CN117636770A - Image processing method and display device - Google Patents
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- CN117636770A CN117636770A CN202210964051.0A CN202210964051A CN117636770A CN 117636770 A CN117636770 A CN 117636770A CN 202210964051 A CN202210964051 A CN 202210964051A CN 117636770 A CN117636770 A CN 117636770A
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Abstract
An image processing method and a display device are provided. The image processing method is suitable for a display device, the display device comprises a zoom controller and a panel module, and the image processing method comprises the following steps: when receiving a notification signal from a source end, the zoom controller stores the current image picture in a memory; the zoom controller provides the current image picture to the panel module so that the panel module displays the current image picture; the zoom controller performs a re-handshake with the source and the panel module to receive the new image provided by the source and transmit the new image to the panel module, so that the panel module displays the new image.
Description
Technical Field
The present invention relates to an image processing method and a display device, and more particularly, to an image processing method capable of avoiding black frame generation when switching display formats and a display device for executing the image processing method.
Background
In the application of the display device, the user may switch the display format, for example, parameters such as a switching resolution, a frame rate (frame rate), a color depth (color depth), etc., so that the display device conforms to the current use situation of the user.
In the prior art, when a user selects a different display format for switching through an application program or an on-screen display (OSD) option, the zoom controller needs to interrupt the image communication with the source and the panel module first, and then to handshake again based on a new display format and the source and the panel module to provide a new image to the panel module. However, when the display format is switched, the zoom controller interrupts the image communication with the source and the panel module and then resumes the normal display after the display device has to enter the full black screen, and the time required for resuming the communication is about 4-5 seconds or longer, so that the display device will display the black screen for 4-5 seconds or longer, and the user still has to wait for the completion of the resuming procedure before the display device can resume the view.
Disclosure of Invention
The present disclosure provides an image processing method, which is suitable for a display device, wherein the display device includes a zoom controller and a panel module, and the image processing method includes: when the zoom controller receives a notification signal from the source end that the display format is to be switched, the current image picture is stored in the memory. The zoom controller provides the current image picture to the panel module, so that the panel module displays the current image picture. The zoom controller is re-handshake with the source end and the panel module to receive the new image provided by the source end and transmit the new image to the panel module, so that the panel module displays the new image.
In some embodiments, the switching of the display format includes display timing switching, version switching of the DP interface, version switching of the HDMI interface, HDMI2.1 TMDS mode switching to HDMI2.1FRL mode, DP HBR2 switching to HBR3, on/off switching of Freesync, on/off switching of HDR, or the like.
In some embodiments, the panel module further includes a timing controller through which the panel module is interleaved with the zoom controller.
In some embodiments, the panel module further includes a backlight module, and the panel module does not turn off the backlight module when the panel module sequentially displays the current image frame and the new image frame.
In some embodiments, the switching of the display format is by an application of an operating system in the source or an on-screen display (OSD) option of the display device.
In some embodiments, after the panel module displays the new image frame, the method further includes confirming, by the operating system or the display device, that the switching of the display format is completed.
The display device is connected to the source end through signals and comprises a zoom controller and a panel module. When the zoom controller receives a notification signal from the source end that the display format is to be switched, the current image picture is stored in the memory. The panel module is electrically connected to the scaling controller, the scaling controller provides the current image frame to the panel module to enable the panel module to display the current image frame, and the scaling controller is in re-handshake with the source end and the panel module to receive the new image frame provided by the source end and transmit the new image frame to the panel module to enable the panel module to display the new image frame.
In some embodiments, the memory is built into the zoom controller.
In summary, in order to solve the long-time black frame problem generated when the display format is switched in the prior art, an image processing method and a display device are provided, which enable the user to switch the display format instantly without generating black frames during the switching process, and completely eliminate the waiting time required by the user when switching the display format and the black frame problem generated during the switching, so as to achieve a smoother switching effect.
Drawings
Fig. 1 is a schematic block diagram of a display device according to an embodiment of the present disclosure.
Fig. 2 is a flow chart of an image processing method according to an embodiment of the present disclosure.
Fig. 3A to 3C are schematic diagrams illustrating a continuous state of the display device when the display format is switched according to an embodiment of the present invention.
Fig. 4A to 4C are schematic views showing a continuous state of a display device when switching display formats according to the related art.
Detailed Description
The following detailed description of the preferred embodiments is provided merely as an example, and is not intended to limit the scope of the present disclosure. In addition, some components are omitted from the drawings in the embodiments to clearly show the technical features of the present invention. The same reference numbers will be used throughout the drawings to refer to the same or like components.
Fig. 1 is a block diagram of a display device according to an embodiment of the invention, referring to fig. 1, the display device 10 includes a scaling controller (Scaler IC) 12 and a panel module 14, and the scaling controller 12 is electrically connected to the panel module 14 for transmitting image signals. The zoom controller 12 has a memory 16 built therein for storing the image frames. The panel module 14 is provided with a timing controller 18 and a backlight module 20, and the panel module 14 performs signal transmission with the zoom controller 12 through the timing controller 18, so that the timing controller 18 receives the image frame from the zoom controller 12. In the display device 10, the zoom controller 12 is connected to the source end 24 through the image transmission interface 22, and in one embodiment, the image transmission interface 22 is a high-definition multimedia interface (High Definition Multimedia Interface, HDMI) or a Display Port (DP) interface, and the source end 24 is a host computer or a notebook computer.
When the zoom controller 12 receives the notification signal from the source end 24 that the display format is to be switched, the zoom controller 12 stores the current image frame in the built-in memory 16, and the zoom controller 12 provides the current image frame from the memory 16 to the timing controller 18 of the panel module 14 to enable the panel module 14 to display the current image frame, on the other hand, the zoom controller 12 performs a re-handshake with the source end 24 and the timing controller 18 of the panel module 14, and after completing the re-handshake, the zoom controller 12 receives the new image frame provided by the source end 24 and transmits the new image frame to the timing controller 18 to enable the panel module 14 to display the new image frame instead of the current image frame. In the process of switching the current image frame to the new image frame, the backlight module 20 is not turned off by the panel module 14, so as to save the restart time of the panel module 14.
In an embodiment, the switching of the display format includes switching of display timing, switching of version of the DP interface, switching of version of the HDMI interface, switching of HDMI2.1 TMDS mode to HDMI2.1FRL mode, switching of DP HBR2 to HBR3, switching of freeync on/off, switching of HDR on/off, etc., wherein the switching of display timing further includes switching of parameters such as resolution, frame rate (frame rate) or color depth (color depth) switching.
Fig. 2 is a schematic flow chart of an image processing method according to an embodiment of the present disclosure, please refer to fig. 1 and fig. 2 at the same time, in which the flow chart of the image processing method performed by the display device 10 at least includes steps S10 to S14. When the user selects to switch the display format through an application program in an Operating System (OS) in the source 24 or an on-screen display (OSD) option of the display device 10, the source 24 generates a notification signal corresponding to the display format to be switched and transmits the notification signal to the zoom controller 12 via the image transmission interface 22, and when the zoom controller 12 receives the notification signal from the source 24, the current image currently displayed on the display device 10 is stored in the built-in memory 16 as shown in step S10. In step S12, the zoom controller 12 provides the current image frame to the panel module 14, so that the panel module 14 displays the current image frame. In step S14, the zoom controller 12 performs a re-handshake with the source 24 and the timing controller 18 of the panel module 14, and after completing the re-handshake, the zoom controller 12 receives the new image provided by the source 24 and transmits the new image to the timing controller 18 of the panel module 14, so that the panel module 14 displays the new image. Accordingly, the zoom controller 12 provides the current image stored in the memory 16 to the panel module 14 until the zoom controller 12 re-handshakes with the source end 24 and the panel module 14 and then provides the new image to the panel module 14, so that no black image is generated during the switching process.
In one embodiment, the zoom controller 12 performs the above steps S12 and S14 simultaneously. In other words, when the zoom controller 12 provides the current image to the panel module 14, the zoom controller 12 also re-handshakes with the source 24 and the timing controller 18 of the panel module 14 until the zoom controller 12 provides the new image to the panel module 14. In the process of re-handshaking the zoom controller 12 with the source end 24 and the timing controller 18 of the panel module 14, the zoom controller 12 continuously provides the current image frame to the panel module 14 for display, so that the frame on the display device 10 is not interrupted, and the problem of black frame generation can be avoided.
After the step of displaying the new image on the panel module 14, as shown in fig. 1 and 2, the user can confirm that the switching of the display format is completed through the operating system of the source end 24 or the display device 10 as shown in step S16. In other words, if the user switches the display format through the application program of the operating system, after the switching is completed, the user can still confirm the switching result through the operating system; if the user switches the display format by displaying a menu on the screen of the display device 10, the user can confirm the switching result through the display device 10 after the switching is completed.
In an embodiment, the technical features of the present disclosure are actually described by switching the resolution in the display timing, fig. 3A to 3C are schematic diagrams of the continuous state of the display device according to an embodiment of the present disclosure when the display format is switched, and fig. 4A to 4C are schematic diagrams of the continuous state of the display device according to the prior art when the display format is switched, so as to show the effect that the present disclosure can achieve by comparing the differences between the present disclosure and the prior art.
Referring to fig. 1, first, as shown in fig. 3A, when the user selects to switch the desktop resolution through an on-screen display (OSD) option of the display device 10, the zoom controller 12 receives a notification signal from the source 24, and at this time, the zoom controller 12 stores the current image 26 currently being displayed on the display device 10 in the built-in memory 16. Then, the zoom controller 12 provides the current image 26 to the panel module 14, so that the display device 10 displays the current image 26, as shown in fig. 3B, and the display screen on the display device 10 is the same as that in fig. 3A, and is unchanged; at this time, the zoom controller 12 performs a new handshake with the source end 24 and the panel module 14, and after the new handshake is completed, the zoom controller 12 receives the new image 28 provided by the source end 24 and transmits it to the timing controller 18 of the panel module 14, so that the panel module 14 displays the new image 28, as shown in fig. 3C, the display device 10 has completed the resolution switching and displays the new image 28, and no black image is generated in the whole switching process.
As shown in fig. 4A, when the user selects to switch the desktop resolution through the on-screen display (OSD) option of the display device 10', the zoom controller will interrupt the image communication with the source and the panel module after receiving the notification signal from the source, as shown in fig. 4B, at this time, the display device 10' will display the black screen 30', until the zoom controller completes the re-handshake with the source and the panel module, the display device 10' will display the new image screen 28', as shown in fig. 4C, the display device 10' will complete the resolution switch to display the new image screen 28', and the display device 10' will have a state of displaying the black screen 30 'for more than 4-5 seconds during the entire switching process, as shown in fig. 4B, so that the user still has to wait for the re-start procedure to complete, and then can see the screen again on the display device 10'. In this embodiment, the resolution is switched, and even some display timings are related to the transition of the specification model, for example, the timing of switching the HDMI2.1 TMDS mode to HDMI2.1FRL mode and the DP HBR2 to HBR3, the switching time is longer, resulting in longer black frame 30'. In contrast, the display format is switched, so that the problem of the black picture 30' can be effectively solved, and a better display effect is provided for users.
To sum up, in order to solve the long-time black frame problem generated when the display format is switched in the prior art, an image processing method and a display device are provided, which allow a user to feel that the instant switching is completed when the display format is switched, and no black frame is generated in the switching process, so as to completely eliminate the waiting time required by the user when the display format is switched and the black frame problem generated when the display format is switched, thereby achieving a smoother switching effect.
The embodiments described hereinabove are merely illustrative of the principles and features of the present invention, which will be apparent to those skilled in the art and may be practiced in light of the specific details and features of the present invention and which are not necessarily limited to the details and features of the embodiments disclosed herein.
Reference numerals illustrate:
10,10' display device
12 zoom controller
14 Panel Module
16 memory
18 timing controller
20 backlight module
22 image transmission interface
24 Source end
26,26' current image frame
28,28' new image picture
30': black picture
S10-S16 steps
Claims (10)
1. An image processing method is applicable to a display device, the display device comprises a zoom controller and a panel module, and the image processing method comprises the following steps:
when the zoom controller receives a notification signal from a source end, which is to switch the display format, the current image picture is stored in a memory;
the zoom controller provides the current image picture to the panel module so that the panel module displays the current image picture; and
the zoom controller is in re-handshake with the source end and the panel module to receive the new image picture provided by the source end and transmit the new image picture to the panel module, so that the panel module displays the new image picture.
2. The image processing method as claimed in claim 1, wherein the switching of the display format includes switching of display timing, switching of version of DP interface, switching of version of HDMI interface, switching of HDMI2.1 TMDS mode to HDMI2.1FRL mode, switching of DP HBR2 to HBR3, switching of on/off of Freesync, or switching of on/off of HDR.
3. The image processing method of claim 1, wherein the panel module further comprises a timing controller, the panel module being configured to handshake with the zoom controller via the timing controller.
4. The image processing method as claimed in claim 1, wherein the panel module further comprises a backlight module, and the panel module does not turn off the backlight module when the panel module sequentially displays the current image frame and the new image frame.
5. The image processing method according to claim 1, wherein the switching of the display format is performed by an application of an operating system in the source or an on-screen display option of the display device, and the switching of the display format is confirmed to be completed by the operating system or the display device.
6. The image processing method of claim 1, wherein the memory is built into the zoom controller.
7. A display device signally connected to a source, the display device comprising:
the zoom controller stores the current image picture in the memory when receiving a notification signal from the source end that the display format is to be switched; and
the panel module is electrically connected to the scaling controller, the scaling controller provides the current image picture for the panel module, so that the panel module displays the current image picture, and the scaling controller is in recheck with the source end and the panel module so as to receive a new image picture provided by the source end and transmit the new image picture to the panel module, so that the panel module displays the new image picture.
8. The display device of claim 7, wherein the switching of the display format comprises switching of display timing, switching of version of DP interface, switching of version of HDMI interface, switching of HDMI2.1 TMDS mode to HDMI2.1FRL mode, switching of DP HBR2 to HBR3, switching of Freesync on/off, switching of HDR on/off, etc.
9. The display device of claim 7, wherein the panel module further comprises a timing controller, the panel module being configured to handshake with the zoom controller via the timing controller.
10. The display device of claim 7, wherein the switching of the display format is performed by an application of an operating system in the source or an on-screen display option of the display device, and the switching of the display format includes confirming that the switching of the display format is completed by the operating system or the display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210964051.0A CN117636770A (en) | 2022-08-11 | 2022-08-11 | Image processing method and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210964051.0A CN117636770A (en) | 2022-08-11 | 2022-08-11 | Image processing method and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117636770A true CN117636770A (en) | 2024-03-01 |
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| CN202210964051.0A Pending CN117636770A (en) | 2022-08-11 | 2022-08-11 | Image processing method and display device |
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| CN (1) | CN117636770A (en) |
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- 2022-08-11 CN CN202210964051.0A patent/CN117636770A/en active Pending
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