CN108255448B - Controller of display device, processing method thereof, storage medium, and processor - Google Patents
Controller of display device, processing method thereof, storage medium, and processor Download PDFInfo
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- CN108255448B CN108255448B CN201711236313.7A CN201711236313A CN108255448B CN 108255448 B CN108255448 B CN 108255448B CN 201711236313 A CN201711236313 A CN 201711236313A CN 108255448 B CN108255448 B CN 108255448B
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1407—General aspects irrespective of display type, e.g. determination of decimal point position, display with fixed or driving decimal point, suppression of non-significant zeros
Abstract
The invention discloses a controller of a display device, a processing method thereof, a storage medium and a processor. Wherein, this controller includes: the first processing module is used for receiving the image output by the source end, storing the image of a preset type and outputting the stored image to the display device; the second processing module is used for receiving the image output by the source end, storing the image output by the source end, reducing or amplifying the stored image, and outputting the reduced or amplified image to the display device; the first storage module is used for storing images of preset types or images output by a source end; the first control module is used for controlling the first processing module to receive the image output by the source end when judging that the source end allows the image of the preset type to be output, and controlling the second processing module to receive the image output by the source end when judging that the source end does not allow the image of the preset type to be output. The invention solves the technical problems of single function and high cost of the controller of the display device in the prior art.
Description
Technical Field
The invention relates to the field of chips, in particular to a controller of a display device, a processing method of the controller, a storage medium and a processor.
Background
DP (Display interface, abbreviated as Display Port) is a standard of full high-definition digital Display interface, and can connect a computer device and a Display device, such as a Display screen, for a computer device such as a notebook, an eDP interface (embedded Display interface, abbreviated as embedded Display Port) is usually used to connect the Display screen inside the body.
The eDP interface is added with a PSR (Panel Self-Refresh, short for Panel Self Refresh) function, so that when the system displays a still image, the power consumption of the system can be reduced, and the battery life can be prolonged. In order to realize the PSR function, a storage module needs to be set in a TCON (Timing Controller, abbreviated as Timing Controller) of the display device, when displaying a still image, the image is stored in the storage module, at this time, the source end stops transmitting the image, and the influence on the transmission interface is cut off, at this time, the TCON automatically displays the image stored in the storage module.
In the DP interface, since the source resolution is not equal to the resolution of the display device, it is necessary to perform the Scaler function to convert all input signals of different resolutions into signals of the same resolution as the display device for display. In order to realize the functions, the image sent by the source end needs to be stored, then the image is processed by the brightness and chrominance control algorithm module and then sent to the Scaler module, and the stronger edge effect is processed by searching a proper interpolation direction or weight and changing the horizontal and vertical resolutions of the image through specific algorithm processing, so that the video content is suitable for the resolution of the display screen and can be normally displayed.
Because the controller with the PSR function can only be applied to the eDP to support and fix one display resolution and cannot be applied to products which can be externally connected to different source ends for sending different resolutions, and the controller with the scaler function does not have the PSR function, the product performance is reduced, and the power consumption is increased. Therefore, the controller in the prior art has single function, poor compatibility and no market competitiveness. In addition, in order to make the controller have the above two functions, the controller can be implemented by increasing the capacity or the number of the memories, which results in a great increase in the cost of the controller and is not favorable for the price competitiveness of the mass production market.
Aiming at the problems of single function and high cost of a controller of a display device in the prior art, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a controller of a display device, a processing method thereof, a storage medium and a processor, which are used for at least solving the technical problems of single function and high cost of the controller of the display device in the prior art.
According to an aspect of an embodiment of the present invention, there is provided a controller of a display device, the controller being connected between the display device and a source terminal, the controller including: the first processing module is connected with the source end and the display device and used for receiving the image output by the source end, storing the image of the preset type and outputting the stored image to the display device, wherein the source end stops outputting the image of the preset type after outputting the image of the preset type; the second processing module is connected with the source end and the display device and used for receiving the image output by the source end, storing the image output by the source end, reducing or amplifying the stored image and outputting the reduced or amplified image to the display device; the first storage module is connected with the first processing module and the second processing module and used for storing images of preset types or images output by the source end; the first control module is connected with the first processing module and the second processing module and used for judging whether the source end allows the output of the image of the preset type, if the source end is judged to allow the output of the image of the preset type, the first processing module is controlled to receive the image output by the source end, and if the source end is judged not to allow the output of the image of the preset type, the second processing module is controlled to receive the image output by the source end.
Further, the controller further comprises: the second storage module is used for storing the value of the first preset bit, wherein the value of the first preset bit is used for representing whether the source end allows the output of the preset type of image; and the first control module is connected with the second storage module and used for determining that the source end allows the output of the image of the preset type when the value of the first preset bit is judged to be the first preset value, and determining that the source end does not allow the output of the image of the preset type when the value of the first preset bit is judged to be the second preset value.
Further, the controller further comprises: the third storage module is used for storing a value of a second preset bit, wherein the value of the second preset bit is used for representing whether the display device allows to receive the preset type of image; and the first interface is connected with the third storage module and the second storage module and is used for transmitting the value of the second preset bit to the source end and receiving the value of the first preset bit output by the source end, wherein the source end generates the value of the first preset bit according to the value of the second preset bit.
Further, the controller further comprises: the third processing module is connected with the first processing module, the second processing module and the display device and used for receiving the image output by the first processing module or the image output by the second processing module and outputting the received image to the display device; and the second control module is connected with the third processing module and the first control module, and is further used for controlling the third processing module to receive the image output by the first processing module when the source end is determined to allow the output of the preset type of image, and controlling the third processing module to receive the image output by the second processing module when the source end is determined not to allow the output of the preset type of image.
Further, the controller further comprises: the fourth storage module is used for storing the first configuration data, wherein the first configuration data is used for representing the receiving capability of the controller; the fifth storage module is used for storing the identification information of the display device; and the first interface is connected with the fourth storage module and the fifth storage module and is used for transmitting the receiving capability of the controller and the identification information of the display device to the source end, wherein the source end generates second configuration data according to the first configuration data and the identification information of the display device, and the second configuration data is used for representing the output capability of the source end.
Further, the controller further comprises: the sixth storage module is configured to store a value of a third preset bit, where the value of the third preset bit is used to represent whether the controller successfully receives the image output by the source end; and the first interface is connected with the sixth storage module and is further used for transmitting the value of the third preset bit to the source end, wherein when the source end determines that the controller fails to receive according to the value of the third preset bit, the source end adjusts the second configuration data.
Further, the second processing module is connected to the fifth storage module, and is further configured to determine a display resolution of the display device according to the identification information of the display device, and reduce or enlarge the resolution of the stored image to the display resolution by using a preset algorithm.
Further, the first processing module is further configured to, when receiving a first preset command output by the source end, take the received first image as an image of a preset type, and store the first image in the first storage module, where the source end outputs the first preset command within a preset time period after outputting the first image.
Further, the first processing module is further configured to transmit the received second image to the display device when the first preset command is not received or a second preset command output by the source end is received, where the source end outputs the second preset command within a preset time period before outputting the second image.
Further, the controller further comprises: and the second interface is connected with the source end, the first processing module and the second processing module and used for receiving the image output by the source end and outputting the image output by the source end to the first processing module and the second processing module.
According to another aspect of the embodiments of the present invention, there is also provided a processing method of a controller of a display device, including: judging whether the source end allows outputting the image of the preset type, wherein the source end stops outputting the image of the preset type after outputting the image of the preset type; if the source end is judged to allow the source end to output the image of the preset type, the image output by the source end is received through the first processing module, the image of the preset type is stored in the first storage module, and the image stored in the first storage module is output to the display device; if the source end does not allow the output of the preset type image, the second processing module receives the image output by the source end, stores the image output by the source end into the first storage module, reduces or enlarges the image stored in the first storage module, and outputs the reduced or enlarged image to the display device.
Further, the judging whether the source end allows the output of the preset type of image includes: acquiring a value of a first preset bit stored by a second storage module, wherein the value of the first preset bit is used for representing whether a source end allows outputting an image of a preset type; judging whether the source end allows outputting the image of the preset type according to the value of the first preset bit; if the value of the first preset bit is judged to be the first preset value, determining that the source end allows the output of the preset type of image; and if the value of the first preset bit is judged to be the second preset value, determining that the source end does not allow the output of the preset type of image.
Further, before obtaining the value of the first preset bit stored in the second storage module, the method further includes: acquiring a value of a second preset bit stored in a third storage module, wherein the value of the second preset bit is used for representing whether the display device allows to receive the preset type of image; and transmitting the value of the second preset bit to the source end through the first interface, and receiving the value of the first preset bit output by the source end, wherein the source end generates the value of the first preset bit according to the value of the second preset bit.
Further, before the image stored in the first storage module is output to the display device through the first processing module, or the reduced or enlarged image is output to the display device through the second processing module, the method further includes: when the source end is determined to allow the output of the preset type of image, receiving the image output by the first processing module through the third processing module, and outputting the received image to the display device; and when the source end is determined not to allow the preset type of image to be output, receiving the image output by the second processing module through the third processing module, and outputting the received image to the display device.
According to another aspect of the embodiments of the present invention, there is also provided a storage medium including a stored program, wherein when the program is executed, a device in which the storage medium is controlled executes the processing method of the controller of the display apparatus in the above embodiments.
According to another aspect of the embodiments of the present invention, there is also provided a processor for executing a program, where the program executes a processing method of a controller of a display device in the above embodiments.
In the embodiment of the invention, the first processing module and the second processing module are arranged in the controller, the first processing module and the second processing module share the first storage module, and the first control module controls the first processing module or the second processing module to work, so that the controller has both the PSR function and the Scaler function, the functions of the controller are rich, the capacity or the number of memories is not required to be increased, the technical effects of improving compatibility, reducing size, increasing yield, reducing cost and increasing competitiveness are achieved, and the technical problems of single function and high cost of the controller of the display device in the prior art are solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic diagram of a controller of a display device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an alternative controller for a display device according to an embodiment of the present invention; and
fig. 3 is a flowchart of a processing method of a controller of a display apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
According to an embodiment of the present invention, there is provided an embodiment of a controller of a display device.
Fig. 1 is a schematic diagram of a controller of a display device according to an embodiment of the present invention, as shown in fig. 1, the controller being connected between the display device and a source terminal, the controller including: a first processing module 10, a second processing module 20, a first storage module 30 and a first control module 40.
The first processing module 10 is connected to the source end and the display device, and is configured to receive an image output by the source end, store an image of a preset type, and output the stored image to the display device, where the source end stops outputting the image after outputting the image of the preset type; the second processing module 20 is connected to the source terminal and the display device, and is configured to receive an image output by the source terminal, store the image output by the source terminal, perform reduction or amplification processing on the stored image, and output the reduced or amplified image to the display device; the first storage module 30 is connected to the first processing module and the second processing module, and is configured to store a preset type of image or an image output by the source end; the first control module 40 is connected to the first processing module and the second processing module, and is configured to determine whether the source end allows outputting an image of a preset type, control the first processing module to receive the image output by the source end if it is determined that the source end allows outputting the image of the preset type, and control the second processing module to receive the image output by the source end if it is determined that the source end does not allow outputting the image of the preset type.
Specifically, the controller may be a TCON chip; the source terminal may be a device that transmits an image to be displayed, for example, a processing device of a device such as a notebook, a tablet computer, and an IPAD; the display device may be a device for displaying images, for example, a display screen of a device such as a notebook, a tablet computer, and an IPAD, or an external display screen. The first processing module may be a module for implementing a PSR function, the second processing module may be a module for implementing a Scaler function, the first storage module may be a Memory shared by the PSR module and the Scaler module, for example, the first storage module may be a high speed Memory such as an SRAM (Static Random Access Memory) or a DDR (Double Data Synchronous Dynamic Random Access Memory), the first control module may be a switch control logic of the PSR module and the Scaler module in the TCON chip, and the predetermined type of image may be a still image.
In an alternative scheme, as shown in fig. 2, a TCON chip may be redesigned, a PSR module and a Scaler module are disposed in the TCON chip, and both modules may share a same memory module and control the PSR module and the Scaler module through a switch control logic, when a source allows transmission of a still image, for example, the source and a display device both support a PSR function, or the source does not support the PSR function, and the display device supports the PSR function, the switch control logic may control the PSR module to operate, and receive an image transmitted by the source by the PSR module, and when a still image is received, the still image may be stored in a shared memory and automatically transmitted to the display device for display; when the source does not allow outputting a still image, for example, neither the source nor the display supports the PSR function, or the source supports the PSR function but the display does not support the PSR function, the switch control logic may control the Scaler module to operate, receive the image transmitted from the source by the Scaler module, store the image in the shared memory, convert the resolution of the image to be consistent with the resolution of the display, and then display the image by the display.
According to the above embodiment of the present invention, the first processing module and the second processing module are arranged in the controller, the first processing module and the second processing module share the first storage module, and the first control module controls the first processing module or the second processing module to operate, so that the controller has both the PSR function and the Scaler function, and the controller has rich functions, and does not need to increase the capacity or number of memories, thereby achieving the technical effects of improving compatibility, reducing size, increasing yield, reducing cost, and increasing competitiveness, and further solving the technical problems of single function and high cost of the controller of the display device in the prior art.
Optionally, as shown in fig. 1, in the above embodiment of the present invention, the controller further includes: a second memory module 50.
The second storage module 50 is configured to store a value of a first preset bit, where the value of the first preset bit is used to represent whether the source end allows outputting an image of a preset type; the first control module is connected with the second storage module and used for determining that the source end allows the output of the image of the preset type when the value of the first preset bit is judged to be the first preset value, and determining that the source end does not allow the output of the image of the preset type when the value of the first preset bit is judged to be the second preset value.
Specifically, the second storage module may be a register with an address of 00170h in a DPCD (configuration Data of a DP interface, which is an abbreviation of Display Port configuration Data) area, where the DPCD area is a configuration Data area defined by a unified, public, and fixed address of an existing DP interface standard; the first preset bit may be a 0 th bit (bit0) in the register, the value of the bit may be 0 or 1, and a value corresponding to whether the source side allows outputting the still image may be predefined, for example, a value of 1 indicates that the source side allows outputting the still image, a value of 0 indicates that the source side does not allow outputting the still image, that is, the first preset value is 1, and the second preset value is 0. It should be noted that, when the value of 1 indicates that the source end allows outputting a still image, and the value of 0 indicates that the source end does not allow outputting a still image, the default initial value of 00170h bit0 may be 0, and the value of the bit may be modified according to actual needs, that is, the bit is set to 1.
In an alternative scheme, as shown in fig. 2, the switch control logic may control the PSR module or Scaler module to operate according to the value of 00170h bit0 in the DPCD region, and when the value is 1, control the PSR module to operate; and when the value is 0, the Scaler module is controlled to work, so that the TCON chip can realize both the PSR function and the Scaler function.
Optionally, in the above embodiment of the present invention, as shown in fig. 1, the controller further includes: a third memory module 60 and a first interface 70.
The third storage module 60 is configured to store a value of a second preset bit, where the value of the second preset bit is used to represent whether the display apparatus allows receiving an image of a preset type; the first interface 70 is connected to the third storage module and the second storage module, and is configured to transmit the value of the second preset bit to the source end, and receive the value of the first preset bit output by the source end, where the source end generates the value of the first preset bit according to the value of the second preset bit.
Specifically, the third storage module may be a register with an address of 00070h in the DPCD region, the second preset bit may be a 0 th bit (bit0) in the register, a value of the bit may be 0 or 1, a value corresponding to that the display device allows receiving a still image may be preset, that is, a value corresponding to that the display device supports the PSR function may be preset, for example, the value of 1 indicates that the display device allows receiving a still image, that is, the display device supports the PSR function, the value of 0 indicates that the display device does not allow receiving a still image, that is, the display device does not support the PSR function, it should be noted that the value of the register is written in by the software firmware configuration during mass production of the TCON chip, and cannot be modified; the first interface may be a link interactive interface, before transmitting an image, the source end first communicates with the TCON chip through the link interactive interface, and when interacting at the link layer, whether the display device supports PSR interaction is performed.
In an alternative scheme, as shown in fig. 2, before the source transmits an image, the source reads a value of 00070h bit0 in the DPCD region through the link interaction interface, determines whether the display device supports the PSR function according to the value, determines that the display device supports the PSR function when the value is 1, and writes a value of 1 in 00170h bit0 if the source also supports the PSR function; when the value is 0, it is determined that the display device does not support the PSR function, and since the default initial value of 00170h bit0 is 0, the source side does not need to modify the value of 00170h bit 0. Note that when the display device supports the PSR function and the source does not support the PSR function, the value of 00170h bit0 may be manually set to 1 by firmware configuration, but if the resolution of the source output image is different from that of the display device, the default initial value of 00170h bit0 may be kept unchanged. By the scheme, good compatibility can be realized.
Optionally, in the above embodiment of the present invention, as shown in fig. 1, the controller further includes: a third processing module 80 and a second control module 90.
The third processing module 80 is connected to the first processing module, the second processing module and the display device, and is configured to receive an image output by the first processing module or an image output by the second processing module, and output the received image to the display device; the second control module 90 is connected to the third processing module and the first control module, and is further configured to control the third processing module to receive the image output by the first processing module when it is determined that the source end allows outputting the image of the preset type, and control the third processing module to receive the image output by the second processing module when it is determined that the source end does not allow outputting the image of the preset type.
Specifically, the third processing module may be a multiplexing module, and the second control module may be a selection control logic for multiplexing channels in the TCON chip.
In an alternative, as shown in fig. 2, the multiplexing module may be controlled by a selection control logic, when the source allows transmission of a still image, the selection control logic may control the multiplexing module to receive the image transmitted by the PSR module, receive the image transmitted by the source by the PSR module, and when receiving the still image, store the still image in the shared memory and automatically transmit the still image to the display device for display; when the source end does not allow outputting the still image, the selection control logic can control the multiplexing module to receive the image transmitted by the Scaler module, the Scaler module receives the image transmitted by the source end, stores the image in the shared memory, converts the resolution of the image to be consistent with the resolution of the display device, and then displays the image by the display device.
Optionally, in the above embodiment of the present invention, as shown in fig. 1, the controller further includes: a fourth memory module 100 and a fifth memory module 110.
The fourth storage module 100 is configured to store first configuration data, where the first configuration data is used to characterize a receiving capability of the controller; the fifth storage module 110 is used for storing the identification information of the display device; the first interface is connected with the fourth storage module and the fifth storage module and is used for transmitting the receiving capability of the controller and the identification information of the display device to the source end, wherein the source end generates second configuration data according to the first configuration data and the identification information of the display device, and the second configuration data is used for representing the output capability of the source end.
Specifically, the fourth storage module may be all registers in the DPCD region, including: the registers with addresses 00170h and 00070h, that is, the registers include the second memory module and the third memory module, and the first configuration data may include: bandwidth BW, channel number lane, signal amplitude intensity, signal pre-emphasis, whether scrambling is supported, whether spread spectrum is supported, whether PSR function is supported, and the like; the Identification information of the Display device may be EDID (Extended Display Identification Data, which is short for Extended Display Identification Data) of the Display device, each Display device has its own EDID, and the EDID information is integrated in the firmware of the TCON chip (i.e., the fifth storage module).
In an alternative scheme, the source end may first successfully communicate with the TCON chip through the link interworking interface, and in the process, the source end may determine whether the display device supports the PSR function. Specifically, the source end reads the configuration of the DPCD region of the TCON chip, then the source end reads the EDID data, and writes the configuration parameters when actually transmitting the image in the corresponding register address bits according to the receiving capability of the TCON chip (note that the actual transmission parameter index should not exceed the receiving capability of the TCON chip, for example, the actual bandwidth is necessarily less than or equal to the receiving capability bandwidth of the TCON chip), and when the source end subsequently transmits the image, the actually corresponding register transmits the image to the TCON chip according to the configuration parameters.
Optionally, in the above embodiment of the present invention, as shown in fig. 1, the controller further includes: a sixth storage module 120.
The sixth storage module 120 is configured to store a value of a third preset bit, where the value of the third preset bit is used to represent whether the controller successfully receives the image output by the source; the first interface is connected with the sixth storage module and is further configured to transmit a value of a third preset bit to the source end, where the source end adjusts the second configuration data when determining that the controller fails to receive according to the value of the third preset bit.
Specifically, the sixth storage module may be a specific register in the DPCD region, a specific bit value in the register may be 0 or 1, and a value corresponding to whether the TCON chip can successfully receive the image transmitted by the source end may be predefined, for example, a value of 1 indicates that the TCON chip can successfully receive, and a value of 0 indicates that the TCON chip can fail to receive.
In an optional scheme, in order to ensure that the TCON chip can successfully receive an image transmitted by the source end, after the source end writes the corresponding register address bit into the configuration parameter during actual image transmission, the actual corresponding register transmits the image to the TCON chip, the TCON chip gives a success or failure value to a specific bit in a DPCD specific register, the source end reads the value of the specific bit, and if the value of the specific bit indicates failure, the source end strengthens parameters such as a signal amplitude value and pre-emphasis until the value of the specific bit indicates success. And the mass production complete machine system is 100% successful under the condition of fixed parameters.
Optionally, in the foregoing embodiment of the present invention, the second processing module is connected to the fifth storage module, and is further configured to determine a display resolution of the display device according to the identification information of the display device, and reduce or enlarge the resolution of the stored image to the display resolution by using a preset algorithm.
Specifically, the supported time sequences, namely, the resolution of the display device can be identified through the EDID information, at most 25 groups of time sequences can be supported in the EDID, and 8 groups of standard time sequences are added to 17 groups of built-in time sequences; the preset algorithm can be an interpolation software algorithm, the scaler needs to support a plurality of time sequences sent by the source end, and can be specifically realized through the interpolation software algorithm, the more the supported time sequences, the more the interpolation software algorithm is complex, the higher the price of the TCON chip is, therefore, the different time sequences can be selectively supported according to different TCON chip forms, prices and product definitions, and not all 28 time sequences need to be supported.
In an alternative scheme, when the Scaler module operates, the PSR module stops operating, the Scaler module may capture each frame image output by the source end, store the image into the shared memory, and perform reduction or enlargement to the display resolution of the display device through an interpolation software algorithm, so as to achieve normal display of the screen, for example, when the display resolution of the display device is 1920 × 1080, an image greater than the resolution (for example, the resolution of the image is 3840:2160, 3200:1800, 2560:1240, etc.) may be reduced through scaling down, and an image less than the resolution (for example, the resolution of the image is 1366:768, 1280:720, 1024 × 768, 800:, etc.) may be enlarged through scaling up.
Optionally, in the foregoing embodiment of the present invention, the first processing module is further configured to, when receiving a first preset command output by the source end, take the received first image as an image of a preset type, and store the first image in the first storage module, where the source end outputs the first preset command within a preset time period after outputting the first image.
Specifically, the first preset command may be a command to enter the PSR, and the preset time period may be a frame blanking (vertical blanking) period of the image.
In an alternative scheme, when the source end needs to enter the PSR for transmitting the still image, the source end may send a command packet entering the PSR during vertical blanking of the still image, the display device decodes the corresponding PSR entering command, controls the PSR module to store the still image in the shared memory, and at this time, the source end stops outputting the image and cuts off the transmission interface.
Optionally, in the foregoing embodiment of the present invention, the first processing module is further configured to transmit the received second image to the display device when the first preset command is not received or a second preset command output by the source end is received, where the source end outputs the second preset command within a preset time period before outputting the second image.
Specifically, the second image may be an image output by the source end in real time when the PSR module enters the non-PSR mode, or may be an updated image output by the source end when the PSR module enters the PSR mode.
In an alternative scheme, when the source end needs to update the image, the source end sends a command data packet for exiting the PSR during vertical scanning before sending the updated image, the PSR module switches bypass to a non-PSR mode, and the display device displays the image received in real time.
Optionally, in the above embodiment of the present invention, as shown in fig. 1, the controller further includes: a second interface 130.
The second interface 130 is connected to the source end, the first processing module and the second processing module, and is configured to receive an image output by the source end and output the image output by the source end to the first processing module and the second processing module.
Specifically, the second interface may be a high-speed data interface for receiving the image output by the source terminal.
In an alternative scheme, as shown in fig. 2, after the source end and the TCON chip successfully perform communication handshake, the source end may output an image to a receiving physical layer of the TCON chip through the data interface.
The controller of the display device provided by the scheme has the following advantages: the input end of the source end interface can be DP and eDP, and other interfaces can be converted into DP or eDP, for example, VGA is converted into DP, HDMI is converted into DP, DVI is converted into DP, type-c is converted into DP, and the like, so that the method has good compatibility and expansibility; the use of the same memory module for different modules is realized, each functional module is not required to be provided with a large-capacity memory, the hardware cost of the TCON chip is greatly reduced, different product forms are supported, flexibility and changeability are realized, and good compatibility and expansibility are realized, so that the product has strong market competitiveness; through link handshake, the source end and the TCON chip functional module channel can be selected in a self-adaptive manner, flexibility is achieved, no human intervention is needed, and usability and compatibility are high.
Example 2
According to an embodiment of the present invention, there is provided an embodiment of a processing method of a controller of a display device, it should be noted that the steps shown in the flowchart of the drawings may be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in an order different from that here.
Fig. 3 is a flowchart of a processing method of a controller of a display device according to an embodiment of the present invention, as shown in fig. 3, the method including the steps of:
step S302, determining whether the source end allows outputting the image of the preset type, wherein the source end stops outputting the image of the preset type.
Specifically, the source end may be a device that transmits an image to be displayed, for example, a processing device of a device such as a notebook, a tablet, and an IPAD; the preset type of image described above may be a still image.
Step S304, if it is determined that the source end allows outputting the image of the preset type, receiving the image output by the source end through the first processing module, storing the image of the preset type in the first storage module, and outputting the image stored in the first storage module to the display device.
Specifically, the first processing module may be a module that implements a PSR function; the first storage module may be a Memory shared by the PSR module and the Scaler module, and may be, for example, a high-speed Memory such as an SRAM (Static Random Access Memory) or a DDR (Double Data Rate Synchronous Dynamic Random Access Memory); the display device may be a device for displaying images, for example, a display screen of a device such as a notebook, a tablet computer, and an IPAD, or an external display screen.
Step S306, if it is determined that the source end does not allow the output of the preset type of image, receiving the image output by the source end through the second processing module, storing the image output by the source end in the first storage module, performing reduction or enlargement processing on the image stored in the first storage module, and outputting the reduced or enlarged image to the display device.
Specifically, the second processing module may be a module for implementing a Scaler function.
In an optional scheme, a TCON chip structure of a display device is as shown in fig. 2, the TCON chip may be redesigned, a PSR module and a Scaler module are disposed in the TCON chip, the two modules may share a same memory module, and the PSR module and the Scaler module are controlled by a switch control logic, when a source allows transmission of a still image, for example, the source and the display device both support a PSR function, or the source does not support the PSR function, and the display device supports the PSR function, the switch control logic may control the PSR module to operate, the PSR module receives an image transmitted by the source, and when the still image is received, the still image may be stored in a shared memory, and the still image is automatically transmitted to the display device for display; when the source does not allow outputting a still image, for example, neither the source nor the display supports the PSR function, or the source supports the PSR function but the display does not support the PSR function, the switch control logic may control the Scaler module to operate, receive the image transmitted from the source by the Scaler module, store the image in the shared memory, convert the resolution of the image to be consistent with the resolution of the display, and then display the image by the display.
According to the above embodiment of the present invention, the first processing module and the second processing module are arranged in the controller, the first processing module and the second processing module share the first storage module, and the first control module controls the first processing module or the second processing module to operate, so that the controller has both the PSR function and the Scaler function, and the controller has rich functions, and does not need to increase the capacity or number of memories, thereby achieving the technical effects of improving compatibility, reducing size, increasing yield, reducing cost, and increasing competitiveness, and further solving the technical problems of single function and high cost of the controller of the display device in the prior art.
Optionally, in the foregoing embodiment of the present invention, the step S302 of determining whether the source end allows outputting the preset type of image includes: acquiring a value of a first preset bit stored by a second storage module, wherein the value of the first preset bit is used for representing whether a source end allows outputting an image of a preset type; judging whether the source end allows outputting the image of the preset type according to the value of the first preset bit; if the value of the first preset bit is judged to be the first preset value, determining that the source end allows the output of the preset type of image; and if the value of the first preset bit is judged to be the second preset value, determining that the source end does not allow the output of the preset type of image.
Specifically, the second storage module may be a register with an address of 00170h in a DPCD (configuration Data of a DP interface, which is an abbreviation of Display Port configuration Data) area, where the DPCD area is a configuration Data area defined by a unified, public, and fixed address of an existing DP interface standard; the first preset bit may be a 0 th bit (bit0) in the register, the value of the bit may be 0 or 1, and a value corresponding to whether the source side allows outputting the still image may be predefined, for example, a value of 1 indicates that the source side allows outputting the still image, a value of 0 indicates that the source side does not allow outputting the still image, that is, the first preset value is 1, and the second preset value is 0. It should be noted that, when the value of 1 indicates that the source end allows outputting a still image, and the value of 0 indicates that the source end does not allow outputting a still image, the default initial value of 00170h bit0 may be 0, and the value of the bit may be modified according to actual needs, that is, the bit is set to 1.
In an optional scheme, the switch control logic can control the PSR module or Scaler module to work according to the value of 00170h bit0 in the DPCD area, and when the value is 1, the switch control logic controls the PSR module to work; and when the value is 0, the Scaler module is controlled to work, so that the TCON chip can realize both the PSR function and the Scaler function.
Optionally, in the above embodiment of the present invention, before obtaining the value of the first preset bit stored in the second storage module, the method further includes: acquiring a value of a second preset bit stored in a third storage module, wherein the value of the second preset bit is used for representing whether the display device allows to receive the preset type of image; and transmitting the value of the second preset bit to the source end through the first interface, and receiving the value of the first preset bit output by the source end, wherein the source end generates the value of the first preset bit according to the value of the second preset bit.
Specifically, the third storage module may be a register with an address of 00070h in the DPCD region, the second preset bit may be a 0 th bit (bit0) in the register, a value of the bit may be 0 or 1, a value corresponding to that the display device allows receiving a still image may be preset, that is, a value corresponding to that the display device supports the PSR function may be preset, for example, the value of 1 indicates that the display device allows receiving a still image, that is, the display device supports the PSR function, the value of 0 indicates that the display device does not allow receiving a still image, that is, the display device does not support the PSR function, it should be noted that the value of the register is written in by the software firmware configuration during mass production of the TCON chip, and cannot be modified; the first interface may be a link interactive interface, before transmitting an image, the source end first communicates with the TCON chip through the link interactive interface, and when interacting at the link layer, whether the display device supports PSR interaction is performed.
In an alternative scheme, before the source transmits an image, the source reads a value of 00070h bit0 in the DPCD region through a link interaction interface, determines whether the display device supports the PSR function according to the value, determines that the display device supports the PSR function when the value is 1, and writes a value of 1 in 00170h bit0 if the source also supports the PSR function; when the value is 0, it is determined that the display device does not support the PSR function, and since the default initial value of 00170h bit0 is 0, the source side does not need to modify the default initial value of 00170h bit 0. Note that when the display device supports the PSR function and the source does not support the PSR function, the value of 00170h bit0 may be manually set to 1 by firmware configuration, but if the resolution of the source output image is different from that of the display device, the default initial value of 00170h bit0 may be kept unchanged. By the scheme, good compatibility can be realized.
Optionally, in the foregoing embodiment of the present invention, in step S304, before outputting the image stored in the first storage module to the display device through the first processing module, or in step S306, before outputting the reduced or enlarged image to the display device through the second processing module, the method further includes: when the source end is determined to allow the output of the preset type of image, receiving the image output by the first processing module through the third processing module, and outputting the received image to the display device; and when the source end is determined not to allow the preset type of image to be output, receiving the image output by the second processing module through the third processing module, and outputting the received image to the display device.
In particular, the third processing module may be a multiplexing module, the second control module may be selection control logic for multiplexing channels in the TCON chip,
in an alternative, as shown in fig. 2, the multiplexing module may be controlled by a selection control logic, when the source allows transmission of a still image, the selection control logic may control the multiplexing module to receive the image transmitted by the PSR module, receive the image transmitted by the source by the PSR module, and when receiving the still image, store the still image in the shared memory and automatically transmit the still image to the display device for display; when the source end does not allow outputting the still image, the selection control logic can control the multiplexing module to receive the image transmitted by the Scaler module, the Scaler module receives the image transmitted by the source end, stores the image in the shared memory, converts the resolution of the image to be consistent with the resolution of the display device, and then displays the image by the display device.
Example 3
According to an embodiment of the present invention, there is provided an embodiment of a storage medium including a stored program, wherein a device in which the storage medium is controlled when the program is executed performs the processing method of the controller of the display apparatus in the above-described embodiment 2.
Example 4
According to an embodiment of the present invention, there is provided an embodiment of a processor for executing a program, wherein the program executes a processing method of a controller of a display device in the above-described embodiment 2.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (16)
1. A controller for a display device, the controller being connected between the display device and a source terminal, the controller comprising:
the first processing module is connected with the source end and the display device and used for receiving the image output by the source end, storing a preset type of image and outputting the stored image to the display device, wherein the source end stops outputting the preset type of image and the preset type of image is a static image;
the second processing module is connected with the source end and the display device and used for receiving the image output by the source end, storing the image output by the source end, reducing or amplifying the stored image and outputting the reduced or amplified image to the display device;
the first storage module is connected with the first processing module and the second processing module and is used for storing the preset type of images or the images output by the source end;
the first control module is connected to the first processing module and the second processing module, and is configured to determine whether the source end allows outputting the image of the preset type, control the first processing module to receive the image output by the source end if it is determined that the source end allows outputting the image of the preset type, and control the second processing module to receive the image output by the source end if it is determined that the source end does not allow outputting the image of the preset type.
2. The controller of claim 1,
the controller further includes: the second storage module is configured to store a value of a first preset bit, where the value of the first preset bit is used to characterize whether the source end allows outputting the image of the preset type;
the first control module is connected to the second storage module, and configured to determine that the source end allows the output of the image of the preset type when the value of the first preset bit is determined to be a first preset value, and determine that the source end does not allow the output of the image of the preset type when the value of the first preset bit is determined to be a second preset value.
3. The controller of claim 2, further comprising:
the third storage module is used for storing a value of a second preset bit, wherein the value of the second preset bit is used for representing whether the display device allows to receive the preset type of image or not;
and the first interface is connected with the third storage module and the second storage module, and is configured to transmit the value of the second preset bit to the source end and receive the value of the first preset bit output by the source end, where the source end generates the value of the first preset bit according to the value of the second preset bit.
4. The controller of claim 1, further comprising:
the third processing module is connected with the first processing module, the second processing module and the display device, and is used for receiving the image output by the first processing module or the image output by the second processing module and outputting the received image to the display device;
the second control module is connected to the third processing module and the first control module, and is further configured to control the third processing module to receive the image output by the first processing module when it is determined that the source end allows the output of the image of the preset type, and control the third processing module to receive the image output by the second processing module when it is determined that the source end does not allow the output of the image of the preset type.
5. The controller of claim 1, further comprising:
a fourth storage module, configured to store first configuration data, where the first configuration data is used to characterize a receiving capability of the controller;
the fifth storage module is used for storing the identification information of the display device;
and a first interface, connected to the fourth storage module and the fifth storage module, configured to transmit a receiving capability of the controller and identification information of the display device to the source end, where the source end generates second configuration data according to the first configuration data and the identification information of the display device, and the second configuration data is used to represent an output capability of the source end.
6. The controller of claim 5,
the controller further includes: a sixth storage module, configured to store a value of a third preset bit, where the value of the third preset bit is used to characterize whether the controller successfully receives the image output by the source end;
the first interface is connected to the sixth storage module, and is further configured to transmit the value of the third preset bit to the source end, where the source end adjusts the second configuration data when determining that the controller fails to receive according to the value of the third preset bit.
7. The controller according to claim 5, wherein the second processing module, connected to the fifth storage module, is further configured to determine a display resolution of the display device according to the identification information of the display device, and reduce or enlarge the resolution of the stored image to the display resolution by a preset algorithm.
8. The controller according to claim 1, wherein the first processing module is further configured to, when receiving a first preset command output by the source, take the received first image as the image of the preset type, and store the first image in the first storage module, wherein the source outputs the first preset command within a preset time period after outputting the first image.
9. The controller according to claim 8, wherein the first processing module is further configured to receive a second preset command when the first preset command is not received or a second preset command output by the source end is received
Transmitting the image to the display device, wherein the source end outputs the second preset command within the preset time period before outputting the second image.
10. The controller of claim 1, further comprising:
and the second interface is connected with the source end, the first processing module and the second processing module, and is used for receiving the image output by the source end and outputting the image output by the source end to the first processing module and the second processing module.
11. A processing method of a controller of a display device, comprising:
judging whether a source end allows outputting an image of a preset type, wherein the source end stops outputting the image of the preset type after outputting the image of the preset type, and the image of the preset type is a still image;
if the source end is judged to allow the source end to output the image of the preset type, receiving the image output by the source end through a first processing module, storing the image of the preset type to a first storage module, and outputting the image stored by the first storage module to a display device;
if the source end does not allow the preset type of image to be output, receiving the image output by the source end through a second processing module, storing the image output by the source end into the first storage module, performing reduction or amplification processing on the image stored in the first storage module, and outputting the reduced or amplified image to the display device.
12. The method of claim 11, wherein determining whether the source allows outputting the preset type of image comprises:
acquiring a value of a first preset bit stored in a second storage module, wherein the value of the first preset bit is used for representing whether the source end allows to output the image of the preset type;
judging whether the source end allows the output of the image of the preset type according to the value of the first preset bit;
if the value of the first preset bit is judged to be a first preset value, determining that the source end allows the output of the preset type of image;
and if the value of the first preset bit is judged to be a second preset value, determining that the source end does not allow the preset type of image to be output.
13. The method of claim 12, wherein prior to obtaining the value of the first predetermined bit stored by the second storage module, the method further comprises:
acquiring a value of a second preset bit stored in a third storage module, wherein the value of the second preset bit is used for representing whether the display device allows to receive the preset type of image;
and transmitting the value of the second preset bit to the source end through a first interface, and receiving the value of the first preset bit output by the source end, wherein the source end generates the value of the first preset bit according to the value of the second preset bit.
14. The method according to claim 11, wherein before outputting the image stored in the first storage module to a display device through a first processing module or outputting the reduced or enlarged image to the display device through a second processing module, the method further comprises:
when the source end is determined to allow the preset type of image to be output, receiving the image output by the first processing module through a third processing module, and outputting the received image to the display device;
and when the source end is determined not to allow the preset type of image to be output, receiving the image output by the second processing module through the third processing module, and outputting the received image to the display device.
15. A storage medium characterized by comprising a stored program, wherein an apparatus in which the storage medium is located is controlled to execute a processing method of a controller of a display device according to any one of claims 11 to 14 when the program is executed.
16. A processor, characterized in that the processor is configured to execute a program, wherein the program executes a processing method of a controller of a display device according to any one of claims 11 to 14.
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| CN111477189B (en) * | 2020-05-11 | 2021-11-05 | 硅谷数模(苏州)半导体有限公司 | Time schedule controller and display device |
| CN111710282B (en) * | 2020-07-02 | 2023-04-07 | 硅谷数模(苏州)半导体股份有限公司 | Control method and control device of time schedule controller and data transmission system |
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