Video signal superposition method, device, equipment and storage medium

Abstract

The present invention relates to video signal processing technology and discloses a video signal superposition method, comprising: calculating the idle time after the original video completes displaying each frame once within one refresh time of a display as the superposition space of the video to be superimposed; designing a set frequency of the video to be superimposed and a channel corresponding to the set frequency according to the superposition space of the video to be superimposed and a preset video frequency range that is beneficial to the human brain, thereby obtaining the video to be superimposed that is beneficial to the human brain; temporally matching the video to be superimposed that is beneficial to the human brain with the original video, so that the video to be superimposed that is beneficial to the human brain forms a temporal correspondence with the superimposed space, thereby obtaining the superimposed video. The present invention can solve the problems in the prior art that a large number of video synthesis operations are required, which increases the complexity of video playback; and the synthesized picture has no beneficial effect on the original video, which easily increases the viewer's visual fatigue.

Description

Technical Field

[0001] The present invention relates to the technical field of video signal processing, and in particular to a video signal superposition method, device, equipment and storage medium. Background Art

[0002] It is difficult to achieve a complete temporal correspondence between the refresh rate of the monitor and the frame rate of the video played on the monitor. For example, if the refresh rate of the monitor is 60Hz, and the frame rate of a certain video is 30fps, then each frame of the video will be played twice, which will appear jerky.

[0003] Currently, solutions to this problem involve matching the refresh rate by repeating the video, or forcibly reducing the screen's refresh rate to match the video. Many television displays currently employ motion compensation to address this issue. This involves using an algorithm to synthesize the image between two frames and insert it between them to reduce the motion artifacts caused by repeated display. However, while these methods can address the issue of video motion artifacts, they require a significant amount of video synthesis operations, increasing the complexity of video playback. Furthermore, the synthesized image has no beneficial effect on the original video, potentially increasing visual fatigue for viewers. Summary of the Invention

[0004] The present invention provides a video signal superposition method, device, equipment and storage medium, the main purpose of which is to solve the problem in the prior art that motion compensation is used as a solution to the mismatch between the video playback frame rate and the refresh rate of the display, which requires a large number of video synthesis operations, increases the complexity of video playback; and the synthesized picture has no beneficial effect on the original video, which easily increases the viewer's visual fatigue.

[0005] In a first aspect, to achieve the above-mentioned object, the present invention provides a video signal superposition method, the method comprising:

[0006] According to the playback frame rate of the original video and the refresh rate of the display, the idle time after the original video completes displaying each frame within one refresh time of the display is calculated as the overlay space of the video to be overlaid;

[0007] According to the superposition space of the video to be superimposed and the preset frequency range of the video that is beneficial to the human brain, a set frequency of the video to be superimposed and a channel corresponding to the set frequency are designed to obtain the video to be superimposed that is beneficial to the human brain;

[0008] The video to be superimposed that is beneficial to the human brain and the original video are made to correspond in time, so that the video to be superimposed that is beneficial to the human brain and the superimposed space form a temporal correspondence to obtain the superimposed video.

[0009] As a preferred solution of the present invention, based on the playback frame rate of the original video and the refresh rate of the display, the idle time after the original video completes displaying each frame once within one refresh time of the display is calculated, and the superimposed space of the video to be superimposed includes:

[0010] Calculate the remaining time after each frame of the original video is displayed within one refresh time of the display according to the playback frame rate of the original video and the refresh rate of the display;

[0011] After the spare time is evenly distributed to each frame of the original video, the spare time allocated after each frame of the original video is used as the superimposed space of the video to be superimposed.

[0012] As a preferred solution of the present invention, based on the playback frame rate of the original video and the refresh rate of the display, the idle time after the original video completes displaying each frame once within one refresh time of the display is calculated, and the superimposed space of the video to be superimposed includes:

[0013] Calculate the remaining time after each frame of the original video is displayed within one refresh time of the display based on the playback frame rate of the original video and the refresh rate of the display;

[0014] The spare time is allocated to the last frame of the original video within one refresh of the display as the overlay space for the video to be overlaid.

[0015] As a preferred embodiment of the present invention, the video to be superimposed to provide beneficial stimulation to the human brain is an image of a preset color.

[0016] In a second aspect, in order to solve the above-mentioned problem, the present invention further provides a video signal superimposition device, the device comprising:

[0017] An overlay space determination module is configured to calculate, based on the playback frame rate of the original video and the refresh rate of the display, the remaining time after the original video completes displaying each frame within one refresh time of the display, as the overlay space for the video to be overlaid;

[0018] a module for designing videos to be superimposed, configured to design, based on the superimposed space of the videos to be superimposed and a preset frequency range of videos beneficial to the human brain, a set frequency of the videos to be superimposed and a channel corresponding to the set frequency, thereby obtaining the videos to be superimposed that are beneficial to the human brain;

[0019] The corresponding module is used to correspond the video to be superimposed for beneficial stimulation to the human brain with the original video in time, so that the video to be superimposed for beneficial stimulation to the human brain forms a temporal correspondence with the superimposed space to obtain the superimposed video.

[0020] As a preferred solution of the present invention, the superposition space determination module includes:

[0021] A first idle time calculation unit is configured to calculate, based on the playback frame rate of the original video and the refresh rate of the display, the idle time remaining after each frame of the original video is displayed once within one refresh time of the display;

[0022] The first superimposed space determining unit is configured to evenly distribute the spare time to each frame of the original video, and use the spare time distributed after each frame of the original video as the superimposed space of the video to be superimposed.

[0023] As a preferred solution of the present invention, the superposition space determination module includes:

[0024] A second idle time calculation unit is used to calculate the idle time after the original video completes displaying each frame once within one refresh time of the display according to the playback frame rate of the original video and the refresh rate of the display;

[0025] The second overlay space determining unit is configured to allocate the free time to the last frame of the original video within one refresh of the display as the overlay space for the video to be overlaid.

[0026] As a preferred embodiment of the present invention, the preset video frequency range that is beneficial to stimulating the human brain can inhibit Alzheimer's disease.

[0027] In a third aspect, in order to solve the above problem, the present invention further provides an electronic device, comprising:

[0028] at least one processor; and,

[0029] a memory communicatively connected to the at least one processor; wherein,

[0030] The memory stores instructions that can be executed by the at least one processor. The instructions are executed by the at least one processor to enable the at least one processor to perform the steps of the video signal superimposition method described above.

[0031] In a fourth aspect, in order to solve the above-mentioned problem, the present invention further provides a computer-readable storage medium storing a computer program, which implements the above-mentioned video signal superposition method when executed by a processor.

[0032] The video signal superposition method, device, equipment and storage medium proposed in the present invention calculate the superposition space of the video to be superimposed based on the playback frame rate of the original video and the refresh rate of the display, and then design the video to be superimposed that is beneficial to the human brain based on the superposition space of the video to be superimposed and a preset video frequency range that is beneficial to the human brain; finally, the video to be superimposed that is beneficial to the human brain and the original video are temporally matched, so that the video to be superimposed that is beneficial to the human brain and the superposition space form a temporal correspondence to obtain the superimposed video; the entire video superposition process does not require the use of any video synthesis algorithm, simplifying the development process of video synthesis; and the video that is beneficial to the human brain and the original video are superimposed using different channels so that the two videos do not interfere with each other, that is, the normal playback of the original video is guaranteed, while stimulating the human brain, which not only does not cause visual fatigue to the viewer, but also is beneficial to the viewer's brain. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic flow chart of a video signal superposition method provided by one embodiment of the present invention;

[0034] Figure 2 A schematic diagram of a module of a video signal superimposition device provided by one embodiment of the present invention;

[0035] Figure 3 A schematic diagram of the internal structure of an electronic device for implementing a method for superimposing video signals according to an embodiment of the present invention;

[0036] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0037] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0038] The present invention provides a video signal superposition method. Figure 1 FIG2 is a flow chart of a method for superimposing video signals according to an embodiment of the present invention. The method can be executed by a device, which can be implemented by software and / or hardware.

[0039] In this embodiment, the video signal superposition method includes:

[0040] Step S110: Calculate the remaining time after the original video completes displaying each frame within one refresh time of the display according to the playback frame rate of the original video and the refresh rate of the display, as the overlay space of the video to be overlaid.

[0041] Specifically, the signal frequency of the video corresponds to the refresh rate of the display. Each signal frequency corresponds to one refresh of the display. The refresh rate of each video refresh corresponds to a fixed number of playable video frames. Therefore, as long as the playback frame rate of the original video is known, the idle time after the display corresponding to the video signal is refreshed once and each frame is displayed once can be calculated. For example, if the refresh rate is 120Hz, 120 frames are displayed per second. If the corresponding frame rate of a certain signal of the original video is 60 fps, each frame in the video signal can be played twice within one refresh of the display.

[0042] The processor calculates the idle time after each frame of the original video is displayed once within one refresh of the display based on the obtained playback frame rate of the original video and the refresh frequency of the display. For example, the refresh rate of the display is 60Hz, and the playback frame rate of normal TV programs is 30fps. At this time, after a normal TV program is played once within one refresh of the display, the display can play the frame of the normal TV program after the current display is completed again within the current refresh time. In order to avoid repeatedly displaying the frame of the normal TV program, the idle time at this time is used as the overlay space for the video to be overlaid.

[0043] As an optional embodiment of the present invention, based on the playback frame rate of the original video and the refresh rate of the display, the idle time after the original video completes displaying each frame once within one refresh time of the display is calculated, and the overlay space of the video to be overlaid is calculated as follows:

[0044] Based on the original video's playback frame rate and the monitor's refresh rate, calculate the remaining time after the original video completes displaying each frame within one monitor refresh time.

[0045] After evenly distributing the spare time to each frame of the original video, the spare time allocated after each frame of the original video is used as the superimposed space of the video to be superimposed.

[0046] Specifically, the spare time is evenly distributed after each frame of the original video, and then the spare time allocated after each frame of the original video is used as the superimposed space of the video to be superimposed. At this time, the superimposed video is superimposed after each frame of the original video.

[0047] As an optional embodiment of the present invention, based on the playback frame rate of the original video and the refresh rate of the display, the idle time after the original video completes displaying each frame once within one refresh time of the display is calculated, and the overlay space of the video to be overlaid is calculated as follows:

[0048] Based on the original video's playback frame rate and the monitor's refresh rate, calculate the remaining time after the original video completes displaying each frame within one monitor refresh time.

[0049] The spare time is allocated to the last frame of the original video within one refresh of the display as the overlay space for the video to be overlaid.

[0050] Specifically, the spare time is allocated to the last frame of each original video signal, that is, the superimposed video is added after the last frame corresponding to each video signal.

[0051] Step S120: Design the set frequency of the video to be superimposed and the channel corresponding to the set frequency according to the superimposed space of the video to be superimposed and the preset frequency range of the video that is beneficial to the human brain, and obtain the video to be superimposed that is beneficial to the human brain.

[0052] According to the superimposed space and the preset frequency range of the video that is beneficial to the human brain, the set frequency of the video to be superimposed and the channel corresponding to the set frequency are designed, thereby obtaining the video to be superimposed that is beneficial to the human brain.

[0053] As an optional embodiment of the present invention, the video to be superimposed with beneficial stimulation for the human brain is an image of a preset color, for example, a white screen.

[0054] Step S130: The video to be superimposed that is beneficial to the human brain is temporally aligned with the original video, so that the video to be superimposed that is beneficial to the human brain is temporally aligned with the superimposed space to obtain the superimposed video.

[0055] Specifically, in order to prevent the superimposed video from interfering with the original video, the two are made to use different channels and form a corresponding relationship in time, thereby obtaining the superimposed video.

[0056] like Figure 2 FIG. 1 is a functional module diagram of a video signal superimposing device according to an embodiment of the present invention.

[0057] The video signal superimposition device 200 of the present invention can be installed in an electronic device. Depending on the functionality to be implemented, the video signal superimposition device can include a superimposition space determination module 210, a to-be-superimposed video design module 220, and a corresponding module 230. A module, also referred to as a unit, is a series of computer program segments that can be executed by a processor of an electronic device and that can perform a fixed function, and is stored in the memory of the electronic device.

[0058] In this embodiment, the functions of each module / unit are as follows:

[0059] The overlay space determination module 210 is configured to calculate the remaining time after the original video completes displaying each frame within one refresh time of the display based on the original video playback frame rate and the display refresh rate, as the overlay space for the video to be overlaid;

[0060] The to-be-overlapped video design module 220 is configured to design a set frequency of the to-be-overlapped video and a channel corresponding to the set frequency based on the overlay space of the to-be-overlapped video and a preset frequency range of the video that is beneficial to the human brain, thereby obtaining the to-be-overlapped video that is beneficial to the human brain;

[0061] The corresponding module 230 is used to make the video to be superimposed with beneficial stimulation to the human brain correspond to the original video in time, so that the video to be superimposed with beneficial stimulation to the human brain forms a temporal correspondence with the superimposed space to obtain the superimposed video.

[0062] As an optional embodiment of the present invention, the superposition space determination module 210 includes: a first free time calculation unit and a first superposition space determination unit; wherein,

[0063] The first idle time calculation unit is used to calculate the idle time after the original video completes displaying each frame once within one refresh time of the display according to the playback frame rate of the original video and the refresh rate of the display;

[0064] The first superimposed space determining unit is configured to evenly distribute the spare time after each frame of the original video, and use the spare time distributed after each frame of the original video as the superimposed space of the video to be superimposed.

[0065] As an optional embodiment of the present invention, the superposition space determination module 210 includes: a second free time calculation unit and a second superposition space determination unit; wherein,

[0066] The second idle time calculation unit is used to calculate the idle time after the original video completes displaying each frame once within one refresh time of the display according to the playback frame rate of the original video and the refresh rate of the display;

[0067] The second overlay space determining unit is configured to allocate the spare time to the last frame of the original video within one refresh of the display as the overlay space for the video to be overlaid.

[0068] As an optional embodiment of the present invention, the video to be superimposed that is beneficial to the stimulation of the human brain is an image of a preset color.

[0069] As an optional embodiment of the present invention, presetting a video frequency range that is beneficial to stimulating the human brain can inhibit Alzheimer's disease.

[0070] like Figure 3 FIG. 1 is a schematic structural diagram of an electronic device for implementing a method for superimposing video signals according to an embodiment of the present invention.

[0071] The electronic device 1 may include a processor 10 , a memory 11 , and a bus, and may further include a computer program stored in the memory 11 and executable on the processor 10 , such as a video signal overlay program 12 .

[0072] The memory 11 includes at least one type of readable storage medium, including flash memory, a mobile hard disk, a multimedia card, a card-type memory (e.g., SD or DX memory), a magnetic memory, a magnetic disk, an optical disk, etc. In some embodiments, the memory 11 may be an internal storage unit of the electronic device 1, such as a mobile hard disk of the electronic device 1. In other embodiments, the memory 11 may also be an external storage device of the electronic device 1, such as a plug-in mobile hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash memory card, etc. equipped on the electronic device 1. Furthermore, the memory 11 may include both an internal storage unit of the electronic device 1 and an external storage device. The memory 11 can be used not only to store application software installed in the electronic device 1 and various types of data, such as the code of a video signal overlay program, but also to temporarily store data that has been output or is about to be output.

[0073] In some embodiments, the processor 10 may be comprised of an integrated circuit, such as a single packaged integrated circuit or multiple packaged integrated circuits with the same or different functions, including one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and a combination of various control chips. The processor 10 is the control core (Control Unit) of the electronic device, connecting the various components of the electronic device using various interfaces and circuits. It executes programs or modules (such as a video signal overlay program) stored in the memory 11 and accesses data stored in the memory 11 to perform various functions and process data.

[0074] The bus may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus may be divided into an address bus, a data bus, a control bus, etc. The bus is configured to enable connection and communication between the memory 11 and at least one processor 10, etc.

[0075] Figure 3 Only the electronic device with components is shown, and it can be understood by those skilled in the art that Figure 3 The structure shown does not constitute a limitation on the electronic device 1 , and may include fewer or more components than shown in the figure, or combine certain components, or arrange the components differently.

[0076] For example, although not shown, the electronic device 1 may further include a power supply (e.g., a battery) to power various components. Preferably, the power supply may be logically connected to the at least one processor 10 via a power management device, thereby enabling functions such as charge management, discharge management, and power consumption management via the power management device. The power supply may further include any components such as one or more DC or AC power supplies, a recharging device, a power failure detection circuit, a power converter or inverter, and a power status indicator. The electronic device 1 may also include various sensors, Bluetooth modules, Wi-Fi modules, etc., which are not further described here.

[0077] Furthermore, the electronic device 1 may also include a network interface. Optionally, the network interface may include a wired interface and / or a wireless interface (such as a WI-FI interface, a Bluetooth interface, etc.), which is generally used to establish a communication connection between the electronic device 1 and other electronic devices.

[0078] Optionally, the electronic device 1 may further include a user interface, which may be a display or an input unit (such as a keyboard). Optionally, the user interface may also be a standard wired interface or a wireless interface. Optionally, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, or an OLED (Organic Light-Emitting Diode) touchscreen. The display may also be appropriately referred to as a display screen or a display unit, and is used to display information processed by the electronic device 1 and to display a visual user interface.

[0079] It should be understood that the embodiment is for illustration only and the scope of the patent application is not limited to this structure.

[0080] The video signal overlay program 12 stored in the memory 11 of the electronic device 1 is a combination of multiple instructions. When executed in the processor 10, the following can be achieved:

[0081] Based on the original video's frame rate and the display's refresh rate, calculate the remaining time after the original video completes displaying each frame within the display's refresh time, and use this as the overlay space for the video to be overlaid.

[0082] According to the superposition space of the video to be superimposed and the preset frequency range of the video that is beneficial to the human brain, the set frequency of the video to be superimposed and the channel corresponding to the set frequency are designed to obtain the video to be superimposed that is beneficial to the human brain;

[0083] The video to be superimposed that is beneficial to the human brain and the original video are made to correspond in time, so that the video to be superimposed that is beneficial to the human brain and the superimposed space form a temporal correspondence to obtain the superimposed video.

[0084] Specifically, the specific implementation method of the processor 10 for the above instructions can refer to Figure 1 The description of the relevant steps in the corresponding embodiments will not be repeated here.

[0085] Furthermore, if the modules / units integrated into the electronic device 1 are implemented as software functional units and sold or used as independent products, they may be stored in a computer-readable storage medium. The computer-readable medium may include any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a mobile hard drive, a magnetic disk, an optical disk, a computer memory, or a read-only memory (ROM).

[0086] In the several embodiments provided by the present invention, it should be understood that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the module division is merely a logical function division, and other division methods may be used in actual implementation.

[0087] The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical units, that is, they may be located in one place or distributed across multiple network elements. Some or all of the modules may be selected to achieve the purpose of the solution of this embodiment according to actual needs.

[0088] In addition, the functional modules in various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or hardware plus software functional modules.

[0089] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0090] Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and all changes that come within the meaning and range of equivalents of the claims are intended to be embraced therein. Any reference to a figure in a claim should not be construed as limiting the claim to which it relates.

[0091] Blockchain, as used in this article, refers to a novel application model for computer technologies such as distributed data storage, peer-to-peer transmission, consensus mechanisms, and encryption algorithms. Blockchain is essentially a decentralized database, a series of data blocks generated using cryptographic methods. Each block contains information about a batch of online transactions, used to verify the validity of this information (to prevent counterfeiting) and generate the next block. Blockchain can include the underlying blockchain platform, the platform product service layer, and the application service layer.

[0092] Furthermore, it is clear that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices recited in a system claim may also be implemented by a single unit or device through software or hardware. Second-order terms are used to indicate names and do not imply any particular order.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A video signal superposition method, applied to an electronic device, characterized in that: The method comprises: According to the playback frame rate of the original video and the refresh rate of the display, the idle time after the original video completes displaying each frame within one refresh time of the display is calculated as the overlay space of the video to be overlaid; According to the superposition space of the video to be superimposed and the preset frequency range of the video that is beneficial to the human brain, a set frequency of the video to be superimposed and a channel corresponding to the set frequency are designed to obtain the video to be superimposed that is beneficial to the human brain; The video to be superimposed that is beneficial to the human brain is temporally aligned with the original video, so that the video to be superimposed that is beneficial to the human brain and the superimposed space form a temporal correspondence, thereby obtaining a superimposed video; The calculation of the remaining time after each frame of the original video is displayed within one refresh time of the display according to the playback frame rate of the original video and the refresh rate of the display as the superimposed space of the video to be superimposed includes: Calculate the remaining time after each frame of the original video is displayed within one refresh time of the display according to the playback frame rate of the original video and the refresh rate of the display; Evenly distributing the spare time to each frame of the original video, and using the spare time distributed after each frame of the original video as the superimposed space of the video to be superimposed; The calculation of the remaining time after each frame of the original video is displayed within one refresh time of the display according to the playback frame rate of the original video and the refresh rate of the display as the superimposed space of the video to be superimposed includes: Calculate the remaining time after each frame of the original video is displayed within one refresh time of the display according to the playback frame rate of the original video and the refresh rate of the display; Allocating the free time to the last frame of the original video within one refresh of the display as the overlay space for the video to be overlaid; The video to be superimposed that is beneficial to the human brain is an image of a preset color; The preset video frequency range that is beneficial to stimulating the human brain can inhibit Alzheimer's disease.

2. A video signal superposition device, characterized in that: The device comprises: An overlay space determination module is configured to calculate, based on the playback frame rate of the original video and the refresh rate of the display, the remaining time after the original video completes displaying each frame within one refresh time of the display, as the overlay space for the video to be overlaid; a module for designing videos to be superimposed, configured to design, based on the superimposed space of the videos to be superimposed and a preset frequency range of videos beneficial to the human brain, a set frequency of the videos to be superimposed and a channel corresponding to the set frequency, thereby obtaining the videos to be superimposed that are beneficial to the human brain; a corresponding module, configured to correspond the video to be superimposed with the beneficial stimulation to the human brain with the original video in time, so that the video to be superimposed with the beneficial stimulation to the human brain forms a temporal correspondence with the superimposed space, thereby obtaining a superimposed video; A first idle time calculation unit is configured to calculate, based on the playback frame rate of the original video and the refresh rate of the display, the idle time remaining after each frame of the original video is displayed once within one refresh time of the display; a first superimposition space determining unit, configured to evenly distribute the spare time after each frame of the original video, and use the spare time distributed after each frame of the original video as the superimposition space of the video to be superimposed; A second idle time calculation unit is used to calculate the idle time after the original video completes displaying each frame once within one refresh time of the display according to the playback frame rate of the original video and the refresh rate of the display; A second superimposition space determining unit is configured to allocate the free time to the last frame of the original video within one refresh of the display as the superimposition space for the video to be superimposed; The preset video frequency range that is beneficial to stimulating the human brain can inhibit Alzheimer's disease.

3. An electronic device, characterized in that: The electronic device comprises: at least one processor; and, a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the steps of the video signal superimposition method as claimed in claim 1.

4. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the video signal superimposition method as claimed in claim 1 is implemented.

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