CN109164998B - Data transmission method and display driving system thereof - Google Patents
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Abstract
A data transmission method is applied to a display, and the display comprises a display panel. The data transmission method comprises the following steps: providing a main controller and n display drivers, wherein n is a natural number more than 1; providing a Mobile Industry Processor Interface (MIPI) communication link to connect the main controller and the n display drivers; determining n virtual channel values Vc1-Vcn corresponding to the n display drivers respectively; providing a control command having a Virtual Channel (MIPI) parameter via the MIPI communication link using the host controller; when the virtual channel parameter corresponds to the ith virtual channel value Vci, the ith display driver responds to the control command to execute corresponding operation, and the rest n-1 display drivers abandon the control command, wherein i is a natural number less than or equal to n.
Description
The present application is a divisional application of an invention patent application having an application date of 2011, 08 and 24, and an application number of 201110243966.4, entitled "data transmission method and display driving system thereof".
Technical Field
The present invention relates to a data transmission method and a display driving system using the same, and more particularly, to a data transmission method applied to a Mobile Industry Processor Interface (MIPI) communication link and a display driving system using the same.
Background
In the modern age with the increasing popularity of technology, medium and small sized displays have been widely used in various electronic products, such as mobile phones, Digital Personal assistants (PDAs), multimedia players, satellite navigation devices, and the like. In general, a single display driver is used for a small-and-medium-sized display to perform operations of scan driving and data driving on a display panel.
However, the conventional solution using a single display driver is limited in size of the integrated circuit, so that a large number of data driving channels cannot be configured, and thus the conventional solution has a disadvantage of being unable to support a display panel with a higher resolution. Accordingly, how to effectively design a display driving system capable of supporting a higher number of data driving channels and correspondingly supporting a higher resolution display panel is one of the trends in the industry.
Disclosure of Invention
The invention relates to a data transmission method and a display driving system using the same, wherein a plurality of display drivers are used for driving a display panel, and each display driver is correspondingly provided with a Virtual Channel (Virtual Channel) value. The data transmission method and the display driving system using the same also provide a Mobile Industry Processor Interface (MIPI) instruction with an addressing function of virtual channel parameters through the main controller so as to address and drive each display driver. Accordingly, compared to the conventional display driving solution of a single display driver, the data transmission method and the display driving system using the same according to the present invention have the advantages of supporting a higher number of data driving channels and correspondingly supporting a higher resolution display panel.
The invention provides a data transmission method, which is used in a display, the display comprises a display panel and a display driving system, the display driving system comprises a main controller and n display drivers, the n display drivers drive the display panel, the display panel comprises a plurality of panel areas, the n display drivers respectively correspond to the panel areas to drive the panel areas, n is a natural number larger than 1, the data transmission method comprises the following steps: providing a communication link of a mobile industry processor interface, connecting the main controller and the n display drivers in parallel, wherein the n display drivers correspond to n virtual channel values Vc1, Vc 2. Applying the main controller to provide a control command through the communication link of the mobile industry processor interface, wherein the control command has a virtual channel parameter; when the virtual channel parameter in the control command corresponds to a broadcast virtual channel value, the n display drivers execute corresponding operations in response to the control command; when the virtual channel parameter in the control command corresponds to an ith virtual channel value Vci in n virtual channel values, an ith display driver in the n display drivers executes corresponding operation in response to the control command, wherein i is a natural number less than or equal to n; and when the virtual channel parameter in the control command corresponds to the ith virtual channel value Vci, discarding the control command correspondingly by the rest n-1 display drivers in the n display drivers.
The invention provides a data transmission method, which is applied to a display, wherein the display comprises a display panel. The data transmission method comprises the following steps: providing a main controller and n display drivers, wherein n is a natural number more than 1; providing a Mobile Industry Processor Interface (MIPI) communication link for connecting the main controller and the n display drivers; determining n virtual channel values Vc1-Vcn corresponding to the n display drivers respectively; providing a control command having a Virtual Channel (MIPI) parameter via the MIPI communication link using the host controller; when the virtual channel parameter corresponds to the ith virtual channel value Vci, the ith display driver responds to the control command to execute corresponding operation, and the rest n-1 display drivers abandon the control command, wherein i is a natural number less than or equal to n.
The invention provides a display driving system, which is applied to a display, wherein the display comprises a display panel. The display driving system includes a main controller and n display drivers, where n is a natural number greater than 1. The host controller provides control commands with virtual channel parameters via the MIPI communication link. The n display drivers correspond to the n virtual channel values Vc1-Vcn, respectively. When the virtual channel parameter corresponds to the ith virtual channel value Vci, the ith display driver responds to the control command to execute corresponding operation, and the rest n-1 display drivers abandon the control command, wherein i is a natural number less than or equal to n.
In order to better appreciate the above and other aspects of the present invention, a preferred embodiment will be described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a block diagram of a display device to which a display driving system according to an embodiment of the invention is applied.
Fig. 2 is a flowchart illustrating the operation of the display driving system according to the embodiment when the control command cmd is a data transmission request command.
FIG. 3 is a flowchart illustrating the operation of the display driving system according to the embodiment when the control command cmd is the tearing event command.
FIG. 4 is a flowchart illustrating the operation of the display driving system according to the embodiment when the control command cmd is the RAM address setting command and the data writing command.
Fig. 5 is a flowchart illustrating the operation of the display driving system of the present embodiment when the main controller 100 is in the system idle state.
FIG. 6 is a flow chart of a data transmission method according to an embodiment of the invention.
[ description of the reference numerals of the main elements ]
1: display device
10: display driving system
100: main controller
110_1-110_ n: display driver
20: display panel
A1-An: panel partition
Detailed Description
The display driving system of the embodiment of the invention drives the display panel by applying a plurality of display drivers, wherein each display driver is correspondingly configured with a Virtual Channel (Virtual Channel) value for addressing.
Referring to fig. 1, a block diagram of a display to which a display driving system according to an embodiment of the invention is applied is shown. The display 1 includes a display driving system 10 and a display panel 20, wherein the display panel 20 includes n panel partitions a1, a2, … and An, where n is a natural number greater than 1. For example, each of the n panel partitions A1-An corresponds to substantially the same area and resolution. For the example where n is equal to 3 and the display panel 20 has a resolution of 1920 × 1080, each of the n panel partitions a1-A3 correspondingly has a resolution of 640 × 1080.
The display driving system 10 includes a main controller 100 and n display drivers 110_1, 110_2, …, 110_ n. The host controller 100 provides a control command cmd having a Virtual Channel (Virtual Channel) parameter via a Mobile Industry Processor Interface (MIPI) communication link 120. For example, the control instruction cmd is a control instruction defined in a Display Command Set (DSC), such as a Data Transmission (Data Transmission) request instruction, a read request instruction, a Tearing Effect (Tearing Effect) event instruction, a random access memory address setting instruction, or a Data write instruction.
The n display drivers 110_1-110_ n determine n virtual channel values Vc1, Vc2, …, Vcn, respectively. For example, n is equal to 3, and the virtual channel values Vc1-Vc3 correspond to values 1, 2, and 3, respectively.
When the virtual channel parameter in the control command cmd corresponds to the virtual channel value Vci in the virtual channel values Vc1-Vcn, the corresponding display driver 110_ i performs the corresponding operation in response to the control command cmd, and the remaining n-1 display drivers discard the control command cmd correspondingly, where i is a natural number less than or equal to n. Accordingly, the display driving system 10 of the present embodiment can address the control command cmd provided through the MIPI communication link 120 through the virtual channel parameter, and accordingly drive the corresponding n display drivers 110_1 to 110 — n.
Next, a plurality of control command operation examples are listed to further describe the operations performed by the display driving system 10 according to different control commands cmd in the present embodiment.
Data transmission request command and read request command
In one example of operation, the control command cmd is a Data transfer (Data Transmission) request command or a read request command. In this way, the display driver 110_ i responds to the data transmission request command and returns a reply acknowledgement signal to notify the main controller 100 whether the data transmission operation corresponding to the data transmission request command is completed. For example, the operation of the main controller 100 providing the data transmission request command and the display driver 110_ i correspondingly returning the reply acknowledgement signal can be as shown in the flowchart of fig. 2.
Further, the process of fig. 2 first follows the process (a1), and the main controller 100 provides a data transmission request command, wherein the virtual channel parameter corresponds to the virtual channel value Vci. Then, as shown in the process (b1), the main controller 100 and the display driver 110_ i enter a Bus turn (Bus turn) period, in which the main controller 100 gives the main control right of the MIPI communication link 120 to the display driver 110_ i. Then, as indicated by the flow (c1), the display driver 110_ i returns a reply acknowledgement signal to the main controller 100 via the MIPI communication link 120, respectively. Thereafter, as shown in the process (d1), the host controller 100 and the display driver 110_ i enter the bus switching period again, in which the display driver 110_ i gives the host right of the MIPI communication link 120 to the host controller 100.
Tear effect event instruction
In yet another exemplary embodiment, the control command cmd is a tearing event command, wherein when the control command cmd is the tearing event command, the virtual channel parameter in the control command cmd corresponds to the virtual channel value Vc1 of the n virtual channel values Vc1-Vcn, and accordingly, the display driving system 10 of the present embodiment can perform the recovery related to the tearing event through the 1 st display driver 110_ 1.
The display driver 110_1 responds to the tearing event command by transmitting a reply acknowledgement signal to indicate whether the main controller 100 can provide the display data corresponding to the next frame. For example, the operation of the main controller 100 providing the tearing event command and the display driver 110_1 correspondingly returning the reply acknowledgement signal can be as shown in the flowchart of FIG. 3.
Further, the process flow of fig. 3 first goes to the process flow (a3), the main controller 100 provides a tearing event command, wherein the virtual channel parameter corresponds to the virtual channel value Vc 1. Then, as shown in the process (b3), the host controller 100 and the display driver 110_1 enter a bus switching period, in which the host controller 100 gives the display driver 110_1 the master right of the MIPI communication link 120. Then, as shown in the process (c3), the display driver 110_1 correspondingly returns an acknowledgement signal ACK or an error report signal to the main controller 100 via the MIPI communication link 120. Then, as shown in the process (d3), the host controller 100 and the display driver 110_1 enter the bus switching period again, in which the display driver 110_1 gives the host right of the MIPl communication link 120 to the host controller 100.
Then, as shown in processes (e3), (f3), (g3) and (h3), processes (e3), (f3) and (h3) are similar to the processes (a3), (b3) and (d3), respectively, to pass the master rights of the MIPI communication link 120 to the display driver 110_1 during bus exchange and to pass the master rights of the MIPI communication link 120 to the host controller 100 again through the operation of the host controller 100; in the process (g3), the display driver 110_1 generates and returns a reply acknowledge signal corresponding to the tearing event to the main controller 100.
Random access memory address setting instruction and data writing instruction
In yet another example of operation, the control instruction cmd is a random access memory address set instruction and a data write instruction. For example, each of the n display drivers 110_1-110_ n includes a random access memory (not shown), and the display driver 110_ i correspondingly sets a data storage space of the random access memory in response to a random access memory address setting instruction, and correspondingly writes data into the data storage space of the random access memory in response to a data writing instruction. For example, the main controller 100 and the display driver 110_ i perform the above-mentioned on-demand memory address setting operation in the MIPI command Mode (command Mode), thereby performing the transmission of the display data.
For example, the follower memory address setting instructions are, for example, 0x2A and 0x2B instructions defined in DSC, while the data write instructions are, for example, 0x2C and 0x3C instructions defined in DSC. The operation of the host controller 100 to provide the ram address set command and the data write command can be as shown in the flowchart of fig. 4.
First, as shown in the flow (a4), the main controller 100 provides the ram address setting commands DSC 0x2A and 0x2B to define the used segment of the ram in the display driver 110_ i, wherein DSC 0x2A and 0x2B are used to define the start address and the end address of the used segment of the ram, respectively. Then, as shown in the process (b4), the main controller 100 provides a data write command DSC 0x2C to write the display data of the first Row (Row) into the corresponding first Row storage space in the aforementioned use section of the random access memory. Then, as shown in the process (c4), the main controller 100 provides a data writing command DSC 0x3C to write the display data of each subsequent column into the corresponding remaining storage space in the previous used section of the random access memory. Thereafter, as shown in the flow (d4), the main controller 100 and the display driver 110_ i enter the bus swap period again.
System idle state
In an operation example, the main controller 100 of the embodiment is in a system idle state, for example, an operation state in which no instruction is provided after the display 1 is turned on. In this situation, the display driver 110_ i correspondingly returns a reply confirmation signal, wherein the value of i is, for example, the initial setting value of the system. The main controller 100 can correspondingly determine whether the MIPI communication link 120 between the display driver 110_ i and the main controller 100 is operating normally through a reply confirmation signal returned by the display driver 110_ i. For example, the operation of the display driver 110_ i for returning the reply acknowledgement signal in the system idle state can be as shown in the flowchart of fig. 5, wherein the operation flows (a2) - (d2) are similar to the operation flows (a1) - (d1) shown in fig. 2, and are not repeated herein.
In the embodiment, although the case where the virtual channel parameters in the control command cmd can selectively correspond to the virtual channel values Vc1-Vcn is only taken as an example for description, the control command cmd of the embodiment is not limited thereto. In other examples, the virtual channel parameter in the control command cmd may correspond to other values, thereby controlling the display drivers 110_1-110_ n to perform different operations. For example, each of the n display drivers 110_1-110_ n is preset with a broadcast virtual channel value Vcb, and the virtual channel parameter in the control command cmd may also correspond to the broadcast virtual channel value Vcb to perform a broadcast operation on all the display drivers 110_1-110_ n.
For example, when the virtual channel parameter in the control command cmd corresponds to the broadcast virtual channel value Vcb, the n display drivers 110_1-110_ n are enabled to perform corresponding operations in response to the control command cmd, thereby implementing the operation of broadcasting to each of the n display drivers 110_1-110_ n by the main controller 100.
Referring to fig. 6, a flow chart of a data transmission method according to an embodiment of the invention is shown. For example, the data transmission method of the present embodiment includes the following steps. First, as shown in step (A), the main controller 100 and n display drivers 110_1-110_ n are provided. Next, in step (B), a MIPI communication link 120 is provided connecting the main controller 100 and the n display drivers 110_1-110_ n. Then, in step (C), n virtual channel values Vc1-Vcn are determined corresponding to the n display drivers 110_1-110_ n, respectively. Next, as shown in step (D), the host controller 100 provides the control command cmd with the virtual channel parameters via the MIPI communication link 120. Then, as shown in step (E), when the virtual channel parameter in the control command cmd corresponds to the virtual channel value Vci, the display driver 110_ i performs a corresponding operation in response to the control command cmd, and the remaining n-1 display drivers discard the control command cmd correspondingly.
The data transmission method and the display driving system of the embodiment of the invention drive the display panel by applying a plurality of display drivers, wherein each display driver is correspondingly provided with a virtual channel numerical value. The data transmission method and the display driving system of the embodiment of the invention also provide the MIPI instruction with the addressing function of the virtual channel parameters through the main controller so as to address and drive each display driver. Accordingly, compared to the conventional display driving solution of a single display driver, the data transmission method and the display driving system using the same according to the embodiments of the present invention have the advantages of supporting a higher number of data driving channels and correspondingly supporting a higher resolution display panel.
While the invention has been described with reference to the preferred embodiments, it is to be understood that the invention is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the scope of the appended claims.
Claims (26)
1. A data transmission method is used in a display, the display comprises a display panel and a display driving system, the display driving system comprises a main controller and n display drivers, the n display drivers drive the display panel, the display panel comprises a plurality of panel areas, the n display drivers respectively correspond to the panel areas to drive the panel areas, n is a natural number larger than 1, the data transmission method comprises the following steps:
providing a communication link of a mobile industry processor interface, connecting the main controller and the n display drivers in parallel, wherein the n display drivers correspond to n virtual channel values Vc1, Vc 2.
Applying the main controller to provide a control command through the communication link of the mobile industry processor interface, wherein the control command has a virtual channel parameter;
when the virtual channel parameter in the control command corresponds to a broadcast virtual channel value, the n display drivers execute corresponding operations in response to the control command;
when the virtual channel parameter in the control command corresponds to an ith virtual channel value Vci in n virtual channel values, an ith display driver in the n display drivers executes corresponding operation in response to the control command, wherein i is a natural number less than or equal to n; and
when the virtual channel parameter in the control command corresponds to the ith virtual channel value Vci, the rest n-1 display drivers in the n display drivers correspondingly abandon the control command.
2. The data transmission method according to claim 1,
after the main controller provides the control command, the main controller gives the main control right of the mobile industry processor interface communication connection to the ith display driver in a first bus exchange period, and the ith display driver returns the main control right of the mobile industry processor interface communication connection to the main controller in a second bus exchange period after the first bus exchange period.
3. The data transmission method according to claim 1, wherein the control command is a data transmission request command, and the ith display driver correspondingly returns a reply confirmation signal to notify the host controller whether a data transmission operation corresponding to the data transmission request command is completed.
4. The data transmission method according to claim 1, wherein the control command is a read request command, and the ith display driver correspondingly returns a reply confirmation signal in response to the read request command to notify the host controller whether a data transmission operation corresponding to the read request command is completed.
5. The method according to claim 1, wherein the ith display driver correspondingly returns a reply acknowledgement signal when the host controller is in a system idle state.
6. The data transmission method according to claim 1, wherein the control command is a tearing event command, and the ith display driver correspondingly returns a reply acknowledgement signal to indicate whether the host controller can provide display data corresponding to a next frame in response to the tearing event command.
7. The data transmission method according to claim 6, wherein the virtual channel parameter in the control command is a virtual channel value corresponding to a specific display driver when the control command is the tearing event command.
8. The data transmission method according to claim 1, wherein the control command is an on-demand memory address setting command, the ith display driver includes an on-demand memory, and the ith display driver is responsive to the on-demand memory address setting command to correspondingly set a data storage space of the on-demand memory.
9. The data transmission method according to claim 8, wherein the control command is a data write command, and the i-th display driver writes a transmission data provided by the main controller into the data storage space in response to the data write command.
10. The data transmission method according to claim 1, wherein the control command is a control command defined in a display command set.
11. A data transmission method is used in a display, the display comprises a display panel and a display driving system, the display driving system comprises a main controller and n display drivers, the n display drivers drive the display panel, the display panel comprises a plurality of panel areas, the n display drivers respectively correspond to the panel areas to drive the panel areas, n is a natural number larger than 1, the data transmission method comprises the following steps:
providing a communication link of a mobile industry processor interface, connecting the main controller and the n display drivers in parallel, wherein the n display drivers correspond to n virtual channel values Vc1, Vc 2.
Applying the main controller to provide a control command through the communication link of the mobile industry processor interface, wherein the control command has a virtual channel parameter;
when the virtual channel parameter in the control command corresponds to an ith virtual channel value Vci in n virtual channel values, an ith display driver in the n display drivers executes corresponding operation in response to the control command, wherein i is a natural number less than or equal to n; and
when the virtual channel parameter in the control command corresponds to the ith virtual channel value Vci, the rest n-1 display drivers in the n display drivers correspondingly abandon the control command;
the control command is a tearing event command, the virtual channel parameter in the control command is a virtual channel value corresponding to a specific display driver, and the specific display driver responds to the tearing event command and correspondingly returns a return confirmation signal to indicate whether the main controller can provide display data corresponding to a next frame.
12. A data transmission method is used in a display, the display comprises a display panel and a display driving system, the display driving system comprises a main controller and n display drivers, the n display drivers drive the display panel, the display panel comprises a plurality of panel areas, the n display drivers respectively correspond to the panel areas to drive the panel areas, n is a natural number larger than 1, the data transmission method comprises the following steps:
providing a communication link of a mobile industry processor interface, connecting the main controller and the n display drivers in parallel, wherein the n display drivers correspond to n virtual channel values Vc1, Vc 2.
Applying the main controller to provide a control command through the communication link of the mobile industry processor interface, wherein the control command has a virtual channel parameter;
when the virtual channel parameter in the control command corresponds to a broadcast virtual channel value, the n display drivers execute corresponding operations in response to the control command;
when the virtual channel parameter in the control command corresponds to an ith virtual channel value Vci in n virtual channel values, an ith display driver in the n display drivers executes corresponding operation in response to the control command, wherein i is a natural number less than or equal to n; and
when the virtual channel parameter in the control command corresponds to the ith virtual channel value Vci, the rest n-1 display drivers in the n display drivers correspondingly abandon the control command;
when the control command is a random access memory address setting command, the ith display driver comprises a random access memory, responds to the random access memory address setting command, correspondingly sets a data storage space of the random access memory, and responds to the data writing command when the control command is a data writing command, and correspondingly writes transmission data provided by the main controller into the data storage space.
13. The data transmission method according to claim 12, wherein the main controller sequentially performs the following steps:
providing a plurality of random access memory address setting instructions to define the use sections of random access memory in the plurality of display drivers;
providing a first data writing instruction to write the display data of a first row into a corresponding first row storage space in the use section of the random access memory; and
providing at least one second data writing instruction to write the display data of each subsequent row into the corresponding other storage space in the use section of the random access memory.
14. A display driving system is used in a display, the display includes a display panel and the display driving system, the display driving system includes:
a main controller, providing a control command through a mobile industry processor interface communication link, wherein the control command has a virtual channel parameter; and
n display drivers respectively corresponding to n virtual channel values Vc1, Vc2,. and Vcn, n is a natural number greater than 1, the n display drivers drive the display panel, the display panel comprises a plurality of panel areas, the n display drivers are respectively used for corresponding to the panel areas so as to drive the panel areas, and the n display drivers are connected in parallel to the main controller through the mobile industry processor interface communication connection;
when the virtual channel parameter in the control command corresponds to a broadcast virtual channel value, the n display drivers respond to the control command to execute corresponding operations;
when the virtual channel parameter in the control command corresponds to an ith virtual channel value Vci in the n virtual channel values, an ith display driver in the n display drivers executes corresponding operation in response to the control command, wherein i is a natural number less than or equal to n;
when the virtual channel parameter in the control command corresponds to the ith virtual channel value Vci, the remaining n-1 display drivers in the n display drivers correspondingly discard the control command.
15. The display driving system of claim 14, wherein the host controller transfers the ownership of the mobile industry processor interface communication link to the ith display driver during a first bus swap period after the host controller provides the control command, and the ith display driver returns the ownership of the mobile industry processor interface communication link to the host controller during a second bus swap period after the first bus swap period.
16. The display driving system according to claim 14, wherein the control command is a data transmission request command, and the ith display driver correspondingly returns a reply confirmation signal to notify the host controller whether a data transmission operation corresponding to the data transmission request command is completed.
17. The display driving system according to claim 14, wherein the control command is a read request command, and the ith display driver correspondingly returns a reply confirmation signal to notify the host controller whether a data transfer operation corresponding to the read request command is completed.
18. The display driving system according to claim 14, wherein the ith display driver correspondingly returns a recovery confirm signal when the host controller is in a system idle state.
19. The display driving system according to claim 14, wherein the control command is a tearing event command, and the ith display driver correspondingly returns a recovery confirmation signal to indicate whether the host controller can provide display data corresponding to a next frame in response to the tearing event command.
20. The display driving system according to claim 19, wherein the virtual channel parameter in the control command is a virtual channel value corresponding to a specific display driver when the control command is the tearing event command.
21. The display driving system according to claim 14, wherein the control command is an on-demand memory address setting command, the ith display driver comprises an on-demand memory, and the ith display driver is responsive to the on-demand memory address setting command to correspondingly set a data storage space of the on-demand memory.
22. The display driving system of claim 21, wherein the control command is a data writing command, and the i-th display driver writes a transmission data provided by the main controller into the data storage space in response to the data writing command.
23. The display driving system according to claim 14, wherein the control command is a control command defined in a display command set.
24. A display driving system is used in a display, the display includes a display panel and the display driving system, the display driving system includes:
a main controller, providing a control command through a mobile industry processor interface communication link, wherein the control command has a virtual channel parameter; and
n display drivers respectively corresponding to n virtual channel values Vc1, Vc2,. and Vcn, n is a natural number greater than 1, the n display drivers drive the display panel, the display panel comprises a plurality of panel areas, the n display drivers are respectively used for corresponding to the panel areas so as to drive the panel areas, and the n display drivers are connected in parallel to the main controller through the mobile industry processor interface communication connection;
when the virtual channel parameter in the control command corresponds to an ith virtual channel value Vci in the n virtual channel values, an ith display driver in the n display drivers executes corresponding operation in response to the control command, wherein i is a natural number less than or equal to n;
when the virtual channel parameter in the control command corresponds to the ith virtual channel value Vci, the rest n-1 display drivers in the n display drivers correspondingly abandon the control command;
the control command is a tearing event command, the virtual channel parameter in the control command is a virtual channel value corresponding to a specific display driver, and the specific display driver responds to the tearing event command and correspondingly returns a return confirmation signal to indicate whether the main controller can provide display data corresponding to a next frame.
25. A display driving system is used in a display, the display includes a display panel and the display driving system, the display driving system includes:
a main controller, which provides a control command through a mobile industry processor interface communication parallel connection, wherein the control command has a virtual channel parameter; and
n display drivers respectively corresponding to n virtual channel values Vc1, Vc2,. and Vcn, n is a natural number greater than 1, the n display drivers drive the display panel, the display panel comprises a plurality of panel areas, the n display drivers are respectively used for corresponding to the panel areas so as to drive the panel areas, and the n display drivers are connected in parallel to the main controller through the mobile industry processor interface communication connection;
when the virtual channel parameter in the control command corresponds to a broadcast virtual channel value, the n display drivers respond to the control command to execute corresponding operations;
when the virtual channel parameter in the control command corresponds to an ith virtual channel value Vci in the n virtual channel values, an ith display driver in the n display drivers executes corresponding operation in response to the control command, wherein i is a natural number less than or equal to n;
when the virtual channel parameter in the control command corresponds to the ith virtual channel value Vci, the rest n-1 display drivers in the n display drivers correspondingly abandon the control command;
when the control command is a random access memory address setting command, the ith display driver comprises a random access memory, responds to the random access memory address setting command, correspondingly sets a data storage space of the random access memory, and responds to the data writing command when the control command is a data writing command, and correspondingly writes transmission data provided by the main controller into the data storage space.
26. The display driving system according to claim 25, wherein the main controller sequentially performs the steps of:
providing a plurality of random access memory address setting instructions to define the use sections of random access memory in the plurality of display drivers;
providing a first data writing instruction to write the display data of a first row into a corresponding first row storage space in the use section of the random access memory; and
providing at least one second data writing instruction to write the display data of each subsequent row into the corresponding other storage space in the use section of the random access memory.
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| CN201810971259.9A CN109164998B (en) | 2011-08-24 | 2011-08-24 | Data transmission method and display driving system thereof |
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| CN2011102439664A CN102955679A (en) | 2011-08-24 | 2011-08-24 | Data transmission method and display driving system thereof |
| CN201810971259.9A CN109164998B (en) | 2011-08-24 | 2011-08-24 | Data transmission method and display driving system thereof |
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| CN108694898B (en) * | 2017-06-09 | 2022-03-29 | 京东方科技集团股份有限公司 | Drive control method, drive control assembly and display device |
| CN108694897B (en) * | 2017-06-09 | 2021-09-28 | 京东方科技集团股份有限公司 | Drive control method, drive control assembly and display device |
| CN110223643B (en) | 2018-03-01 | 2022-02-11 | 京东方科技集团股份有限公司 | Data transmission method, assembly and system and display device |
| CN110459180B (en) * | 2018-05-07 | 2022-04-22 | 京东方科技集团股份有限公司 | Drive control method and device and display device |
| CN109285499B (en) * | 2018-12-05 | 2022-02-08 | 京东方科技集团股份有限公司 | Integrated circuit, display device and compensation method |
| TWI780391B (en) * | 2019-12-31 | 2022-10-11 | 新唐科技股份有限公司 | Display system and method of automatically adjusting display-panel parameters |
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