CN113554991A - A control system and method for an energy-saving display - Google Patents
A control system and method for an energy-saving display Download PDFInfo
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- CN113554991A CN113554991A CN202110940705.1A CN202110940705A CN113554991A CN 113554991 A CN113554991 A CN 113554991A CN 202110940705 A CN202110940705 A CN 202110940705A CN 113554991 A CN113554991 A CN 113554991A
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- 238000000034 method Methods 0.000 title claims description 14
- 238000004891 communication Methods 0.000 claims abstract description 13
- 239000004973 liquid crystal related substance Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 7
- 238000005265 energy consumption Methods 0.000 description 3
- 238000013507 mapping Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
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- 230000008092 positive effect Effects 0.000 description 1
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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
- G09G3/34—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 by control of light from an independent source
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
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Abstract
本发明涉及节能显示器的控制系统，包括：显示器主控MCU和视频处理模块，其包含视频处理模块、第二串口通讯模块和MCU模块；显示器显示屏，连接显示器主控MCU和视频处理模块，其包含背光LED模块，背光LED模块包含LED灯板和液晶屏，LED灯板安装在液晶屏的背部，背光LED模块采用直下式背光，LED灯板划分为多个LED区域；存储器模块，其连接显示器主控MCU和视频处理模块；背光LED驱动模块，连接显示器主控MCU和视频处理模块，其包含背光MCU模块，背光MCU模块通过背光LED模块控制多个LED区域；USB转串口模块，USB集线器模块，外部电脑。本发明根据用户选择的区域，关闭不在选择区域的对应的LED区域的LED灯，使显示器工作时减小电能的消耗。
The invention relates to a control system for an energy-saving display, comprising: a display main control MCU and a video processing module, which include a video processing module, a second serial port communication module and an MCU module; a display screen connected to the display main control MCU and the video processing module, which is Including a backlight LED module, the backlight LED module includes an LED light board and an LCD screen, the LED light board is installed on the back of the LCD screen, the backlight LED module adopts a direct backlight, and the LED light board is divided into multiple LED areas; memory module, which is connected to the display Main control MCU and video processing module; backlight LED driver module, which is connected to the display main control MCU and video processing module, which includes a backlight MCU module, and the backlight MCU module controls multiple LED areas through the backlight LED module; USB to serial port module, USB hub module , an external computer. According to the area selected by the user, the present invention turns off the LED lights in the corresponding LED area not in the selected area, so that the power consumption of the display is reduced when the display is working.
Description
Technical Field
The invention relates to the technical field of displays, in particular to a control system and a control method of an energy-saving display.
Background
Energy conservation is an important social awareness in the world today, and refers to a series of actions that reduce energy consumption and increase energy utilization as much as possible. The energy-saving definition proposed by the world energy commission in 1979 is: all measures which are feasible technically, reasonable economically and acceptable environmentally and socially are adopted to improve the utilization efficiency of energy resources. At present, people can not leave computers for work, entertainment, study and other activities. As display technology has advanced, computer displays come in different sizes (23.5 inches, 27 inches, 32 inches, 43 inches, 49 inches, 58 inches, etc.), different resolutions (1920 × 1080,2560 × 1440,2560 × 1080,3840 × 2160,3840 × 1080, etc.), and different display scales. (4:3, 16:9:, 21:9, 32:9, etc.). In fact, most of the display images are not displayed completely on the full screen when the computer display is used. When we browse a web page, the image resolution of the web page and the resolution of the display cannot be completely the same, so that the left and right sides of the web page image are both white sides or gray sides. When we see the network movie, the actual resolution of the movie and the resolution of the display cannot be completely consistent. Resulting in black borders on the top and bottom or left and right of the display. Both black and white edges are invalid image areas. The liquid crystal display is a light emitting device, the liquid crystal display is back light emitting, and the liquid crystal itself does not emit light. The power consumption of the backlight accounts for more than 70% of the total power consumption of the liquid crystal display. We are working constantly on web browsing and watching the backlight behind the white and black edges that appear in web movie images. Turning off this portion of the inactive image backlight may reduce the operating power consumption of the display. The technical problem to be solved by the invention is to turn off the backlight at the back of the invalid image (black or white) of the display. The consumption of electric power is reduced when the display is operated. Further, the display area of the display may be defined autonomously by the user. For example, a 32 inch 3840 x 2160 display may actually display 4 1920 x 1080 images at a 1:1 ratio. The user can freely define the display area of the user. And then turn off the backlight at the back of the non-display area to reduce the operating power consumption of the display.
The backlight of the current display is always working and consumes power.
Therefore, the control system and the control method of the energy-saving display are provided, a user can freely define the display area of the display, the display closes the corresponding backlight of the defined non-display area, and the working energy consumption of the display is reduced, so that the display is more energy-saving.
Disclosure of Invention
The invention aims to provide a control system and a control method of an energy-saving display, which are used for solving the problem of backlight energy consumption of a computer display.
In order to achieve the purpose, the invention adopts the technical scheme that: provided is a control system of an energy-saving display, which is characterized by comprising:
the display main control MCU and the video processing module comprise a video processing module, a second serial port communication module and an MCU module;
the display screen of the display is connected with the display main control MCU and the video processing module and comprises a backlight LED module, the backlight LED module comprises an LED lamp panel and a liquid crystal screen, the LED lamp panel is arranged at the back of the liquid crystal screen, the backlight LED module adopts direct type backlight, and the LED lamp panel is divided into a plurality of LED areas;
the memory module is connected with the display main control MCU and the video processing module;
the backlight LED driving module is connected with the display main control MCU and the video processing module and comprises a backlight MCU module which controls a plurality of LED areas through the backlight LED module;
the USB-to-serial port module comprises a first serial port communication module, and the first serial port communication module is connected with a second serial port communication module;
the USB concentrator module is connected with the USB-to-serial port module, external USB input equipment and an external computer;
and the display power supply module is used for supplying power.
Further, the device also comprises an indicator light.
Further, the LED lamp plate contains LED lamp and PCB board, and the LED lamp is installed on the PCB board uniformly.
Further, the external USB input device includes a USB keyboard and a USB mouse.
Further, the backlight LED driving module comprises a controller chip, and the controller is M481LGCAE-LQFP 4.
The invention also provides a control method of the energy-saving display, which is characterized in that the control system based on the energy-saving display carries out the following steps:
s1, determining a required display area of the display screen;
s2, the computer acquires and processes the coordinate data corresponding to the display area, and the backlight MCU module receives the data;
and S3, the backlight MCU module turns on the LED lamps in the LED areas corresponding to the selection areas and turns off the LED lamps in the LED areas not corresponding to the selection areas.
Further, in step S2, the MCU module of the display receives the coordinate data of the backlight sent by the computer, calculates the data of the corresponding backlight LED region, and sends the calculated data to the backlight MCU module of the backlight LED driving module.
Further, step S4 is included, and step S4 is included, the computer sends out reminding information to the display screen.
Compared with the prior art, the invention has the advantages and positive effects that: the invention can turn off the backlight at the back of the invalid image (black edge or white edge) of the display, turn on the LED lamp in the LED area corresponding to the selected area according to the area selected by the user, and turn off the LED lamp in the LED area not corresponding to the selected area, thereby reducing the consumption of electric energy when the display works.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a schematic view of a backlight LED module according to the present invention;
FIG. 3 is a circuit diagram of a backlight MCU module according to the present invention;
FIG. 4 is a circuit diagram of a portion of the backlight LED driving module according to the present invention;
FIG. 5 is a circuit diagram of the display main control MCU and the video processing module according to the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Fig. 1 to 5 are a system block diagram and a connection schematic diagram of a circuit pin of the present invention, and as shown in fig. 1 to 5, the present invention discloses a control system of an energy saving display, the system comprising: the display main control MCU and the video processing module comprise a video processing module, a second serial port communication module and an MCU module; the display screen of the display is connected with the display main control MCU and the video processing module and comprises a backlight LED module, the backlight LED module comprises an LED lamp panel and a liquid crystal screen, the LED lamp panel and the liquid crystal screen are equal in size, the LED lamp panel is installed at the back of the liquid crystal screen, the backlight LED module adopts direct type backlight, and the LED lamp panel is divided into a plurality of LED areas; the memory module is connected with the display main control MCU and the video processing module; the backlight LED driving module is connected with the display main control MCU and the video processing module and comprises a backlight MCU module which controls a plurality of LED areas through the backlight LED module; the USB-to-serial port module comprises a first serial port communication module, and the first serial port communication module is connected with a second serial port communication module; the USB concentrator module is connected with the USB-to-serial port module, external USB input equipment and an external computer; the display power supply module is used for providing power supply; the external computer is connected with the display main control MCU and the video processing module, the external computer transmits the coordinates of the input equipment to the MCU module of the display, the MCU module calculates the data of the corresponding LED area and transmits the data to the backlight MCU module, and the backlight MCU module controls the display screen of the display not to close the LED lamp of the corresponding LED area at the coordinates of the input equipment. The invention can turn off the backlight at the back of the invalid image (black edge or white edge) of the display, turn on the LED lamp in the LED area corresponding to the selected area according to the area selected by the user, and turn off the LED lamp in the LED area not corresponding to the selected area, thereby reducing the consumption of electric energy when the display works.
The principle is as follows: the energy-saving display system mainly comprises a liquid crystal display screen, a backlight LED driving module, a display main control MCU, a video processing module, a USB-to-serial port module, a USB concentrator module, a USB cable and an external computer which is a computer or a notebook computer or other upper computers. The backlight LED module comprises a plurality of LED lamps, and LED lamp plate and liquid crystal display size are equivalent, and the LED lamp plate is installed at the back of LCD screen, and is exactly the backlight of straight following formula, and the advantage of straight following formula backlight is high brilliance, good light-emitting visual angle, light utilization efficiency height, and the lateral income formula light source can not be adopted in this application. The LED lamp panel divides the LED lamps into a plurality of LED areas, each LED area is controlled by the backlight LED driving module to control the state (on, off and brightness) of the LED lamp in the area, and the backlight LED driving module receives the instruction of the backlight MCU module to control the state of the LED lamp in the area. The external computer is provided with application software which can detect the coordinates of the mouse on the display screen, namely the external computer can detect the coordinates of the display screen of an input device such as a mouse by a user, the application software of the external computer can calculate an area for displaying images on the display screen by acquiring the coordinates of 2 mouse points, the external computer sends the area information for displaying images to the MCU module of the display main control MCU and the video processing module through a USB cable, a USB concentrator module and a USB serial port module, the MCU module can calculate corresponding area information after acquiring the information data of the area for displaying images and sends the corresponding area information to the backlight MCU module of the backlight LED driving module, the backlight MCU module establishes a mapping relation between the driving of the LED lamps and the LED area, the brightness of each LED area can be respectively controlled, and the MCU module controls to close the LED lamps of the LED areas which are not corresponding to the coordinate area of the input device, and turning on the LED lamps in the LED areas corresponding to the coordinate areas of the input equipment.
The system further comprises an indicator light, wherein the indicator light is connected with the display main control MCU and the video processing module, and when the MCU module receives the coordinate area data, the instruction is sent out, and the indicator light is turned on to remind a user that the system works; when the display area is not selected, namely the system is not operated, the indicator light is turned off to remind the user of the working state of the system.
Further, as shown in fig. 2, the LED lamp panel includes LED lamp and PCB board, and the LED lamp is installed on the PCB board uniformly, adopts miniwatt mini LED lamp, adopts paster lamp pearl, and because power is little, the mini LED lamp is little simultaneously, and density is high, as long as with ordinary PCB board, the natural heat dissipation just can reach the requirement. The mini LED lamp patches are made to be higher in density, the LED areas corresponding to the selected areas of the display are more precise, the LED areas are more, the corresponding display areas are more, and the control is more precise.
Further, the external USB input device includes a USB keyboard and a USB mouse. The external USB input device functions to enable a user to select a display area through the external USB input device, which may be other input devices.
Further, the backlight LED driving module comprises a controller chip, and the controller is M481LGCAE-LQFP 4.
Further, as shown in fig. 4, the backlight LED driving module part circuit diagram is a driving circuit of 48 LED areas, and the backlight LED driving module part circuit is connected to the LED areas. Assuming a display of 27 inches and an LED lamp panel with 576 LED areas, there are 12 backlight LED driving module part circuits.
For example, the following steps are carried out: for example: a 27 inch display, the resolution of the display screen being 1920 x 1080, the size of the display area of the display screen being: 597.888mm (height) 336.312mm (width) LEDs are divided into independent 576 regions (32 zones in the width direction, 18 zones in the height direction). The backlight LED driving module may respectively establish a position coordinate mapping of each LED region, and when the display displays at 1920 × 1080 resolution, the corresponding coordinates of the mouse are: the horizontal coordinate is minimum 0 and maximum 1920, the vertical coordinate is minimum 0 and maximum 1080. The mouse horizontal coordinate 1920/32-60 corresponds to a horizontal LED area, and the mouse vertical coordinate 1080/18-60 corresponds to a vertical LED area. If the left and right images of the displayed image are white or black when the user browses the webpage for shopping, the user can select the image to be displayed by using input equipment such as a mouse and the like, the position coordinates of the displayed image are established, after external computer application software detects and obtains the mouse coordinate data of the user, the corresponding mouse coordinate parameter data is sent to the MCU module of the display main control MCU and the video processing module through the USB cable, the USB concentrator module and the USB serial port module, the MCU module calculates the data of the corresponding LED area, and sent to the backlight MCU module of the backlight LED driving module, the backlight MCU module closes the LED of the corresponding LED area which is not in the mouse selection area, and the LED in the corresponding LED area of the mouse selection area is turned on, so that the backlight MCU module turns off the LED lamp in the corresponding LED area of the white edge part of the display image, and the power consumption of the display can be saved.
The application also provides a control method of the energy-saving display, which is characterized in that the control system based on the energy-saving display carries out the following steps:
s1, determining a required display area of the display screen through input equipment; for example, when a user browses a webpage for shopping, the left and right pictures of the displayed image are white edges, and if a display area from the upper left corner to the lower right corner is selected by a mouse, the user can select the display area of the picture to be displayed by using input equipment (the mouse); the step of determining the required display area of the display screen comprises the steps of obtaining a request for determining the range of the display area issued by a user, issuing a mouse dragging instruction by the user, moving the mouse to a starting point, clicking the mouse until the mouse is dragged to an end point, determining the range of the display area by the two points of the starting point and the end point according to the coordinate positions of the starting point and the end point of the mouse, and sending the two coordinate data to computer application software. For example, an interface of application software is arranged on a display screen, three buttons of 'start', 'determining a display area range' and 'end' are arranged on the interface, the 'start' button is clicked by a mouse, a user moves the mouse to a starting point, the mouse is clicked by the mouse and dragged to an end point, the two mouse ranges of the starting point and the end point are the display area ranges, the 'determining the display area ranges' is clicked by the mouse, the step of determining the required display area of the display screen is completed, and then the computer application software sends the two mouse data of the corresponding starting point and the end point of the display area ranges to an MCU module of the display. The mouse can move freely after the required display area of the display screen is determined, the LED state of the backlight LED area cannot be influenced, and when the display screen needs to stop, the mouse clicks an 'end' button. The two-point mouse positions of the starting point and the end point are dragged instead of independently clicking the starting point and the end point to determine the display area range.
S2, the computer acquires and processes the coordinate data corresponding to the display area, and the backlight MCU module receives the data; the computer acquires coordinates corresponding to the display area, processes and transmits the coordinate data, and the backlight MCU module receives the coordinate data, wherein the backlight MCU module establishes a mapping relation between the drive of the LED lamp and the LED area, and the brightness of each LED area can be controlled respectively; the LED lamp panel divides the LED lamps into a plurality of areas, and each LED area is controlled by the backlight LED driving module to control the states (on, off and brightness) of the LED lamps in the area;
and S3, the backlight MCU module turns on the LED lamps in the LED areas corresponding to the selection areas and turns off the LED lamps in the LED areas not corresponding to the selection areas. The backlight MCU module turns on the LED lamps in the LED areas corresponding to the display area range according to the received coordinate data, turns off the LED lamps in the LED areas not corresponding to the selected display area, turns off the backlight at the back of the invalid image (black edge or white edge) of the display, and turns on the LED lamps in the LED areas corresponding to the selected area according to the area selected by the user.
Further, in step S2, the MCU module of the display receives the backlight coordinate data sent by the computer, and the MCU module of the display calculates the data of the corresponding backlight LED region and sends the data to the backlight MCU module of the backlight LED driving module. The MCU module of the display receives backlight coordinate data sent by an external computer, and the MCU module of the display is used for calculating data of a corresponding backlight LED area and sending the data to the backlight MCU module of the backlight LED driving module.
Further, step S4 is included, in which the computer sends out a reminder message to the display. The computer sends out reminding information to remind the user of the working state of the system.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings and the working principle of the present invention is explained, but the present invention is not limited thereto, and various changes made within the knowledge of those skilled in the art without departing from the gist of the present invention are within the scope of the present invention.
Claims (8)
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| CN202110940705.1A CN113554991A (en) | 2021-08-17 | 2021-08-17 | A control system and method for an energy-saving display |
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| CN101645255A (en) * | 2009-09-03 | 2010-02-10 | 青岛海信电器股份有限公司 | Liquid crystal display (LCD), television and method for displaying image pictures for liquid crystal display |
| CN111651133A (en) * | 2020-06-12 | 2020-09-11 | 广西世纪创新显示电子有限公司 | Intelligent control display system and control method |
| CN215770462U (en) * | 2021-08-17 | 2022-02-08 | 深圳市世纪创新显示电子有限公司 | Control system of energy-saving display |
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- 2021-08-17 CN CN202110940705.1A patent/CN113554991A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| TWM260958U (en) * | 2004-07-23 | 2005-04-01 | Blueexpert Technology Corp | USB wireless transmitter with USB expansion slot |
| CN101645255A (en) * | 2009-09-03 | 2010-02-10 | 青岛海信电器股份有限公司 | Liquid crystal display (LCD), television and method for displaying image pictures for liquid crystal display |
| CN111651133A (en) * | 2020-06-12 | 2020-09-11 | 广西世纪创新显示电子有限公司 | Intelligent control display system and control method |
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