CN117037669A - Transmission processing method and device for display data - Google Patents
Transmission processing method and device for display data Download PDFInfo
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- G—PHYSICS
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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
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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Abstract
The disclosure provides a transmission processing method and device for display data, and belongs to the technical field of display. The transmission processing method of the display data is applied to a graphic processor and comprises the following steps: acquiring a display signal; generating a display data stream of at least one row of sub-pixels according to the display signal, wherein the display data stream comprises a plurality of groups of display data, each group of display data comprises a gray scale value and address data of at least one sub-pixel for displaying the gray scale value, and the gray scale values included in different groups of display data are different; and sending the display data stream to a display driving chip. The embodiment of the disclosure can improve the transmission efficiency of the display data.
Description
Technical Field
The disclosure relates to the technical field of display, and in particular relates to a transmission processing method and device for display data.
Background
When the display screen refreshes display content, each subpixel needs to be refreshed, and each refresh needs to transmit a display data stream of a frame of display image. With the development of display technology, display screens are developed towards high refresh rate and high resolution display, and the high refresh rate and high resolution can lead to an increase in total data amount of display data stream, and when display is performed, display data needs to be transmitted from a graphics processor to a display driving chip, but the existing transmission bandwidth cannot meet higher display requirements.
Disclosure of Invention
The technical problem to be solved by the present disclosure is to provide a method and an apparatus for processing transmission of display data, which can improve transmission efficiency of display data.
In order to solve the above technical problems, the embodiments of the present disclosure provide the following technical solutions:
in one aspect, a transmission processing method of display data is provided, which is applied to a graphics processor, and includes:
acquiring a display signal;
generating a display data stream of at least one row of sub-pixels according to the display signal, wherein the display data stream comprises a plurality of groups of display data, each group of display data comprises a gray scale value and address data of at least one sub-pixel for displaying the gray scale value, and the gray scale values included in different groups of display data are different;
and sending the display data stream to a display driving chip.
In some embodiments, the sending the display data stream to a display driver chip includes:
and in a display data stream configuration VSC stage, the display data stream is sent to the display driving chip.
In some embodiments, the display data stream includes all gray scale values corresponding to the at least one row of subpixels.
In some embodiments, the at least one row of subpixels includes a first color subpixel, a second color subpixel, and a third color subpixel, the first color, the second color, and the third color being different, the display data stream including:
The first part data comprises display data of at least one group of first color sub-pixels, and the display data of each group of first color sub-pixels comprises a gray scale value and address data of at least one first color sub-pixel for displaying the gray scale value;
the second part of data comprises display data of at least one group of second color sub-pixels, and the display data of each group of second color sub-pixels comprises a gray scale value and address data of at least one second color sub-pixel for displaying the gray scale value;
and the third part of data comprises display data of at least one group of third-color sub-pixels, and the display data of each group of third-color sub-pixels comprises a gray scale value and address data of at least one third-color sub-pixel for displaying the gray scale value.
In some embodiments, the sending the display data stream to a display driver chip includes:
and sequentially transmitting the first part of data, the second part of data and the third part of data to the display driving chip.
The embodiment of the disclosure also provides a transmission processing method of display data, which is applied to a display driving chip and comprises the following steps:
Receiving a display data stream of a graphic processor, wherein the display data stream comprises a plurality of groups of display data, each group of display data comprises a gray scale value and address data of at least one subpixel for displaying the gray scale value, and the gray scale values included in different groups of display data are different;
decoding the display data stream to obtain a gray scale value corresponding to the sub-pixel;
and driving the sub-pixels to display according to the gray scale values corresponding to the sub-pixels.
In some embodiments, decoding the display data stream to obtain a gray scale value corresponding to the subpixel includes:
decoding address data in the display data stream to obtain an address of at least one sub-pixel corresponding to each gray scale value;
and obtaining the gray scale value corresponding to each sub-pixel according to the address of at least one sub-pixel corresponding to each gray scale value.
In some embodiments, the display data stream includes all gray scale values corresponding to the at least one row of subpixels.
In some embodiments, the at least one row of subpixels includes a first color subpixel, a second color subpixel, and a third color subpixel, the first color, the second color, and the third color being different, the display data stream including:
The first part data comprises display data of at least one group of first color sub-pixels, and the display data of each group of first color sub-pixels comprises a gray scale value and address data of at least one first color sub-pixel for displaying the gray scale value;
the second part of data comprises display data of at least one group of second color sub-pixels, and the display data of each group of second color sub-pixels comprises a gray scale value and address data of at least one second color sub-pixel for displaying the gray scale value;
and the third part of data comprises display data of at least one group of third-color sub-pixels, and the display data of each group of third-color sub-pixels comprises a gray scale value and address data of at least one third-color sub-pixel for displaying the gray scale value.
In some embodiments, the receiving a display data stream of a graphics processor includes:
and receiving the first part of data, the second part of data and the third part of data which are sequentially transmitted by the graphic processor.
The embodiment of the disclosure also provides a transmission processing device of display data, which is applied to a graphics processor and comprises:
The acquisition module is used for acquiring the display signals;
the generating module is used for generating a display data stream of at least one row of sub-pixels according to the display signal, wherein the display data stream comprises a plurality of groups of display data, each group of display data comprises a gray scale value and address data of at least one sub-pixel for displaying the gray scale value, and the gray scale values included in different groups of display data are different;
and the sending module is used for sending the display data stream to a display driving chip.
In some embodiments, the sending module is specifically configured to send the display data stream to the display driver chip in a display data stream configuration VSC stage.
In some embodiments, the display data stream includes all gray scale values corresponding to the at least one row of subpixels.
In some embodiments, the at least one row of subpixels includes a first color subpixel, a second color subpixel, and a third color subpixel, the first color, the second color, and the third color being different, the display data stream including:
the first part data comprises display data of at least one group of first color sub-pixels, and the display data of each group of first color sub-pixels comprises a gray scale value and address data of at least one first color sub-pixel for displaying the gray scale value;
The second part of data comprises display data of at least one group of second color sub-pixels, and the display data of each group of second color sub-pixels comprises a gray scale value and address data of at least one second color sub-pixel for displaying the gray scale value;
and the third part of data comprises display data of at least one group of third-color sub-pixels, and the display data of each group of third-color sub-pixels comprises a gray scale value and address data of at least one third-color sub-pixel for displaying the gray scale value.
In some embodiments, the sending module is specifically configured to sequentially transmit the first portion of data, the second portion of data, and the third portion of data to the display driver chip.
The embodiment of the disclosure also provides a transmission processing device of display data, which is applied to a display driving chip and comprises:
the display data stream comprises a plurality of groups of display data, each group of display data comprises a gray scale value and address data of at least one subpixel for displaying the gray scale value, and the gray scale values included in different groups of display data are different;
The decoding module is used for decoding the display data stream to obtain a gray scale value corresponding to the sub-pixel;
and the driving module is used for driving the sub-pixels to display according to the gray scale values corresponding to the sub-pixels.
In some embodiments, the decoding module is specifically configured to decode address data in the display data stream to obtain an address of at least one subpixel corresponding to each gray-scale value; and obtaining the gray scale value corresponding to each sub-pixel according to the address of at least one sub-pixel corresponding to each gray scale value.
In some embodiments, the display data stream includes all gray scale values corresponding to the at least one row of subpixels.
In some embodiments, the at least one row of subpixels includes a first color subpixel, a second color subpixel, and a third color subpixel, the first color, the second color, and the third color being different, the display data stream including:
the first part data comprises display data of at least one group of first color sub-pixels, and the display data of each group of first color sub-pixels comprises a gray scale value and address data of at least one first color sub-pixel for displaying the gray scale value;
The second part of data comprises display data of at least one group of second color sub-pixels, and the display data of each group of second color sub-pixels comprises a gray scale value and address data of at least one second color sub-pixel for displaying the gray scale value;
and the third part of data comprises display data of at least one group of third-color sub-pixels, and the display data of each group of third-color sub-pixels comprises a gray scale value and address data of at least one third-color sub-pixel for displaying the gray scale value.
In some embodiments, the receiving a display data stream of a graphics processor includes:
the receiving module is specifically configured to receive the first portion of data, the second portion of data, and the third portion of data that are sequentially transmitted by the graphics processor.
The embodiment of the disclosure also provides a transmission processing device for display data, which comprises: a memory and an actuator for executing instructions stored in the memory to implement steps in the transmission processing method of display data as described above.
The embodiment of the disclosure has the following beneficial effects:
in the above scheme, the display data stream is divided into a plurality of groups of display data, each group of display data comprises a gray scale value and address data for displaying at least one subpixel of the gray scale value, and the gray scale values included in different groups of display data are different, so that the same gray scale value is only required to be transmitted once, the repeated transmission of the same gray scale value is avoided, the transmission efficiency of the display data can be improved, and the transmission of the display data with higher resolution is possible on the premise of not improving the transmission bandwidth.
Drawings
FIG. 1 is a diagram of a related art transmission display data stream;
FIG. 2 is a flow chart illustrating a method for processing transmission of display data on the graphics processor side according to an embodiment of the disclosure;
FIG. 3 is a schematic diagram showing data flow according to an embodiment of the present disclosure;
fig. 4 is a flowchart illustrating a method for processing transmission of display data on a display driver chip side according to an embodiment of the disclosure;
FIG. 5 is a schematic diagram of mapping a display data stream to subpixels of a display panel according to an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of a transmission processing device for display data on the graphics processor side according to an embodiment of the disclosure;
fig. 7 is a schematic structural diagram of a transmission processing device for display data on a display driving chip side according to an embodiment of the disclosure.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present disclosure more apparent, the following detailed description will be given with reference to the accompanying drawings and the specific embodiments.
In existing display schemes, the display data for each subpixel is transmitted separately. After the graphic processor acquires the display signals transmitted by the display card, generating a display data stream, wherein the display data stream comprises the gray scale value of each subpixel and the address code of the subpixel; when display is performed, the graphic processor sequentially transmits display data of each row of sub-pixels to the display driving chip according to the row sequence. The interface between the display card and the graphic processor of the display device comprises eDP, mipi, lvds and other interfaces, and is characterized in that all data are transmitted on a bus, the graphic processor sequentially sends the display data to the display driving chip according to the display content in pixel sequence, and the display data received by the display driving chip are display data of one pixel and display data of one pixel are transmitted.
With the increase of display resolution and refresh rate, the transmission bandwidth between the existing graphics processor and the display driver chip has not been able to afford higher display requirements. In order to improve the transmission efficiency, a common method is to perform algorithm compression on display data to reduce the amount of transmission data. The display data can be compressed to achieve a higher display effect by using fewer data transmission, but the display data is subjected to algorithm compression to cause data loss or display distortion, so that the requirements of application scenes with high display quality cannot be met.
As shown in fig. 1, the display panel includes a plurality of rows of pixels 01, and assuming that each row includes n pixels 01, the pixels 01 include red sub-pixels 011, green sub-pixels 012, and blue sub-pixels 013, the display data of the row of pixels has a total of 3n gray-scale values, and when the display data stream of the row of pixels is transmitted to the display driving chip, the graphics processor transmits the gray-scale value of the first red sub-pixel 011 at the first pixel clock, the gray-scale value of the first green sub-pixel 012 at the second pixel clock, the gray-scale value of the first blue sub-pixel 013 at the third pixel clock, the gray-scale value of the second red sub-pixel 011 at the fourth pixel clock, …, and the gray-scale value of the nth blue sub-pixel 013 at the 3 nth pixel clock, the gray-scale level of one display panel is often less than 3n, such as 255 or 1024, so many gray-scale values are repeatedly transmitted.
The embodiment of the disclosure provides a transmission processing method and device for display data, which can improve the transmission efficiency of the display data.
An embodiment of the present disclosure provides a transmission processing method of display data, applied to a graphics processor, as shown in fig. 2, including:
step 101: acquiring a display signal;
in this embodiment, the graphics processor receives a display signal transmitted by the graphics card, where the display signal is generated according to display content to be refreshed by the display panel.
Step 102: generating a display data stream of at least one row of sub-pixels according to the display signal, wherein the display data stream comprises a plurality of groups of display data, each group of display data comprises a gray scale value and address data of at least one sub-pixel for displaying the gray scale value, and the gray scale values included in different groups of display data are different;
before transmitting the display data to the display driving chip, the graphic processor counts the gray scale values of at least one row of sub-pixels, determines the gray scale values appearing in the display data of at least one row of sub-pixels, determines the sub-pixels corresponding to each gray scale value, and encodes the addresses of one or more sub-pixels corresponding to each gray scale value. For example, when the gray level value 1 corresponds to the subpixel R1, the address of the subpixel R1 is encoded to obtain the address data P 1，x The method comprises the steps of carrying out a first treatment on the surface of the The gray level value 2 corresponds to the sub-pixels R2 and R3, and then the addresses of the sub-pixels R2 and R3 are encoded to obtain address data P 2，x 。
After generating the display data stream of at least one row of subpixels, the graphics processor may sequentially transmit the display data of each row of subpixels to the display driver chip in a row order. The display data stream transmitted by the graphic processor each time can comprise display data of one row of sub-pixels and can also comprise display data of a plurality of rows of sub-pixels; the display data stream transmitted each time may include display data of a portion of the gray scale values of at least one row of the sub-pixels, and of course, in order to improve the transmission efficiency, the display data stream transmitted each time may also include display data of all the gray scale values of at least one row of the sub-pixels.
In some embodiments, when the at least one row of subpixels includes a first color subpixel, a second color subpixel, and a third color subpixel, the first color, the second color, and the third color are different from each other, display data of the different color subpixels need to be separated in a display data stream, the display data stream including:
the first part data comprises display data of at least one group of first color sub-pixels, and the display data of each group of first color sub-pixels comprises a gray scale value and address data of at least one first color sub-pixel for displaying the gray scale value;
The second part of data comprises display data of at least one group of second color sub-pixels, and the display data of each group of second color sub-pixels comprises a gray scale value and address data of at least one second color sub-pixel for displaying the gray scale value;
and the third part of data comprises display data of at least one group of third-color sub-pixels, and the display data of each group of third-color sub-pixels comprises a gray scale value and address data of at least one third-color sub-pixel for displaying the gray scale value.
In a specific example, taking a display panel including red sub-pixels, green sub-pixels and blue sub-pixels as an example, after receiving a display signal transmitted by a display card, the graphics processor may count the gray scale values of all the red sub-pixels of a row of pixels, determine the gray scale values corresponding to all the red sub-pixels, for example, the gray scale values corresponding to all the red sub-pixels include red gray scale value 1 and red gray scale value 2 …, then determine the address of the red sub-pixel corresponding to each red gray scale value, for example, determine that the red gray scale value 1 corresponds to red sub-pixel 0 to red sub-pixel m, that is, the red sub-pixel 0 to red sub-pixel m all displays the red gray scale value 1, encode the addresses of the red sub-pixels 0 to red sub-pixel m to obtain address data, and form a group of display data with the address data and the red gray scale value 1, as shown in fig. 3; and determining that the red gray scale value 2 corresponds to the red sub-pixel n-red sub-pixel p, namely, the red sub-pixel n-red sub-pixel p displays the red gray scale value 2, then encoding the address of the red sub-pixel n-red sub-pixel p to obtain address data, forming a group of display data by the address data and the red gray scale value 2, …, and so on to obtain a plurality of groups of display data corresponding to the red sub-pixels in the row of pixels.
Similarly, the gray scale values of all the green sub-pixels of a row of pixels are counted, the gray scale values corresponding to all the green sub-pixels are determined, for example, the gray scale values corresponding to all the green sub-pixels comprise a green gray scale value 1 and a green gray scale value 2 …, then the address of the green sub-pixel corresponding to each green gray scale value is determined, for example, the address of the green sub-pixel 0-green sub-pixel m corresponding to the green gray scale value 1, that is, the green sub-pixel 0-green sub-pixel m displays the green gray scale value 1, then the address of the green sub-pixel 0-green sub-pixel m is encoded to obtain address data, and the address data and the green gray scale value 1 form a group of display data, as shown in fig. 3; and determining that the green gray scale value 2 corresponds to the green sub-pixels n-p, namely, the green sub-pixels n-p all display the green gray scale value 2, then encoding addresses of the green sub-pixels n-p to obtain address data, forming a group of display data by the address data and the green gray scale value 2, …, and so on to obtain a plurality of groups of display data corresponding to the green sub-pixels in the row of pixels. Counting the gray scale values of all the blue sub-pixels of one row of pixels, determining the gray scale values corresponding to all the blue sub-pixels, for example, the gray scale values corresponding to all the blue sub-pixels comprise blue gray scale value 1 and blue gray scale value 2 …, determining the address of the blue sub-pixel corresponding to each blue gray scale value, for example, determining that the blue gray scale value 1 corresponds to blue sub-pixels 0-m, that is, the blue sub-pixels 0-m display the blue gray scale value 1, and encoding the addresses of the blue sub-pixels 0-m to obtain address data, and forming the address data and the blue gray scale value 1 into a group of display data, as shown in fig. 3; and determining that the blue gray scale value 2 corresponds to the blue sub-pixel n-blue sub-pixel p, namely, the blue sub-pixel n-blue sub-pixel p displays the blue gray scale value 2, then encoding addresses of the blue sub-pixel n-blue sub-pixel p to obtain address data, forming a group of display data by the address data and the blue gray scale value 2, …, and so on to obtain a plurality of groups of display data corresponding to the blue sub-pixels in the row of pixels.
Finally, the display data stream generated by the graphic processor includes address data of red gray scale value 1 and red sub-pixel 0-red sub-pixel m, address data of red gray scale value 2 and red sub-pixel n-red sub-pixel p, address data of green gray scale value 1 and green sub-pixel 0-green sub-pixel m, address data of green gray scale value 2 and green sub-pixel n-green sub-pixel p, address data of …, address data of blue gray scale value 1 and blue sub-pixel 0-blue sub-pixel m, and address data of blue gray scale value 2 and blue sub-pixel n-blue sub-pixel p.
The address of the sub-pixel is used to indicate which sub-pixel in the row of pixels. As shown in fig. 3, the display data of the sub-pixels of different colors may be spaced by Fill data FS (Fill start) and FE (Fill end), where FS represents the start of the Fill data and FE represents the end of the Fill data.
In the display data stream of this embodiment, address data of different sub-pixels using the same gray-scale value display content are transmitted along with the gray-scale value, different gray-scale values correspond to different address codes to form different sets of display data, and the complete display data stream of a row of pixels should include all the gray-scale values of the row and address data of corresponding different sub-pixels.
Step 103: and sending the display data stream to a display driving chip.
In this embodiment, as shown in fig. 3, the display data stream may BE sent to the display driver chip in a VSC (video stream configuration, display data stream configuration) stage, where BS (blank start) indicates that a data packet starts, and BE (blank end) indicates that a data packet ends. In the related art, some invalid data is transmitted in the VSC stage, and the embodiment uses the VSC stage to transmit the display data stream, so that the VSC stage can be effectively used to transmit as much valid data as possible in the VSC stage, and the transmission efficiency of the display data is improved.
In this embodiment, the graphics processor sends the display data stream with the structure shown in fig. 3 to the display driving chip, and when the sub-pixels include the first color sub-pixel, the second color sub-pixel and the third color sub-pixel, the first portion of data, the second portion of data and the third portion of data are sequentially transmitted to the display driving chip, that is, after all the display data of the first color sub-pixel are transmitted, the display data of the second color sub-pixel are transmitted, and after all the display data of the second color sub-pixel are transmitted, the display data of the third color sub-pixel are transmitted.
In this embodiment, the display data stream is divided into multiple sets of display data, each set of display data includes a gray scale value and address data for displaying at least one subpixel of the gray scale value, and different sets of display data include different gray scale values, so that the same gray scale value only needs to be transmitted once, the same gray scale value is prevented from being transmitted repeatedly, the transmission efficiency of the display data can be improved, and it is possible to transmit display data with higher resolution without improving the transmission bandwidth.
The embodiment of the disclosure also provides a transmission processing method of display data, which is applied to a display driving chip, as shown in fig. 4, and includes:
step 201: receiving a display data stream of a graphic processor, wherein the display data stream comprises a plurality of groups of display data, each group of display data comprises a gray scale value and address data of at least one subpixel for displaying the gray scale value, and the gray scale values included in different groups of display data are different;
the display data stream transmitted by the graphic processor each time can comprise display data of one row of sub-pixels and can also comprise display data of a plurality of rows of sub-pixels; the display data stream transmitted each time may include display data of a portion of the gray scale values of at least one row of the sub-pixels, and of course, in order to improve the transmission efficiency, the display data stream transmitted each time may also include display data of all the gray scale values of at least one row of the sub-pixels.
In some embodiments, when the at least one row of subpixels includes a first color subpixel, a second color subpixel, and a third color subpixel, the first color, the second color, and the third color are different from each other, display data of the different color subpixels need to be separated in a display data stream, the display data stream including:
the first part data comprises display data of at least one group of first color sub-pixels, and the display data of each group of first color sub-pixels comprises a gray scale value and address data of at least one first color sub-pixel for displaying the gray scale value;
the second part of data comprises display data of at least one group of second color sub-pixels, and the display data of each group of second color sub-pixels comprises a gray scale value and address data of at least one second color sub-pixel for displaying the gray scale value;
and the third part of data comprises display data of at least one group of third-color sub-pixels, and the display data of each group of third-color sub-pixels comprises a gray scale value and address data of at least one third-color sub-pixel for displaying the gray scale value.
In a specific example, taking a display panel including red subpixel, green subpixel and blue subpixel as an example, as shown in fig. 3, the received display data stream includes address data of red gray scale value 1 and red subpixel 0-red subpixel m, address data of red gray scale value 2 and red subpixel n-red subpixel p, address data of …, address data of green gray scale value 1 and green subpixel 0-green subpixel m, address data of green gray scale value 2 and green subpixel n-green subpixel p, address data of …, blue gray scale value 1 and blue subpixel 0-blue subpixel m, and address data of blue gray scale value 2 and blue subpixel n-blue subpixel p.
The address data of the sub-pixel is used for indicating the sub-pixel which is the sub-pixel in a row of pixels. As shown in fig. 3, the display data of the sub-pixels of different colors may be spaced by using the fill data FS, which indicates the start of the fill data, and FE, which indicates the end of the fill data.
In the display data stream of this embodiment, address data of different sub-pixels using the same gray-scale value display content are transmitted along with the gray-scale value, different gray-scale values correspond to different address codes to form different sets of display data, and the complete display data stream of a row of pixels should include all the gray-scale values of the row and address data of corresponding different sub-pixels.
In this embodiment, as shown in fig. 3, the display data stream sent by the graphics processor may BE received in the VSC stage, where BS indicates the start of the data packet and BE indicates the end of the data packet. In the related art, some invalid data is transmitted in the VSC stage, and the embodiment uses the VSC stage to transmit the display data stream, so that the VSC stage can be effectively used to transmit as much valid data as possible in the VSC stage, and the transmission efficiency of the display data is improved.
In this embodiment, when the sub-pixel includes a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel, the display driver chip receives the first portion of data, the second portion of data, and the third portion of data sequentially transmitted by the graphics processor.
Step 202: decoding the display data stream to obtain a gray scale value corresponding to the sub-pixel;
and the display driving chip decodes the display data stream after receiving the display data stream. Comprising the following steps: decoding address data in the display data stream to obtain an address of at least one sub-pixel corresponding to each gray scale value; and obtaining the gray scale value corresponding to each sub-pixel according to the address of at least one sub-pixel corresponding to each gray scale value.
For example, the received display data stream includes address data of red gray scale value 1 and red sub-pixel 0-red sub-pixel m, address data of red gray scale value 2 and red sub-pixel n-red sub-pixel p, address data of green gray scale value 1 and green sub-pixel 0-green sub-pixel m, address data of green gray scale value 2 and green sub-pixel n-green sub-pixel p, address data of …, blue gray scale value 1 and blue sub-pixel 0-blue sub-pixel m, address data of blue gray scale value 2 and blue sub-pixel n-blue sub-pixel p. After decoding, it can be obtained: red subpixel 0-red subpixel m corresponds to red gray scale value 1, red subpixel n-red subpixel p corresponds to red gray scale values 2, …, green subpixel 0-green subpixel m corresponds to green gray scale value 1, green subpixel n-green subpixel p corresponds to green gray scale value 2, …, blue subpixel 0-blue subpixel m corresponds to blue gray scale value 1, and blue subpixel n-blue subpixel p corresponds to blue gray scale value 2.
The decoding operation described above may be implemented by Tcon (timing controller) integrated in the display driving chip.
Step 203: and driving the sub-pixels to display according to the gray scale values corresponding to the sub-pixels.
After the gray scale value corresponding to the sub-pixel is obtained, the gray scale voltage required by each sub-pixel can be transmitted to the line buffer circuit of the display driving chip, all the display gray scale signals of at least one line of sub-pixels are stored by the line buffer circuit of the display driving chip according to different sub-pixel positions, and after the signals are stored completely and verified, as shown in fig. 5, the output electric signals drive each pixel circuit of the display panel to obtain the display effect.
In this embodiment, the display data stream is divided into multiple sets of display data, each set of display data includes a gray scale value and address data for displaying at least one subpixel of the gray scale value, and different sets of display data include different gray scale values, so that the same gray scale value only needs to be transmitted once, the same gray scale value is prevented from being transmitted repeatedly, the transmission efficiency of the display data can be improved, and it is possible to transmit display data with higher resolution without improving the transmission bandwidth.
The embodiment of the disclosure also provides a transmission processing device of display data, which is applied to a graphics processor, as shown in fig. 6, and includes:
an acquisition module 11 for acquiring a display signal;
in this embodiment, the graphics processor receives a display signal transmitted by the graphics card, where the display signal is generated according to display content to be refreshed by the display panel.
A generating module 12, configured to generate a display data stream of at least one row of sub-pixels according to the display signal, where the display data stream includes multiple sets of display data, each set of display data includes a gray-scale value and address data of at least one sub-pixel that displays the gray-scale value, and different sets of display data include different gray-scale values;
before transmitting the display data to the display driving chip, the graphic processor counts the gray scale values of at least one row of sub-pixels, determines the gray scale values appearing in the display data of at least one row of sub-pixels, determines the sub-pixels corresponding to each gray scale value, and encodes the addresses of one or more sub-pixels corresponding to each gray scale value. For example, when the gray level value 1 corresponds to the subpixel R1, the address of the subpixel R1 is encoded to obtain the address data P 1，x The method comprises the steps of carrying out a first treatment on the surface of the The gray level value 2 corresponds to the sub-pixels R2 and R3, and then the addresses of the sub-pixels R2 and R3 are encoded to obtain address data P 2，x 。
After generating the display data stream of at least one row of subpixels, the graphics processor may sequentially transmit the display data of each row of subpixels to the display driver chip in a row order. The display data stream transmitted by the graphic processor each time can comprise display data of one row of sub-pixels and can also comprise display data of a plurality of rows of sub-pixels; the display data stream transmitted each time may include display data of a portion of the gray scale values of at least one row of the sub-pixels, and of course, in order to improve the transmission efficiency, the display data stream transmitted each time may also include display data of all the gray scale values of at least one row of the sub-pixels.
And the sending module 13 is used for sending the display data stream to a display driving chip.
In this embodiment, as shown in fig. 3, the display data stream may BE sent to the display driver chip in the VSC stage, where BS indicates that the data packet starts and BE indicates that the data packet ends. In the related art, some invalid data is transmitted in the VSC stage, and the embodiment uses the VSC stage to transmit the display data stream, so that the VSC stage can be effectively used to transmit as much valid data as possible in the VSC stage, and the transmission efficiency of the display data is improved.
In this embodiment, the display data stream is divided into multiple sets of display data, each set of display data includes a gray scale value and address data for displaying at least one subpixel of the gray scale value, and different sets of display data include different gray scale values, so that the same gray scale value only needs to be transmitted once, the same gray scale value is prevented from being transmitted repeatedly, the transmission efficiency of the display data can be improved, and it is possible to transmit display data with higher resolution without improving the transmission bandwidth.
In some embodiments, the at least one row of subpixels includes a first color subpixel, a second color subpixel, and a third color subpixel, the first color, the second color, and the third color being different, the display data stream including:
The first part data comprises display data of at least one group of first color sub-pixels, and the display data of each group of first color sub-pixels comprises a gray scale value and address data of at least one first color sub-pixel for displaying the gray scale value;
the second part of data comprises display data of at least one group of second color sub-pixels, and the display data of each group of second color sub-pixels comprises a gray scale value and address data of at least one second color sub-pixel for displaying the gray scale value;
and the third part of data comprises display data of at least one group of third-color sub-pixels, and the display data of each group of third-color sub-pixels comprises a gray scale value and address data of at least one third-color sub-pixel for displaying the gray scale value.
In some embodiments, the sending module 13 is specifically configured to sequentially transmit the first portion of data, the second portion of data, and the third portion of data to the display driver chip.
In this embodiment, the graphics processor sends the display data stream with the structure shown in fig. 3 to the display driving chip, and when the sub-pixels include the first color sub-pixel, the second color sub-pixel and the third color sub-pixel, the first portion of data, the second portion of data and the third portion of data are sequentially transmitted to the display driving chip, that is, after all the display data of the first color sub-pixel are transmitted, the display data of the second color sub-pixel are transmitted, and after all the display data of the second color sub-pixel are transmitted, the display data of the third color sub-pixel are transmitted.
The embodiment of the disclosure also provides a transmission processing device of display data, which is applied to a display driving chip, as shown in fig. 7, and includes:
a receiving module 21, configured to receive a display data stream of a graphics processor, where the display data stream includes multiple sets of display data, each set of display data includes a gray-scale value and address data of at least one subpixel for displaying the gray-scale value, and different sets of display data include different gray-scale values;
the display data stream transmitted by the graphic processor each time can comprise display data of one row of sub-pixels and can also comprise display data of a plurality of rows of sub-pixels; the display data stream transmitted each time may include display data of a portion of the gray scale values of at least one row of the sub-pixels, and of course, in order to improve the transmission efficiency, the display data stream transmitted each time may also include display data of all the gray scale values of at least one row of the sub-pixels.
In this embodiment, as shown in fig. 3, the display data stream sent by the graphics processor may BE received in the VSC stage, where BS indicates the start of the data packet and BE indicates the end of the data packet. In the related art, some invalid data is transmitted in the VSC stage, and the embodiment uses the VSC stage to transmit the display data stream, so that the VSC stage can be effectively used to transmit as much valid data as possible in the VSC stage, and the transmission efficiency of the display data is improved.
The decoding module 22 is configured to decode the display data stream to obtain a gray-scale value corresponding to a subpixel;
and the display driving chip decodes the display data stream after receiving the display data stream. Comprising the following steps: decoding address data in the display data stream to obtain an address of at least one sub-pixel corresponding to each gray scale value; and obtaining the gray scale value corresponding to each sub-pixel according to the address of at least one sub-pixel corresponding to each gray scale value.
The driving module 23 is configured to drive the sub-pixels to display according to the gray scale values corresponding to the sub-pixels.
After the gray scale value corresponding to the sub-pixel is obtained, the gray scale voltage required by each sub-pixel can be transmitted to the line buffer circuit of the display driving chip, all the display gray scale signals of at least one line of sub-pixels are stored by the line buffer circuit of the display driving chip according to different sub-pixel positions, and after the signals are stored completely and verified, as shown in fig. 5, the output electric signals drive each pixel circuit of the display panel to obtain the display effect.
In this embodiment, the display data stream is divided into multiple sets of display data, each set of display data includes a gray scale value and address data for displaying at least one subpixel of the gray scale value, and different sets of display data include different gray scale values, so that the same gray scale value only needs to be transmitted once, the same gray scale value is prevented from being transmitted repeatedly, the transmission efficiency of the display data can be improved, and it is possible to transmit display data with higher resolution without improving the transmission bandwidth.
In some embodiments, the at least one row of subpixels includes a first color subpixel, a second color subpixel, and a third color subpixel, the first color, the second color, and the third color being different, the display data stream including:
the first part data comprises display data of at least one group of first color sub-pixels, and the display data of each group of first color sub-pixels comprises a gray scale value and address data of at least one first color sub-pixel for displaying the gray scale value;
the second part of data comprises display data of at least one group of second color sub-pixels, and the display data of each group of second color sub-pixels comprises a gray scale value and address data of at least one second color sub-pixel for displaying the gray scale value;
and the third part of data comprises display data of at least one group of third-color sub-pixels, and the display data of each group of third-color sub-pixels comprises a gray scale value and address data of at least one third-color sub-pixel for displaying the gray scale value.
In some embodiments, the receiving a display data stream of a graphics processor includes:
The receiving module 21 is specifically configured to receive the first portion of data, the second portion of data, and the third portion of data that are sequentially transmitted by the graphics processor.
The embodiment of the disclosure also provides a transmission processing device for display data, which comprises: a memory and an actuator for executing instructions stored in the memory to implement steps in the transmission processing method of display data as described above.
The embodiment of the disclosure also provides a display device, including the transmission processing apparatus of display data, where the display device includes but is not limited to: the system comprises a radio frequency unit, a network module, an audio output unit, an input unit, a sensor, a display unit, a user input unit, an interface unit, a memory, a processor, a power supply and the like. It will be appreciated by those skilled in the art that the structure of the display device described above is not limiting of the display device, and that the display device may include more or less components described above, or may be combined with certain components, or may have different arrangements of components. In the disclosed embodiments, the display device includes, but is not limited to, a display, a cell phone, a tablet, a television, a wearable electronic device, a navigation display device, and the like.
The display device may be: any product or component with display function such as a liquid crystal television, a liquid crystal display, a digital photo frame, a mobile phone, a tablet personal computer and the like, wherein the display device further comprises a flexible circuit board, a printed circuit board and a backboard.
The embodiment of the present disclosure also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps in the transmission processing method of display data as described above.
In the method embodiments of the present disclosure, the serial numbers of the steps are not used to define the sequence of the steps, and it is within the scope of protection of the present disclosure for those of ordinary skill in the art to change the sequence of the steps without performing any creative effort.
Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices to be detected, or any other non-transmission medium which can be used to store information that can be accessed by a computing device to be detected. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
In the method embodiments of the present disclosure, the serial numbers of the steps are not used to define the sequence of the steps, and it is within the scope of protection of the present disclosure for those of ordinary skill in the art to change the sequence of the steps without performing any creative effort.
In this specification, all embodiments are described in a progressive manner, and identical and similar parts of the embodiments are all referred to each other, and each embodiment is mainly described in a different way from other embodiments. In particular, for the embodiments, since they are substantially similar to the product embodiments, the description is relatively simple, and the relevant points are found in the section of the product embodiments.
While the foregoing is directed to the preferred embodiments of the present disclosure, it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present disclosure and are intended to be comprehended within the scope of the present disclosure.
Claims (21)
1. A transmission processing method of display data, which is applied to a graphics processor, comprising:
acquiring a display signal;
generating a display data stream of at least one row of sub-pixels according to the display signal, wherein the display data stream comprises a plurality of groups of display data, each group of display data comprises a gray scale value and address data of at least one sub-pixel for displaying the gray scale value, and the gray scale values included in different groups of display data are different;
And sending the display data stream to a display driving chip.
2. The transmission processing method of display data according to claim 1, wherein the sending the display data stream to a display driving chip includes:
and in a display data stream configuration VSC stage, the display data stream is sent to the display driving chip.
3. The transmission processing method of display data according to claim 1, wherein the display data stream includes all gray scale values corresponding to the at least one row of sub-pixels.
4. The transmission processing method of display data according to claim 1, wherein the at least one row of subpixels includes a first color subpixel, a second color subpixel, and a third color subpixel, the first color, the second color, and the third color being different from each other, the display data stream comprising:
the first part data comprises display data of at least one group of first color sub-pixels, and the display data of each group of first color sub-pixels comprises a gray scale value and address data of at least one first color sub-pixel for displaying the gray scale value;
the second part of data comprises display data of at least one group of second color sub-pixels, and the display data of each group of second color sub-pixels comprises a gray scale value and address data of at least one second color sub-pixel for displaying the gray scale value;
And the third part of data comprises display data of at least one group of third-color sub-pixels, and the display data of each group of third-color sub-pixels comprises a gray scale value and address data of at least one third-color sub-pixel for displaying the gray scale value.
5. The transmission processing method of display data according to claim 4, wherein the sending the display data stream to a display driving chip includes:
and sequentially transmitting the first part of data, the second part of data and the third part of data to the display driving chip.
6. A transmission processing method of display data is characterized by being applied to a display driving chip and comprising the following steps:
receiving a display data stream of a graphic processor, wherein the display data stream comprises a plurality of groups of display data, each group of display data comprises a gray scale value and address data of at least one subpixel for displaying the gray scale value, and the gray scale values included in different groups of display data are different;
decoding the display data stream to obtain a gray scale value corresponding to the sub-pixel;
and driving the sub-pixels to display according to the gray scale values corresponding to the sub-pixels.
7. The method for processing display data according to claim 6, wherein decoding the display data stream to obtain the gray scale value corresponding to the subpixel comprises:
Decoding address data in the display data stream to obtain an address of at least one sub-pixel corresponding to each gray scale value;
and obtaining the gray scale value corresponding to each sub-pixel according to the address of at least one sub-pixel corresponding to each gray scale value.
8. The transmission processing method of display data according to claim 6, wherein the display data stream includes all gray scale values corresponding to the at least one row of sub-pixels.
9. The transmission processing method of display data according to claim 6, wherein the at least one row of subpixels includes a first color subpixel, a second color subpixel, and a third color subpixel, the first color, the second color, and the third color being different from each other, the display data stream comprising:
the first part data comprises display data of at least one group of first color sub-pixels, and the display data of each group of first color sub-pixels comprises a gray scale value and address data of at least one first color sub-pixel for displaying the gray scale value;
the second part of data comprises display data of at least one group of second color sub-pixels, and the display data of each group of second color sub-pixels comprises a gray scale value and address data of at least one second color sub-pixel for displaying the gray scale value;
And the third part of data comprises display data of at least one group of third-color sub-pixels, and the display data of each group of third-color sub-pixels comprises a gray scale value and address data of at least one third-color sub-pixel for displaying the gray scale value.
10. The transmission processing method of display data according to claim 9, wherein the receiving the display data stream of the graphic processor includes:
and receiving the first part of data, the second part of data and the third part of data which are sequentially transmitted by the graphic processor.
11. A transmission processing apparatus for display data, which is applied to a graphic processor, comprising:
the acquisition module is used for acquiring the display signals;
the generating module is used for generating a display data stream of at least one row of sub-pixels according to the display signal, wherein the display data stream comprises a plurality of groups of display data, each group of display data comprises a gray scale value and address data of at least one sub-pixel for displaying the gray scale value, and the gray scale values included in different groups of display data are different;
and the sending module is used for sending the display data stream to a display driving chip.
12. The transmission processing device of display data according to claim 11, wherein the transmitting module is specifically configured to transmit the display data stream to the display driver chip in a display data stream configuration VSC stage.
13. The apparatus according to claim 11, wherein the display data stream includes all gray scale values corresponding to the at least one row of sub-pixels.
14. The transmission processing apparatus of display data according to claim 11, wherein the at least one row of subpixels includes a first color subpixel, a second color subpixel, and a third color subpixel, the first color, the second color, and the third color being different from each other, the display data stream comprising:
the first part data comprises display data of at least one group of first color sub-pixels, and the display data of each group of first color sub-pixels comprises a gray scale value and address data of at least one first color sub-pixel for displaying the gray scale value;
the second part of data comprises display data of at least one group of second color sub-pixels, and the display data of each group of second color sub-pixels comprises a gray scale value and address data of at least one second color sub-pixel for displaying the gray scale value;
and the third part of data comprises display data of at least one group of third-color sub-pixels, and the display data of each group of third-color sub-pixels comprises a gray scale value and address data of at least one third-color sub-pixel for displaying the gray scale value.
15. The device according to claim 14, wherein the sending module is specifically configured to sequentially send the first portion of data, the second portion of data, and the third portion of data to the display driver chip.
16. A transmission processing device for display data, which is applied to a display driving chip, comprising:
the display data stream comprises a plurality of groups of display data, each group of display data comprises a gray scale value and address data of at least one subpixel for displaying the gray scale value, and the gray scale values included in different groups of display data are different;
the decoding module is used for decoding the display data stream to obtain a gray scale value corresponding to the sub-pixel;
and the driving module is used for driving the sub-pixels to display according to the gray scale values corresponding to the sub-pixels.
17. The transmission processing apparatus for display data according to claim 16, wherein,
the decoding module is specifically configured to decode address data in the display data stream to obtain an address of at least one subpixel corresponding to each gray scale value; and obtaining the gray scale value corresponding to each sub-pixel according to the address of at least one sub-pixel corresponding to each gray scale value.
18. The apparatus according to claim 16, wherein the display data stream includes all gray scale values corresponding to the at least one row of sub-pixels.
19. The transmission processing apparatus of display data according to claim 16, wherein the at least one row of subpixels includes a first color subpixel, a second color subpixel, and a third color subpixel, the first color, the second color, and the third color being different from each other, the display data stream comprising:
the first part data comprises display data of at least one group of first color sub-pixels, and the display data of each group of first color sub-pixels comprises a gray scale value and address data of at least one first color sub-pixel for displaying the gray scale value;
the second part of data comprises display data of at least one group of second color sub-pixels, and the display data of each group of second color sub-pixels comprises a gray scale value and address data of at least one second color sub-pixel for displaying the gray scale value;
and the third part of data comprises display data of at least one group of third-color sub-pixels, and the display data of each group of third-color sub-pixels comprises a gray scale value and address data of at least one third-color sub-pixel for displaying the gray scale value.
20. The transmission processing apparatus of display data according to claim 19, wherein the receiving the display data stream of the graphic processor comprises:
the receiving module is specifically configured to receive the first portion of data, the second portion of data, and the third portion of data that are sequentially transmitted by the graphics processor.
21. A transmission processing apparatus for display data, comprising: a memory and an actuator for executing instructions stored in the memory to implement steps in the transmission processing method of display data according to any one of claims 1 to 5 or to implement steps in the transmission processing method of display data according to any one of claims 6 to 10.
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