WO2021098229A1 - Système de commande d'affichage et écran d'affichage - Google Patents

Système de commande d'affichage et écran d'affichage Download PDF

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Publication number
WO2021098229A1
WO2021098229A1 PCT/CN2020/100655 CN2020100655W WO2021098229A1 WO 2021098229 A1 WO2021098229 A1 WO 2021098229A1 CN 2020100655 W CN2020100655 W CN 2020100655W WO 2021098229 A1 WO2021098229 A1 WO 2021098229A1
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WIPO (PCT)
Prior art keywords
module
switch
display
card
signal
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PCT/CN2020/100655
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English (en)
Chinese (zh)
Inventor
邢敏
范文龙
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深圳市洲明科技股份有限公司
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Publication of WO2021098229A1 publication Critical patent/WO2021098229A1/fr

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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
    • 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]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving

Definitions

  • This application relates to the field of display technology, in particular to a display control system and a display screen.
  • LED Light Emitting Diode
  • LED displays are often in a state of uninterrupted power, such as multimedia displays in churches and classrooms. Long-term lighting of the display will lead to waste of electricity.
  • the existing display screen usually has a standby function. When the user does not need to use the display screen to play pictures, the display screen will be in a standby state, but there is still standby power consumption, which leads to a waste of electric energy.
  • a display control system and a display screen are provided.
  • a display control system includes: a sending card, a processing module, a switch module, and a display component; the display component includes at least one of a receiving card, an adapter card, and a display module, and the processing module is respectively connected to the control end of the switch module and the sending card
  • the first end of the switch module is used to connect to the power source, and the second end of the switch module is connected to at least one of the receiving card, the adapter card and the display module;
  • the sending card is used to send SDI signals to the processing module;
  • the processing module uses When it is detected that the SDI signal is a low-level signal, a first control signal is generated, and the first control signal is sent to the switch module, so that the switch module is in an off state.
  • the processing module is configured to generate the first control signal when it is detected that the SDI signal is a low-level signal within a preset time period.
  • the processing module is configured to generate a second control signal when it is detected that the SDI signal has a high-level signal within the preset time, and send the second control signal to The switch module is such that the switch module is in a conducting state.
  • it further includes a signal transceiver, and the sending card is connected to the processing module through the signal transceiver.
  • the sending card is connected to the receiving card, and the adapter card is connected to the receiving card and the display module respectively; the sending card is also used to pass display data through the The receiving card and the adapter card are sent to the display module.
  • the switch module is a high-level on and low-level off switch, and the first control signal is a low-level signal.
  • it further includes a pull-down resistor, and the control terminal of the switch module is grounded through the pull-down resistor.
  • the switch module is an NMOS transistor.
  • the switch module is a low-level on and high-level off switch, and the first control signal is a high-level signal.
  • it further includes a pull-up resistor, and the control terminal of the switch module is connected to the pull-up power supply through the pull-up resistor.
  • the switch module is a PMOS tube.
  • the display assembly includes the riser card, the receiving card, and the display module
  • the switch module includes a first switch, a second switch, and a third switch
  • the processing module Are respectively connected to the control terminals of the first switch, the second switch, and the third switch, and the first terminals of the first switch, the second switch, and the third switch are connected to the power supply;
  • the second end of the switch is connected to the receiving card, the second end of the second switch is connected to the adapter card, and the second end of the third switch is connected to the display module.
  • a display screen which includes a display control system, and the display control system includes: a sending card, a processing module, a switch module, and a display component;
  • the display assembly includes at least one of a receiving card, a riser card, and a display module, the processing module is respectively connected to the control terminal of the switch module and the sending card, and the first terminal of the switch module is used for Connected to a power source, and the second end of the switch module is connected to at least one of the receiving card, the riser card, and the display module;
  • the sending card is used to send an SDI signal to the processing module; the processing module is used to generate a first control signal when it is detected that the SDI signal is a low-level signal, and send the first control signal To the switch module, so that the switch module is in an off state.
  • Fig. 1 is a structural block diagram of a display control system according to an embodiment of the present application
  • Fig. 2 is a structural block diagram of a display control system according to another embodiment of the present application.
  • Fig. 3 is a schematic circuit diagram of a display control system according to an embodiment of the present application.
  • Fig. 4 is a schematic circuit diagram of a display control system according to another embodiment of the present application.
  • FIG. 1 shows a structural block diagram of a display control system according to an embodiment of the present application.
  • the display control system 10 includes: a sending card 100, a processing module 200, a switch module 300, and a display assembly 400.
  • the display assembly 400 includes at least one of a receiving card 410, a riser card 420, and a display module 430.
  • the processing module 200 is respectively connected to the control terminal of the switch module 300 and the sending card 100.
  • the first end of the switch module 300 is used to connect to the power source 500.
  • the second end of the switch module 300 is connected to the display assembly 400, that is, to at least one of the receiving card 410, the riser card 420 and the display module 430.
  • the sending card 100 is used to send an SDI (serial digital interface) signal to the processing module 200.
  • the processing module 200 is configured to generate a first control signal when it is detected that the SDI signal is a low-level signal, and send the first control signal to the switch module 300, so that the switch module is in an off state.
  • the SDI interface (serial digital interface) of the sending card 100 is connected to the processing module 200.
  • the SDI interface of the sending card 100 In the LED display screen, when controlling the use of the display screen to play a picture, the SDI interface of the sending card 100 will output a high-level signal.
  • the SDI interface of the sending card 100 When the display screen is not controlled to play images, the SDI interface of the sending card 100 outputs a low-level signal. That is, the SDI signal is used to determine whether the display screen enters the standby state. In this way, by detecting the SDI signal output by the sending card 100, it can be determined whether the display screen is in a standby state. You can use any controller, such as a computer, mouse, keyboard, or somatosensory device to control the display to use the playback screen.
  • the SDI signal sent by the sending card 100 when the SDI signal sent by the sending card 100 is a high-level signal, that is, when the SDI interface of the sending card 100 outputs "1", it means that the display screen is in a normal display state, and the user is using the display screen to play the screen. .
  • the SDI signal sent by the sending card 100 is low, that is, when the SDI interface of the sending card outputs "0", it means that the display screen is in a standby state and the user is not using the display screen to play pictures.
  • the SDI signal output by the sending card when the user does not control the computer to make the screen play the screen, the SDI signal output by the sending card is a low-level signal, that is, the SDI signal output by the sending card is "0".
  • the SDI signal output by the sending card is a high-level signal, that is, the SDI signal output by the sending card is "1".
  • the display assembly 400 includes at least one of a receiving card 410, a riser card 420, and a display module 430.
  • the second end of the switch module 300 is connected to at least one of the receiving card 410, the adapter card 420, and the display module 430 in the display assembly 400, that is, the second end of the switch module 400 is connected to the receiving card 410 in the display assembly 400.
  • At least one of the power terminal, the power terminal of the riser card 420 and the power terminal of the display module 430 is connected. That is, the switch module 300 can control one or more of the receiving card 410, the adapter card 420, and the display module 430 to disconnect from the power source. It can be set according to the actual needs of users.
  • the processing module 200 detects the SDI signal to control the disconnection state of the switch module 300, so that at least one of the receiving card 410, the adapter card 420, and the display module 430 is disconnected from the power supply 500. In this way, the standby loss of at least one of the receiving card 410, the adapter card 420 and the display module 430 is reduced, thereby achieving the effect of saving power.
  • the sending card is also connected to the receiving card.
  • the adapter card is respectively connected with the receiving card and the display module.
  • the sending card is also used to send the display data to the display module through the receiving card and the adapter card to control the work of the display module.
  • the above display control system detects the SDI signal output by the sending card through the processing module to determine whether the display component is working.
  • the processing module detects that the SDI signal is a low-level signal, it indicates that the display screen is in a standby state.
  • the processing module generates the first control signal, and sends the first control signal to the switch module, so that the switch module is in an off state.
  • at least one of the receiving card, the adapter card and the display module can be disconnected from the power supply without the user's power-off operation, thereby reducing the standby power consumption of the receiving card, the adapter card or the display module, so that The display screen is in a deep standby state, thereby reducing the standby loss of the display screen and achieving the effect of saving power.
  • the processing module is further configured to generate the first control signal when it is detected that the SDI signal remains a low-level signal for a preset period of time. It should be understood that users usually use the display screen to play pictures intermittently. For example, when a teacher uses a multimedia display screen to teach in a classroom, he will not always operate the computer for control. If the processing module detects that the SDI signal is a low-level signal, it controls the switch module to turn off, which will cause the display to often switch between on and off, which will affect the user's use.
  • the preset time period can be set according to the actual needs of the user.
  • the preset time period may range from 0S (seconds) to 300S, for example, the preset time period may be 180S.
  • the processing module is further configured to generate a second control signal when it is detected that the SDI signal has a high level signal in the preset time period, and send the second control signal to the switch module, so that the switch The module is turned on.
  • the traditional display screen has standby power consumption when it is in standby.
  • the switch is turned on, which is not convenient for the user to use it normally.
  • the processing module detects the SDI signal to determine whether the user needs to use the display screen to play the picture. When it is detected that the user needs to use the display screen to play a picture, the automatic control switch module is in the on state, that is, the display screen is automatically controlled to start, without the user's manual control of the switch, which greatly facilitates the user's use.
  • FIG. 2 is a structural block diagram of a display control system according to another embodiment of the present application.
  • the display control system 10 also includes a signal transceiver 600 and a sending card 100 is connected to the processing module 200 through the signal transceiver 600.
  • the signal transceiver is used to filter the SDI signal and filter the interference signal in the SDI signal.
  • the model of the signal transceiver may be 74HC245. It should be understood that when the sending card sends SDI signals, it may be doped with some interference signals.
  • the signal transceiver can filter out the interference signals so that the processing module can better receive the SDI signals and prevent the interference signals from affecting the display screen. normal display.
  • FIG. 3 is a schematic circuit diagram of a display control system according to an embodiment of the present application.
  • the switch module 300 is a high-level on and low-level off switch
  • the first control signal is a low-level signal.
  • the switch module is a high-level on and low-level off switch
  • the control terminal of the switch module receives a high-level signal
  • the first terminal and the second terminal of the switch module are in a conductive state
  • the power supply is connected to the display assembly 400.
  • the control terminal of the switch module receives a low-level signal
  • the first terminal and the second terminal of the switch module are in a disconnected state
  • the power supply is disconnected from the display assembly 400.
  • the switch module may be a switch tube. Specifically, since the switch tube has the advantages of small size, low impedance, and high sensitivity, by using the switch tube as the switch module, the volume of the display screen can be reduced on the basis of ensuring that the switch module is normally turned on and off. Further, in one of the embodiments, the switch module may be a field effect transistor. In one of the embodiments, the switch module may be an NMOS (N-Metal-Oxide-Semiconductor, N-type metal-oxide-semiconductor) tube.
  • NMOS N-Metal-Oxide-Semiconductor, N-type metal-oxide-semiconductor
  • the NMOS tube has the functions of high-level conduction and low-level disconnection, when the gate of the NMOS tube receives a low-level signal, the NMOS tube is in the off state, so that the source of the NMOS tube is connected to The drain is disconnected; when the gate of the NMOS tube receives a high-level signal, the NMOS tube is in an on state, so that the source and drain of the NMOS tube are turned on.
  • the control switch module can be in an off state.
  • the display control system 10 further includes a pull-down resistor R1, and the control terminal of the switch module 300 is grounded through the pull-down resistor R1. Since the control end of the switch module is connected to the processing module, the processing module is also connected to the pull-down resistor R1. The first end of the pull-down resistor R1 is connected to the control end of the switch module, and the second end of the pull-down resistor R1 is grounded. Since the second end of the pull-down resistor R1 is grounded, even if there is an uncertain interference signal at the first end of the pull-down resistor R1, the pull-down resistor R1 can pull down the interference signal and stabilize the voltage at the first end of the pull-down resistor R1.
  • the switch module is a switch with high-level conduction and low-level disconnection, by setting the pull-down resistor R1, when the processing module outputs the first control signal, that is, when the low-level signal controls the switch to turn off, the switch can be turned off.
  • the control terminal of the module stably receives the low-level signal, so that the switch module is in the off state, which can prevent the interference signal from causing the switch module to malfunction.
  • the switch module 300 is a low-level on and high-level off switch, and the first control signal It is a high level signal. Since the switch module is a low-level on and high-level off switch, when the control terminal of the switch module receives a high-level signal, the first terminal and the second terminal of the switch module are in a disconnected state; when the switch module When the control terminal of the switch module receives a low-level signal, the first terminal and the second terminal of the switch module are in a conducting state. Further, in one of the embodiments, the switch module is a field effect transistor.
  • the switch module is a PMOS (P-Metal-Oxide-Semiconductor, P-type metal-oxide-semiconductor) tube. Since the PMOS tube has the functions of high-level disconnection and low-level conduction, when the gate of the PMOS tube receives a low-level signal, the PMOS tube is in the on state, which makes the source and drain of the PMOS tube On; when the gate of the PMOS tube receives a high-level signal, the PMOS tube is in an off state, that is, the source and drain of the PMOS tube are disconnected. In this way, by providing such a switch module, when the first control signal output by the processing module is a high-level signal, the control switch module can be in an off state.
  • PMOS P-Metal-Oxide-Semiconductor, P-type metal-oxide-semiconductor
  • the display control system further includes a pull-up resistor R2, and the control terminal of the switch module is used to connect to the pull-up power supply through the pull-up resistor R2. Since the control terminal of the switch module is connected to the processing module, the processing module is also connected to the pull-up resistor R2.
  • the first end of the pull-up resistor R2 is respectively connected to the control end of the switch module and the processing module, and the second end of the pull-up resistor R2 is used to connect the pull-up power supply. Since the second end of the pull-up resistor R2 is connected to the pull-up power supply, the first end of the pull-up resistor R2 can be stabilized at a high level signal.
  • the switch module when the switch module is a high-level off and low-level on switch, by setting the pull-up resistor R2, when the processing module outputs the first control signal, that is, when the high-level signal controls the switch to turn off, the switch can be turned off.
  • the control terminal of the switch module stably receives the high-level signal, so that the switch module is in the off state, so that the interference signal can prevent the switch module from malfunctioning.
  • the display component includes a riser card, a receiving card, and a display module.
  • the switch module includes a first switch, a second switch, and a third switch.
  • the processing module is respectively connected with the control terminals of the first switch, the second switch and the third switch.
  • the first ends of the first switch, the second switch and the third switch are all used to connect to the power source.
  • the second end of the first switch is connected with the receiving card, the second end of the second switch is connected with the adapter card, and the second end of the third switch is connected with the display module.
  • the processing module has three output terminals, namely a first output terminal, a second output terminal, and a third output terminal.
  • the first output terminal is connected with the control terminal of the first switch module
  • the second output terminal is connected with the control terminal of the second switch module
  • the third output terminal is connected with the control terminal of the third switch module.
  • the application also relates to a display screen, including the display control system in any of the above embodiments.
  • the display control system includes: a sending card, a processing module, a switch module and a display component.
  • the display component includes at least one of a receiving card, a riser card, and a display module.
  • the processing module is respectively connected with the control end of the switch module and the sending card.
  • the first end of the switch module is used for connecting the power source, and the second end of the switch module is connected with at least one of the receiving card, the adapter card and the display module.
  • the sending card is used to send SDI signals to the processing module.
  • the processing module is used to determine whether the SDI signal is a low-level signal, and when the SDI signal is a low-level signal, it generates a first control signal and sends the first control signal to the switch module so that the switch module is in an off state.
  • the above-mentioned display screen detects the SDI signal output by the sending card through the processing module to determine whether the display component is working.
  • the processing module detects that the SDI signal is a low-level signal, it indicates that the display screen is in a standby state.
  • the processing module generates a first control signal, and sends the first control signal to the switch module, so that the switch module is off status. Even if at least one of the receiving card, adapter card and display module is disconnected from the power supply. In this way, the standby power consumption of the receiving card, the adapter card or the display module can be reduced, the standby loss of the display screen can be reduced, and the effect of saving power can be achieved.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

Un système de commande d'affichage et un écran d'affichage. Le système comprend une carte d'envoi (100), un module de traitement (200), un module de commutation (300) et un ensemble d'affichage (400). L'ensemble d'affichage (400) comprend au moins une carte de réception (410), une carte d'adaptateur (420), et un module d'affichage (430). Le module de traitement (200) est connecté séparément à l'extrémité de commande du module de commutation (300) et à la carte d'envoi (100). La première extrémité du module de commutation (300) est utilisée pour être connectée à une alimentation électrique (500), et la seconde extrémité du module de commutation (300) est connectée à au moins la carte de réception (410) et/ou la carte d'adaptateur (420) et/ou le module d'affichage (430). La carte d'envoi (100) est utilisée pour envoyer un signal SDI au module de traitement (200). Le module de traitement (200) est utilisé, lorsqu'il est détecté que le signal SDI est un signal de faible, pour générer un premier signal de commande, et pour envoyer le premier signal de commande au module de commutation (300), de telle sorte que le module de commutation (300) soit dans un état éteint.
PCT/CN2020/100655 2019-11-22 2020-07-07 Système de commande d'affichage et écran d'affichage WO2021098229A1 (fr)

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CN201911156246.7A CN110728938B (zh) 2019-11-22 2019-11-22 显示控制系统及显示屏

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