CN112331153B

CN112331153B - Television with backlight rendering scene display function and method

Info

Publication number: CN112331153B
Application number: CN202011293461.4A
Authority: CN
Inventors: 黄玉宾; 洪鸿榕
Original assignee: TPV Display Technology Xiamen Co Ltd
Current assignee: TPV Display Technology Xiamen Co Ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2022-03-11
Anticipated expiration: 2040-11-18
Also published as: CN112331153A

Abstract

The invention discloses a television with backlight rendering scene display and a method thereof, wherein after a rendering mode is entered, pictures watched by a user and backlight control are not generated by an SOC main processor but are realized by an additionally arranged coprocessor or an FPGA board. In this rendering mode, the SoC main processor and some of the unrelated components enter a low power consumption or off mode. The static or dynamic rendering picture can be realized by the coprocessor, different rendering modes can be preset in the coprocessor or a memory in advance, and the rendering modes can be defined by a user in advance and comprise colors, backgrounds, brightness, running tracks and the like of a display area. The invention is applicable to any display equipment adopting backlight area dimming technology, including traditional LED backlight area control equipment, and recently-heated Mini-LED backlight televisions, displays and the like.

Description

Television with backlight rendering scene display function and method

Technical Field

The invention relates to the technical field of display, in particular to a television with backlight rendering scene display and a method.

Background

The Local Dimming television divides a picture, can independently control the backlight brightness of each area, can greatly improve the contrast of the picture and reduce the backlight power consumption. And the television adopting the Mini-LED backlight enables the area division to be more detailed, and further improves the television picture effect. Because the backlight area of the television adopting the Mini-LED backlight is large, a coprocessor or an FPGA (field programmable gate array) board is generally needed to be matched to drive the backlight. Therefore, in a specific mode, the co-processor or FPGA board can directly control the backlight and LCD picture without the participation of the main processor. In this particular mode, the SOC system and other unrelated modules may enter a sleep or off state, thereby greatly reducing power consumption.

Disclosure of Invention

The invention aims to provide a television with a backlight rendering scene display function and a method thereof, which can realize scene rendering of a specific picture by combining backlight and a liquid crystal picture according to the characteristic that a backlight area of a display device can be independently controlled.

The technical scheme adopted by the invention is as follows:

a television with backlight rendering scene display comprises an SOC main processor, and a remote control receiver and a coprocessor which are connected with the SOC main processor, wherein the coprocessor is connected with a display screen, the display screen adopts backlight area control, and the remote control receiver receives a remote control command and informs the SOC main processor to switch a specific rendering mode and a normal working mode; the SOC main processor receives a user command to output a video picture, calculates backlight data according to areas and provides a coprocessor for processing; the coprocessor receives a main processor control command, and in a normal working mode, the coprocessor receives SOC main processor pictures and backlight data and outputs the SOC main processor pictures and the backlight data to a display screen for displaying; in the rendering mode, the SOC main processor enters a sleep or off state, and the coprocessor generates pictures and backlight data by itself and transmits the pictures and the backlight data to the display screen.

Further, as a preferred implementation, the television is further provided with a key, the key is connected with the SOC main processor, and the SOC main processor switches the specific rendering mode and the normal operating mode based on key input information.

Further, as a preferred embodiment, the coprocessor is connected with a memory, and the memory stores parameter data necessary for the rendering mode to work, wherein the parameter data includes backlight data and liquid crystal data.

Further, as a preferred embodiment, the coprocessor is connected to the display screen through a backlight control interface and a picture transmission interface respectively.

Further, as a preferred embodiment, the display screen is an R G B three primary color liquid crystal screen.

Further, as a preferred embodiment, the backlight of the display screen adopts white light or RGB three-color backlight.

Further, as a preferred embodiment, the backlight adopted by the display screen is a traditional LED backlight or a mini-LED backlight.

Further, as a preferred embodiment, the control of the backlight by the co-processor includes the switching of the LEDs of each zone, the brightness and color control of the LEDs.

Further, as a preferred embodiment, the control of the backlight by the coprocessor is carried out in the unit of area, the control of the liquid crystal of the display screen by the coprocessor is carried out in the unit of pixel, the R, G and B components of each pixel are controlled individually, and different picture colors are presented through the change of the liquid crystal color.

A method of displaying a scene with backlight rendering, comprising the steps of:

step 1, a display device is started and is in a normal working mode, and a user sets and stores rendering mode parameters;

step 2, whether an instruction for entering a rendering mode is received; when the SOC main processor obtains a rendering mode entering instruction input by a user, informing the coprocessor to enter a rendering mode and simultaneously enabling the SOC main processor to enter a sleep or close state, and executing the step 3; otherwise, executing step 2;

step 3, the coprocessor acquires necessary parameter data when the rendering mode works,

step 4, the coprocessor generates pictures and backlight data based on necessary parameter data and transmits the pictures and the backlight data to the display screen; the method comprises the following specific steps:

step 4-1, the coprocessor acquires the coordinate position and the display range of the character to be displayed, calculates the backlight area where the character is located,

step 4-2, the coprocessor calculates backlight intensity according to the brightness of the character to be displayed, sends backlight data to a corresponding area of the display screen, and sets the backlight brightness of an area outside the character to be 0;

4-3, in the liquid crystal control part, recording the coordinates, the shape and the color of the character to be displayed on the display screen by the coprocessor in a two-dimensional array, and realizing the character display on the picture by the coprocessor by controlling the RGB value of each pixel of the liquid crystal screen;

step 5, whether an instruction for exiting the rendering mode is received; if so, waking up the SOC main processor to inform the coprocessor to exit the rendering mode,

and 6, the coprocessor exits the rendering mode and performs display processing in a normal working mode under the control of the SOC main processor.

Further, in step 1, the necessary parameter data of the rendering mode is set through a remote controller or a key.

Further, the instruction to enter the rendering mode in step 2 is input by the user through a remote controller or a key.

Further, the instruction of entering the rendering mode in step 2 is automatically triggered by the user setting the display device to enter the rendering mode when the set condition is met.

Specifically, in step 2, the rendering mode entering instruction is automatically triggered when the display device is not operated or when the external input interface has no signal and reaches the set time.

For example, a portion displaying a red character, where R may be set to a corresponding value according to brightness and G and B are set to 0. Virtually any color can be produced by the combination of liquid crystals rgb. By the method, fine and colorful rendering pictures can be realized.

Further, as a preferred embodiment, the character screen in step 4 supports a dynamic effect, and the displayed characters as a whole set a running track or each character set a different running track, respectively, to implement the dynamic effect.

Further, as a preferred embodiment, the coprocessor calculates in real time to obtain a new position of the character according to the running track, and updates the backlight and the liquid crystal data.

Further, as a preferred embodiment, the coprocessor dynamically changes the color of each character by changing the rgb value of each character in real time in step 4.

Further, as a preferred embodiment, the coprocessor changes the size and shape of the character in real time in step 4 to present different dynamic rendering effects.

Further, as a preferred embodiment, in step 4-3, the coprocessor turns on the backlight LED of a certain area and controls the liquid crystal of the area to be turned on to present the halo effect of the LED lamp; or the co-processor is controlled by the backlight and the liquid crystal rgb color to present different color LED halos.

Further, as a preferred embodiment, the co-processor controls the size of the halo by controlling the brightness of the backlight LED.

Further, as a preferred embodiment, the coprocessor controls the color presented by each region by changing the rgb value of that region, thereby forming a multicolored picture.

By adopting the technical scheme, after the rendering mode is entered, the picture and backlight control watched by the user is not generated by the SOC main processor but realized by the additionally arranged coprocessor or FPGA board. In this rendering mode, the SoC main processor and some of the unrelated components enter a low power consumption or off mode. The static or dynamic rendering picture can be realized by the coprocessor, different rendering modes can be preset in the coprocessor or a memory in advance, and the rendering modes can be defined by a user in advance and comprise colors, backgrounds, brightness, running tracks and the like of a display area. The invention is applicable to any display equipment adopting backlight area dimming technology, including traditional LED backlight area control equipment, and recently-heated Mini-LED backlight televisions, displays and the like.

Drawings

The invention is described in further detail below with reference to the accompanying drawings and the detailed description;

fig. 1 is a schematic structural diagram of a television with a backlight rendering scene display according to the present invention;

FIG. 2 is a schematic flow chart of a method for displaying a scene with backlight rendering according to the present invention;

FIG. 3 is a diagram of the display effect of characters according to the present invention;

FIG. 4 is a second diagram of the character display effect of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Display devices with regional backlight control are quite common, and by dividing display regions and individually controlling the backlight brightness of each region, the display contrast can be greatly improved, and the power consumption of the device can be reduced. The display device adopting the Mini-LED backlight technology has the advantages that the controllable area is greatly increased, the display effect is further improved, and the display effect can be comparable to that of an OLED. The regional backlight control system generally divides a display region into N x M rectangular regions with N rows and M columns, processes a picture to be displayed by a main processor SOC, counts picture information such as brightness, color and the like of each region, correspondingly controls the backlight region, compensates the corresponding region of the display picture, and finally transmits the picture to a display screen for display. The picture viewed by the user is actually generated by the combined action of the backlight and the liquid crystal of the display screen, and the backlight and the liquid crystal are controlled by the main processor in the traditional mode.

As shown in one of fig. 1 to 4, the present invention discloses a television with backlight rendering scene display, which includes an SOC main processor, and a remote control receiver and a coprocessor connected to the SOC main processor, wherein the coprocessor is connected to a display screen, the display screen is controlled by a backlight area, and the remote control receiver receives a remote control command to inform the SOC main processor to switch a specific rendering mode and a normal operation mode; the SOC main processor receives a user command to output a video picture, calculates backlight data according to areas and provides a coprocessor for processing; the coprocessor receives a main processor control command, and in a normal working mode, the coprocessor receives SOC main processor pictures and backlight data and outputs the SOC main processor pictures and the backlight data to a display screen for displaying; in the rendering mode, the SOC main processor enters a sleep or off state, and the coprocessor generates pictures and backlight data by itself and transmits the pictures and the backlight data to the display screen.

Specifically, in the normal operation mode, the operation mode of the display device of the present invention is the same as that of most backlight area adjustment display devices, and the SOC sends out the picture and backlight data to be transmitted to the display screen for display through the coprocessor. At this point, the coprocessor may be considered transparent. This is the normal operating state of the display device. However, in addition to the normal operation mode, the display device of the present invention also supports a special display mode, which is called a screen rendering mode. The image rendering mode is triggered by a user through a remote controller or a key, or a trigger condition can be set by the user, for example, the image rendering mode is automatically entered after no signal input or no operation for a period of time. When the system enters a picture rendering mode, the SOC main processor and other devices enter a low-power-consumption operation or closing mode to save operation power consumption, and the SOC main processor only reserves a key and a remote controller control interface module so as to receive a control instruction of a user to exit the rendering mode and enter a normal working mode.

In the rendering mode, the picture and backlight of the display screen are controlled entirely by the co-processor (or FPGA). The coprocessor is different from the SOC main processor, has no video input interface, can only send out a specific static or dynamic picture in a rendering mode, does not receive the picture from the SOC main processor, cannot receive a video signal from the outside, and is completely generated by the coprocessor through a self-defined operation rule. The picture patterns generated by the coprocessor may be read from memory or transferred to the coprocessor by the SOC host processor prior to entering the rendering mode. And then, the coprocessor automatically generates backlight area data and a liquid crystal picture according to a control command given by the SOC.

In short, the coprocessor controls the backlight of the display screen as an N × M two-dimensional matrix, and the division of the backlight area of the N × M two-dimensional matrix is designed and completed when the display screen is manufactured. Meanwhile, the coprocessor controls the liquid crystal picture with the X X Y resolution. By sending out specific N X M two-dimensional matrix backlight data and X X Y liquid crystal picture data, a display picture can be composed. Through a plurality of preset backlight data and liquid crystal picture data, the display device can display a specific rendering picture. For a display screen with an nxm array backlight area and a resolution of X Y, the backlight data and the liquid crystal data sent by the coprocessor may be data pre-stored in a memory in advance or obtained by real-time operation of the coprocessor, which depends on a rendering mode. The coprocessor is provided with a plurality of different rendering modes which can be selected and set by the SOC main processor in a normal working mode, and set parameters and data are stored in a memory or are transmitted to the coprocessor by the SOC main processor in the normal working mode. After the rendering mode is set by the SOC, when the display equipment enters the rendering mode, corresponding rendering parameters read from the memory according to the rendering mode or parameters transmitted before the SOC main processor enters the rendering mode are generated, and corresponding backlight and liquid crystal data are transmitted to the display screen for displaying.

As shown in fig. 2 to 4, the present invention also discloses a method for displaying a scene with backlight rendering, which comprises the following steps:

4-3, in the liquid crystal control part, recording the coordinates, the shape and the color of the character to be displayed on the display screen by the coprocessor in a two-dimensional array, and realizing the character display on the picture by the coprocessor by controlling the RGB value of each pixel of the liquid crystal screen; for example, a portion displaying a red character, where R may be set to a corresponding value according to brightness and G and B are set to 0. The combination of the liquid crystal R G B can generate any color actually, and fine and colorful rendering pictures can be realized in such a way;

step 5, whether an instruction for exiting the rendering mode is received; if so, waking up the SOC main processor to inform the coprocessor to exit the rendering mode;

The following is a detailed description of the display principle of the present invention:

after the display equipment is started, the display equipment is in a normal working mode, at the moment, rendering mode parameters can be set through a remote controller or a key, then the display equipment enters the rendering mode through the remote controller or the key, and the display equipment can also be set to automatically enter the rendering mode under the condition that certain conditions are met. For example, in the case of no operation, or in the case of no signal from the external input interface, the display device may automatically enter the rendering state after a set time has elapsed. In the rendering mode, the remote controller and the key interface of the display device are still in a normal working state, so that the display device can exit the rendering mode through the remote controller or the key and enter the normal working mode.

The picture rendered by the invention can be dynamic or static. If the backlight data and the liquid crystal picture are fixed, the picture displayed by the display screen is fixed. However, the coprocessor also supports dynamic picture display. The backlight data or/and the liquid crystal display can be continuously updated or changed in a specific mode by setting a fixed time interval, and then a dynamic display picture can be presented.

As shown in fig. 3, to display a white object fixed at a certain position on the display screen, the backlight and liquid crystal data sent by the co-processor may be such. The backlight data sent by the coprocessor lights the backlight in the area, and the backlight is closed outside the area; similarly, the liquid crystal data is supplied with all white data (if R G B is set to the maximum value) and the dark image is supplied outside the area (R G B is set to 0). At this time, the picture displayed by the display device is displayed as full white in this area, and the rest areas are full dark. In this way, a specific still picture can be displayed.

The character picture in the step 4 also supports dynamic effects, the displayed characters can be used as a whole to set a certain running track, such as translation, rotation and the like, and each character can also be respectively set with different running tracks to realize the dynamic effects. The coprocessor calculates in real time to obtain the new position of the character and updates the backlight and the liquid crystal data. In addition, besides the character position can be changed dynamically, the color of each character can be changed dynamically by changing the R, G and B value of each character in real time, and even the size and the shape of the character can be changed in real time through certain operation. Thus, different dynamic rendering effects can be presented.

This can be done if a dynamic picture is to be displayed, such as a dynamic picture in which the white object is moving from left to right. The time interval parameter is preset, after the time interval, the backlight display area and the liquid crystal data are changed, and the backlight display area and the liquid crystal data are moved to the right by one area, so that dynamic picture display can be realized. The time interval can be transmitted to the coprocessor by the SOC through a control interface in advance, or read from a memory, and the direction and the track of the object motion can be set in advance, or generated by the coprocessor through real-time operation. The conventional dynamic ticker frame for testing backlight is an example of a dynamic frame, except that the backlight data and the frame are generated by the SOC main processor. The dynamic picture mentioned in the invention is directly generated by the coprocessor, and similar dynamic horse race lamp effect can be realized through backlight and liquid crystal picture control. Although the application displays a full-white object, the liquid crystal screen is composed of three primary colors of R G B, and some backlights also support independent control of three colors of R G B, so that the displayed picture can actually present different colors by providing different R G B component data of liquid crystal or different R G B data of backlights, and the rendered picture is more colorful and more entertaining.

In addition, as another embodiment, another dynamic picture display may also be realized by controlling the rgb color data of the backlight and/or the liquid crystal. In the dynamic picture, the displayed picture area can be static or dynamic, but the displayed color can be changed by controlling backlight data and/or liquid crystal RG B data. The display picture finally rendered may be a dynamic rendering picture formed by randomly changing the display position, color, and brightness at the same time.

Further, as a preferred embodiment, the rendering mode may also present another display effect. As shown in fig. 4, the image rendering effect generated by the display device using the mini-LED RGB backlight is generated based on the halo effect of the LED lamp, and the generated image looks like a colorful sky-fill.

By controlling the liquid crystal rgb for a white backlight, the following effects can be exhibited: by lighting the backlight LED of a certain area and controlling the liquid crystal of the area to be turned on, the halo effect similar to an LED lamp can be presented. By backlight and color control of the liquid crystal rgb, different color LED halos can be presented. The images in different areas are overlapped to present various rendering effects, as shown in fig. 4, as if a starry sky image is silent. By controlling the brightness of the backlight LEDs, the size of the halo can be controlled. By varying the value of rgb for each region, the color exhibited by the region can be controlled, thereby forming a multicolored picture frame.

As shown in fig. 4, the halo frame can also be dynamic, such as flashing, fading, color change, frame rotation, translation, or specific track motion, which can be easily implemented. This can be achieved by simply controlling the backlight brightness or/and the liquid crystal rgb data.

In summary, the static or dynamic rendering picture can be realized by the coprocessor, and the different rendering modes can be preset in the coprocessor or the memory in advance, and also can be opened for the user to define by himself, including the color, background, brightness, running track, etc. of the display area. Although a plurality of pictures can be built in the rendering picture provided by the technology in advance, the rendering picture is also open at the same time, and a user can exert imagination and create the rendering picture of the user.

It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The embodiments and features of the embodiments in the present application may be combined with each other without conflict. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Claims

1. A television with backlit scene rendering display, comprising: the system comprises an SOC main processor, and a remote control receiver and a coprocessor which are connected with the SOC main processor, wherein the coprocessor is connected with a display screen, the display screen adopts backlight area control, and the remote control receiver receives a remote controller command and informs the SOC main processor to switch a specific rendering mode and a normal working mode; the SOC main processor receives a user command to output a video picture, calculates backlight data according to areas and provides a coprocessor for processing; the coprocessor receives a main processor control command, and in a normal working mode, the coprocessor receives SOC main processor pictures and backlight data and outputs the SOC main processor pictures and the backlight data to a display screen for displaying; in a rendering mode, the SOC main processor enters a sleep or close state, the coprocessor generates pictures and backlight data by itself and transmits the pictures and the backlight data to a display screen, and the control of the coprocessor on backlight comprises the on-off of LEDs in each area and the brightness and color control of the LEDs; the coprocessor controls the backlight in a region unit, the coprocessor controls the liquid crystal of the display screen in a pixel unit, the R, G and B components of each pixel are independently controlled, and different picture colors are presented through the change of the liquid crystal colors.

2. The television with backlight rendering scene display of claim 1, wherein: the television is also provided with a key, the key is connected with the SOC main processor, and the SOC main processor switches a specific rendering mode and a normal working mode based on key input information.

3. The television with backlight rendering scene display of claim 1, wherein: the coprocessor is connected with a memory, the memory stores necessary parameter data during the operation of a rendering mode, and the parameter data comprises backlight data and liquid crystal data.

4. A method for displaying a scene with backlight rendering, which employs the television with the scene with backlight rendering of any one of claims 1 to 3, wherein: the method comprises the following steps:

step 1, when a television is started and is in a normal working mode, a user sets and stores rendering mode parameters through a remote controller or keys;

step 2, judging whether a command of entering a rendering mode of a remote controller or a key is received; when the SOC main processor obtains a rendering mode entering instruction input by a user, informing the coprocessor to enter a rendering mode and simultaneously enabling the SOC main processor to enter a sleep or close state, and executing the step 3; otherwise, executing step 2;

step 3, the coprocessor acquires necessary parameter data when the rendering mode works;

step 4-1, the coprocessor acquires the coordinate position and the display range of the character to be displayed and calculates the backlight area where the character is located;

step 5, judging whether an instruction of exiting the rendering mode of the remote controller or the key is received; if so, waking up the SOC main processor to inform the coprocessor to exit the rendering mode;

5. The method of claim 4, wherein the method comprises: and step 2, automatically triggering a rendering mode entering instruction by a user when the display equipment meets the set conditions.

6. The method of claim 4, wherein the method comprises: the character picture in the step 4 supports dynamic effect, the displayed characters are used as a whole to set a running track or each character is respectively provided with different running tracks, the coprocessor calculates in real time according to the running tracks to obtain new positions of the characters, and backlight and liquid crystal data are updated to realize the dynamic effect.

7. The method of claim 4, wherein the method comprises: the coprocessor dynamically changes the color of each character by changing the rgb value of each character in real time in step 4.

8. The method of claim 4, wherein the method comprises: and 4, the coprocessor changes the size and the shape of the character in real time to present different dynamic rendering effects.

9. The method of claim 4, wherein the method comprises: in the step 4-3, the coprocessor turns on the backlight LED in a certain area and controls the liquid crystal in the area to be turned on so as to present the halo effect of the LED lamp; or the co-processor is controlled by the backlight and the liquid crystal rgb color to present different color LED halos.

10. The method of claim 9, wherein the method comprises: the coprocessor controls the size of the halo by controlling the brightness of the backlight LED; the coprocessor controls the colors presented by each region by changing the rgb value of that region, thereby forming a colorful picture volume.