative voltage difference fluctuates within a preset range of 3.2V, for example, the positive and negative voltage difference is 3.2± Fluctuations within the range of 0.5V, the preset range corresponding to each light emitting diode 21 emitting blue light and green light is 3.2±0.5V; when the light emitting diode 21 emitting red light normally emits light, the positive and negative voltages The difference is about 2.4V, that is, the positive and negative voltage difference fluctuates within a preset range of 2.4V. For example, if the positive and negative voltage difference fluctuates within the range of 2.4±0.5V, each light emitting diode 21 that emits red light corresponds to The preset range of is 2.4±0.5V.

於本發明另一實施例中，目標顯示屏20中每一發光二極體21皆用於發射藍光，則，每一發光二極體21在發光狀態時，所對應的正負極之間的電壓差值的預設範圍至少部分重疊。例如，部分發光二極體21所對應的預設範圍為3.2±0.5V，部分發光二極體21所對應的預設範圍為3.0±0.5V，則每一發光二極體21在發光狀態時，所對應的正負極之間的電壓差值的預設範圍部分重疊，預設範圍的重疊部分為2.7V~3.5V。又例如各個發光二極體21所對應的預設範圍皆為3.2±0.5V，則各個發光二極體21所對應的預設範圍完全重疊。 In another embodiment of the present invention, each light-emitting diode 21 in the target display screen 20 is used to emit blue light. Then, when each light-emitting diode 21 is in the light-emitting state, the voltage between the corresponding positive and negative electrodes is The preset ranges of differences at least partially overlap. For example, the preset range corresponding to some light-emitting diodes 21 is 3.2±0.5V, and the preset range corresponding to some light-emitting diodes 21 is 3.0±0.5V, then each light-emitting diode 21 is in the light-emitting state. , The preset range of the voltage difference between the corresponding positive and negative electrodes partially overlaps, and the overlap portion of the preset range is 2.7V~3.5V. For another example, the predetermined range corresponding to each light-emitting diode 21 is all 3.2±0.5V, and the predetermined range corresponding to each light-emitting diode 21 completely overlaps.

應當理解的，上述所有的數值範圍僅為舉例說明，不對本發明造成限制。 It should be understood that all the above numerical ranges are only examples and do not limit the present invention.

請參閱圖5，偵測單元141包括一比較器A1，比較器A1具有一第一輸入端p、一第二輸入端q及一輸出端s。第一輸入端p分別電連接各個的發光二極體21，用於分時輸入各個發光二極體21的偵測電壓VDS，第二輸入端q 用於輸入參考電壓VSDTH，輸出端s用於輸出偵測結果。第一輸入端p電連接各個發光二極體21的負極，偵測電壓VDS為發光二極體21的負極電壓。第二輸入端q輸入的參考電壓為VSDTH根據各發光二極體的正負極電壓差設定，本實施例中，VSDTH設定為0.5V。偵測電壓VDS大於參考電壓VSDTH時，輸出端s輸出1；偵測電壓VDS小於參考電壓VSDTH時，輸出端s輸出0。訊號1指示發光二極體21正常發光，訊號0指示發光二極體21故障。 Referring to FIG. 5, the detecting unit 141 includes a comparator A1, and the comparator A1 has a first input terminal p, a second input terminal q, and an output terminal s. The first input terminal p is electrically connected to each light-emitting diode 21, and is used for time-sharing input of the detection voltage VDS of each light-emitting diode 21, and the second input terminal q It is used to input the reference voltage VSDTH, and the output terminal s is used to output the detection result. The first input terminal p is electrically connected to the negative electrode of each light-emitting diode 21, and the detection voltage VDS is the negative electrode voltage of the light-emitting diode 21. The reference voltage input from the second input terminal q is VSDTH, which is set according to the voltage difference between the positive and negative electrodes of each light-emitting diode. In this embodiment, VSDTH is set to 0.5V. When the detection voltage VDS is greater than the reference voltage VSDTH, the output terminal s outputs 1; when the detection voltage VDS is less than the reference voltage VSDTH, the output terminal s outputs 0. Signal 1 indicates that the light-emitting diode 21 normally emits light, and signal 0 indicates that the light-emitting diode 21 is malfunctioning.

請再參閱圖4，主晶片14還包括電流增益調整單元142、控制邏輯單元143、控制狀態寄存器144、位移寄存器145及輸出緩存器146。主晶片14包括5個輸入端，用於分別輸入電流增益訊號R-EXT、使能訊號、鎖存訊號LE、時鐘訊號CLK及顯示訊號SDI，主晶片14包括一輸出端，所述輸出端用於輸出偵測訊號SDO。 Please refer to FIG. 4 again. The main chip 14 further includes a current gain adjustment unit 142, a control logic unit 143, a control status register 144, a shift register 145, and an output buffer 146. The main chip 14 includes 5 input terminals for inputting current gain signal R-EXT, enable signal, latch signal LE, clock signal CLK, and display signal SDI respectively. The main chip 14 includes an output terminal. To output the detection signal SDO.

電流增益訊號R-EXT根據目標顯示屏20及顯示狀態偵測系統10內部的硬件參數進行設置，以調節目標顯示屏20及顯示狀態偵測系統10內部的電流大小。請參閱圖6(圖6中坐標軸t表示時間)，在第一時段，時鐘訊號CLK依次輸出16位脈衝訊號(圖6中省略了16位脈衝訊號中的部分脈衝訊號)，顯示訊號SDI持續輸出為高電平，使得所述16位脈衝訊號移入位移位寄存器145。在第二時段，鎖存訊號LE輸出為高電平，時鐘訊號CLK持續輸出為低電平，鎖存訊號LE下降沿數據隨存至輸出緩存器146；使能訊號輸出為低電平，則偵測單元141輸出為低電平，發光二極體21發光。本實施例在第二時段中，控制使能訊號輸出為低電平的脈衝寬度大於300納秒，以偵測發光二極體21的偵測電壓VDS。比較器A1比較各個發光二極體21的偵測電壓VDS與參考電壓VSDTH的大小，並將比較結果藉由輸出端s返回並存儲至位移寄存器145中。在第三時段，時鐘訊號CLK再次輸出為高電平，此時位移寄存器145中存儲的比較結果以偵測訊號SDO輸出，其中，偵測訊號SDO輸出為1時，指示發光二極體21正常發光，偵測訊號SDO輸出為0時，指示發光二極體21故障。如上述的為一個作動週期T內的訊號輸出過程。顯示狀態偵測系統10可工作於複數作動週期T。 The current gain signal R-EXT is set according to the internal hardware parameters of the target display screen 20 and the display state detection system 10 to adjust the current size inside the target display screen 20 and the display state detection system 10. Refer to Figure 6 (the coordinate axis t in Figure 6 represents time). In the first period, the clock signal CLK sequentially outputs a 16-bit pulse signal (part of the 16-bit pulse signal is omitted in Figure 6), indicating that the signal SDI continues The output is high, so that the 16-bit pulse signal is shifted into the bit shift register 145. In the second period, the latch signal LE output is high, the clock signal CLK continues to output low, and the falling edge data of the latch signal LE is stored in the output buffer 146; the enable signal output is low, then The output of the detection unit 141 is a low level, and the light-emitting diode 21 emits light. In this embodiment, in the second time period, the pulse width of the control enable signal output to a low level is greater than 300 nanoseconds to detect the detection voltage VDS of the light-emitting diode 21. The comparator A1 compares the detection voltage VDS of each light-emitting diode 21 with the reference voltage VSDTH, and returns the comparison result through the output terminal s and stores it in the shift register 145. In the third period, the clock signal CLK is output at a high level again. At this time, the comparison result stored in the shift register 145 is output as the detection signal SDO. When the detection signal SDO output is 1, it indicates that the light-emitting diode 21 is normal. When the output of the detection signal SDO is 0, it indicates that the light-emitting diode 21 is malfunctioning. As mentioned above, it is the signal output process in an actuation period T. The display state detection system 10 can work in a plurality of operating periods T.

本實施例提供的顯示狀態偵測系統10，用於偵測被投放於戶外的目標顯示屏20的顯示狀態。藉由控制模塊11分時生成並發送圖像顯示指令及狀態偵測指令，以分時藉由顯示控制模塊12控制主晶片14驅動目標顯示屏20顯 示圖像及藉由偵測控制模塊13控制主晶片14檢測目標顯示屏20的顯示狀態。在不影響目標顯示屏20正常顯示的基礎上，可遠程獲知目標顯示屏20的顯示狀態，有利於及時發現目標顯示屏20的故障並及時修理，進而有利於提高目標顯示屏20的圖像顯示效果。 The display state detection system 10 provided in this embodiment is used to detect the display state of the target display screen 20 placed outdoors. The control module 11 generates and sends image display instructions and state detection instructions in a time-sharing manner, so that the display control module 12 controls the main chip 14 to drive the target display screen 20 in a time-sharing manner. The display image is displayed and the main chip 14 is controlled by the detection control module 13 to detect the display state of the target display screen 20. On the basis of not affecting the normal display of the target display screen 20, the display status of the target display screen 20 can be obtained remotely, which is conducive to promptly discovering the failure of the target display screen 20 and repairing it in time, thereby helping to improve the image display of the target display screen 20 Effect.

本技術領域之普通技術人員應當認識到，以上之實施方式僅是用來說明本發明，而並非用作為對本發明之限定，只要於本發明之實質精神範圍之內，對以上實施例所作之適當改變及變化均落於本發明要求保護之範圍之內。 Those of ordinary skill in the art should realize that the above embodiments are only used to illustrate the present invention, and not to limit the present invention. As long as they fall within the essential spirit of the present invention, the above embodiments are appropriately made. Changes and changes fall within the scope of protection of the present invention.

10:顯示狀態偵測系統 10: Display status detection system

11:控制模塊 11: Control module

12:顯示控制模塊 12: Display control module

13:偵測控制模塊 13: Detection control module

131:開關單元 131: switch unit

14:主晶片 14: Main chip

15:網絡通信模塊 15: Network communication module

20:目標顯示屏 20: Target display

Claims (10)

一種顯示狀態偵測系統，用於偵測目標顯示屏的顯示狀態，其改良在於，所述顯示狀態偵測系統包括：控制模塊，用於分時生成並分時發送圖像顯示指令及狀態偵測指令；主晶片，與所述目標顯示屏電連接，用於分時驅動所述目標顯示屏顯示圖像或偵測所述目標顯示屏的顯示狀態；顯示控制模塊，與所述控制模塊通信連接且與所述主晶片電連接，用於根據所述圖像顯示指令控制所述主晶片驅動所述目標顯示屏顯示圖像；偵測控制模塊，與所述控制模塊通信連接且與所述主晶片電連接，用於根據所述狀態偵測指令控制所述主晶片偵測所述目標顯示屏的顯示狀態，並回傳所述主晶片生成的偵測結果至所述控制模塊；以及網絡通信模塊，所述網絡通信模塊用於建立所述控制模塊與所述顯示控制模塊及所述偵測控制模塊之間的通信連接。 A display state detection system for detecting the display state of a target display screen. The improvement is that the display state detection system includes: a control module for time-sharing generation and time-sharing to send image display instructions and state detection Test instructions; the main chip, which is electrically connected to the target display screen, is used for time-sharing to drive the target display screen to display images or detect the display state of the target display screen; a display control module, which communicates with the control module Connected and electrically connected with the main chip, used for controlling the main chip to drive the target display screen to display images according to the image display instruction; a detection control module, communicating with the control module, and communicating with the The main chip is electrically connected to control the main chip to detect the display state of the target display screen according to the state detection command, and return the detection result generated by the main chip to the control module; and network A communication module, where the network communication module is used to establish a communication connection between the control module and the display control module and the detection control module. 如請求項1所述的顯示狀態偵測系統，其中，所述目標顯示屏包括複數發光二極體；所述偵測控制模塊用於根據所述狀態偵測指令控制所述主晶片偵測所述複數發光二極體的發光狀態。 The display state detection system according to claim 1, wherein the target display screen includes a plurality of light-emitting diodes; the detection control module is used to control the main chip to detect the state according to the state detection instruction Describe the light-emitting state of the plural light-emitting diodes. 如請求項2所述的顯示狀態偵測系統，其中，所述偵測控制模塊用於根據所述狀態偵測指令控制所述主晶片偵測所述複數發光二極體在發光狀態下的正負極之間的電壓差值是否在預設範圍內。 The display state detection system according to claim 2, wherein the detection control module is configured to control the main chip to detect the positive state of the plurality of light-emitting diodes in the light-emitting state according to the state detection command. Whether the voltage difference between the negative poles is within the preset range. 如請求項3所述的顯示狀態偵測系統，其中，各個發光二極體對應的所述預設範圍至少部分重疊。 The display state detection system according to claim 3, wherein the predetermined ranges corresponding to the respective light-emitting diodes at least partially overlap. 如請求項2所述的顯示狀態偵測系統，其中，所述複數發光二極體在發光狀態下時，所述偵測控制模塊用於根據所述狀態偵測指令控制所述主晶片分別偵測流經所述複數發光二極體的電流值是否在預設範圍內。 The display state detection system according to claim 2, wherein, when the plurality of light-emitting diodes are in a light-emitting state, the detection control module is used to control the main chip to detect respectively according to the state detection command Detecting whether the current value flowing through the plurality of light-emitting diodes is within a preset range. 如請求項2所述的顯示狀態偵測系統，其中，所述主晶片包括偵測單元，所述偵測單元用於偵測所述複數發光二極體在發光狀態下的正負極之間的電壓差是否在預設電壓範圍內。 The display state detection system according to claim 2, wherein the main chip includes a detection unit, and the detection unit is used to detect the difference between the positive and negative poles of the plurality of light-emitting diodes in the light-emitting state. Whether the voltage difference is within the preset voltage range. 如請求項6所述的顯示狀態偵測系統，其中，所述偵測單元包括比較器； 所述比較器具有第一輸入端、第二輸入端及輸出端；所述第一輸入端用於輸入一閾值電壓，所述第二輸入端電連接所述複數發光二極體的負極，所述輸出端電連接所述偵測控制模塊。 The display state detection system according to claim 6, wherein the detection unit includes a comparator; The comparator has a first input terminal, a second input terminal and an output terminal; the first input terminal is used to input a threshold voltage, the second input terminal is electrically connected to the negative electrode of the plurality of light-emitting diodes, so The output terminal is electrically connected to the detection control module. 如請求項6所述的顯示狀態偵測系統，其中，所述目標顯示屏包括複數顯示單元，所述顯示狀態偵測系統包括複數偵測控制模塊，每一偵測控制模塊唯一對應電連接一個顯示單元，所述複數偵測控制模塊依次串聯，並電連接至所述控制模塊及所述主晶片。 The display state detection system according to claim 6, wherein the target display screen includes a plurality of display units, the display state detection system includes a plurality of detection control modules, and each detection control module uniquely corresponds to one electrical connection In the display unit, the plurality of detection control modules are serially connected in series and electrically connected to the control module and the main chip. 如請求項1所述的顯示狀態偵測系統，其中，所述偵測控制模塊包括開關單元；所述偵測控制模塊接收到所述狀態偵測指令時，所述開關單元導通，所述偵測控制模塊根據所述狀態偵測指令控制所述主晶片偵測所述目標顯示屏的顯示狀態。 The display state detection system according to claim 1, wherein the detection control module includes a switch unit; when the detection control module receives the state detection instruction, the switch unit is turned on, and the detection control module The detection control module controls the main chip to detect the display state of the target display screen according to the state detection instruction. 如請求項1所述的顯示狀態偵測系統，其中，所述控制模塊用於實時或定時地生成並發送所述圖像顯示指令至所述顯示控制模塊、生成並發送所述狀態偵測指令至所述偵測控制模塊。 The display state detection system according to claim 1, wherein the control module is used to generate and send the image display instruction to the display control module in real time or regularly, and to generate and transmit the state detection instruction To the detection control module.
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