CN114842780A - Display parameter adjusting method and large-screen device - Google Patents

Display parameter adjusting method and large-screen device Download PDF

Info

Publication number
CN114842780A
CN114842780A CN202110131938.7A CN202110131938A CN114842780A CN 114842780 A CN114842780 A CN 114842780A CN 202110131938 A CN202110131938 A CN 202110131938A CN 114842780 A CN114842780 A CN 114842780A
Authority
CN
China
Prior art keywords
ambient light
pixel point
frame
display area
screen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110131938.7A
Other languages
Chinese (zh)
Inventor
蔡超
杨钢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN202110131938.7A priority Critical patent/CN114842780A/en
Priority to PCT/CN2021/140921 priority patent/WO2022161053A1/en
Publication of CN114842780A publication Critical patent/CN114842780A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature

Landscapes

  • 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)
  • Liquid Crystal Display Device Control (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

The application provides a display parameter adjusting method and large-screen equipment. The large-screen equipment comprises a display area and four frames around the display area, and a plurality of ambient light sensors are arranged on each frame; the large-screen equipment calculates the ambient light data of each pixel point at the edge of the display area according to the ambient light data collected by the plurality of ambient light sensors of each frame of the display area; the large-screen device obtains the ambient light data of the pixels in the display area according to the ambient light data of the pixels in the display area projected to the pixels at the edge of the display area, and adjusts the backlight brightness and the image quality of the corresponding pixels according to the ambient light data of the pixels in the display area. The pixel level accurate adjustment of the large-screen equipment picture is realized, so that the backlight and the color of the large-screen equipment display picture are more adaptive to the surrounding environment.

Description

Display parameter adjusting method and large-screen device
Technical Field
The application relates to the technical field of terminals, in particular to a display parameter adjusting method and large-screen equipment.
Background
Generally, terminal devices such as smart phones, large-screen televisions, sound boxes with screens, high-end displays and the like are all provided with ambient light sensors for adjusting backlight intensity and color of display screens. The ambient light sensor on the terminal device is mostly in the same plane with the display screen. The ambient light sensor coats and is stamped the printing opacity piece, and the module of placing ambient light sensor still contains logical unthreaded hole or light guide part, and ambient light can penetrate directly and get into logical unthreaded hole with the reflection and catch by ambient light sensor. Therefore, the ambient light sensor can measure the brightness and the color temperature of the surrounding environment of the terminal equipment, so that the terminal equipment can adjust the backlight intensity and the color of the display screen according to the brightness and the color temperature of the environment.
Illustratively, the terminal device typically adjusts the display backlight intensity and color based on a single ambient light sensor. For large screen devices such as that shown in fig. 1 (larger display screen size devices such as large screen televisions), the ambient light sensor is small in size. The single ambient light sensor reflects local ambient light brightness and color temperature of the large-screen device, and is easily shielded, so that the ambient light brightness and color temperature around the whole large-screen device cannot be accurately reflected, the backlight intensity and color of the display screen of the terminal device cannot be matched with the ambient environment, and user experience is poor.
Disclosure of Invention
In order to solve the technical problem, the application provides a method for adjusting display parameters and a large-screen device. The technical scheme provided by the application can realize the pixel-level accurate adjustment of the backlight intensity and the picture quality of large-screen equipment.
In a first aspect, the present application provides a method of display parameter adjustment. The method comprises the following steps: the large-screen equipment acquires ambient light data of a first pixel point of a first frame of a first display area; acquiring ambient light data of a second pixel point of a second frame of the first display area; acquiring ambient light data of a third pixel point of a third frame of the first display area; acquiring ambient light data of a fourth pixel point of a fourth frame of the first display area; wherein the ambient light data includes at least one of an ambient light brightness and an ambient light color temperature; the large-screen equipment acquires the ambient light data of the pixel point A in the display area of the large-screen equipment according to the ambient light data of the first pixel point, the ambient light data of the second pixel point, the ambient light data of the third pixel point and the ambient light data of the fourth pixel point; the first pixel point is a pixel point projected from the pixel point A to a first frame of the first display area, the second pixel point is a pixel point projected from the pixel point A to a second frame of the first display area, the third pixel point is a pixel point projected from the pixel point A to a third frame of the first display area, and the fourth pixel point is a pixel point projected from the pixel point A to a fourth frame of the first display area; the large-screen equipment adjusts the backlight brightness and the image quality of a display picture of the pixel point A according to the ambient light data of the pixel point A; the image quality includes at least one of hue, and saturation.
According to the method, the large-screen device obtains the ambient light data of the pixels in the display area according to the ambient light data of the pixels in the display area projected to the pixels on the frame of the display area, and adjusts the backlight brightness and the image quality of the display picture of the corresponding pixels according to the ambient light data of each pixel in the display area. The pixel level accurate adjustment of the large-screen equipment picture is realized, so that the backlight and the color of the large-screen equipment display picture are more adaptive to the surrounding environment.
Wherein the large screen device display area is part or all of the first display area. When the large-screen device is used independently, the display area of the large-screen device is the whole of the first display area; when the large-screen devices are used in combination, the large-screen device display area is part of the first display area.
According to a first aspect, the large screen device obtaining ambient light data for a first pixel point of a first frame of a first display region comprises: the large-screen equipment acquires at least one ambient light data acquisition value of a first frame of a first display area; and acquiring the ambient light data of a first pixel point of a first frame of the first display area according to at least one ambient light data acquisition value of the first frame of the first display area. In the method, a plurality of ambient light sensors are arranged on each large-screen equipment frame; and the large-screen equipment calculates the ambient light data of each pixel point on the frame of the display area according to the ambient light data collected by the plurality of ambient light sensors of each frame of the display area.
The large-screen device obtains the ambient light data of the first pixel point of the first frame of the first display area according to at least one ambient light data acquisition value of the first frame of the first display area, and the ambient light data comprises: the large-screen device takes the average value of at least one ambient light data acquisition value of a first frame of a first display area as ambient light data of a first pixel point of the first frame of the first display area; or the large-screen device performs linear fitting according to at least one ambient light data acquisition value of the first frame of the first display area to acquire ambient light data of the first pixel point of the first frame of the first display area.
In one implementation, the performing, by the large-screen device, linear fitting according to at least one ambient light data collection value of the first frame of the first display region, and the obtaining the ambient light data of the first pixel point of the first frame of the first display region includes: the large screen device determines that the ambient light data of a first pixel point of a first frame of a first display area is kj + c; wherein j is the pixel value of the first pixel point of the first frame of the first display area;
Figure BDA0002925674750000021
LUX is a matrix representation of at least one ambient light data collection value of the first frame of the first display region, and n is the number of ambient light data collection values of the first frame of the first display region.
According to the first aspect, or any one of the above implementation manners of the first aspect, the method further includes: if the number of the first frame ambient light data acquisition values of the first display area is greater than or equal to a first threshold value and the current platform computing capacity of the large-screen device is smaller than a second threshold value, or the number of the first frame ambient light data acquisition values of the first display area is smaller than the first threshold value, taking the average value of at least one ambient light data acquisition value of the first frame of the first display area as the ambient light data of a first pixel point of the first frame of the first display area; and if the number of the first frame ambient light data acquisition values of the first display area is greater than or equal to a first threshold value and the current platform calculation capacity of the large-screen device is greater than or equal to a second threshold value, performing linear fitting according to at least one ambient light data acquisition value of the first frame of the first display area to obtain the ambient light data of the first pixel point of the first frame of the first display area.
According to the method, the average value method or the linear fitting method is adopted to calculate the ambient light data of the frame pixel points according to the number of the ambient light sensors of the frame of the first display area and the current calculation capacity of the large-screen equipment. By adopting the mean value method, the calculation process is simple, the calculation speed is high, and the response speed to the change of the ambient light is high. By adopting the linear fitting method, the change of the ambient light at the boundary can be better fitted in the local backlight adjusting process.
According to a first aspect or any one of the foregoing implementation manners of the first aspect, the acquiring, by the large-screen device, the ambient light data of the first pixel point of the first frame of the first display area includes: the large-screen equipment receives ambient light data of a first pixel point of a first frame of a first display area from another large-screen equipment; and the first pixel point of the first frame of the first display area is on the other large-screen device.
In the method, the large-screen device of the first display area frame calculates the ambient light data of the pixel points of the first display area frame, and the large-screen device in the first display area frame obtains the ambient light data of the pixel points of the first display area frame from the large-screen device of the first display area frame.
According to the first aspect, or any one of the above implementation manners of the first aspect, the acquiring, by the large-screen device, the ambient light data of the pixel point a in the display area of the large-screen device according to the ambient light data of the first pixel point, the ambient light data of the second pixel point, the ambient light data of the third pixel point, and the ambient light data of the fourth pixel point includes: the large screen device obtains the ambient light data of the pixel point a in the display area of the large screen device according to the following formula,
Figure BDA0002925674750000022
Figure BDA0002925674750000023
wherein, LUX (x，y) Is the ambient brightness value, CCT, of pixel A (x, y) (x，y) The ambient light color temperature value of the pixel point A (x, y); g is the mark of each frame of the first display area, L g The pixel distance between the pixel point A (x, y) and each frame of the first display region, E g The maximum pixel distance between a pixel point in the first display area and a frame of the first display area is obtained; LUX g Projecting the ambient brightness value, CCT, of the pixel point A (x, y) on the corresponding frame of the first display region g The pixel point A (x, y) corresponds to the frame projection image in the first display areaThe ambient light color temperature value of the prime point.
According to the first aspect, or any one of the above implementation manners of the first aspect, the method further includes: the large screen device determines that the first display region has a rectangular shape.
Wherein the large-screen device determining that the first display area is rectangular in shape includes: the large-screen equipment determines that the shape of the first display area is rectangular according to the connection state of all large-screen equipment spliced into the first display area; the connection state of the large-screen device includes at least one of: lower right connection, lower left connection, upper right connection, upper left connection, right connection, left connection, down connection, up connection, down connection, left connection, right connection, full connection, no connection.
In a second aspect, the present application provides a large screen device. The large screen device includes: a processor; a memory; and a computer program, wherein the computer program is stored on the memory, which when executed by the processor, causes the large screen device to perform the steps of: acquiring ambient light data of a first pixel point of a first frame of a first display area; acquiring ambient light data of a second pixel point of a second frame of the first display area; acquiring ambient light data of a third pixel point of a third frame of the first display area; acquiring ambient light data of a fourth pixel point of a fourth frame of the first display area; acquiring ambient light data of a pixel point A in a display area of large-screen equipment according to the ambient light data of a first pixel point, the ambient light data of a second pixel point, the ambient light data of a third pixel point and the ambient light data of a fourth pixel point; the large-screen device display area is part or all of the first display area; wherein the ambient light data includes at least one of ambient light brightness and ambient light color temperature; the first pixel point is a pixel point projected from the pixel point A to a first frame of the first display area, the second pixel point is a pixel point projected from the pixel point A to a second frame of the first display area, the third pixel point is a pixel point projected from the pixel point A to a third frame of the first display area, and the fourth pixel point is a pixel point projected from the pixel point A to a fourth frame of the first display area; adjusting the backlight brightness and the image quality of the pixel point A in the display picture of the first display area according to the ambient light data of the pixel point A; the image quality includes at least one of hue, and saturation.
According to a second aspect, obtaining ambient light data for a first pixel point of a first frame of a first display region comprises: acquiring at least one ambient light data acquisition value of a first frame of a first display area; and acquiring the ambient light data of a first pixel point of a first frame of the first display area according to at least one ambient light data acquisition value of the first frame of the first display area.
The method for acquiring the ambient light data of the first pixel point of the first frame of the first display area according to the at least one ambient light data acquisition value of the first frame of the first display area comprises the following steps: and taking the average value of at least one ambient light data acquisition value of the first frame of the first display area as ambient light data of the first pixel point of the first frame of the first display area.
Or performing linear fitting according to at least one ambient light data acquisition value of the first frame of the first display area to obtain ambient light data of the first pixel point of the first frame of the first display area.
In one implementation, performing linear fitting according to at least one ambient light data acquisition value of a first frame of a first display region to obtain ambient light data of a first pixel point of the first frame of the first display region includes: the ambient light data of a first pixel point of a first frame of a first display area is kj + c; wherein j is the pixel value of the first pixel point of the first frame of the first display area;
Figure BDA0002925674750000031
LUX is a matrix representation of at least one ambient light data collection value for the first frame of the first display region, and n is the number of ambient light data collection values for the first frame of the first display region.
According to the second aspect, or any implementation manner of the second aspect above, the large-screen device further performs: if the number of the first frame ambient light data acquisition values of the first display area is greater than or equal to a first threshold value and the current platform computing capacity of the large-screen device is smaller than a second threshold value, or the number of the first frame ambient light data acquisition values of the first display area is smaller than the first threshold value, taking the average value of at least one ambient light data acquisition value of the first frame of the first display area as the ambient light data of a first pixel point of the first frame of the first display area; and if the number of the first frame ambient light data acquisition values of the first display area is greater than or equal to a first threshold value and the current platform computing capacity of the large-screen device is greater than or equal to a second threshold value, performing linear fitting according to at least one ambient light data acquisition value of the first frame of the first display area to obtain the ambient light data of the first pixel point of the first frame of the first display area.
According to a second aspect, or any implementation manner of the second aspect above, the obtaining the ambient light data of the first pixel point of the first frame of the first display area includes: receiving ambient light data of a first pixel point of a first frame of a first display area from another large-screen device; and the first pixel point of the first frame of the first display area is on the other large-screen device.
According to the second aspect, or any one of the above implementation manners of the second aspect, acquiring the ambient light data of the pixel point a in the display area of the large-screen device according to the ambient light data of the first pixel point, the ambient light data of the second pixel point, the ambient light data of the third pixel point, and the ambient light data of the fourth pixel point includes: the ambient light data of the pixel point a in the display area of the large screen device is obtained according to the following formula,
Figure BDA0002925674750000041
Figure BDA0002925674750000042
wherein, LUX (x，y) Is the ambient brightness value, CCT, of pixel A (x, y) (x，y) The ambient light color temperature value of the pixel point A (x, y); g is the mark of each frame of the first display area, L g The pixel distance between the pixel point A (x, y) and each frame of the first display region, E g Is in the first display regionThe maximum pixel distance between the pixel point and the frame of the first display area; LUX g Projecting the ambient brightness value, CCT, of the pixel point A (x, y) on the corresponding frame of the first display region g The ambient light color temperature value of the pixel point is projected by the pixel point A (x, y) on the corresponding frame of the first display area.
According to the second aspect, or any implementation manner of the second aspect above, the large-screen device further performs: the shape of the first display area is determined to be rectangular.
According to a second aspect, or any implementation manner of the second aspect above, determining that the first display area is rectangular in shape includes: determining the shape of the first display area to be a rectangle according to the connection states of all large-screen devices spliced into the first display area; the connection state of the large-screen device includes at least one of: lower right connection, lower left connection, upper right connection, upper left connection, right connection, left connection, down connection, up connection, down connection, left connection, right connection, full connection, no connection.
Any one implementation manner of the second aspect and the second aspect corresponds to any one implementation manner of the first aspect and the first aspect, respectively. For technical effects corresponding to any one implementation manner of the second aspect and the second aspect, reference may be made to the technical effects corresponding to any one implementation manner of the first aspect and the first aspect, and details are not repeated here.
In a third aspect, the present application provides a method of display parameter adjustment. The method is applied to large-screen equipment, wherein the large-screen equipment comprises a first display screen, the first display screen comprises a first display area, and a first frame, a second frame, a third frame and a fourth frame which are arranged around the first display area; the first display area is in contact with the first frame, the second frame, the third frame and the fourth frame, and the edges of the first display area are a first edge, a second edge, a third edge and a fourth edge respectively; the first edge, the second edge, the first frame and the second frame are all parallel to the first direction, and the third edge, the fourth edge, the third frame and the fourth frame are all parallel to the second direction; m ambient light sensors are respectively distributed on the first frame and the second frame, N ambient light sensors are respectively distributed on the third frame and the fourth frame, and M and N are positive integers larger than 1; the method comprises the following steps: acquiring first ambient light data of a first pixel point, second ambient light data of a second pixel point, third ambient light data of a third pixel point and fourth ambient light data of a fourth pixel point; acquiring A ambient light data of a pixel point A in a first display area according to the first ambient light data, the second ambient light data, the third ambient light data and the fourth ambient light data; adjusting the backlight brightness and the image quality of the pixel point A according to the ambient light data A; the image quality comprises at least one of hue, hue and saturation; the first pixel point, the second pixel point, the third pixel point and the fourth pixel point are respectively one pixel point of the pixel point A projected to the first edge, the second edge, the third edge and the fourth edge.
According to the method, the large-screen device obtains the ambient light data of the pixels in the display area according to the ambient light data of the pixels in the display area projected to the pixels at the edge of the display area, and adjusts the backlight brightness and the image quality of the corresponding pixels according to the ambient light data of the pixels in the display area. The pixel level accurate adjustment of the large-screen equipment picture is realized, so that the backlight and the color of the large-screen equipment display picture are more adaptive to the surrounding environment.
According to the third aspect, first ambient light data of a first pixel point is acquired; the method comprises the following steps: acquiring a data acquisition value of at least one ambient light sensor in M ambient light sensors of a first frame; and acquiring first ambient light data of the first pixel point according to the data acquisition value.
In the method, a plurality of ambient light sensors are arranged on each large-screen equipment frame; and the large-screen equipment calculates the ambient light data of each pixel point on the edge of the display area according to the ambient light data collected by the plurality of ambient light sensors of each frame of the display area.
In one implementation mode, first ambient light data of a first pixel point is acquired according to a data acquisition value; the method comprises the following steps: and acquiring the mean value of the data acquisition values of the at least one ambient light sensor, wherein the mean value is the first ambient light data of the first pixel point.
In another implementation mode, first ambient light data of a first pixel point is acquired according to a data acquisition value; the method comprises the following steps: and performing linear fitting on the data acquisition value of at least one ambient light sensor to acquire first ambient light data of the first pixel point.
In one implementation, if the number of data acquisition values of the at least one ambient light sensor is greater than or equal to a first threshold and the processor computing power of the large-screen device is less than a second threshold; or the data acquisition value of at least one ambient light sensor is smaller than a first threshold value; taking the mean value of the data acquisition values of the at least one ambient light sensor as first ambient light data; and if the number of the data acquisition values of the at least one ambient light sensor is greater than or equal to a first threshold value and the calculation capacity of a processor of the large-screen device is greater than or equal to a second threshold value, performing linear fitting on the data acquisition values of the at least one ambient light sensor to acquire first ambient light data of the first pixel point.
According to the method, the average method or the linear fitting method is adopted to calculate the ambient light data of the border pixel points according to the number of the ambient light sensors of the border of the first display area and the current calculation capacity of the large-screen equipment. By adopting the mean value method, the calculation process is simple, the calculation speed is high, and the response speed to the change of the ambient light is high. By adopting the linear fitting method, the change of the ambient light at the boundary can be better fitted in the process of local backlight adjustment.
According to the third aspect or any one implementation manner of the third aspect, third ambient light data of a third pixel point is obtained; the method comprises the following steps: acquiring a data acquisition value of at least one ambient light sensor of the N ambient light sensors of the third frame; and acquiring third ambient light data of a third pixel point according to the data acquisition value.
In one implementation mode, linear fitting is performed on a data acquisition value of at least one ambient light sensor to acquire first ambient light data of a first pixel point; the method comprises the following steps: determining first ambient light data kj + c; wherein j is the pixel value of the first pixel point;
Figure BDA0002925674750000051
LUX is a matrix representation of data acquisition values for the at least one ambient light sensor, and n is the number of data acquisition values for the at least one ambient light sensor.
In a fourth aspect, the present application provides a method of display parameter adjustment. The method is applied to a large-screen device which communicates with another large-screen device; for example, the large-screen device communicates with another large-screen device in a wired manner, or the large-screen device communicates with another large-screen device in a wireless manner; the large-screen equipment comprises a first display screen, wherein the first display screen comprises a first display area, a first frame, a second frame, a third frame and a fourth frame which are arranged around the first display area; the first display area is in contact with the first frame, the second frame, the third frame and the fourth frame, and the edges of the first display area are a first edge, a second edge, a third edge and a fourth edge respectively; the first edge, the second edge, the first frame and the second frame are all parallel to the first direction, and the third edge, the fourth edge, the third frame and the fourth frame are all parallel to the second direction; m ambient light sensors are respectively distributed on the first frame and the second frame, N ambient light sensors are respectively distributed on the third frame and the fourth frame, and M and N are positive integers larger than 1; the other large-screen device comprises a second display screen, wherein the second display screen comprises a second display area, and a fifth frame, a sixth frame, a seventh frame and an eighth frame which are arranged around the second display area; the second display area is in contact with the fifth frame, the sixth frame, the seventh frame and the eighth frame, and the edges of the second display area are respectively a fifth edge, a sixth edge, a seventh edge and an eighth edge; the fifth edge, the sixth edge, the fifth frame and the sixth frame are all parallel to the first direction, and the seventh edge, the eighth edge, the seventh frame and the eighth frame are all parallel to the second direction; k ambient light sensors are distributed on the fifth frame and the sixth frame respectively, L ambient light sensors are distributed on the seventh frame and the eighth frame respectively, and K and L are positive integers larger than 1; the eighth frame is in contact with the third frame; that is, two large-screen devices are spliced into one display area.
The method comprises the following steps: acquiring first ambient light data of a first pixel point, second ambient light data of a second pixel point and fourth ambient light data of a fourth pixel point; receiving a first message; the first message comprises third ambient light data of a third pixel point provided by another large-screen device; acquiring ambient light data A of a pixel point A in a first display area according to the first ambient light data, the second ambient light data, the third ambient light data and the fourth ambient light data; adjusting the backlight brightness and the image quality of the pixel point A according to the ambient light data A; the image quality comprises at least one of hue, hue and saturation; the first pixel point, the second pixel point, the third pixel point and the fourth pixel point are respectively one pixel point of the pixel point A projected to the first edge, the second edge, the seventh edge and the fourth edge.
In the method, two large-screen devices are spliced into a display area; the large-screen device obtains the ambient light data of the pixels in the display area according to the ambient light data of the pixels in the display area projected to the pixels at the edge of the display area, and adjusts the backlight brightness and the image quality of the corresponding pixels according to the ambient light data of the pixels in the display area. The pixel level accurate adjustment of the large-screen equipment picture is realized, so that the backlight and the color of the large-screen equipment display picture are more adaptive to the surrounding environment.
According to the third aspect or the fourth aspect, or any implementation manner of the third aspect or the fourth aspect, the ambient light data a of the pixel point a in the first display area is acquired according to the first ambient light data, the second ambient light data, the third ambient light data, and the fourth ambient light data; the method comprises the following steps: the large screen device acquires the ambient light data a according to the following formula,
Figure BDA0002925674750000061
Figure BDA0002925674750000062
wherein, LUX (x，y) Is the ambient brightness value, CCT, of pixel A (x, y) (x，y) The ambient light color temperature value of the pixel point A (x, y); l is g The pixel distance of the pixel point A (x, y) from each selected frame, E g The maximum value of the minimum pixel distance from each pixel point of the first display area to the selected frame is obtained; LUX g The brightness value, CCT, of the environment light of the pixel point projected from the pixel point A (x, y) to the corresponding selected frame g The ambient light, color and temperature values of the pixel points projected to the corresponding selected frame by the pixel point A (x, y); g is the serial number of the selected frame. For example, the selected frames are a first frame, a second frame, a seventh frame and a fourth frame, and the serial numbers of the first frame, the second frame, the seventh frame and the fourth frame are 0, 1,2 and 3, respectively.
According to the third aspect or the fourth aspect, or any one implementation manner of the third aspect or the fourth aspect above, the first direction is perpendicular to the second direction; i.e. the shape of the display area is rectangular.
In a fifth aspect, the present application provides a large screen device, comprising: a processor; a memory; and a computer program, wherein the computer program is stored on the memory, which when executed by the processor, causes the large screen device to perform the steps of: acquiring first ambient light data of a first pixel point, second ambient light data of a second pixel point, third ambient light data of a third pixel point and fourth ambient light data of a fourth pixel point; acquiring A ambient light data of a pixel point A in a first display area according to the first ambient light data, the second ambient light data, the third ambient light data and the fourth ambient light data; adjusting the backlight brightness and the image quality of the pixel point A according to the ambient light data A; the image quality comprises at least one of hue, hue and saturation; the first pixel point, the second pixel point, the third pixel point and the fourth pixel point are respectively one pixel point of the pixel point A projected to the first edge, the second edge, the third edge and the fourth edge.
According to the fifth aspect, first ambient light data of a first pixel point is acquired; the method comprises the following steps: acquiring a data acquisition value of at least one ambient light sensor in M ambient light sensors of a first frame; and acquiring first ambient light data of the first pixel point according to the data acquisition value.
In one implementation mode, first ambient light data of a first pixel point is acquired according to a data acquisition value; the method comprises the following steps: and acquiring the mean value of the data acquisition values of the at least one ambient light sensor, wherein the mean value is the first ambient light data of the first pixel point.
In another implementation mode, first ambient light data of a first pixel point is acquired according to a data acquisition value; the method comprises the following steps: and performing linear fitting on the data acquisition value of at least one ambient light sensor to acquire first ambient light data of the first pixel point.
According to the fifth aspect, or any implementation manner of the above fifth aspect, the large-screen device further performs: if the number of the data acquisition values of the at least one ambient light sensor is greater than or equal to a first threshold value, and the calculation capacity of a processor of the large-screen device is smaller than a second threshold value; or the data acquisition value of at least one ambient light sensor is smaller than a first threshold value; taking the mean value of the data acquisition values of the at least one ambient light sensor as first ambient light data; and if the number of the data acquisition values of the at least one ambient light sensor is greater than or equal to a first threshold value and the calculation capacity of a processor of the large-screen device is greater than or equal to a second threshold value, performing linear fitting on the data acquisition values of the at least one ambient light sensor to acquire first ambient light data of the first pixel point.
According to the fifth aspect or any implementation manner of the fifth aspect, third ambient light data of a third pixel point is obtained; the method comprises the following steps: acquiring a data acquisition value of at least one ambient light sensor in the N ambient light sensors of the third frame; and acquiring third ambient light data of a third pixel point according to the data acquisition value.
According to the fifth aspect or any implementation manner of the fifth aspect, linear fitting is performed on a data acquisition value of at least one ambient light sensor, so as to obtain first ambient light data of a first pixel point; the method comprises the following steps: determining first ambient light data kj + c; wherein j is the pixel value of the first pixel point;
Figure BDA0002925674750000071
LUX is a matrix representation of data acquisition values for the at least one ambient light sensor, and n is the number of data acquisition values for the at least one ambient light sensor.
According to the fifth aspect or any implementation manner of the fifth aspect, the ambient light data a of the pixel point a in the first display area is acquired according to the first ambient light data, the second ambient light data, the third ambient light data, and the fourth ambient light data; the method comprises the following steps: the large screen device acquires ambient light data a according to the following formula,
Figure BDA0002925674750000072
Figure BDA0002925674750000073
wherein, LUX (x，y) Is the ambient brightness value, CCT, of pixel A (x, y) (x，y) The ambient light color temperature value of the pixel point A (x, y); l is g The pixel distance of the pixel point A (x, y) from each selected frame, E g The maximum value of the minimum pixel distance from each pixel point of the first display area to the selected frame is obtained; LUX g The brightness value, CCT, of the environment light of the pixel point projected from the pixel point A (x, y) to the corresponding selected frame g The ambient light, color and temperature values of the pixel points projected to the corresponding selected frame by the pixel point A (x, y); g is the serial number of the selected frame. For example, the selected frames are a first frame, a second frame, a seventh frame, and a fourth frame, and the serial numbers of the first frame, the second frame, the seventh frame, and the fourth frame are 0, 1,2, and 3, respectively.
Any one implementation of the fifth aspect corresponds to any one implementation of the third aspect. For technical effects corresponding to any one of the implementation manners of the fifth aspect and the fifth aspect, reference may be made to the technical effects corresponding to any one of the implementation manners of the third aspect and the third aspect, and details are not repeated here.
In a sixth aspect, the present application provides a computer-readable storage medium. The computer readable storage medium comprises a computer program which, when run on an electronic device, causes the electronic device to perform the method as described in the first aspect and any one of the implementations of the first aspect, the third aspect and any one of the implementations of the third aspect, or any one of the implementations of the fourth aspect and the fourth aspect.
Any one implementation manner of the sixth aspect and the sixth aspect corresponds to any one implementation manner of the first aspect and the first aspect, respectively. For technical effects corresponding to any one of the implementation manners in the sixth aspect and the sixth aspect, reference may be made to the technical effects corresponding to any one of the implementation manners in the first aspect and the first aspect, and details are not described here.
In a seventh aspect, a computer program product is provided. When running on a computer, the method causes the computer to perform the method as any one of the implementations of the first aspect and the first aspect, any one of the implementations of the third aspect and the third aspect, or any one of the implementations of the fourth aspect and the fourth aspect.
Any one of the implementations of the seventh aspect and the seventh aspect corresponds to any one of the implementations of the first aspect and the first aspect, respectively. For technical effects corresponding to any one of the implementation manners in the seventh aspect and the seventh aspect, reference may be made to the technical effects corresponding to any one of the implementation manners in the first aspect and the first aspect, and details are not repeated here.
Drawings
FIG. 1 is a schematic structural diagram of a large-screen device in the prior art;
fig. 2 is a schematic diagram of a hardware structure of a large-screen device to which a method for adjusting display parameters according to an embodiment of the present application is applied;
fig. 3A is a schematic structural diagram of a large-screen device to which a method for adjusting display parameters is applied according to an embodiment of the present disclosure;
fig. 3B is a schematic structural diagram of a sensor module in a large-screen device to which the method for adjusting display parameters is applied according to the embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a large-screen device to which a method for adjusting display parameters is applied according to an embodiment of the present application;
FIG. 5 is a flowchart illustrating a method for adjusting display parameters according to an embodiment of the present disclosure;
fig. 6 is a schematic diagram of a value range of a pixel point of a frame of a large-screen device in the method for adjusting display parameters according to the embodiment of the present application;
fig. 7 is a schematic diagram illustrating an example of obtaining an ambient light brightness value and an ambient light color temperature value of a pixel point in a display region in a method for adjusting display parameters according to an embodiment of the present application;
FIGS. 8A-9B are schematic diagrams of an example of splicing a plurality of large-screen devices;
fig. 10 is a schematic diagram illustrating a connection state of a large-screen device in a method for adjusting display parameters according to an embodiment of the present application;
FIG. 11 is a flowchart illustrating a method for adjusting display parameters according to an embodiment of the present disclosure;
fig. 12-17 are schematic diagrams illustrating an example of a large-screen splicing scene in a method for adjusting display parameters according to an embodiment of the present application;
FIG. 18 is a schematic diagram of a distributed control system for adjusting display parameters of a display area of a plurality of large-screen devices after splicing;
fig. 19 is a schematic structural component diagram of a large-screen device according to an embodiment of the present application.
Detailed Description
The terminology used in the following examples is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of this application and the appended claims, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, such as "one or more", unless the context clearly indicates otherwise. It should also be understood that in the following embodiments of the present application, "at least one", "one or more" means one or more than two (including two). The term "and/or" is used to describe an association relationship that associates objects, meaning that three relationships may exist; for example, a and/or B, may represent: a alone, both A and B, and B alone, where A, B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise. The term "coupled" includes direct coupling and indirect coupling, unless otherwise noted.
In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
The method for adjusting the display parameters can be applied to large-screen equipment provided with an ambient light sensor. Large-screen devices are defined in terms of the size of the display screen, and electronic devices having a display screen size greater than 32 inches are generally referred to as large-screen devices.
The large-screen device may include a smart home device (e.g., a smart television, a smart screen, a large screen, a smart speaker, etc.), a portable computer (e.g., a mobile phone, etc.), a handheld computer, a tablet computer, a notebook computer, a netbook, a Personal Computer (PC), an Augmented Reality (AR) \ Virtual Reality (VR) device, a vehicle-mounted computer, etc., which is not limited in this embodiment of the present application.
Illustratively, the large-screen device of the embodiment of the present application may include the structure shown in fig. 2. The large screen device 100 may include a processor 110, an external memory interface 120, an internal memory 121, a Universal Serial Bus (USB) interface 130, a charge management module 140, a power management module 141, a battery 142, an antenna, a wireless communication module 150, an audio module 160, a speaker 160A, a microphone 160B, a display screen 170, a sensor module 180, and the like. Wherein the sensor module 180 may include a pressure sensor, an air pressure sensor, a gyroscope sensor, an acceleration sensor, a magnetic sensor, a distance sensor, a proximity light sensor, a fingerprint sensor, a touch sensor, an ambient light sensor, and the like.
It is to be understood that the illustrated structure of the embodiment of the present application does not constitute a specific limitation to the large-screen apparatus 100. In other embodiments of the present application, large screen device 100 may include more or fewer components than shown, or some components may be combined, some components may be split, or a different arrangement of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.
Processor 110 may include one or more processing units. For example: the processor 110 may include a Central Processing Unit (CPU), an application processor, a modem processor, a Graphics Processing Unit (GPU), an Image Signal Processor (ISP), a controller, a video codec, a Digital Signal Processor (DSP), a baseband processor, and/or a neural-Network Processing Unit (NPU), among others. Wherein the different processing units may be separate components or may be integrated in one or more processors. In some embodiments, large screen device 100 may also include one or more processors 110. The controller can generate an operation control signal according to the instruction operation code and the time sequence signal to complete the control of instruction fetching and instruction execution.
A memory may also be provided in processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may hold instructions or data that have just been used or recycled by the processor 110. If the processor 110 needs to reuse the instruction or data, it can be called directly from the memory. Avoiding repeated accesses reduces the latency of the processor 110, thereby increasing the efficiency of the system.
In some embodiments, processor 110 may include one or more interfaces. The interface may include an integrated circuit (I2C) interface, an integrated circuit built-in audio (I2S) interface, a Pulse Code Modulation (PCM) interface, a universal asynchronous receiver/transmitter (UART) interface, a Mobile Industry Processor Interface (MIPI), a general-purpose input/output (GPIO) interface, a Subscriber Identity Module (SIM) interface, and/or a Universal Serial Bus (USB) interface, etc.
The USB interface 130 is an interface conforming to the USB standard specification, and may specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, or the like. The USB interface 130 may be used to connect a charger to charge the large-screen device 100, and may also be used to transmit data between the large-screen device 100 and a peripheral device. And the method can also be used for connecting a headset and playing audio through the headset. The interface may also be used to connect other electronic devices, such as AR devices and the like.
It should be understood that the interface connection relationship between the modules illustrated in the embodiment of the present application is only an exemplary illustration, and does not constitute a structural limitation on the large-screen device 100. In other embodiments of the present application, the large screen device 100 may also adopt different interface connection manners or a combination of multiple interface connection manners in the above embodiments.
The charging management module 140 is configured to receive charging input from a charger. The charger can be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 140 may receive charging input from a wired charger via the USB interface 130. In some wireless charging embodiments, the charging management module 140 may receive a wireless charging input through a wireless charging coil of the large screen device 100. The charging management module 140 may also supply power to the playback device through the power management module 141 while charging the battery 142.
The power management module 141 is used to connect the battery 142, the charging management module 140 and the processor 110. The power management module 141 receives an input of the battery 142 and/or the charge management module 140, and supplies power to the processor 110, the internal memory 121, the display 170, and the wireless communication module 150, etc. The power management module 141 may also be used to monitor parameters such as battery capacity, battery cycle count, battery state of health (leakage, impedance), etc. In some other embodiments, the power management module 141 may also be disposed in the processor 110. In other embodiments, the power management module 141 and the charging management module 140 may be disposed in the same device.
The antenna is used for transmitting and receiving electromagnetic wave signals. Each antenna in large screen device 100 may be used to cover a single or multiple communication bands. Different antennas can also be multiplexed to improve the utilization of the antennas.
The wireless communication module 150 may provide a solution for wireless communication applied to the large-screen device 100, including Wireless Local Area Networks (WLANs) (e.g., wireless fidelity (Wi-Fi) networks), bluetooth (bluetooth, BT), Global Navigation Satellite System (GNSS), Frequency Modulation (FM), Near Field Communication (NFC), Infrared (IR), and the like. The wireless communication module 150 may be one or more devices integrating at least one communication processing module. The wireless communication module 150 receives electromagnetic waves via an antenna, performs frequency modulation and filtering processing on electromagnetic wave signals, and transmits the processed signals to the processor 110. Wireless communication module 150 may also receive signals to be transmitted from processor 110, frequency modulate them, amplify them, and convert them into electromagnetic waves via an antenna for radiation.
The large screen device 100 implements a display function through the GPU, the display screen 170, and the application processor, etc. The GPU is a microprocessor for image processing, and is connected to the display screen 170 and an application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The processor 110 may include one or more GPUs that execute program instructions to generate or alter display information.
The display screen 170 is used to display images, video, and the like. The display screen 170 includes a display panel. The display panel may employ organic light-emitting diodes (OLEDs), active-matrix organic light-emitting diodes (AMOLEDs), flexible light-emitting diodes (FLED), miniature, Micro-oeld, Micro-oeled, quantum dot light-emitting diodes (QLEDs), multi-partition control backlight panels, and the like. In some embodiments, the large screen device 100 may include 1 or N display screens 170, with N being a positive integer greater than 1.
The internal memory 121 may include one or more Random Access Memories (RAMs) and one or more non-volatile memories (NVMs). The random access memory may include static random-access memory (SRAM), dynamic random-access memory (DRAM), synchronous dynamic random-access memory (SDRAM), double data rate synchronous dynamic random-access memory (DDR SDRAM), such as fifth generation DDR SDRAM generally referred to as DDR5 SDRAM, and the like. The nonvolatile memory may include a magnetic disk storage device, a flash memory (flash memory). The FLASH memory may include NOR FLASH, NAND FLASH, 3D NAND FLASH, etc. according to the operation principle, may include single-level cells (SLC), multi-level cells (MLC), three-level cells (TLC), four-level cells (QLC), etc. according to the level order of the memory cells, and may include universal FLASH memory (UFS), embedded multimedia memory cards (eMMC), etc. according to the storage specification. The random access memory may be read and written directly by the processor 110, may be used to store executable programs (e.g., machine instructions) of an operating system or other programs in operation, and may also be used to store data of users and applications, etc. The nonvolatile memory may also store executable programs, data of users and application programs, and the like, and may be loaded into the memory in advance for the processor 110 to directly read and write.
The external memory interface 120 may be used to connect an external nonvolatile memory, which is implemented to extend the storage capability of the large screen device 100. The external non-volatile memory communicates with the processor 110 through the external memory interface 120 to implement data storage functions. For example, files such as music, video, etc. are saved in an external nonvolatile memory.
The large screen device 100 may implement audio functions through the audio module 160, the speaker 160A, the microphone 160B, and the application processor, etc. Such as music playing, recording, etc.
The audio module 160 is used to convert digital audio information into an analog audio signal output and also used to convert an analog audio input into a digital audio signal. The audio module 160 may also be used to encode and decode audio signals. In some embodiments, the audio module 160 may be disposed in the processor 110, or some functional modules of the audio module 160 may be disposed in the processor 110.
The speaker 160A, also called a "horn", is used to convert the audio electrical signal into an acoustic signal. The large screen device 100 may play music through the speaker 160A.
The microphone 160B, also referred to as a "microphone," is used to convert sound signals into electrical signals. The user can input a sound signal to the microphone 160B by uttering sound through the human mouth near the microphone 160B. The large screen device 100 may be provided with at least one microphone 160B. In other embodiments, the large screen device 100 may be provided with two microphones 160B to achieve a noise reduction function in addition to collecting sound signals. In other embodiments, three, four or more microphones 160B may be further disposed on the large screen device 100 to collect sound signals, reduce noise, identify sound sources, perform directional recording, and so on.
The pressure sensor is used for sensing a pressure signal and converting the pressure signal into an electric signal. In some embodiments, the pressure sensor may be disposed on the display screen. There are many types of pressure sensors, such as resistive pressure sensors, inductive pressure sensors, capacitive pressure sensors, and the like. The capacitive pressure sensor may be a sensor comprising at least two parallel plates having an electrically conductive material. When a force acts on the pressure sensor, the capacitance between the electrodes changes. The large screen apparatus 100 determines the intensity of the pressure according to the change of the capacitance. When a touch operation is applied to the display screen 170, the large-screen apparatus 100 detects the intensity of the touch operation based on the pressure sensor. The large screen apparatus 100 can also calculate the position of the touch from the detection signal of the pressure sensor.
The air pressure sensor is used for measuring air pressure. In some embodiments, the large screen device 100 calculates altitude from barometric pressure values measured by a barometric pressure sensor, to assist in positioning and navigation.
The gyro sensor may be used to determine the motion attitude of the large screen device 100. In some embodiments, the angular velocity of the large screen device 100 about three axes (i.e., x, y, and z axes) may be determined by a gyroscope sensor. The gyroscope sensor can be used for shooting anti-shake, navigation, body feeling game scenes and the like.
The acceleration sensor can detect the magnitude of acceleration of the large-screen apparatus 100 in various directions (generally, three axes). The magnitude and direction of gravity can be detected when the large-screen device 100 is stationary; and determines the posture (e.g., landscape or portrait) of the large-screen device 100 according to the direction of gravity.
The magnetic sensor includes a hall sensor. The large screen device 100 may detect the opening and closing of the flip holster using a magnetic sensor. In some embodiments, when the large-screen device 100 is a flip phone, the large-screen device 100 may detect the opening and closing of the flip according to a magnetic sensor. And then according to the opening and closing state of the leather sheath or the opening and closing state of the flip cover, the automatic unlocking of the flip cover is set.
A distance sensor for measuring a distance. The large screen device 100 may measure distance by infrared or laser.
The proximity light sensor may include, for example, a Light Emitting Diode (LED) and a light detector, such as a photodiode. The light emitting diode may be an infrared light emitting diode. The large screen apparatus 100 emits infrared light to the outside through the light emitting diode. The large screen apparatus 100 detects infrared reflected light from a nearby object using a photodiode. When sufficient reflected light is detected, it can be determined that there is an object near the large screen apparatus 100. When insufficient reflected light is detected, the large-screen device 100 can determine that there is no object near the large-screen device 100. The large-screen device 100 can utilize the proximity light sensor to detect that the user holds the large-screen device 100 to talk near the ear, so as to automatically extinguish the display screen to achieve the purpose of saving power. The proximity light sensor can also be used in a holster mode, a pocket mode automatically unlocks and locks the screen.
The fingerprint sensor is used for collecting fingerprints. The large screen device 100 can utilize the collected fingerprint characteristics to achieve fingerprint unlocking, access an application lock, fingerprint photographing, fingerprint incoming call answering and the like.
Touch sensors, also known as "touch panels". The touch sensor may be disposed on the display screen 170, and the touch sensor and the display screen 170 form a touch screen, which is also called a "touch screen". The touch sensor is used to detect a touch operation applied thereto or nearby. The touch sensor can communicate the detected touch operation to the application processor to determine the touch event type. Visual output related to the touch operation may be provided through the display screen 170. In other embodiments, the touch sensor may be disposed on a surface of the large screen device 100 at a different location than the display screen 170.
The ambient light sensor is used for measuring ambient light brightness and color temperature. The brighter the ambient light is, the stronger the ambient light intensity detected by the ambient light sensor is; the darker the ambient light, the weaker the intensity of ambient light detected by the ambient light sensor. The color temperature represents the hue of the ambient light. The large-screen device 100 may adjust the backlight brightness of the display screen 170 according to the ambient light brightness measured by the ambient light sensor, and may adjust the image quality (e.g., hue, saturation, etc.) of the display screen 170 according to the ambient light color temperature measured by the ambient light sensor. Illustratively, the ambient light sensor can be classified into: a single ambient light device, a color temperature ambient light device, a three-in-one device comprising an ambient light function; ambient light sensors are classified into monochromatic ambient light devices and polychromatic ambient light devices, in terms of the manner in which ambient light is detected.
The method for adjusting the display parameters provided by the embodiment of the application can be applied to the large-screen device 100. A plurality of ambient light sensors are included on the large screen device 100. Each ambient light sensor measures a set of ambient light data (including ambient light level, color temperature, etc.). The large screen device 100 adjusts the backlight brightness of the display screen and the image quality of the display screen according to the ambient light data measured by the plurality of ambient light sensors, thereby realizing accurate adjustment at the pixel level.
In some examples, as shown in fig. 3A, at least one sensor module 11 is installed at each bezel of the large-screen device 100. The sensor module 11 adopts a lifting structure. For example, referring to fig. 3B, the sensor module 11 includes a box main body 111, a liftable module 112 and one or more ambient light sensing devices 113. The ambient light sensing device 113 may be the ambient light sensor described above; the ambient light sensor device 113 is fixed on the liftable module 112. The liftable module 112 can be driven by a motor to extend out of or retract into the box main body 111. The box main body 111 is embedded in the large screen apparatus 100. When the ambient light sensor device 113 is lifted up with the liftable module 112, ambient light data can be measured and obtained.
In some examples, as shown in fig. 4, one or more ambient light sensing devices 21 are fixed at each bezel of the large screen device 100, and the ambient light sensing devices 21 may be the above-described ambient light sensors. Generally, the number of ambient light sensing devices 21 is related to the size of the large screen apparatus 100, and the larger the size of the large screen apparatus 100, the larger the number of ambient light sensing devices 21. For example, the pitch of the ambient light sensor devices 21 is 50 cm; i.e. one ambient light sensing device 21 is arranged every 50cm at the bezel of the large screen device 100.
As shown in fig. 5, a method for adjusting display parameters provided in an embodiment of the present application may include:
s501, each ambient light sensor on the large-screen device collects ambient light data.
The ambient light data includes ambient light brightness, color temperature, and the like. The ambient light brightness represents the light intensity; the brighter the ambient light is, the stronger the ambient light intensity detected by the ambient light sensor is; the darker the ambient light, the weaker the intensity of ambient light detected by the ambient light sensor. The color temperature is a unit of measure of color components contained in light, and represents the hue of ambient light. A theoretical absolute black body heats up to a certain temperature to emit light with a spectral composition, called the color temperature at this temperature, measured in "K" (kelvin). For example, if the color of light emitted from a 100W bulb is the same as that of an absolute black body at 2527 ℃, the color temperature of light emitted from the bulb is (2527+273) K2800K.
Each ambient light sensor on the large-screen device periodically (for example, with an acquisition period of 0.1 second) acquires ambient light data, and acquires a corresponding ambient light brightness acquisition value and a corresponding color temperature acquisition value. Taking the upper frame of the large-screen device as an example, the upper frame of the large-screen device is provided with N ambient light sensors, wherein the ith ambient light sensor acquires and acquires the corresponding ambient light brightness acquisition value lux i And the collection value cct of the color temperature of the ambient light i 。
And each ambient light sensor on the large-screen equipment uploads the acquired ambient light brightness collection value and the acquired ambient light color temperature collection value to the processor.
S502, the processor of the large-screen device obtains an ambient light brightness value of a pixel point on a frame according to at least one ambient light brightness collection value of the frame of the large-screen device, and obtains an ambient light color temperature value of the pixel point on the frame according to at least one ambient light color temperature collection value of the frame.
The processor calculates an ambient light brightness value of a pixel point on a frame according to at least one ambient light brightness collection value on the frame, and acquires an ambient light color temperature value of the pixel point on the frame according to at least one ambient light color temperature collection value on the frame.
In one implementation manner, the average value of at least one ambient light brightness collection value on one frame is used as the ambient light brightness value of each pixel point on the frame, and the average value of at least one ambient light color temperature collection value on one frame is used as the ambient light color temperature value of each pixel point on the frame. By adopting the mean value method, the calculation process is simple, the calculation speed is high, and the response speed to the change of the ambient light is high.
In one implementation, according to at least one ambient light brightness acquisition value on a frame, performing linear fitting on the ambient light brightness value of each pixel point on the frame; and performing linear fitting on the ambient light color temperature value of each pixel point on the frame according to at least one ambient light color temperature acquisition value on the frame. By adopting the linear fitting method, the change of the ambient light at the boundary can be better fitted in the local backlight adjusting process.
It can be understood that in other implementation manners, the ambient light brightness value and the ambient light color temperature value of the pixel point on the frame may also be obtained by using methods such as quadratic linear fitting; this application is not repeated herein.
In some examples, the processor determines to calculate the ambient light brightness value and the ambient light color temperature value of a pixel point of a frame by using a mean value method or a linear fitting method according to the number N of ambient light sensors on the frame and a current platform Computing Power (CP) of the large-screen device. In some examples, if N is greater than or equal to the first threshold N Q (e.g., N) Q 5) and CP is less than a second threshold CP Q Or N is less than a first threshold N Q Adopting an average value method to obtain the brightness of at least one environment light on a frameAnd taking the mean value of the collection values as the ambient light brightness value of the frame pixel point, and taking the mean value of at least one ambient light color temperature collection value on a frame as the ambient light color temperature value of the frame pixel point. If N is greater than or equal to the first threshold value N Q And CP is greater than or equal to a second threshold CP Q Performing linear fitting on the ambient light brightness value of each pixel point on a frame by adopting a linear fitting method according to at least one ambient light brightness acquisition value on the frame; and performing linear fitting on the ambient light color temperature value of each pixel point on the frame according to at least one ambient light color temperature acquisition value on the frame.
Wherein, CP is the reciprocal of CPU occupancy of the current ambient light process (process for processing data uploaded by the ambient light sensor). CP (CP) Q Is the reciprocal of the set first CPU occupancy. For example, if the first CPU occupancy is set to 5%, the CP Q Is 20. When the CP is less than 20 (i.e. the CPU occupancy of the current ambient light process is greater than 5%), an averaging method with a smaller calculation amount is adopted. Exemplary, CP Q Is greater than or equal to 10 to avoid affecting the operation of other modules in the system.
In one example, one frame of the large-screen device is provided with N ambient light sensors, wherein the ith ambient light sensor acquires and acquires a corresponding ambient light brightness acquisition value
Figure BDA0002925674750000141
And the collected value of the color temperature of the ambient light
Figure BDA0002925674750000142
Calculating the ambient light brightness value of the border pixel point j by using the following formula
Figure BDA0002925674750000143
Calculating the ambient light color temperature value of the frame pixel point j by using the following formula
Figure BDA0002925674750000144
Figure BDA0002925674750000145
Figure BDA0002925674750000146
That is, if N>＝N Q And CP<CP Q Or N is<N Q (ii) a The mean method is used.
If N is present>＝N Q And CP>＝CP Q A linear fitting method is used.
The large-screen device comprises a left frame, a right frame, a left frame and a right frame, wherein g is used for identifying different frames of the large-screen device, specifically, g is 0 to represent the upper frame of the large-screen device, g is 1 to represent the right frame of the large-screen device, g is 2 to represent the lower frame of the large-screen device, and g is 3 to represent the left frame of the large-screen device. The value range of j is as shown in fig. 6, and each frame of the large-screen device starts to take a value from 0 pixel point in a clockwise direction. For example, the resolution of the display screen of the large-screen device is 1920x1080, the upper border is [0, 1920] from left to right, the lower border is [0, 1920] from right to left, the left border is [0, 1080] from bottom to top, and the right border is [0, 1080] from top to bottom.
k and c are luminance coefficients, and k 'and c' are color temperature coefficients. The following describes the determination method of the luminance coefficient and the color temperature coefficient in the linear fitting method, taking the luminance coefficients k and c as an example.
Take the upper frame of the large screen device as an example.
1. The upper frame is provided with N ambient light sensors, wherein the ith ambient light sensor acquires an ambient light brightness acquisition value
Figure BDA0002925674750000147
And the collected value of the color temperature of the ambient light
Figure BDA0002925674750000148
The N environmental light brightness collection values of the upper frame are respectively as follows:
Figure BDA0002925674750000149
n ambient lightsThe luminance collection values correspond to upper frame pixel points 1, … i, … n, respectively. That is, the sampling values of the upper frame sampling points 1, … i and … n are respectively
Figure BDA00029256747500001410
2. The error of the linear fitting equation at the upper frame pixel point i is defined as:
Figure BDA00029256747500001411
wherein the content of the first and second substances,
Figure BDA00029256747500001412
and linearly fitting the equation target estimation value at the pixel point i of the upper frame.
The purpose of the linear fit is to minimize the sum of errors at all sampling points, which is equivalent to the sum of variances, with the objective function:
Figure BDA00029256747500001413
definition of
Figure BDA00029256747500001414
By adopting a matrix representation method, the method comprises the following steps of,
Figure BDA00029256747500001415
the objective function can be expressed as
Figure BDA00029256747500001416
The derivative is taken on theta, and when the derivative is 0, the sum of the variances is minimal, i.e. the sum of the errors is minimal. Derivative of theta by 0, i.e. D T (D theta-LUX) ═ 0, and obtained by calculation
Figure BDA00029256747500001417
In an implementation manner, in the linear fitting method, the number of sampling samples is increased by adopting an interpolation manner, so as to obtain more accurate linear fitting data. Exemplary, ambient light brightness collection value lux for known sample points s s And ambient light color temperature acquisitionValue cct s And ambient light brightness collection value lux of sampling point t t And ambient light color temperature acquisition value cct t (ii) a Wherein s is<t. Adding a sampling point w(s) by interpolation<w<t), calculating and obtaining the ambient light brightness collection value lux of the sampling point w by using the following formula w Calculating and obtaining the ambient light color temperature acquisition value cct of the sampling point w by using the following formula w 。
Figure BDA0002925674750000151
Figure BDA0002925674750000152
S503, the processor of the large-screen device obtains the ambient light brightness value and the ambient light color temperature value of each pixel point in the display area according to the ambient light brightness value and the ambient light color temperature value of the frame pixel point.
A processor of the large-screen device performs weighted calculation according to the ambient light brightness value of each frame pixel point corresponding to the pixel point in the display area to obtain the ambient light brightness value of the pixel point in the display area; and obtaining the ambient light color temperature value of the pixel point in the display area according to the weighted calculation of the ambient light color temperature value of each frame pixel point corresponding to the pixel point in the display area.
The processor calculates the ambient light brightness value LUX of the pixel (x, y) in the display region according to the following formula [ + ] (x，y) Calculating the ambient light color temperature value CCT of the pixel point (x, y) in the display area according to the following formula (x，y) 。
Figure BDA0002925674750000153
Figure BDA0002925674750000154
Wherein L is g For each pixel (x, y) from the display areaPixel distance of each frame, L 0 Is the pixel distance, L, of the pixel point (x, y) from the upper border 1 Is the pixel distance, L, of the pixel point (x, y) from the right border 2 Is the pixel distance, L, of the pixel point (x, y) from the lower border 3 The pixel distance of the pixel point (x, y) from the left frame. E g The maximum pixel distance between a pixel point in the display area and a frame of the display area is obtained; when g is 0 or 2, E g The maximum pixel distance in the longitudinal direction of the large-screen equipment display area is the height H of the large-screen equipment display area; when g is 1 or 3, E g The maximum pixel distance in the transverse direction of the display area of the large-screen device, namely the width W of the display area of the large-screen device.
LUX g The ambient brightness value of the pixel point corresponding to the pixel point (x, y) on the corresponding frame; and the pixel point (x, y) corresponding to the pixel point (x, y) on the corresponding frame is the pixel point projected by the pixel point (x, y) on the corresponding frame. Wherein, LUX 0 The ambient brightness value of the pixel point x for projecting the pixel point (x, y) to the upper frame of the large-screen equipment
Figure BDA0002925674750000155
LUX 1 The ambient brightness value of the pixel point y for projecting the pixel point (x, y) to the right frame of the large-screen equipment
Figure BDA0002925674750000156
LUX 2 The ambient brightness value of the pixel point x for projecting the pixel point (x, y) to the lower frame of the large-screen equipment
Figure BDA0002925674750000157
LUX 3 The ambient brightness value of the pixel point y for projecting the pixel point (x, y) to the left frame of the large-screen equipment
Figure BDA0002925674750000158
CCT g Projecting the ambient light color temperature value of the pixel point (x, y) on the corresponding frame; wherein, CCT 0 The ambient light color temperature value of the pixel point x projected to the upper frame of the large-screen device
Figure BDA0002925674750000159
CCT 1 The ambient light, color and temperature values of the pixel point y projected to the right frame of the large-screen device
Figure BDA00029256747500001510
CCT 2 The ambient light color temperature value of the pixel point x projected to the lower frame of the large screen device
Figure BDA00029256747500001511
CCT 3 The ambient light color temperature value of the pixel point y projected to the left frame of the large-screen device
Figure BDA00029256747500001512
Illustratively, referring to fig. 7, the resolution of the large-screen device 100 is 1920 × 1080; go up frame and lower frame and be provided with 5 ambient light sensor respectively, left side frame and right frame are provided with 3 ambient light sensor respectively. The ambient light data collected by the 5 ambient light sensors on the upper frame of the large screen device 100 are respectively
Figure BDA00029256747500001513
Figure BDA00029256747500001514
Each ambient light sensor uploads the acquired ambient light data to the processor. The processor calculates the ambient light brightness value for the upper border pixel point 1,2, … 1920 using the above equation (i)
Figure BDA00029256747500001515
Calculating the ambient light color temperature value of the upper frame pixel point 1,2, … 1920 by using the formula-
Figure BDA00029256747500001516
In the same way, the above formula (i) can be used to calculate the ambient light brightness values of the right frame pixel points 1,2, … 1080
Figure BDA00029256747500001517
Calculating the ambient light color temperature value of the right frame pixel point 1,2, … 1080 by using the formula II
Figure BDA00029256747500001518
The ambient light brightness value of the lower frame pixel point 1,2, … 1920 is calculated using the above formula (i)
Figure BDA00029256747500001519
Calculating the ambient light color temperature value of the lower frame pixel point 1,2, … 1920 by using the formula 2
Figure BDA00029256747500001520
The ambient light brightness values of the left frame pixel points 1,2, … 1080 are calculated using the above formula (i)
Figure BDA00029256747500001521
Calculating the ambient light color temperature value of the left frame pixel point 1,2, … 1080 by using the formula II
Figure BDA00029256747500001522
The ambient brightness value of the pixel point (x, y) on the upper frame of the large-screen device corresponding to the pixel point x is
Figure BDA0002925674750000161
The ambient brightness value of the pixel point (x, y) on the right frame of the large-screen equipment corresponding to the pixel point y is
Figure BDA0002925674750000162
The ambient brightness value of the pixel point (x, y) corresponding to the pixel point (1920-x) on the lower frame of the large-screen equipment is
Figure BDA0002925674750000163
The ambient brightness value of the pixel point (x, y) corresponding to the pixel point (1080-y) on the left frame of the large-screen equipment is
Figure BDA0002925674750000164
According to the formula (v), the ambient brightness value LUX of the pixel point (x, y) (x,y) Is composed of
Figure BDA0002925674750000165
The ambient light, color and temperature values of the pixel point (x, y) on the upper frame of the large-screen device corresponding to the pixel point x are
Figure BDA0002925674750000166
The ambient light, color and temperature values of the pixel point (x, y) on the right frame of the large-screen equipment corresponding to the pixel point y are
Figure BDA0002925674750000167
The ambient light color temperature value of the pixel point (x, y) corresponding to the pixel point (1920-x) on the lower frame of the large-screen equipment is
Figure BDA0002925674750000168
The ambient light color temperature value of the pixel point (x, y) corresponding to the pixel point (1080-y) on the left frame of the large-screen equipment is
Figure BDA0002925674750000169
According to the formula, the ambient light color temperature value CCT of the pixel point (x, y) (x,y) Is composed of
Figure BDA00029256747500001610
S504, the processor of the large-screen device obtains backlight parameters of corresponding pixels according to the ambient light brightness values of the pixels in the display area of the large-screen device, and obtains image quality parameters of the corresponding pixels according to the ambient light color temperature values of the pixels in the display area of the large-screen device.
In one implementation, the ambient brightness value of the pixel point is converted into the backlight parameter of the pixel point according to a preset backlight parameter correspondence table. Illustratively, the backlight parameters include backlight brightness, contrast, and the like. Table 1 shows an example of a backlight parameter correspondence table.
TABLE 1
Figure BDA00029256747500001611
In one implementation, the ambient light, color and temperature values of the pixels are converted into the image quality parameters of the pixels according to a preset image quality parameter correspondence table. Illustratively, the image quality parameters include hue, color saturation, and the like. Table 2 shows an example of the image quality parameter correspondence table.
TABLE 2
Figure BDA00029256747500001612
Figure BDA0002925674750000171
And S505, the processor of the large-screen device adjusts the backlight of each pixel point according to the backlight parameter of the pixel point in the display area, and adjusts the image quality of the display image of the pixel point according to the image quality parameter of the pixel point in the display area.
According to the method for adjusting the display parameters, the ambient light brightness value and the ambient light brightness value of each pixel point on a frame are calculated according to data collected by a plurality of ambient light sensors on the frame, and the ambient light brightness value and the ambient light color temperature value of each pixel point in a display area are obtained according to the ambient light brightness values and the ambient light color temperature values of 4 frame pixel points; therefore, the backlight and the image quality of each pixel point can be adjusted according to the ambient light brightness value and the ambient light color temperature value of each pixel point, and the pixel-level display parameter adjustment is realized.
In some embodiments, multiple large screen devices as described above may be tiled together as a unitary display area.
In some examples, multiple large screen devices are tiled into a rectangular display area. For example, as shown in fig. 8A, 9 large-screen devices are assembled into a rectangular display area with 3 rows and 3 columns; the right side and the lower side of the 1 st row and 1 st column of the large-screen equipment are connected with other large-screen equipment, namely the large-screen equipment is connected in the lower right direction; the left side and the right side (and the lower side) of the large-screen equipment in the 1 st row and the 2 nd column are connected with other large-screen equipment, namely left-right connection; the left side and the lower side of the large-screen equipment in the 1 st row and the 3 st column are connected with other large-screen equipment, namely the left lower side is connected; the upper side and the lower side (and the right side) of the large-screen equipment in the 2 nd row and the 1 st column are connected with other large-screen equipment, namely, the large-screen equipment is connected up and down; the left and right sides, the upper side and the lower side of the large-screen equipment in the 2 nd row and the 2 nd column are connected with other large-screen equipment, namely, the large-screen equipment is fully connected; the upper side and the lower side (and the left side) of the large-screen equipment in the 2 nd row and the 3 nd column are connected with other large-screen equipment, namely, the large-screen equipment is connected up and down; the right side and the upper side of the large-screen equipment in the 3 rd row and the 1 st column are connected with other large-screen equipment, namely the upper right side; the left side and the right side (and the upper side) of the large-screen equipment in the row 3 and the column 2 are connected with other large-screen equipment, namely, the large-screen equipment is connected left and right; the left side and the upper side of the large-screen device in the 3 rd row and the 3 rd column are connected with other large-screen devices, namely the upper left side is connected. For example, as shown in fig. 8B, 3 large-screen devices are assembled into a rectangular display area with 1 row and 3 columns; the right side of the 1 st column of large-screen equipment is connected with other large-screen equipment, namely connected to the right; the left side and the right side of the large-screen equipment in the column 2 are connected with other large-screen equipment, namely, the large-screen equipment is connected left and right; the left side of the large-screen device in the 3 rd column is connected with other large-screen devices, namely, is connected to the left. For example, as shown in fig. 8C, 3 large-screen devices are assembled into a rectangular display area with 3 rows and 1 column; the lower side of the 1 st row of large-screen equipment is connected with other large-screen equipment, namely downwards; the upper side and the lower side of the large-screen equipment in the row 2 are connected with other large-screen equipment, namely, the large-screen equipment is connected up and down; the upper side of the large-screen equipment in the 3 rd row is connected with other large-screen equipment, namely, the large-screen equipment is connected upwards.
In some examples, multiple large screen devices are tiled into a non-rectangular display area. For example, as shown in fig. 9A, 4 large-screen devices are combined to form a non-rectangular display area; the connection states of the 4 large-screen devices are downward connection, up-down connection, right-up connection and left connection respectively. For example, as shown in fig. 9B, 5 large-screen devices are combined to form a non-rectangular display area; the connection states of the 5 large-screen devices are downward connection, rightward connection, full connection, leftward connection and upward connection respectively.
As shown in fig. 10, the connection state of the large screen device includes: lower right connection, lower left connection, upper right connection, upper left connection, right connection, left connection, down connection, up and down connection, left and right connection, full connection, no connection (i.e., no splice), and the like.
In one implementation, the connection state of the large screen device includes three types; the first type includes a lower right connection, a lower left connection, an upper right connection and an upper left connection; the second category includes right-handed connections and left-handed connections; the third category includes downward connections and upward connections. And if the connection states of the large-screen devices spliced into one display area comprise at least two of the first type, the second type and the third type, determining that the spliced display area is a non-rectangular display area.
The embodiment of the application also provides a method for adjusting the display parameters, which can be applied to the condition that a plurality of large-screen devices are spliced into a rectangular display area. As shown in fig. 11, the method includes:
s1101, the large-screen device determines the connection state of the large-screen device.
The large-screen device is any one of a plurality of large-screen devices spliced into a display area.
And the large-screen equipment determines the connection relation between the large-screen equipment and the surrounding large-screen equipment and determines the connection state of the large-screen equipment according to the connection relation between the large-screen equipment and other large-screen equipment.
For example, the large-screen device determines the posture of the large-screen device as a horizontal screen or a vertical screen according to a gravity sensor (e.g., the acceleration sensor), and then determines an upper frame, a lower frame, a left frame and a right frame of the large-screen device.
In one implementation mode, the large-screen device determines the connection relationship between the large-screen device and other large-screen devices according to the sensor module on the frame, and determines the connection state of the large-screen device according to the connection relationship between the large-screen device and other large-screen devices. In one example, as shown in fig. 12, 9 large-screen devices are assembled into a rectangular display area with 3 rows and 3 columns, and each large-screen device has at least one sensor module on its upper frame, lower frame, left frame and right frame. And the large-screen equipment determines whether the frame is connected with other large-screen equipment or not according to the sensor module on the frame. Illustratively, the large screen device of row 1, column 1 is denoted as (1, 1). The large screen device (1, 1) determines that the large screen device is a transverse screen according to the gravity sensor, and determines an upper frame, a lower frame, a left frame and a right frame. The large-screen equipment (1, 1) determines that the sensor module on the upper frame is lifted, and determines that the upper frame is not connected with other large-screen equipment; the large-screen equipment (1, 1) determines that the sensor module on the left frame is lifted, and determines that the left frame is not connected with other large-screen equipment; the large-screen equipment (1, 1) determines that the sensor module on the lower frame is not lifted, and determines that the lower frame is connected with other large-screen equipment; the large-screen equipment (1, 1) determines that the sensor module on the right frame is not lifted, and determines that the right frame is connected with other large-screen equipment; thus, the large-screen device (1, 1) determines that its connection state is the lower-right connection. The large screen device (1, 2) determines that the large screen device is a transverse screen according to the gravity sensor, and determines an upper frame, a lower frame, a left frame and a right frame. The large-screen equipment (1, 2) determines that the sensor module on the upper frame is lifted, and determines that the upper frame is not connected with other large-screen equipment; the large-screen equipment (1, 2) determines that the sensor module on the left frame is not lifted, and determines that the left frame is connected with other large-screen equipment; the large-screen equipment (1, 2) determines that the sensor module on the lower frame is not lifted, and determines that the lower frame is connected with other large-screen equipment; the large-screen equipment (1, 2) determines that the sensor module on the right frame is not lifted, and determines that the right frame is connected with other large-screen equipment; thus, the large-screen device (1, 2) determines that its connection state is left-right connection. By the same method, the large-screen equipment (1, 3) determines that the connection state is left-down connection; the large-screen equipment (2, 1) determines that the connection state is up-down connection; the large-screen equipment (2, 2) determines that the connection state is full connection; the large-screen equipment (2, 3) determines that the connection state is up-down connection; the large-screen equipment (3, 1) determines that the connection state is the upper right connection; the large-screen equipment (3, 2) determines that the connection state is left-right connection; the large-screen device (3, 3) determines that its connection state is the upper left connection.
In another implementation mode, the large-screen device determines the connection relationship between the large-screen device and other large-screen devices according to the contact points on the frame, and determines the connection state of the large-screen device according to the connection relationship between the large-screen device and other large-screen devices. In one example, as shown in fig. 13, 9 large-screen devices are assembled into a rectangular display area with 3 rows and 3 columns, and each large-screen device has at least one touch point on its upper frame, lower frame, left frame and right frame. The large-screen device determines whether the border is connected with other large-screen devices according to the connection format (including high level and low level) of the contacts on the border. For example, if a contact on the bezel is high, indicating a switch on, the large screen device determines that the bezel is connected to other large screen devices. Take the large screen device of row 3, column 1 as an example. The large screen device (3, 1) determines that the large screen device is a transverse screen according to the gravity sensor, and determines an upper frame, a lower frame, a left frame and a right frame. The large-screen equipment (3, 1) determines that the contact of the upper frame is in a high level and determines that the upper frame is connected with other large-screen equipment; determining that a contact point of the right frame is a high level, and determining that the right frame is connected with other large-screen equipment; thus, the large-screen device (3, 1) determines that its connection state is the upper-right connection. By the same method, the large-screen equipment (1, 1) determines that the connection state is the lower-right connection; the large-screen equipment (1, 2) determines that the connection state is left-right connection; the large-screen equipment (1, 3) determines that the connection state is left-down connection; the large-screen equipment (2, 1) determines that the connection state is up-down connection; the large-screen equipment (2, 2) determines that the connection state is full connection; the large-screen equipment (2, 3) determines that the connection state is up-down connection; the large-screen equipment (3, 2) determines that the connection state is left-right connection; the large-screen device (3, 3) determines that its connection state is the upper left connection.
S1102, the large-screen device obtains the connection state of other large-screen devices which are spliced with the large-screen device to form a display area, and the shape of the spliced display area is determined according to the connection state of all the large-screen devices in the spliced display area. If the large-screen device determines that the shape of the spliced display area is rectangular, executing S1103; and if the large-screen equipment determines that the spliced display area is in a non-rectangular shape, ending the display parameter adjusting process.
In one implementation, as shown in FIG. 14, 9 large screen devices are tiled into a 3-row, 3-column rectangular display area. Wired communication connection or wireless communication connection is established between two adjacent large-screen devices, and 9 large-screen devices form a local area network; thus, the 9 large-screen devices can communicate with each other. And each large-screen device broadcasts the connection state of the large-screen device in the local area network, so that each large-screen device acquires the connection states of all large-screen devices in the local area network.
The large-screen device is any one of the large-screen devices in the local area network. And if the large-screen device determines that the connection states of all large-screen devices in the local area network comprise at least two of the first type, the second type and the third type, determining that the spliced display area is a non-rectangular display area. And if the large-screen device determines that the connection states of all large-screen devices in the local area network comprise one of the first type, the second type and the third type, determining that the spliced display area is a rectangular display area.
And S1103, the large-screen device acquires the physical position of the large-screen device in the spliced display area.
In one implementation, the large-screen device determines its physical location according to its connection status and the physical location and connection status of the large-screen device connected to it. Take the spliced display area shown in fig. 8A as an example. The large-screen device (1, 1)) whose own connection state is connected at the lower right is determined to have its own physical position as the 1 st row and the 1 st column. The large-screen equipment (1, 1) sends a first message to the large-screen equipment connected with the large-screen equipment, wherein the first message comprises information such as the physical position (row a, column b) and the connection state of the large-screen equipment of a sender. Receiving a first message of the large-screen equipment (1, 1) by the large-screen equipment (1, 2) connected with the large-screen equipment (1, 1), acquiring the physical position of the large-screen equipment (1, 1) as a line 1 and a column 1 according to the first message, wherein the connection state is right-down connection; the large-screen equipment (1, 2) determines the physical position of the large-screen equipment (1, 1) as the No. 1 row and No. 2 column according to the connection state (left-right connection) of the large-screen equipment and the physical position and the connection state of the large-screen equipment (1, 1). The method comprises the steps that large-screen equipment (2, 1) connected with the large-screen equipment (1, 1) receives a first message of the large-screen equipment (1, 1), the physical position of the large-screen equipment (1, 1) is acquired as a line 1 and a column 1 according to the first message, and the connection state is right-down connection; the large-screen equipment (2, 1) determines the physical position of the large-screen equipment (1, 1) as the No. 2 line and the No. 1 column according to the connection state (up-down connection) of the large-screen equipment and the physical position and the connection state of the large-screen equipment. The large-screen equipment (1, 2) sends a first message to the large-screen equipment connected with the large-screen equipment, wherein the first message comprises information such as the physical position (the 1 st row and the 2 nd column) and the connection state of the large-screen equipment (1, 2). Receiving a first message of the large-screen equipment (1, 2) by the large-screen equipment (1, 3) connected with the large-screen equipment (1, 2), acquiring the physical position of the large-screen equipment (1, 2) as a line 1 and a column 2 according to the first message, wherein the connection state is left-right connection; and the large-screen equipment (1, 3) determines the physical position of the large-screen equipment (1, 2) to be the 1 st row and the 3 rd column according to the connection state of the large-screen equipment (1, 3) (left-lower connection), the physical position and the connection state of the large-screen equipment. The large-screen equipment (2, 2) connected with the large-screen equipment (1, 2) receives a first message of the large-screen equipment (1, 2), acquires the physical position of the large-screen equipment (1, 2) as a line 1 and a column 2 according to the first message, and the connection state is left-right connection; the large-screen equipment (2, 2) also receives a first message of the large-screen equipment (2, 1), the physical position of the large-screen equipment (2, 1) is acquired as the 2 nd row and the 1 st column according to the first message of the large-screen equipment (2, 1), and the connection state is up-down connection; the large-screen equipment (2, 2) determines the physical position of the large-screen equipment (1, 2) as the 2 nd row and the 2 nd column according to the connection state (full connection) of the large-screen equipment, the physical position and the connection state of the large-screen equipment and the physical position and the connection state of the large-screen equipment (2, 1). By analogy, each large-screen device acquires the physical position of the large-screen device in the spliced display area.
In another implementation, when a plurality of large-screen devices are spliced into one display area, the physical position of each large-screen device is preset. Each large screen device determines its own physical location based on administrator input.
S1104, the large-screen device obtains the pixel range of the large-screen device in the spliced display area and the pixel position of each pixel point in the spliced display area in the pixel range.
A plurality of large-screen devices are spliced together, and the pixel range of a display area is enlarged after splicing. Illustratively, fig. 15 is a schematic diagram of pixel area division after large-screen device splicing. And the single large-screen device is spliced in a 3x3 mode. The pixels of the single large-screen device before splicing are 1920x1080, and the pixels of the display area after splicing are (1920 × 3) × (1080 × 3), namely 5760x 3240. The pixel distance between the pixel point and the frame of the display area is expanded after splicing.
The division of the pixel area of the large-screen device after splicing is shown in fig. 15, and the pixel range of the large-screen device (1, 1) after splicing is (0-1920) x (0-1080). The pixel range of the long side of the spliced large-screen device (1, 2) is ((0+1920) - (1920+1920)), namely (1920-3840); the short edge pixel range is unchanged; after splicing, the pixel range of the large-screen device (1, 2) is (1920-3840) x (0-1080). The pixel range of the long sides of the large-screen devices (2 and 1) is unchanged after splicing; the short-side pixel range is ((0+1080) to (1080+1080)), namely (1080 to 2160); after splicing, the pixel range of the large-screen device (2, 1) is (0-1920) x (1080-2160). By analogy, the pixel range of the spliced large-screen equipment (1, 3) is (3840-5760) x (0-1080); the pixel range of the large-screen device (2, 2) after splicing is (1920-3840) x (1080-2160); the pixel range of the spliced large-screen equipment (2, 3) is (3840-5760) x (1080-2160); the pixel range of the large-screen equipment (3, 1) after splicing is (0-1920) x (2160-3240); the pixel range of the spliced large-screen equipment (3, 2) is (1920-3840) x (2160-3240); the pixel range of the large-screen equipment (3, 3) after splicing is (3840-5760) x (2160-3240).
And the large-screen equipment determines the pixel position of each pixel point in the spliced display area. For example, when the large-screen device is tiled to the row a and the column b of the display area, the pixel position of the pixel point (x, y) on the large-screen device in the tiled display area is (x + (b-1) × 1920, y + (a-1) × 1080). As shown in fig. 15, the large-screen device is tiled to the 2 nd row and 2 nd column, and the pixel position of the pixel point (x, y) on the large-screen device in the tiled display area is (x +1920, y + 1080).
S1105, the large-screen device obtains the ambient light brightness value and the ambient light color temperature value of each pixel point in the display area of the large-screen device.
And each ambient light sensor on each frame of the spliced display area acquires ambient light data.
In some embodiments, the large-screen devices positioned in the uppermost row in the spliced display area respectively send the ambient light data collected by the frame ambient light sensor on the large-screen devices to other large-screen devices in the local area network. Therefore, any large-screen device in the local area network acquires the ambient light data acquired by all ambient light sensors on the upper frame of the spliced display area. And the large-screen equipment positioned in the rightmost column respectively sends the ambient light data acquired by the ambient light sensor on the right frame of the large-screen equipment to other large-screen equipment in the local area network. Therefore, any large-screen device in the local area network acquires the ambient light data collected by all ambient light sensors on the right frame of the display area after splicing. And the large-screen equipment positioned in the bottom row respectively sends the ambient light data acquired by the ambient light sensor of the lower frame to other large-screen equipment in the local area network. Therefore, any large-screen device in the local area network acquires the ambient light data acquired by all ambient light sensors on the lower frame of the display area after splicing. And the large-screen equipment positioned in the leftmost line respectively sends the ambient light data acquired by the left frame ambient light sensor to other large-screen equipment in the local area network. Therefore, any large-screen device in the local area network acquires the ambient light data collected by all ambient light sensors on the left frame of the display area after splicing.
And any large-screen device in the local area network calculates the ambient light brightness value of the pixel point on the frame according to at least one ambient light brightness acquisition value on one frame of the spliced display area, and acquires the ambient light color temperature value of the pixel point on the frame according to at least one ambient light color temperature acquisition value on one frame of the spliced display area.
In one implementation manner, the average value of at least one ambient light brightness collection value on one frame of the spliced display area is used as the ambient light brightness value of a pixel point on the frame, and the average value of at least one ambient light color temperature collection value on one frame of the spliced display area is used as the ambient light color temperature value of the pixel point on the frame. By adopting the mean value method, the calculation process is simple, the calculation speed is high, and the response speed to the change of the ambient light is high.
In one implementation mode, according to at least one collected value of the environmental light brightness on one frame of the spliced display area, linear fitting is carried out on the environmental light brightness value of each pixel point on the frame; and performing linear fitting on the ambient light color temperature value of each pixel point on a frame according to at least one ambient light color temperature acquisition value on the frame of the spliced display area. By adopting the linear fitting method, the change of the ambient light at the boundary can be better fitted in the local backlight adjusting process.
It can be understood that in other implementation manners, the ambient light brightness value and the ambient light color temperature value of the pixel points on the frame of the display area after splicing can be calculated by adopting methods such as quadratic linear fitting; this application is not repeated herein.
The specific processes of the mean method and the linear fitting method may be described with reference to the mean method and the linear fitting method of a single large-screen device in S502, and are not described herein again.
For example, referring to fig. 16, a single large-screen device with 1920 × 1080 pixels is tiled by 3 × 3, and the tiled display area has 5760 × 3240 pixels. The upper frame and the lower frame of the single large-screen device are respectively provided with 3 ambient light sensors, the upper frame of the spliced display area is provided with 9 ambient light sensors, and the lower frame of the spliced display area is provided with 9 ambient light sensors; the left frame and the right frame of a single large-screen device are respectively provided with 2 ambient light sensors, the left frame of the display area after splicing is provided with 6 ambient light sensors, and the right frame of the display area after splicing is provided with 6 ambient light sensors. Each ambient light sensor collects ambient light data. Exemplary, 3 ambient light sensors of the bezel on the large screen device (1, 1) collect ambient light data
Figure BDA0002925674750000211
And
Figure BDA0002925674750000212
the large screen device (1, 1) sends ambient light data to other large screen devices in the local area network
Figure BDA0002925674750000213
And
Figure BDA0002925674750000214
the 3 ambient light sensors on the upper frame of the large-screen device (1, 2) collect ambient light data
Figure BDA0002925674750000215
And
Figure BDA0002925674750000216
the large screen device (1, 2) sends ambient light data to other large screen devices in the local area network
Figure BDA0002925674750000217
And
Figure BDA0002925674750000218
the 3 ambient light sensors on the upper frame of the large-screen device (1, 3) collect ambient light data
Figure BDA0002925674750000219
Figure BDA00029256747500002110
And
Figure BDA00029256747500002111
the large screen device (1, 3) sends ambient light data to other large screen devices in the local area network
Figure BDA00029256747500002112
And
Figure BDA00029256747500002113
therefore, each large-screen device in the local area network acquires the ambient light data acquired by the frame ambient light sensor on the spliced display area
Figure BDA00029256747500002114
Figure BDA00029256747500002115
And
Figure BDA00029256747500002116
similarly, each large-screen device in the local area network also acquires the ambient light data collected by the ambient light sensor on the right frame of the display area after splicing
Figure BDA00029256747500002117
And
Figure BDA00029256747500002118
and also acquiring the ambient light data acquired by the frame ambient light sensor in the spliced display area
Figure BDA00029256747500002119
Figure BDA00029256747500002120
Figure BDA00029256747500002121
And
Figure BDA00029256747500002122
and also acquiring the ambient light data acquired by the ambient light sensor on the left frame of the spliced display area
Figure BDA00029256747500002123
And
Figure BDA00029256747500002124
any large-screen device in the domain network can calculate the ambient light brightness value of the pixel point of the frame according to at least one ambient light brightness acquisition value of one frame of the spliced display area, and calculate the ambient light color temperature value of the pixel point of the frame according to at least one ambient light color temperature acquisition value of one frame of the spliced display area; and calculating the ambient light brightness value and the ambient light color temperature value of the pixel point in the pixel range of the large-screen device. For example, the large-screen device calculates the ambient light brightness value of the pixel point within the pixel range of the large-screen device according to a formula (v), and calculates the ambient light color temperature value of the pixel point within the pixel range of the large-screen device according to a formula (sixty). Wherein, the formula is fifth and sixth 0 The distance between a pixel point (x, y) and a frame on a display area after splicing is L 1 The pixel distance L of the pixel point (x, y) from the right frame of the display area after splicing 2 The distance between a pixel point (x, y) and the lower frame of the display area after splicing is L 3 For the left border of the display area after the pixel (x, y) distance splicingPixel distance. When g is 0 or 2, E g The maximum longitudinal distance of the display area, namely the height of the spliced display area; when g is 1 or 3, E g The maximum distance in the lateral direction of the display area, i.e. the width of the display area after splicing.
Illustratively, the large-screen device (2, 2) where the pixel point (2040, 1900) is located obtains the ambient light data collected by the ambient light sensors of the frames of the spliced display area from the large-screen device at the frame of the spliced display area. The large-screen device (2, 2) calculates the ambient light brightness value of the frame pixel points 1,2, … 1920, … 2x1920 and … 3x1920 in the spliced display area by using the formula (i)
Figure BDA00029256747500002125
Calculating the ambient light, color and temperature values of the frame pixel points 1,2, … 1920, … 2x1920 and … 3x1920 in the spliced display area by using the formula II
Figure BDA00029256747500002126
Calculating the ambient light brightness value of the right frame pixel points 1,2, … 1080 … 2x1080 and … 3x1080 of the spliced display area by using the formula (I)
Figure BDA00029256747500002127
Calculating the ambient light color temperature values of the pixel points 1,2, … 1080 … 2x1080 and … 3x1080 of the right frame of the display area after splicing by using the formula II
Figure BDA00029256747500002128
The above formula (i) is used to calculate the ambient light brightness values of the lower border pixel points 1,2, … 1920, … 2x1920, … 3x1920
Figure BDA0002925674750000221
Calculating the ambient light color temperature values of the lower frame pixel points 1,2, … 1920, … 2x1920 and … 3x1920 by using the formula-
Figure BDA0002925674750000222
The environment of the left frame pixel points 1,2, … 1080 … 2x1080 and … 3x1080 is calculated by using the formula (i)Brightness value of light
Figure BDA0002925674750000223
Calculating the ambient light color temperature values of the left frame pixel points 1,2, … 1080 … 2x1080 and … 3x1080 by using the formula-
Figure BDA0002925674750000224
The pixel point corresponding to the frame of the pixel point (2040, 1900) in the spliced display area is 2040, and the ambient brightness value of the frame pixel point 2040 in the spliced display area is 2040
Figure BDA0002925674750000225
The color temperature value of the ambient light is
Figure BDA0002925674750000226
The pixel point (2040, 1900) corresponding to the right frame of the display area after splicing is 1900, and the ambient light brightness value of the pixel point 1900 of the right frame of the display area after splicing is 1900
Figure BDA0002925674750000227
The color temperature value of the ambient light is
Figure BDA0002925674750000228
The pixel point (2040, 1900) corresponding to the lower frame of the display area after splicing is 1920x 3-2040-3720, and the ambient light brightness value of the pixel point 3720 of the lower frame of the display area after splicing is 3720
Figure BDA0002925674750000229
The color temperature value of the ambient light is
Figure BDA00029256747500002210
The pixel point (2040, 1900) corresponding to the left frame of the display area after splicing is 1080x3-1900 ═ 1340, and the ambient brightness value of the pixel point 1340 of the left frame of the display area after splicing is 1340
Figure BDA00029256747500002211
The color temperature value of the ambient light is
Figure BDA00029256747500002212
According to the formula (v), the ambient brightness value LUX of pixel (2040, 1900) (2040，1900) Is composed of
Figure BDA00029256747500002213
According to the formula, the ambient light color temperature value CCT of the pixel point (2040, 1900) (2040，1900) Is composed of
Figure BDA00029256747500002214
In other embodiments, the large-screen devices in the uppermost row in the tiled display area respectively send the ambient light data collected by the frame ambient light sensor on the large-screen devices in the row to the other large-screen devices in the row. Therefore, any large-screen device in the uppermost line acquires the ambient light data acquired by all ambient light sensors on the frame on the display area after splicing. And each large-screen device in the top row calculates the ambient light brightness value of the pixel point on the frame according to at least one ambient light brightness acquisition value of the frame on the spliced display area, and acquires the ambient light color temperature value of the pixel point on the frame according to at least one ambient light color temperature acquisition value of the frame on the spliced display area. And after splicing, the large-screen equipment in the rightmost column in the display area respectively sends the ambient light data acquired by the ambient light sensor on the right frame of the large-screen equipment to other large-screen equipment in the column. Therefore, any large-screen device in the rightmost column acquires the ambient light data collected by all ambient light sensors on the right frame of the display area after splicing. And each large-screen device in the rightmost column calculates the ambient light brightness value of the pixel point on the frame according to at least one ambient light brightness acquisition value of the right frame of the spliced display area, and acquires the ambient light color temperature value of the pixel point on the frame according to at least one ambient light color temperature acquisition value of the right frame of the spliced display area. And after splicing, the large-screen equipment positioned in the line at the bottom in the display area respectively sends the ambient light data acquired by the ambient light sensor at the lower frame of the large-screen equipment to other large-screen equipment in the line. Therefore, any large-screen device in the bottom row acquires the ambient light data collected by all the ambient light sensors on the lower frame of the display area after splicing. And each large-screen device in the bottom row calculates the ambient light brightness value of the pixel point on the frame according to at least one ambient light brightness acquisition value of the lower frame of the spliced display area, and acquires the ambient light color temperature value of the pixel point on the frame according to at least one ambient light color temperature acquisition value of the lower frame of the spliced display area. And after splicing, the large-screen equipment in the leftmost column in the display area respectively sends the ambient light data acquired by the left frame ambient light sensor to other large-screen equipment in the column. Therefore, any large-screen device in the leftmost column acquires the ambient light data acquired by all ambient light sensors on the left frame of the display area after splicing. And each large-screen device in the leftmost column calculates the ambient light brightness value of the pixel point on the frame according to at least one ambient light brightness acquisition value of the left frame of the spliced display area, and acquires the ambient light color temperature value of the pixel point on the frame according to at least one ambient light color temperature acquisition value of the left frame of the spliced display area. The large-screen device can calculate the ambient light brightness value and the ambient light color temperature value of the pixel points on the frame of the display area after splicing by adopting a mean value method, a linear fitting method, a quadratic linear fitting method or other methods.
For example, in fig. 16, 3 ambient light sensors on the upper frame of the large screen device (1, 1) collect ambient light data
Figure BDA0002925674750000231
Figure BDA0002925674750000232
And
Figure BDA0002925674750000233
the large-screen device (1, 1) sends ambient light data to the large-screen device (1, 2) and the large-screen device (1, 3)
Figure BDA0002925674750000234
And
Figure BDA0002925674750000235
the 3 ambient light sensors on the upper frame of the large screen device (1, 2) collect ambient light data
Figure BDA0002925674750000236
And
Figure BDA0002925674750000237
the large-screen device (1, 2) sends ambient light data to the large-screen device (1, 1) and the large-screen device (1, 3)
Figure BDA0002925674750000238
And
Figure BDA0002925674750000239
the 3 ambient light sensors on the upper frame of the large-screen device (1, 3) collect ambient light data
Figure BDA00029256747500002310
Figure BDA00029256747500002311
And
Figure BDA00029256747500002312
the large-screen device (1, 3) transmits ambient light data to the large-screen device (1, 1) and the large-screen device (1, 2)
Figure BDA00029256747500002313
And
Figure BDA00029256747500002314
therefore, the large-screen equipment (1, 1), the large-screen equipment (1, 2) and the large-screen equipment (1, 3) acquire the ambient light data acquired by the frame ambient light sensor on the spliced display area
Figure BDA00029256747500002315
Figure BDA00029256747500002316
And
Figure BDA00029256747500002317
similarly, the large-screen devices (1, 3), the large-screen devices (2, 2) and the large-screen devices (3, 3) all obtain the ambient light data collected by the ambient light sensor on the right frame of the spliced display area
Figure BDA00029256747500002318
Figure BDA00029256747500002319
And
Figure BDA00029256747500002320
the large-screen equipment (3, 1), the large-screen equipment (3, 2) and the large-screen equipment (3, 3) all acquire the ambient light data collected by the frame ambient light sensor in the display area after splicing
Figure BDA00029256747500002321
Figure BDA00029256747500002322
And
Figure BDA00029256747500002323
the large-screen equipment (1, 1), the large-screen equipment (2, 1) and the large-screen equipment (3, 1) all acquire the ambient light data collected by the ambient light sensor on the left frame of the display area after splicing
Figure BDA00029256747500002324
And
Figure BDA00029256747500002325
Figure BDA00029256747500002326
the large-screen equipment (1, 1) calculates the ambient light brightness value of the frame pixel point on the large-screen equipment (1, 1) according to at least one ambient light brightness acquisition value of the frame on the spliced display area, and calculates the ambient light color temperature value of the frame pixel point on the large-screen equipment (1, 1) according to at least one ambient light color temperature acquisition value of the frame on the spliced display area. The large-screen equipment (1, 2) calculates the ambient light brightness value of the frame pixel point on the large-screen equipment (1, 2) according to at least one ambient light brightness acquisition value of the frame on the spliced display area, and calculates the ambient light color temperature value of the frame pixel point on the large-screen equipment (1, 2) according to at least one ambient light color temperature acquisition value of the frame on the spliced display area. The large-screen equipment (1, 3) calculates the ambient light brightness value of the frame pixel point on the large-screen equipment (1, 3) according to at least one ambient light brightness acquisition value of the frame on the spliced display area, and calculates the ambient light color temperature value of the frame pixel point on the large-screen equipment (1, 3) according to at least one ambient light color temperature acquisition value of the frame on the spliced display area. By analogy, the large-screen equipment (1, 3) calculates the ambient light brightness value and the ambient light color temperature value of the pixel point of the right frame of the large-screen equipment (1, 3); the large-screen device (2, 3) calculates the ambient light brightness value and the ambient light color temperature value of the right frame pixel point of the large-screen device (2, 3); the large-screen device (3, 3) calculates the ambient light brightness value and the ambient light color temperature value of the pixel point of the right frame of the large-screen device (3, 3); the large-screen device (3, 1) calculates the ambient light brightness value and the ambient light color temperature value of the lower frame pixel point of the large-screen device (3, 1); the large-screen device (3, 2) calculates the ambient light brightness value and the ambient light color temperature value of the lower frame pixel point of the large-screen device (3, 2); the large-screen device (3, 3) calculates the ambient light brightness value and the ambient light color temperature value of the lower frame pixel point of the large-screen device (3, 3); the large-screen device (1, 1) calculates the ambient light brightness value and the ambient light color temperature value of the left frame pixel point of the large-screen device (1, 1); the large-screen device (2, 1) calculates the ambient light brightness value and the ambient light color temperature value of the left frame pixel point of the large-screen device (2, 1); the large-screen device (3, 1) calculates the ambient light brightness value and the ambient light color temperature value of the left frame pixel point of the large-screen device (3, 1).
Or, after splicing, each large-screen device on the top line of the display area calculates the ambient light brightness value of the pixel point on the frame according to at least one ambient light brightness collecting value of the frame, and obtains the ambient light color temperature value of the pixel point on the frame according to at least one ambient light color temperature collecting value of the frame. And each large-screen device in the rightmost column of the display area after splicing calculates the ambient light brightness value of the pixel point on the right frame according to at least one ambient light brightness collecting value of the right frame, and obtains the ambient light color temperature value of the pixel point on the right frame according to at least one ambient light color temperature collecting value of the right frame. And after splicing, each large-screen device in the lowest line of the display area calculates the ambient light brightness value of the pixel point on the lower frame according to at least one ambient light brightness acquisition value of the lower frame, and acquires the ambient light color temperature value of the pixel point on the lower frame according to at least one ambient light color temperature acquisition value of the lower frame. And after splicing, each large-screen device in the leftmost column of the display area calculates the ambient light brightness value of the pixel point on the left frame according to at least one ambient light brightness collecting value of the left frame, and obtains the ambient light color temperature value of the pixel point on the left frame according to at least one ambient light color temperature collecting value of the left frame.
For example, in fig. 16, 3 ambient light sensors on the upper frame of the large screen device (1, 1) collect ambient light data
Figure BDA0002925674750000241
Figure BDA0002925674750000242
And
Figure BDA0002925674750000243
the large screen equipment (1, 1) acquires a value according to the ambient light brightness of the upper frame
Figure BDA0002925674750000244
And
Figure BDA0002925674750000245
calculating the ambient light brightness value of the upper frame pixel point of the large-screen device (1, 1), and collecting the value according to the ambient light color temperature of the upper frame
Figure BDA0002925674750000246
And
Figure BDA0002925674750000247
calculating the frame image on a large screen device (1, 1)And collecting the ambient light color temperature of the pixel point. The 3 ambient light sensors on the upper frame of the large screen device (1, 2) collect ambient light data
Figure BDA0002925674750000248
And
Figure BDA0002925674750000249
the large-screen equipment (1, 2) acquires values according to the ambient light brightness of the upper frame
Figure BDA00029256747500002410
And
Figure BDA00029256747500002411
calculating the ambient light brightness value of the upper frame pixel point of the large-screen equipment (1, 2), and collecting the value according to the ambient light color temperature of the upper frame
Figure BDA00029256747500002412
And
Figure BDA00029256747500002413
and calculating the ambient light color temperature value of the frame pixel point on the large-screen equipment (1, 2). The 3 ambient light sensors on the upper frame of the large-screen device (1, 3) collect ambient light data
Figure BDA00029256747500002414
And
Figure BDA00029256747500002415
the large-screen equipment (1, 3) acquires values according to the ambient light brightness of the upper frame
Figure BDA00029256747500002416
And
Figure BDA00029256747500002417
calculating the ambient light brightness value of the upper frame pixel point of the large-screen equipment (1, 3), and collecting the value according to the ambient light color temperature of the upper frame
Figure BDA00029256747500002418
And
Figure BDA00029256747500002419
and calculating the ambient light color temperature value of the frame pixel point on the large-screen equipment (1, 3). By analogy, the large-screen equipment (1, 3) calculates the ambient light brightness value and the ambient light color temperature value of the pixel point of the right frame of the large-screen equipment (1, 3); the large-screen device (2, 3) calculates the ambient light brightness value and the ambient light color temperature value of the right frame pixel point of the large-screen device (2, 3); the large-screen device (3, 3) calculates the ambient light brightness value and the ambient light color temperature value of the pixel point of the right frame of the large-screen device (3, 3); the large-screen device (3, 1) calculates the ambient light brightness value and the ambient light color temperature value of the lower frame pixel point of the large-screen device (3, 1); the large-screen device (3, 2) calculates the ambient light brightness value and the ambient light color temperature value of the lower frame pixel point of the large-screen device (3, 2); the large-screen device (3, 3) calculates the ambient light brightness value and the ambient light color temperature value of the lower frame pixel point of the large-screen device (3, 3); the large-screen device (1, 1) calculates the ambient light brightness value and the ambient light color temperature value of the left frame pixel point of the large-screen device (1, 1); the large-screen device (2, 1) calculates the ambient light brightness value and the ambient light color temperature value of the left frame pixel point of the large-screen device (2, 1); the large-screen device (3, 1) calculates the ambient light brightness value and the ambient light color temperature value of the left frame pixel point of the large-screen device (3, 1).
In some examples, when the ambient light brightness values (or ambient light color temperature values) of the same pixel point on the frame of the spliced display area calculated by two adjacent large-screen devices are not consistent, performing smoothing processing; i.e. taking the average of the two large screen device calculated values. Illustratively, as shown in fig. 17, the ambient light brightness value of the upper bezel pixel point 1920 calculated by the large-screen device (1, 1) is P; the ambient light brightness value of the upper bezel pixel point 1920 calculated by the large-screen device (1, 2) is R; the ambient light brightness value at the upper border pixel point 1920 is determined to be (P + R)/2.
And any large-screen device in the local area network acquires the ambient brightness value and the ambient light color temperature value of the pixel point on the frame of the display area after splicing from the large-screen device at the corresponding frame, and calculates the ambient brightness value and the ambient light color temperature value of the pixel point in the pixel range of the large-screen device. For example, the large-screen device calculates the ambient light brightness value of the pixel point within the pixel range of the large-screen device according to a formula (v), and calculates the ambient light color temperature value of the pixel point within the pixel range of the large-screen device according to a formula (sixty).
Exemplarily, in fig. 16, pixel points corresponding to a border of pixel points (2040, 1900) in a spliced display area are 2040, and the border pixel points 2040 are located on a large-screen device (1, 2); after splicing, the pixel point (2040, 1900) corresponding to the right frame of the display area is 1900, and the right frame pixel point 1900 is positioned on the large-screen equipment (2, 3); after splicing, pixel points (2040 and 1900) corresponding to a lower frame of a display area are 1920x 3-2040-3720, and the lower frame pixel point 3720 is located on large-screen equipment (3 and 2); after splicing, the pixel point (2040, 1900) corresponding to the left frame of the display area is 1080x3-1900 ═ 1340, and the left frame pixel point 1340 is located on the large-screen device (2, 1). The large-screen device (2, 2) of the pixel point (2040, 1900) acquires the ambient brightness value of the upper frame pixel point 2040 from the large-screen device (1, 2)
Figure BDA00029256747500002420
The color temperature value of the ambient light is
Figure BDA00029256747500002421
Obtaining ambient light brightness values for right bezel pixel points 1900 from a large screen device (2, 3)
Figure BDA00029256747500002422
The color temperature value of the ambient light is
Figure BDA00029256747500002423
The ambient brightness value of the lower frame pixel point 3720 obtained from the large screen device (3, 2) is
Figure BDA00029256747500002424
The color temperature value of the ambient light is
Figure BDA00029256747500002425
The ambient light brightness value of the left frame pixel point 1340 obtained from the large screen device (2, 1) is
Figure BDA00029256747500002426
The color temperature value of the ambient light is
Figure BDA00029256747500002427
And the large-screen equipment (2, 2) calculates the ambient light brightness value of the pixel point (2040, 1900) according to a formula (v), and calculates the ambient light color temperature value of the pixel point (2040, 1900) according to a formula (v).
Taking two large-screen devices as an example, the large-screen device communicates with another large-screen device; for example, the two large-screen devices communicate by wire, or the two large-screen devices communicate by wireless.
The large-screen equipment comprises a first display screen, a second display screen and a third display screen, wherein the first display screen comprises a first display area, and a first frame, a second frame, a third frame and a fourth frame which are arranged around the first display area; the first display area is in contact with the first frame, the second frame, the third frame and the fourth frame, and the edges of the first display area are a first edge, a second edge, a third edge and a fourth edge respectively; the first edge, the second edge, the first border and the second border are all parallel to the first direction, and the third edge, the fourth edge, the third border and the fourth border are all parallel to the second direction. M ambient light sensors are distributed on the upper frame and the lower frame respectively, N ambient light sensors are distributed on the left frame and the right frame respectively, and M and N are positive integers larger than 1.
The other large-screen device comprises a second display screen, wherein the second display screen comprises a second display area, and a fifth frame, a sixth frame, a seventh frame and an eighth frame which are arranged around the second display area; the second display area is in contact with the fifth frame, the sixth frame, the seventh frame and the eighth frame, and the edges of the second display area are respectively a fifth edge, a sixth edge, a seventh edge and an eighth edge; the fifth edge, the sixth edge, the fifth border, and the sixth border are all parallel to the first direction, and the seventh edge, the eighth edge, the seventh border, and the eighth border are all parallel to the second direction. K ambient light sensors are distributed on the upper frame and the lower frame respectively, L ambient light sensors are distributed on the left frame and the right frame respectively, and K and L are positive integers larger than 1.
In an example, taking the large-screen device (2, 2) in fig. 16 as an example, the upper frame of the display screen of the large-screen device (2, 2) is a first frame, the lower frame is a second frame, the left frame is a third frame, and the right frame is a fourth frame. The edge of the display area of the display screen of the large-screen device (2, 2) in contact with the upper frame is a first edge, the edge in contact with the lower frame is a second edge, the edge in contact with the left frame is a third edge, and the edge in contact with the right frame is a fourth edge. Taking the large-screen device (2, 1) in fig. 16 as another large-screen device as an example, the upper frame of the display screen of the large-screen device (2, 1) is a fifth frame, the lower frame is a sixth frame, the left frame is a seventh frame, and the right frame is an eighth frame. The edge of the display area of the display screen of the large-screen device (2, 1) in contact with the upper frame is a fifth edge, the edge in contact with the lower frame is a sixth edge, the edge in contact with the left frame is a seventh edge, and the edge in contact with the right frame is an eighth edge.
The right frame (namely the eighth frame) of the large-screen equipment (2, 1) is contacted with the left frame (namely the third frame) of the large-screen equipment (2, 2); namely, the large-screen device (2, 1) and the large-screen device (2, 2) are spliced into a display area.
In this way, the pixel point (2040, 1900) of the display area of the large-screen device (2, 2) projected on the left edge of the display area after splicing is the pixel point projected on the left edge (i.e. the seventh edge) of the large-screen device (2, 1).
In another example, taking the large-screen device (2, 2) in fig. 16 as an example, a left frame of the display screen of the large-screen device (2, 2) is a first frame, a right frame is a second frame, an upper frame is a third frame, and a lower frame is a fourth frame. The edge of the display area of the display screen of the large-screen device (2, 2) in contact with the left frame is a first edge, the edge in contact with the right frame is a second edge, the edge in contact with the upper frame is a third edge, and the edge in contact with the lower frame is a fourth edge. Taking the large-screen device (1, 2) in fig. 16 as another large-screen device as an example, the left frame of the display screen of the large-screen device (1, 2) is a fifth frame, the right frame is a sixth frame, the upper frame is a seventh frame, and the lower frame is an eighth frame. The edge of the display area of the display screen of the large-screen equipment (1, 2) in contact with the left frame is a fifth edge, the edge in contact with the right frame is a sixth edge, the edge in contact with the upper frame is a seventh edge, and the edge in contact with the lower frame is an eighth edge.
The lower frame (namely the eighth frame) of the large-screen equipment (1, 2) is contacted with the upper frame (namely the third frame) of the large-screen equipment (2, 2); that is to say, the large-screen devices (1, 2) and the large-screen devices (2, 2) are spliced into one display area.
In this way, the pixel points (2040, 1900) in the display area of the large-screen device (2, 2) projected on the upper edge of the spliced display area are the pixel points projected on the upper edge (i.e. the seventh edge) of the large-screen device (1, 2).
And so on, the upper frame of the large-screen device (3, 2) is contacted with the lower frame of the large-screen device (2, 2), and the pixel points (2040, 1900) of the display area of the large-screen device (2, 2) are projected on the pixel points at the lower edge of the display area after splicing, namely the pixel points at the lower edge of the large-screen device (3, 2). The left frame of the large-screen equipment (2, 3) is in contact with the right frame of the large-screen equipment (2, 2), and pixel points (2040, 1900) in the display area of the large-screen equipment (2, 2) are projected on the pixel points at the right edge of the display area after splicing, namely the pixel points at the right edge of the large-screen equipment (2, 3).
The mode of splicing the two large-screen devices together can be that the right frame of the large-screen device is contacted with the left frame of the other large-screen device; or the left frame of the large-screen equipment is contacted with the right frame of the other large-screen equipment; or the lower frame of the large-screen equipment is contacted with the upper frame of the other large-screen equipment; or the upper frame of the large-screen equipment is contacted with the lower frame of the other large-screen equipment.
The method comprises the steps that pixel points (2040, 1900) of a display area of the large-screen device (2, 2) are projected on a frame of the large-screen device (2, 2) or another large-screen device, namely a selected frame, and illustratively, the serial numbers of the selected four frames are 0, 1,2 and 3 according to the sequence of up, right, down and left.
S1106, the large-screen device obtains the backlight parameter of the corresponding pixel point according to the ambient light brightness value of each pixel point of the large-screen device, and obtains the image quality parameter of the corresponding pixel point according to the ambient light color temperature value of each pixel point of the large-screen device.
Each large-screen device in the local area network respectively acquires the backlight parameter of the corresponding pixel point according to the ambient light brightness value of each pixel point in the pixel range, and acquires the image quality parameter of the corresponding pixel point according to the ambient light color temperature value of each pixel point in the pixel range.
The method for acquiring the backlight parameter and the image quality parameter of the pixel point in the display area of the large-screen device may refer to S504, which is not described herein again.
And S1107, the large-screen device adjusts the backlight of the large-screen device and the image quality of a display picture according to the backlight parameter and the image quality parameter of each pixel point of the large-screen device.
And each large-screen device in the local area network respectively adjusts the backlight and the image quality of the display picture of the corresponding large-screen device according to the backlight parameter and the image quality parameter of each pixel point in the pixel range.
According to the method for adjusting the display parameters, the large-screen devices are spliced into the rectangular display area. Each large-screen device in the large-screen devices calculates the ambient light brightness value and the ambient light color temperature value of each pixel point in the respective pixel range according to the ambient light brightness value and the ambient light color temperature value of the pixel points of the frame of the display area after splicing; and adjusting the backlight and the image quality of the corresponding pixel points according to the ambient light brightness value and the ambient light color temperature value of each pixel point. And the spliced pictures in the display area realize pixel level adjustment. The large-screen equipment is processed in a distributed mode and operated independently, computing resources of each large-screen equipment are fully used, and computing efficiency is improved.
For example, fig. 18 shows a distributed control system for adjusting display parameters of a display area after splicing of a plurality of large-screen devices. The distributed control system comprises at least two large-screen devices and a data transmission channel. The data transmission channel is used for carrying out wired or wireless communication among a plurality of large-screen devices in the distributed control system. For example, the data transmission channel is a system bus; the method can be used for sending the physical position and the connection state of the large-screen device to other large-screen devices; the frame large-screen device can be used for sending the ambient light brightness value and the ambient light color temperature value of the frame pixel point to other large-screen devices; the method can be used for sending data collected by the ambient light sensor of the large-screen device to other large-screen devices. The large screen device includes an ambient light brightness value and color temperature value calculation unit, a backlight parameter and picture quality parameter calculation unit, a backlight and picture quality control unit, a communication control unit, and the like. The environment light brightness value and color temperature value calculation unit is used for calculating the environment light brightness value and the environment light color temperature value of each pixel point in the pixel range of the display area frame according to the environment light brightness value and the environment light color temperature value of the spliced pixel points of the display area frame; the backlight parameter and image quality parameter calculating unit is used for calculating the backlight parameter and the image quality parameter of the pixel point according to the ambient light brightness value and the ambient light color temperature value of the pixel point; the backlight and image quality control unit is used for adjusting the backlight of the display area and the image quality of the display picture according to the backlight parameter and the image quality parameter of each pixel point of the display area; the communication control unit is used for controlling the large-screen equipment to serve as a client to receive messages or serve as a server to send messages; for example, the client and the server communicate via a TCP/UDP over a lan.
All or part of the embodiments of the present application may be freely combined. The combined technical solution is also within the scope of the present application.
It is understood that the large screen device comprises hardware structures and/or software modules for performing the functions. Those of skill in the art would appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed in hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the embodiments of the present application.
In the embodiment of the present application, the large-screen device may be divided into the functional modules according to the method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.
In an example, please refer to fig. 19, which shows a schematic structural diagram of a large screen device involved in the above embodiment. The large screen apparatus 1900 includes: a processing unit 1910, a storage unit 1920, and a communication unit 1930.
The processing unit 1910 is configured to control and manage the operation of the large-screen device 1900. For example, may be used to perform the various steps of FIG. 5 or FIG. 11; and/or other processes for the techniques described herein.
The storage unit 1920 is used to store program codes and data of the large-screen device 1900. For example, the method can be used for storing the calculated ambient light brightness value and ambient light color temperature value of the frame pixel point of the large-screen device; the method can be used for storing the calculated ambient light brightness value and ambient light color temperature value of the pixel points in the display area of the large-screen device.
The communication unit 1930 is used to support communication between the large-screen device 1900 and other electronic devices. For example, the method may be used to transmit the ambient light brightness collection value and the ambient light color temperature collection value between the large-screen devices 1900, notify the connection state of the large-screen devices, and obtain the ambient light brightness value and the ambient light color temperature value of the frame pixel points.
Of course, the unit modules in the large screen device 1900 include, but are not limited to, the processing unit 1910, the storage unit 1920 and the communication unit 1930. For example, a power supply unit and the like may be further included in the large screen device 1900. The power supply unit is used to supply power to the large screen device 1900.
The processing unit 1910 may be a processor or a controller, such as a Central Processing Unit (CPU), a Digital Signal Processor (DSP), an application-specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. The storage unit 1920 may be a memory. The communication unit 1930 may be a transceiver, a transceiver circuit, or the like.
For example, the processing unit 1910 is a processor (such as the processor 110 shown in fig. 2), the storage unit 1920 can be a memory (such as the internal memory 121 shown in fig. 2), and the communication unit 1930 can be referred to as a communication interface and includes a wireless communication module (such as the wireless communication module 150 shown in fig. 2). The large-screen apparatus 1900 provided in the embodiment of the present application may be the large-screen apparatus 100 shown in fig. 2. Wherein the above-mentioned processors, memories, communication interfaces, etc. may be connected together, e.g. by a bus.
An embodiment of the present application further provides a computer-readable storage medium, in which a computer program code is stored, and when a processor executes the computer program code, the large-screen device executes the method in the foregoing embodiment.
The embodiments of the present application also provide a computer program product, which when running on a computer, causes the computer to execute the method in the above embodiments.
The large-screen device 1900, the computer-readable storage medium, or the computer program product provided in this embodiment of the present application are all configured to execute the corresponding method provided above, and therefore, beneficial effects achieved by the large-screen device may refer to beneficial effects in the corresponding method provided above, which are not described herein again.
Through the description of the above embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above functions may be distributed by different functional modules according to needs, that is, the internal structure of the electronic device may be divided into different functional modules to complete all or part of the above described functions.
In the several embodiments provided in the present application, it should be understood that the disclosed electronic device and method may be implemented in other ways. For example, the above-described embodiments of the electronic device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another electronic device, or some features may be omitted or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of electronic devices or units through some interfaces, and may be in an electrical, mechanical or other form.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or partially contributed to by the prior art, or all or part of the technical solutions may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a magnetic disk, or an optical disk.
The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (20)

1. A method for adjusting display parameters is applied to large-screen equipment, wherein the large-screen equipment comprises a first display screen, the first display screen comprises a first display area, and a first frame, a second frame, a third frame and a fourth frame which are arranged around the first display area; the first display area is in contact with the first frame, the second frame, the third frame and the fourth frame, and the edges of the first display area, which are positioned on the first display area, are a first edge, a second edge, a third edge and a fourth edge respectively; the first edge, the second edge, the first border, and the second border are all parallel to a first direction, and the third edge, the fourth edge, the third border, and the fourth border are all parallel to a second direction; the first frame and the second frame are respectively distributed with M ambient light sensors, the third frame and the fourth frame are respectively distributed with N ambient light sensors, and M and N are positive integers greater than 1; characterized in that the method comprises:
acquiring first ambient light data of a first pixel point, second ambient light data of a second pixel point, third ambient light data of a third pixel point and fourth ambient light data of a fourth pixel point;
acquiring A ambient light data of a pixel point A of the first display area according to the first ambient light data, the second ambient light data, the third ambient light data and the fourth ambient light data;
adjusting the backlight brightness and the image quality of the pixel point A according to the ambient light data A; the image quality comprises at least one of hue, hue and saturation;
the first pixel point, the second pixel point, the third pixel point and the fourth pixel point are respectively one pixel point projected from the pixel point A to the first edge, the second edge, the third edge and the fourth edge.
2. The method according to claim 1, wherein the obtaining first ambient light data for a first pixel point; the method comprises the following steps:
acquiring a data acquisition value of at least one ambient light sensor of the M ambient light sensors of the first frame;
and acquiring first ambient light data of the first pixel point according to the data acquisition value.
3. The method according to claim 2, wherein the first ambient light data of the first pixel point is obtained according to the data acquisition value; the method comprises the following steps:
and acquiring an average value of data acquisition values of the at least one ambient light sensor, wherein the average value is first ambient light data of the first pixel point.
4. The method according to claim 2, wherein the first ambient light data of the first pixel point is obtained according to the data acquisition value; the method comprises the following steps:
and performing linear fitting on the data acquisition value of the at least one ambient light sensor to acquire first ambient light data of the first pixel point.
5. The method of claim 2, further comprising:
if the number of the data acquisition values of the at least one ambient light sensor is larger than or equal to a first threshold value, and the calculation capacity of a processor of the large-screen equipment is smaller than a second threshold value; or the data acquisition value of the at least one ambient light sensor is smaller than a first threshold value;
taking the mean value of the data acquisition values of the at least one ambient light sensor as the first ambient light data;
and if the number of the data acquisition values of the at least one ambient light sensor is greater than or equal to a first threshold value and the calculation capacity of the processor of the large-screen device is greater than or equal to a second threshold value, performing linear fitting on the data acquisition values of the at least one ambient light sensor to acquire first ambient light data of the first pixel point.
6. The method according to claim 2, wherein the obtaining of the third ambient light data for the third pixel point; the method comprises the following steps:
acquiring a data acquisition value of at least one ambient light sensor of the N ambient light sensors of the third frame;
and acquiring third ambient light data of the third pixel point according to the data acquisition value.
7. The method according to claim 4, wherein the data acquisition value of the at least one ambient light sensor is linearly fitted to obtain first ambient light data of the first pixel point; the method comprises the following steps:
determining the first ambient light data kj + c;
wherein j is the pixel value of the first pixel point;
Figure FDA0002925674740000021
LUX is a matrix representation of the data acquisition values of the at least one ambient light sensor, and n is the number of data acquisition values of the at least one ambient light sensor.
8. A method for adjusting display parameters is applied to a large-screen device, and the large-screen device is communicated with another large-screen device; the large-screen device comprises a first display screen, wherein the first display screen comprises a first display area, and a first frame, a second frame, a third frame and a fourth frame which are arranged around the first display area; the first display area is in contact with the first frame, the second frame, the third frame and the fourth frame, and the edges of the first display area, which are positioned on the first display area, are a first edge, a second edge, a third edge and a fourth edge respectively; the first edge, the second edge, the first border, and the second border are all parallel to a first direction, and the third edge, the fourth edge, the third border, and the fourth border are all parallel to a second direction; the first frame and the second frame are respectively distributed with M ambient light sensors, the third frame and the fourth frame are respectively distributed with N ambient light sensors, and M and N are positive integers greater than 1;
the other large-screen device comprises a second display screen, wherein the second display screen comprises a second display area, and a fifth frame, a sixth frame, a seventh frame and an eighth frame which are arranged around the second display area; the second display area is in contact with the fifth frame, the sixth frame, the seventh frame and the eighth frame, and the edges of the second display area, which are positioned on the second display area, are a fifth edge, a sixth edge, a seventh edge and an eighth edge, respectively; the fifth edge, the sixth edge, the fifth border, and the sixth border are all parallel to the first direction, and the seventh edge, the eighth edge, the seventh border, and the eighth border are all parallel to the second direction; k ambient light sensors are respectively distributed on the fifth frame and the sixth frame, L ambient light sensors are respectively distributed on the seventh frame and the eighth frame, and K and L are positive integers larger than 1; the eighth frame is in contact with the third frame;
characterized in that the method comprises:
acquiring first ambient light data of a first pixel point, second ambient light data of a second pixel point and fourth ambient light data of a fourth pixel point;
receiving a first message; the first message comprises third ambient light data of a third pixel provided by the other large-screen device;
acquiring ambient light data A of a pixel point A of the first display area according to the first ambient light data, the second ambient light data, the third ambient light data and the fourth ambient light data;
adjusting the backlight brightness and the image quality of the pixel point A according to the ambient light data A; the image quality comprises at least one of hue, hue and saturation;
the first pixel point, the second pixel point, the third pixel point and the fourth pixel point are respectively one pixel point projected from the pixel point A to the first edge, the second edge, the seventh edge and the fourth edge.
9. The method according to any one of claims 1 to 8, wherein the ambient light data a of the pixel point a in the first display region is obtained according to the first ambient light data, the second ambient light data, the third ambient light data, and the fourth ambient light data; the method comprises the following steps:
the large screen device acquires the ambient light data a according to the following formula,
Figure FDA0002925674740000031
Figure FDA0002925674740000032
wherein, LUX (x，y) Is the ambient brightness value, CCT, of pixel A (x, y) (x，y) The ambient light color temperature value of the pixel point A (x, y);
g is the serial number of the selected frame, L g The pixel distance of the pixel point A (x, y) from each selected frame, E g The maximum value of the minimum pixel distance from each pixel point of the first display area to the selected frame is obtained;
LUX g the brightness value, CCT, of the environment light of the pixel point projected from the pixel point A (x, y) to the corresponding selected frame g The ambient light color temperature value of the pixel point projected from the pixel point a (x, y) to the corresponding selected frame is shown.
10. The method according to any one of claims 1-9, further comprising:
the first direction is perpendicular to the second direction.
11. A large screen device, characterized in that the large screen device comprises:
a processor;
a memory;
and a computer program, wherein the computer program is stored on the memory, which when executed by the processor causes the large screen device to perform the steps of:
acquiring first ambient light data of a first pixel point, second ambient light data of a second pixel point, third ambient light data of a third pixel point and fourth ambient light data of a fourth pixel point;
acquiring A ambient light data of a pixel point A of the first display area according to the first ambient light data, the second ambient light data, the third ambient light data and the fourth ambient light data;
adjusting the backlight brightness and the image quality of the pixel point A according to the ambient light data A; the image quality comprises at least one of hue, hue and saturation;
the first pixel point, the second pixel point, the third pixel point and the fourth pixel point are respectively one pixel point projected from the pixel point A to the first edge, the second edge, the third edge and the fourth edge.
12. The large-screen device according to claim 11, wherein the obtaining of the first ambient light data of the first pixel point; the method comprises the following steps:
acquiring a data acquisition value of at least one ambient light sensor of the M ambient light sensors of the first frame;
and acquiring first ambient light data of the first pixel point according to the data acquisition value.
13. The large-screen device according to claim 12, wherein the first ambient light data of the first pixel point is obtained according to the data acquisition value; the method comprises the following steps:
and acquiring an average value of data acquisition values of the at least one ambient light sensor, wherein the average value is first ambient light data of the first pixel point.
14. The large-screen device according to claim 12, wherein the first ambient light data of the first pixel point is obtained according to the data acquisition value; the method comprises the following steps:
and performing linear fitting on the data acquisition value of the at least one ambient light sensor to acquire first ambient light data of the first pixel point.
15. The large-screen device according to claim 12, further performing:
if the number of the data acquisition values of the at least one ambient light sensor is larger than or equal to a first threshold value, and the calculation capacity of a processor of the large-screen equipment is smaller than a second threshold value; or the data acquisition value of the at least one ambient light sensor is smaller than a first threshold value;
taking the mean value of the data acquisition values of the at least one ambient light sensor as the first ambient light data;
and if the number of the data acquisition values of the at least one ambient light sensor is greater than or equal to a first threshold value and the calculation capacity of the processor of the large-screen device is greater than or equal to a second threshold value, performing linear fitting on the data acquisition values of the at least one ambient light sensor to acquire first ambient light data of the first pixel point.
16. The large-screen device according to claim 12, wherein the third ambient light data of a third pixel point is obtained; the method comprises the following steps:
acquiring a data acquisition value of at least one ambient light sensor of the N ambient light sensors of the third frame;
and acquiring third ambient light data of the third pixel point according to the data acquisition value.
17. The large-screen device according to claim 14, wherein the data acquisition value of the at least one ambient light sensor is linearly fitted to acquire first ambient light data of the first pixel point; the method comprises the following steps:
determining the first ambient light data kj + c;
wherein j is the pixel value of the first pixel point;
Figure FDA0002925674740000041
LUX is a matrix representation of the data acquisition values of the at least one ambient light sensor, and n is the number of data acquisition values of the at least one ambient light sensor.
18. The large-screen device according to any one of claims 11 to 17, wherein the ambient light data a of the pixel point a in the first display region is obtained according to the first ambient light data, the second ambient light data, the third ambient light data, and the fourth ambient light data; the method comprises the following steps:
the large screen device acquires the ambient light data a according to the following formula,
Figure FDA0002925674740000042
Figure FDA0002925674740000043
wherein, LUX (x，y) Is the ambient brightness value, CCT, of pixel A (x, y) (x，y) The ambient light color temperature value of the pixel point A (x, y);
g is the serial number of the selected frame, L g Is the distance of pixel point A (x, y)Pixel distance from each selected border, E g The maximum value of the minimum pixel distance from each pixel point of the first display area to the selected frame is obtained;
LUX g the brightness value, CCT, of the environment light of the pixel point projected from the pixel point A (x, y) to the corresponding selected frame g The ambient light color temperature value of the pixel point projected from the pixel point a (x, y) to the corresponding selected frame is shown.
19. A computer-readable storage medium, comprising a computer program which, when run on an electronic device, causes the electronic device to perform the method of any one of claims 1-10.
20. A computer program product, characterized in that, when run on a large-screen device, causes the large-screen device to perform the method according to any one of claims 1-10.
CN202110131938.7A 2021-01-30 2021-01-30 Display parameter adjusting method and large-screen device Pending CN114842780A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202110131938.7A CN114842780A (en) 2021-01-30 2021-01-30 Display parameter adjusting method and large-screen device
PCT/CN2021/140921 WO2022161053A1 (en) 2021-01-30 2021-12-23 Method for adjusting display parameters and large-screen device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110131938.7A CN114842780A (en) 2021-01-30 2021-01-30 Display parameter adjusting method and large-screen device

Publications (1)

Publication Number Publication Date
CN114842780A true CN114842780A (en) 2022-08-02

Family

ID=82560673

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110131938.7A Pending CN114842780A (en) 2021-01-30 2021-01-30 Display parameter adjusting method and large-screen device

Country Status (2)

Country Link
CN (1) CN114842780A (en)
WO (1) WO2022161053A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117153120A (en) * 2023-09-28 2023-12-01 深圳市晟君安科技有限公司 Backlight module driving method and system of liquid crystal display

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101847380B (en) * 2009-03-27 2012-07-04 比亚迪股份有限公司 Liquid crystal display device for automatically adjusting luminance and display method thereof
CN202523382U (en) * 2012-04-26 2012-11-07 深圳市飞鑫光电有限公司 Screen brightness automatic adjusting device
US9129548B2 (en) * 2012-11-15 2015-09-08 Apple Inc. Ambient light sensors with infrared compensation
CN105469749B (en) * 2016-01-15 2017-11-10 京东方科技集团股份有限公司 A kind of liquid crystal display and display device
CN110111733A (en) * 2019-05-20 2019-08-09 深圳市万普拉斯科技有限公司 Screen and mobile terminal comprehensively

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117153120A (en) * 2023-09-28 2023-12-01 深圳市晟君安科技有限公司 Backlight module driving method and system of liquid crystal display

Also Published As

Publication number Publication date
WO2022161053A1 (en) 2022-08-04

Similar Documents

Publication Publication Date Title
CN111724293A (en) Image rendering method and device and electronic equipment
WO2022017261A1 (en) Image synthesis method and electronic device
KR20190017303A (en) Mobile terminal
WO2021052342A1 (en) Frame color adjustment method for electronic apparatus, and device
CN113797530B (en) Image prediction method, electronic device and storage medium
CN111741284A (en) Image processing apparatus and method
WO2023284715A1 (en) Object reconstruction method and related device
CN114365482A (en) Large aperture blurring method based on Dual Camera + TOF
WO2023015997A1 (en) Video editing method and video editing apparatus
CN113810603A (en) Point light source image detection method and electronic equipment
CN114579016A (en) Method for sharing input equipment, electronic equipment and system
CN110248037A (en) A kind of identity document scan method and device
WO2022166624A1 (en) Screen display method and related apparatus
CN114461057A (en) VR display control method, electronic device and computer readable storage medium
CN114880251A (en) Access method and access device of storage unit and terminal equipment
CN113489895B (en) Method for determining recommended scene and electronic equipment
CN114842780A (en) Display parameter adjusting method and large-screen device
CN115390951A (en) Dynamic wallpaper display method, electronic device and storage medium
CN115032640B (en) Gesture recognition method and terminal equipment
WO2022095906A1 (en) Key mapping method, electronic device, and system
WO2022135272A1 (en) Three-dimensional model reconstruction method, device, and storage medium
CN115641867A (en) Voice processing method and terminal equipment
CN116263971A (en) Image frame prediction method, electronic device, and computer-readable storage medium
CN115150542A (en) Video anti-shake method and related equipment
CN114630152A (en) Parameter transmission method and device for image processor and storage medium

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination