CN112540779A - Local dimming method for display device, display device and storage medium - Google Patents
Local dimming method for display device, display device and storage medium Download PDFInfo
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- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
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Abstract
The application discloses a local dimming method of a display device, the display device and a storage medium, wherein the display device comprises a first storage partition and a second storage partition which are positioned in different storage areas, and the method comprises the following steps: reading screen attributes of the display device from the first memory partition; searching local dimming configuration parameters corresponding to the screen attributes from the second storage partition according to preset rules; controlling the partition backlight brightness of the display device according to the local dimming configuration parameter; when the display device carries out system software upgrading, the first storage partition or the second storage partition is independently upgraded. The method and the device aim at solving the problem that system software of a television mainboard cannot be universal due to different parameters such as local dimming partition areas, partition brightness accuracy and driving current on the existing televisions with different models and sizes.
Description
Technical Field
The present invention relates to the field of display devices, and in particular, to a local dimming method for a display device, and a storage medium.
Background
At present, liquid crystal televisions are widely used, and from the technical development trend, how to reduce the power consumption of the backlight is most concerned. Because the backlight source is the largest energy consumer, the power consumption of the backlight source is reduced, and the power consumption of the whole machine is also greatly reduced. The techniques include improving the driving circuit of the backlight, improving the luminous efficiency of the LEDs, and developing new LED types, and currently, Local Dimming (i.e., Local Dimming) is the most easily implemented technique among these techniques, and the most obvious effect is achieved. Especially, the direct type LED backlight is matched with a local dimming technology, so that the electric quantity can be greatly reduced, the contrast value and the gray scale number of a display picture can be improved, the residual image can be reduced, and the like. New functions such as HDR (High-Dynamic Range, HDR for short) also put forward demands on the realization of backlight adjustment for the partitions.
In order to realize the function of partition backlight adjustment, a Local Dimming function needs to be added to the television. In the process of realizing the function, because the local dimming partition area, the partition brightness precision, the driving current and other parameters used on the televisions with different models and sizes are different, the system software of the television mainboard cannot be used universally, and troubles are caused for development, production and after sale.
The above is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission that the above is prior art.
Disclosure of Invention
The embodiment of the application aims to solve the problem that system software of a mainboard of a television cannot be universal due to different parameters such as local dimming partition areas, partition brightness accuracy and driving current in the existing televisions with different models and different sizes.
The embodiment of the application provides a local dimming method for a display device, wherein the display device comprises a first storage partition and a second storage partition which are positioned in different storage areas, and the method comprises the following steps:
reading screen attributes of the display device from the first memory partition;
searching local dimming configuration parameters corresponding to the screen attributes from the second storage partition according to preset rules;
controlling the partition backlight brightness of the display device according to the local dimming configuration parameter;
when the display device carries out system software upgrading, the first storage partition or the second storage partition is independently upgraded.
In some embodiments, the searching for the local dimming configuration parameter corresponding to the screen attribute from the second memory partition according to the preset rule includes:
and searching a file directory name corresponding to the screen attribute from the second storage partition, and analyzing the file directory name to obtain the local dimming configuration parameter, wherein the file directory name comprises the screen attribute.
In some embodiments, the screen attribute includes at least one of a screen reference number, movement information of the display device, and model information.
In some embodiments, the local dimming configuration parameters include a first direction division number, a second direction division number, a division luminance precision, and a driving current.
In some embodiments, further comprising: and forming the file directory name, and storing the local dimming configuration parameters in a file where the file directory name is located.
In some embodiments, the display device further includes a processing chip and a backlight brightness control chip communicating with each other through a preset communication protocol, and the controlling the partition backlight brightness of the display device according to the local dimming configuration parameter includes:
dividing the screen into subarea areas with the number of divisions in the first direction multiplied by the number of divisions in the second direction;
setting the partition brightness precision in the preset communication protocol according to the partition brightness precision;
setting the data length in a preset communication protocol according to the partition area and the partition brightness precision;
the processing chip converts the image brightness data into subarea backlight brightness data according to the subarea areas and the subarea brightness precision data;
the processing chip assembles the partitioned backlight brightness data into a data packet based on a protocol rule of the preset communication protocol and the data length, and sends the data packet to the backlight brightness control chip;
and the backlight brightness control chip controls the partition backlight brightness of the display device according to the partition brightness data of the data packet.
In some embodiments, when the display device is upgraded with system software, the first storage partition is upgraded separately, including:
and replacing different local dimming configuration parameters by directly switching the screen attribute of the first storage partition.
In some embodiments, the display device comprises at least one of a television, a display, and a monitor.
The application also provides a display device, which comprises a backlight brightness control chip, a processing chip in communication connection with the backlight brightness control chip and a display screen; the processing chip comprises a first memory partition and a second memory partition;
the processing chip is used for reading the screen attribute of the display device from the first storage partition and searching the local dimming configuration parameter corresponding to the screen attribute from the second storage partition according to a preset rule; and when the display device is used for upgrading system software, the first storage partition or the second storage partition is independently upgraded;
the backlight brightness control chip is used for controlling the partition backlight brightness of the display device according to the local dimming configuration parameters.
The present application also provides a computer readable storage medium storing one or more programs, which are executable by one or more processors to implement the steps in the method for local dimming of a display device.
The present application also provides a computer readable storage medium storing one or more programs, which are executable by one or more processors to implement the steps in the method for local dimming of a display device.
According to the embodiment of the application, the screen attribute of the display device is read from the first storage partition, the local dimming configuration parameter corresponding to the screen attribute is searched from the second storage partition according to a preset rule, and finally the partition backlight brightness of the display device is controlled according to the local dimming configuration parameter, so that the local dimming function of the display device is realized; and when the display device is upgraded with system software, the screen attribute of the first storage partition or the local dimming configuration parameter of the second storage partition is upgraded separately, so that the local dimming configuration parameter corresponding to the display screen of the display device is changed. So that the television is compatible with more local dimming schemes. The problem that system software cannot be shared due to the difference of parameters such as local dimming partition areas, partition brightness accuracy and driving current is solved.
Drawings
FIG. 1 is a hardware block diagram of an embodiment of a display device of the present application;
FIG. 2 is a block flow diagram illustrating an embodiment of a local dimming method for a display device according to the present disclosure;
FIG. 3 is a block flow diagram of one embodiment of step S300 in FIG. 2;
fig. 4 is a flowchart illustrating a local dimming method of a display device according to another embodiment of the present disclosure.
Detailed Description
For a better understanding of the above technical solutions, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
At present, liquid crystal televisions are widely used, and from the technical development trend, how to reduce the power consumption of the backlight is most concerned. Because the backlight source is the largest energy consumer, the power consumption of the backlight source is reduced, and the power consumption of the whole machine is also greatly reduced. The techniques include improving the driving circuit of the backlight, improving the luminous efficiency of the LEDs, and developing new LED types, and currently, Local Dimming (i.e., Local Dimming) is the most easily implemented technique among these techniques, and the most obvious effect is achieved. Especially, the direct type LED backlight is matched with a local dimming technology, so that the electric quantity can be greatly reduced, the contrast value and the gray scale number of a display picture can be improved, the residual image can be reduced, and the like. New functions such as HDR (High-Dynamic Range, HDR for short) also put forward demands on the realization of backlight adjustment for the partitions.
In order to realize the function of partition backlight adjustment, a Local Dimming function needs to be added to the television. In the process of realizing the function, because the local dimming partition area, the partition brightness precision, the driving current and other parameters used on the televisions with different models and sizes are different, the system software of the television mainboard cannot be used universally, and troubles are caused for development, production and after sale.
Therefore, the problem that system software of a television mainboard cannot be used universally due to different parameters such as local dimming partition areas, partition brightness accuracy and driving current used in televisions of different models and sizes needs to be solved currently. In view of the above, the present application provides a local dimming method for a display device, a display device and a storage medium.
Referring to fig. 1, a display device is described below, the display device includes a backlight brightness control chip 102, a processing chip 101 communicatively connected to the backlight brightness control chip 102, and a display screen 104; specifically, the backlight brightness control chip 102 and the processing chip 101 may be connected via a predetermined communication protocol (e.g., SPI communication protocol or I)2C communication protocol) and the like, the processing chip 101 includes a memory, and the memory includes a first memory partition and a second memory partition;
the processing chip 101 is configured to read a screen attribute of the display device from the first storage partition, and search a local dimming configuration parameter corresponding to the screen attribute from the second storage partition according to a preset rule; and the first storage partition or the second storage partition is used for carrying out independent upgrading when the display device carries out system software upgrading. The processing Chip 101 may employ a System-on-a-Chip, i.e., a System-on-a-Chip.
The backlight brightness control chip 102 is configured to control the partitioned backlight brightness of the display device according to the local dimming configuration parameter. The backlight brightness control chip 102 may directly perform the partition backlight brightness control on the display screen 104, and the backlight brightness control chip 102 may employ various processors, such as an MCU, which is fully called a Microcontroller Unit, i.e., a single chip microcomputer.
The display device further comprises a constant current driving chip 103, wherein the constant current driving chip 103 is in communication connection with the backlight brightness control chip 102 and is used for receiving the local dimming configuration parameters of the backlight brightness control chip 102 and outputting driving current to control the display screen 104 to realize subarea backlight control.
Those skilled in the art will appreciate that the display device configuration shown in fig. 1 is not intended to be limiting, and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, an operating system and a display device local dimming program may be included in a memory of a processing chip 101, which is a computer storage medium. The operating system is a program for managing and controlling hardware and software resources of the display device, and supports the operation of a local dimming program of the display device and other software or programs.
In an embodiment, the processing chip 101 may be configured to call a stored local dimming program of the display device, and execute the method including:
reading screen attributes of the display device from the first memory partition;
searching local dimming configuration parameters corresponding to the screen attributes from the second storage partition according to preset rules;
controlling the partition backlight brightness of the display device according to the local dimming configuration parameter;
when the display device carries out system software upgrading, the first storage partition or the second storage partition is independently upgraded.
In an embodiment, the processing chip 101 may be configured to call a stored local dimming program of the display device, and execute the method including:
the searching for the local dimming configuration parameter corresponding to the screen attribute from the second storage partition according to the preset rule includes:
and searching a file directory name corresponding to the screen attribute from the second storage partition, and analyzing the file directory name to obtain the local dimming configuration parameter, wherein the file directory name comprises the screen attribute.
In an embodiment, the processing chip 101 may be configured to call a stored local dimming program of the display device, and execute the method including:
the screen attribute includes at least one of a screen reference number, movement information of the display device, and model information.
In an embodiment, the processing chip 101 may be configured to call a stored local dimming program of the display device, and execute the method including:
the local dimming configuration parameters comprise the number of first direction partitions, the number of second direction partitions, the partition brightness accuracy and the driving current.
In an embodiment, the processing chip 101 may be configured to call a stored local dimming program of the display device, and execute the method including:
in an embodiment, the processing chip 101 may be configured to call a stored local dimming program of the display device, and execute the method further including:
and forming the file directory name, and storing the local dimming configuration parameters in a file where the file directory name is located.
In an embodiment, the processing chip 101 may be configured to call a stored local dimming program of the display device, and execute the method including:
the controlling the partitioned backlight brightness of the display device according to the local dimming configuration parameter comprises:
dividing the screen into subarea areas with the number of divisions in the first direction multiplied by the number of divisions in the second direction;
setting the partition brightness precision in the preset communication protocol according to the partition brightness precision;
setting the data length in a preset communication protocol according to the partition area and the partition brightness precision;
the processing chip 101 converts the image brightness data into subarea backlight brightness data according to the subarea areas and the subarea brightness precision data;
the processing chip 101 assembles the partitioned backlight brightness data into a data packet based on the protocol rule of the preset communication protocol and the data length, and sends the data packet to the backlight brightness control chip 102;
the backlight brightness control chip 102 controls the partitioned backlight brightness of the display device according to the partitioned brightness data of the data packet.
In an embodiment, the processing chip 101 may be configured to call a stored local dimming program of the display device, and execute the method including:
when the display device carries out system software upgrading, the first storage partition carries out independent upgrading and comprises the following steps:
and replacing different local dimming configuration parameters by directly switching the screen attribute of the first storage partition.
In an embodiment, the processing chip 101 may be configured to call a stored local dimming program of the display device, and execute the method including:
the display device includes at least one of a television, a display, and a monitor.
The display device reads the screen attribute of the display device from the first storage partition, searches the local dimming configuration parameter corresponding to the screen attribute from the second storage partition according to a preset rule, and finally controls the partition backlight brightness of the display device according to the local dimming configuration parameter to realize the local dimming function of the display device; and when the display device is upgraded with system software, the screen attribute of the first memory partition or the local dimming configuration parameter of the second memory partition is upgraded separately, so as to change the local dimming configuration parameter corresponding to the display screen 104 of the display device. So that the television is compatible with more local dimming schemes. The problem that system software cannot be shared due to the difference of parameters such as local dimming partition areas, partition brightness accuracy and driving current is solved.
Referring to fig. 2, based on the hardware architecture of the display device shown in fig. 1, a first embodiment of a local dimming method for a display device according to the present application is provided, where the display device includes a first memory partition and a second memory partition located in different memory areas, and the local dimming method for a display device includes the following steps:
s100, reading the screen attribute of the display device from the first storage partition;
the first memory partition and the second memory partition may be memories used by the display device to store non-volatile data, for example, a single divided binary partition of an eprorm (Electrically Erasable Programmable read only memory), flash (flash memory) or other memory.
The display device of the present embodiment may be at least one of a television, a monitor, and a monitor. This embodiment mainly describes a television as an embodiment.
The screen attribute is used to identify the use screen of the television. The screen attribute may include at least one of a screen reference number, movement information of the display device, and model information. The screen reference number is generally an index number, and is separately stored in an assigned address of eeprom or flash (emmc or a binary partition separately divided by other memories is used to replace eeprom). The movement information and model information of the display device are numbers representing character strings or indexes of the movement and model information corresponding to the television display screen 104. And also separately at the designated address of eeprom or flashep.
S200, searching a local dimming configuration parameter corresponding to the screen attribute from the second storage partition according to a preset rule;
the local dimming configuration parameters represent local dimming strategies corresponding to screen attributes, and include the number of first-direction partitions, the number of second-direction partitions, partition brightness accuracy and driving currents. The first direction and the second direction should be perpendicular to each other, for example, the first direction may be a transverse direction, and the second direction may be a longitudinal direction. Or may take the opposite direction as defined above.
In this embodiment, the local dimming configuration parameters are set separately from the screen attributes, the local dimming configuration parameters are set in the second storage partition, and the screen attributes are set in the first storage partition. Then, the step S200 further includes:
and searching a file directory name corresponding to the screen attribute from the second storage partition, and analyzing the file directory name to obtain the local dimming configuration parameter, wherein the file directory name comprises the screen attribute.
The following is illustrated by a typical example:
the following file directory names exist in the second storage partition:
/factory/model_type/panelIndex/panel.ini。
in this example, factor represents the name of the second memory partition, the combination of model _ type is a character string formed by splicing the information obtained in step S100 according to rules, model represents the movement information of the display screen 104, type represents the model information of the display screen 104, and panel index represents the screen reference number obtained in step S100, where the model information and the panel index may be named according to a certain rule or directly used as a directory name; ini is a file used to store Local Dimming related parameters (i.e., Local Dimming configuration parameters).
The screen reference number, the movement information of the display device and the model information obtained in step S100 can be used to search the file directory name corresponding to the screen reference number, the movement information of the display device and the model information in the second storage partition, so as to obtain the local dimming configuration parameters.
In a typical example, the local dimming configuration parameter contents stored in the panel.
Partition areas, for example, divide the entire screen into: 10 partitions in the horizontal direction and 8 partitions in the vertical direction, the partitions are defined as:
[LocalDimmingParam]
blockNumH is 10; number of horizontal partitions
blockNumV ═ 8; number of vertical partitions
spiDataBitDepth 8; how many bits to use for partition brightness, 8 for 8 bits, 10 for 10 bits, and so on
hdr boost current is 3; #0 was 120mA and 3 was 200 mA.
Wherein, blockNumH represents the number of horizontal partitions, blockNumV represents the number of vertical partitions, spidatabitdeth represents the partition brightness, and hdrBoostCurrent represents the drive current.
S300, controlling the partition backlight brightness of the display device according to the local dimming configuration parameters;
on the basis of obtaining the local dimming configuration parameter, the television controls the partition backlight brightness of the display screen 104 according to the local dimming configuration parameter. Specifically, the television further includes a processing chip 101 and a backlight brightness control chip 102, which communicate with each other through a preset communication protocol, in this embodiment, the preset communication protocol may adopt an SPI communication protocol. Referring to fig. 3, step S300 specifically includes:
s310, dividing the screen into subarea areas with the number of divisions in the first direction multiplied by the number of divisions in the second direction;
specifically, the display screen 104 may be divided into blockNumH × blockNumV partitions according to the blockNumH and the blockNumV obtained in step S200. For example, when blockNumH is 10 and blockNumV is 8, the screen is divided into 10 × 8-80 divisional areas.
S320, setting the partition brightness precision in the preset communication protocol according to the partition brightness precision;
specifically, the spiDataBitDepth obtained according to the step S200 sets the partition brightness precision of the SPI communication protocol; for example, spiDataBitDepth is 8, then an 8-bit address is set in the SPI communication protocol for storing the partition brightness.
S330, setting the data length in a preset communication protocol according to the partition area and the partition brightness precision;
specifically, the partition area and the partition luminance accuracy obtained by S310 and S320 set the data length in the SPI communication protocol.
S340, the processing chip 101 converts the image brightness data into subarea backlight brightness data according to the subarea area and the subarea brightness precision data;
specifically, the processing chip 101 outputs image luminance data according to the division of the divisional area, and converts the image luminance data into binary divisional backlight luminance data according to the divisional luminance accuracy.
S350, the processing chip 101 assembles the partitioned backlight brightness data into a data packet based on the protocol rule of the preset communication protocol and the data length, and sends the data packet to the backlight brightness control chip 102;
specifically, the partitioned backlight brightness data obtained in step S340 is assembled into data packets according to the protocol rules of the SPI communication protocol and the data length determined in step S330. And sends the data packet to the backlight brightness control chip 102.
S360, the backlight brightness control chip 102 controls the partitioned backlight brightness of the display device according to the partitioned brightness data of the data packet.
Specifically, the backlight brightness control chip 102 receives the data packet of S350, parses the data packet, and implements the divisional backlight brightness control through the constant current driving chip 103 in communication with the backlight brightness control chip 102.
S400, when the display device carries out system software upgrading, the first storage partition or the second storage partition is independently upgraded.
In the existing method, because parameters such as a partition area, partition brightness precision, driving current and the like of local dimming configuration parameters used on televisions with different models and different sizes are different, software of a processing chip 101 of a mainboard of the television cannot be used universally, and troubles are caused for development, production and after sale.
In this embodiment, when the display device performs system software upgrade, the first storage partition or the second storage partition may be upgraded separately. In particular, in some embodiments, the second memory partition may be upgraded separately. In other words, the first memory partition storing the screen attribute may not be upgraded, and the second memory partition storing the local dimming configuration parameter may be upgraded. In this way, when the processing chip 101 performs system software upgrade, the first storage partition is not upgraded, so as to ensure that the hardware of the display screen 104 is matched with the system software parameters; the second memory partition is upgraded together with the SOC system software, so that the television is compatible with more local dimming configuration parameters, and more local dimming schemes are supported.
In other embodiments, the first memory partition may be upgraded separately. Specifically, after the television produces the main board through SMT (i.e., surface mount technology), the screen reference number of the first storage partition may be directly switched in a factory menu, or the first storage partition may be separately upgraded. Each television has parameters such as specific screen parameter number, movement information of the display device, model information and the like. And the specific screen reference number, the movement information and the model information of the display device have a one-to-one correspondence relationship with the local dimming configuration parameters. By switching the screen parameter number of the first storage partition, the local dimming configuration parameter corresponding to the display screen 104 of the television can be changed. Thereby accommodating more local dimming schemes.
In this embodiment, the screen attribute of the display device is read from the first storage partition, the local dimming configuration parameter corresponding to the screen attribute is searched from the second storage partition according to a preset rule, and finally the partition backlight brightness of the display device is controlled according to the local dimming configuration parameter, so as to realize the local dimming function of the display device; and when the display device is upgraded with system software, the screen attribute of the first memory partition or the local dimming configuration parameter of the second memory partition is upgraded separately, so as to change the local dimming configuration parameter corresponding to the display screen 104 of the display device. So that the television is compatible with more local dimming schemes. The problem that system software cannot be shared due to the difference of parameters such as local dimming partition areas, partition brightness accuracy and driving current is solved.
Based on the same inventive concept, please refer to fig. 4, the present application further proposes an embodiment two, which is based on the embodiment one.
Example two
The local dimming method of the display device of the embodiment comprises the following steps:
s500, forming the file directory name, and storing the local dimming configuration parameters in a file where the file directory name is located;
in the embodiment, the screen attribute and the local dimming configuration parameter are stored separately, so that the local dimming configuration parameter of the television can be found conveniently by the screen attribute. A file directory name convenient for searching should be set in the second storage partition, and a file in which the file directory name is stored has a local dimming configuration parameter. For example, the file directory name may be a directory name including the movement information of the display screen 104, the model information of the display screen 104, and the screen reference number in the first embodiment, or may be a directory name of one or two screen attributes of the movement information of the display screen 104, the model information of the display screen 104, and the screen reference number. For example:
and/factory/model _ type/panel.ini or/factory/model/panel index/panel.ini.
Step S500 is a step of separating the stored screen attribute and the local dimming configuration parameter, and the acquisition source of the screen attribute and the local dimming configuration parameter is determined, which is the basis for subsequently searching the local dimming configuration parameter corresponding to the screen attribute from the second storage partition according to the preset rule.
S100, reading the screen attribute of the display device from the first storage partition;
s200, searching a local dimming configuration parameter corresponding to the screen attribute from the second storage partition according to a preset rule;
s300, controlling the partition backlight brightness of the display device according to the local dimming configuration parameters;
s400, when the display device carries out system software upgrading, the first storage partition or the second storage partition is independently upgraded.
The present application also provides a computer readable storage medium storing one or more programs, which are executable by one or more processors to implement the steps in the method for local dimming of a display device.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A local dimming method for a display device, the display device including a first memory partition and a second memory partition located in different memory areas, the method comprising:
reading screen attributes of the display device from the first memory partition;
searching local dimming configuration parameters corresponding to the screen attributes from the second storage partition according to preset rules;
controlling the partition backlight brightness of the display device according to the local dimming configuration parameter;
when the display device carries out system software upgrading, the first storage partition or the second storage partition is independently upgraded.
2. The method according to claim 1, wherein the searching for the local dimming configuration parameter corresponding to the screen attribute from the second memory partition according to a preset rule comprises:
and searching a file directory name corresponding to the screen attribute from the second storage partition, and analyzing the file directory name to obtain the local dimming configuration parameter, wherein the file directory name comprises the screen attribute.
3. The method of claim 2, wherein the screen attribute comprises at least one of a screen reference number, movement information of a display device, and model information.
4. The method of claim 3, wherein the local dimming configuration parameters comprise a first direction division number, a second direction division number, a division luminance precision, and a driving current.
5. The method of claim 2, further comprising: and forming the file directory name, and storing the local dimming configuration parameters in a file where the file directory name is located.
6. The method of claim 4, wherein the display device further comprises a processing chip and a backlight brightness control chip communicating with each other via a preset communication protocol, and the controlling the partitioned backlight brightness of the display device according to the local dimming configuration parameter comprises:
dividing the screen into subarea areas with the number of divisions in the first direction multiplied by the number of divisions in the second direction;
setting the partition brightness precision in the preset communication protocol according to the partition brightness precision;
setting the data length in a preset communication protocol according to the partition area and the partition brightness precision;
the processing chip converts the image brightness data into subarea backlight brightness data according to the subarea areas and the subarea brightness precision data;
the processing chip assembles the partitioned backlight brightness data into a data packet based on a protocol rule of the preset communication protocol and the data length, and sends the data packet to the backlight brightness control chip;
and the backlight brightness control chip controls the partition backlight brightness of the display device according to the partition brightness data of the data packet.
7. The method of claim 4, wherein the first memory partition is separately upgraded when the display device is upgraded with system software, and the method comprises:
and replacing different local dimming configuration parameters by directly switching the screen attribute of the first storage partition.
8. The method of any of claims 1-7, wherein the display device comprises at least one of a television, a display, and a monitor.
9. The display device is characterized by comprising a backlight brightness control chip, a processing chip in communication connection with the backlight brightness control chip and a display screen; the processing chip comprises a first memory partition and a second memory partition;
the processing chip is used for reading the screen attribute of the display device from the first storage partition and searching the local dimming configuration parameter corresponding to the screen attribute from the second storage partition according to a preset rule; and when the display device is used for upgrading system software, the first storage partition or the second storage partition is independently upgraded;
the backlight brightness control chip is used for controlling the partition backlight brightness of the display device according to the local dimming configuration parameters.
10. A computer readable storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement the steps in the method for local dimming of a display device according to any one of claims 1 to 8.
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