CN112584207A

CN112584207A - Video signal processing method, system, equipment and storage medium

Info

Publication number: CN112584207A
Application number: CN201910943995.8A
Authority: CN
Inventors: 陈俊伟
Original assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd; Guangzhou Shirui Electronics Co Ltd
Current assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd; Guangzhou Shirui Electronics Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2021-03-30
Anticipated expiration: 2039-09-30
Also published as: CN112584207B

Abstract

The embodiment of the invention discloses a method, a system, equipment and a storage medium for processing video signals, wherein the method comprises the following steps: the main display controller receives an external video signal transmitted by the electronic equipment; the main display controller generates a first sub video signal based on the external video signal; the main display controller transmits the first sub video signal to the signal converter, and the signal converter is used for transmitting the first sub video signal to the main screen for playing, converting the first sub video signal into an external video signal and transmitting the external video signal to the signal switcher; the main display controller transmits the first enabling signal to the signal switcher to control the signal switcher to transmit the external video signal to the auxiliary display controller, and the auxiliary display controller is used for converting the external video signal into a first sub video signal and transmitting the first sub video signal to the auxiliary screen for playing. The embodiment of the invention improves the association between the main display equipment and the auxiliary display equipment and can increase the diversity of operation.

Description

Video signal processing method, system, equipment and storage medium

Technical Field

Embodiments of the present invention relate to educational technology, and in particular, to a method, system, device, and storage medium for processing a video signal.

Background

In different occasions such as education, work, life, etc., two machines are often used as multimedia equipment to assist users in activities such as teaching and speech.

For example, in some classrooms, a machine is used as a multimedia device to be combined with a blackboard for teaching.

However, one machine has a limited screen size, and in a scene where a larger screen is required to display teaching contents, some classrooms use two machines placed side by side to extend the display area.

The two machines are only spliced together physically, the two machines still work independently, the operation diversity is less, and activities such as teaching and speech are limited.

Disclosure of Invention

The embodiment of the invention provides a video signal processing method, a video signal processing system, video signal processing equipment and a storage medium, and aims to solve the problem that two machines are spliced together and have less diversity of operation.

In a first aspect, an embodiment of the present invention provides a method for processing a video signal, in which a main display device is connected to a sub-display device and an electronic device, respectively, and a controller, a main display controller, a signal switcher, a signal converter, and a main screen are disposed in the main display device; the method comprises the following steps that a secondary display controller and a secondary screen are arranged in the secondary display equipment, and the method comprises the following steps:

the main display controller receives an external video signal transmitted by the electronic equipment;

the main display controller generates a first sub video signal based on the external video signal, wherein the first sub video signal is a screen driving signal matched with the main screen;

the main display controller transmits the first sub video signal to the signal converter, and the signal converter is used for transmitting the first sub video signal to a main screen for playing; the signal switcher is used for converting the first sub video signal into the external video signal and transmitting the external video signal to the signal switcher;

the main display controller transmits a first enabling signal to the signal switcher to control the signal switcher to transmit the external video signal to the auxiliary display controller, and the auxiliary display controller is used for converting the external video signal into a first sub video signal and transmitting the first sub video signal to the auxiliary screen for playing.

Further, the main display device is provided with a data port, and the electronic device is connected to the data port;

or,

the electronic equipment is provided with a data port, a screen transmission device is connected to the data port, and the main display device is in wireless connection with the screen transmission device.

Further, the method also comprises the following steps:

the main display controller receives touch operation acting on the main display equipment and/or receives touch operation acting on the auxiliary display equipment and sent by the auxiliary display controller;

and the main display controller transmits the touch operation to the electronic equipment, and the electronic equipment is used for operating the multimedia file to which the external video signal belongs according to the touch operation.

Further, main display controller is based on external video signal generates first minute video signal, includes:

the main display controller receives annotation operation acting on the main display equipment;

the main display controller generates annotation information on the external video signal according to the annotation operation;

and carrying out signal conversion processing on the external video signal with the annotation information to obtain a first sub video signal matched with the main screen.

the main display controller receives annotation operation which is sent by the auxiliary display controller and acts on the auxiliary display equipment;

Further, the method further comprises:

the controller generates a main video signal;

the controller transmits the main video signal to the signal switcher;

the main display controller transmits a second enabling signal to the signal switcher to control the signal switcher to transmit the main video signal to the auxiliary display controller, and the auxiliary display controller is used for converting the main video signal into a second sub video signal and transmitting the second sub video signal to the auxiliary screen for playing.

In a second aspect, an embodiment of the present invention further provides a main display device, where the main display device is connected to a secondary display device and an electronic device, and the main display device is provided with a controller, a main display controller, a signal switcher, a signal converter, and a main screen; the auxiliary display device is provided with an auxiliary display controller and an auxiliary screen;

the main display controller is used for:

receiving an external video signal transmitted by the electronic equipment;

generating a first sub video signal based on the external video signal, wherein the first sub video signal is a screen driving signal matched with the main screen;

transmitting the first component video signal to the signal converter, wherein the signal converter is used for transmitting the first component video signal to a main screen for playing; the signal switcher is used for converting the first sub video signal into the external video signal and transmitting the external video signal to the signal switcher;

transmitting a first enabling signal to the signal switcher to control the signal switcher to transmit the external video signal to the auxiliary display controller, wherein the auxiliary display controller is used for converting the external video signal into a first sub video signal and transmitting the first sub video signal to the auxiliary screen for playing.

In a third aspect, an embodiment of the present invention further provides a system for processing a video signal, where the system includes a main display device and a sub display device connected to each other, the main display device is connected to an electronic device, and the main display device is provided with a controller, a main display controller, a signal switcher, a signal converter, and a main screen; the auxiliary display equipment is provided with an auxiliary display controller and an auxiliary screen, and the controller is also connected with the main display controller;

the main display controller is used for:

receiving an external video signal transmitted by the electronic equipment;

transmitting a first enabling signal to the signal switcher so as to control the signal switcher to transmit the external video signal to the secondary display controller;

and the auxiliary display controller is used for converting the external video signal into a first sub video signal and transmitting the first sub video signal to the auxiliary screen for playing.

In a fourth aspect, an embodiment of the present invention further provides a computer device, where the computer device includes:

one or more processors;

a memory for storing one or more programs;

when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the method for processing a video signal as described in the first aspect.

In a fifth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the video signal processing method according to the first aspect.

In this embodiment, the main display controller receives an external video signal transmitted by the electronic device; the main display controller generates a first sub video signal based on the external video signal, and the first sub video signal is a screen driving signal matched with the main screen; the main display controller transmits the first sub video signal to the signal converter, on one hand, the signal converter is used for transmitting the first sub video signal to the main screen for playing, on the other hand, the signal converter is also used for converting the first sub video signal into an external video signal and transmitting the external video signal to the signal switcher; the main display controller transmits a first enabling signal to the signal switcher, the control signal switcher transmits an external video signal to the auxiliary display controller, the auxiliary display controller is used for converting the external video signal into a first sub video signal, the first sub video signal is transmitted to the auxiliary screen to be played, the main display controller and the auxiliary display controller are coordinated by the controller to play the video signal in a unified manner, the association between the main display equipment and the auxiliary display equipment is improved, the diversity of the operation can be increased, the teaching is convenient to be carried out in different occasions such as education, work, and life by matching users, and activities such as speech.

Drawings

Fig. 1 is a schematic structural diagram of a main display device and an auxiliary display device according to an embodiment of the present invention;

fig. 2 is a flowchart of a method for processing a video signal according to an embodiment of the present invention;

fig. 3 is a flowchart of a video signal processing method according to a second embodiment of the present invention;

fig. 4 is a schematic structural diagram of a main display device according to a third embodiment of the present invention;

fig. 5 is a schematic structural diagram of a video signal processing system according to a fourth embodiment of the present invention

Fig. 6 is a schematic structural diagram of a computer device according to a fifth embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Fig. 1 is a schematic structural diagram of a main display device and an auxiliary display device according to an embodiment of the present invention.

In the present embodiment, the main display device 10 has a data port, the sub display device 20 has a data port, and a data line is accessible between the data port of the main display device 10 and the data port of the sub display device 20, so as to connect the main display device 10 and the sub display device 20.

The data port of the primary display device 10 and the data port of the secondary display device 20 may be set with various types of pins such as a video pin, a data pin, a network pin, etc. according to service requirements.

In which, the video pins may be used to transmit video signals, and with an HDMI (High Definition Multimedia Interface) signal as an example of a video signal, a pair of video pins may be used to transmit an HDMI clock signal, a pair of video signals may be used to transmit an HDMI red signal, a pair of video signals may be used to transmit an HDMI green signal, and a pair of video signals may be used to transmit an HDMI blue signal.

The data pins may be used to transmit Serial signals, such as USB (Universal Serial BUS) 3.0 signals, USB2.0 signals, including signals of camera, MIC (microphone), TOUCH up (TOUCH operation), and the like.

Network pins may be used to transmit network signals, such as gigabit network signals, for network communications.

In general, as shown in fig. 1, the main display device 10 may specifically include the following structure: the controller 110, the main display controller 120 that can convert a video signal into a screen driving signal, the signal converter 130 that can convert a screen driving signal into a video signal, the signal switch 140, the main screen 150, and the like.

The controller 110 belongs to a higher performance computing module.

For example, the controller 110 may be an Android module, that is, an Android system may be installed, and components such as a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), a RAM (random access Memory), a ROM (Read-Only Memory), and the like are configured, for example, for the Android7.0 version, the CPU is a dual-core a72 and a quad-core a53, the GPU is a Mali T860, the RAM is 4GB, the ROM is 32GB, and the like.

For another example, the controller 110 may be a PC (personal computer) module configured with components such as a CPU, a GPU, a memory, and a hard disk, for example, for a plug-in Intel Core series modular computer, the CPU is Intel Core i5/i7, the GPU is kernel HD Graphics, the memory is DDR 48G/16G, and the hard disk is 128G/256G.

The main Display controller 120 belongs to Display Controllers (Display Controllers), and has a low operation performance, such as 811 SOC (System on Chip), and is responsible for receiving video signals from a serial port of a computer, placing the video signals into a frame memory, and generating serial Display data and a scanning control timing sequence, i.e., a screen driving signal, required by a screen in a partition driving manner. Illustratively, the video signal is a High Definition Multimedia Interface (HDMI) signal, and the screen driving signal is a video serial Interface (V-By-One, VBO) signal or a Low Voltage Differential Signaling (LVDS) signal. The VBO signal has an advantage that a Clock (CLK) is superimposed on an original data signal of the video signal and transmitted in a common mode. Compared with HDMI signals, the method can omit CLK signal lines, and has low requirements on transmission wires due to the fact that the transmission distance is shorter, and the common five-type wires are enough. The LVDS interface performs data transmission by differential, i.e., low voltage differential signal transmission, on two printed circuit board traces or a pair of balanced cables with a very low voltage swing (about 350 mV). By adopting the LVDS interface, signals can be transmitted on a differential printed circuit board or a balanced cable at the speed of hundreds of Mbit/s, and low noise and low power consumption are realized due to the adoption of a low-voltage and low-current driving mode. Generally, a display screen controller is internally provided with circuit logic for converting a video signal into a screen driving signal.

By using the cooperation between the controller 110 and the main display controller 120, the signal processing with high requirement on the operation performance, such as the annotation function, can be configured on the controller 110 with higher operation performance. Moreover, the cost of modifying the main display controller 120 itself is not increased.

Further, the master display controller 120 is provided with a first video input port 121, a second video input port 122, a signal control port 123, and a master video output port 124.

The first video input port 121 is used for connecting with an electronic device to input a video signal, wherein the video signal is from the electronic device 30. Illustratively, the video signal of the electronic device 30 may comprise a graphical user interface of the electronic device 30. The electronic device 30 may be a mobile phone, a computer, a tablet, a screen transmission device, or other terminals.

The second video input port 122 is connected to the controller 110 for inputting video signals from the controller 110. Illustratively, the video signal of the controller 110 may include a graphical user interface of an operating system running on top of the controller 110.

The first video input port 121 may expose the housing of the main display device 10, serve as a pin in the data port, connect with the electronic device 30, and input a video signal of the electronic device 30 to the main display device 10.

The signal converter 130 belongs to a converter, and can receive a driving signal, and convert the driving signal into a first signal and a second signal for outputting, where the first signal is a video signal, and the second signal is a screen driving signal. For the main display device shown in fig. 1, the signal converter 130 has an input port 131, a first output port 132, and a second output port 133, as shown in fig. 1.

The input port 131 is connected to the main video output port 124 for inputting a screen driving signal.

The first output port 132 is used for outputting a video signal.

The second output port 133 is connected to the main screen 150 for outputting a screen driving signal.

That is, specifically, the signal converter 130 is configured to convert the screen driving signal input to the input port 131 into a first signal and a second signal, where the first signal is a video signal and the second signal is a screen driving signal, and the first signal and the second signal are output from the first output port 132 and the second output port 133, respectively.

The signal switch 140 belongs to a switch (switch), and can receive at least two video signals, which can be HDMI signals, and output one of the video signals. For the main display apparatus shown in fig. 1, as shown in fig. 1, the signal switcher 140 includes a first signal input port 141, a second signal input port 142, a signal output port 143, and a control port 144.

The first signal input port 141 is connected to the first output port 132 for inputting a video signal from the video signal of the signal converter 130; the video signal of the signal converter 130 is converted from the screen driving signal output by the main display controller 120; the screen driving signal outputted by the main display controller 120 may be converted by the main display controller 120 according to the video signal inputted from the electronic device 30, or the screen driving signal outputted by the main display controller 120 may be converted by the main display controller 120 according to the video signal inputted from the controller 110, and the main display controller 120 may select the screen driving signal.

The second signal input port 142 is connected to the controller 110 for inputting a video signal from the controller 110.

The control port 144 is connected to the signal control port 123 for receiving an enable signal.

The signal output port 143 is configured to output a video signal when the control port 144 receives the enable signal.

The signal output port 143 may expose the housing of the main display device 10, serve as a pin in the data port, be connected to the sub display device 20, and input the video signal output by the controller 110 or output by the signal converter 130 to the sub display device 20.

For example, when the main display 120 transmits a low-level signal as an enable signal to the signal switch 140, the signal switch 140 outputs a video signal transmitted by the signal converter 130.

When the main display controller 120 transmits the high-level signal as an enable signal to the signal switch 140, the signal switch 140 outputs the video signal transmitted by the controller 110.

In particular, the enable signal may include a first enable signal and a second enable signal. When the control port 144 of the signal switch 140 receives a first enable signal, such as a low-level signal, the signal output port 143 outputs a video signal from the first signal input port 141; when the control port 144 of the signal switch 140 receives a second enable signal, such as a high-level signal, the signal output port 143 outputs the video signal from the second signal input port 142.

That is, it is possible to control which video signal is output by inputting an enable signal to the control port 144 of the signal switch 140. It should be noted that, among others, the video signal of the first signal input port 141, the video signal from the signal converter 130; the video signal of the signal converter 130 is converted from the screen driving signal output by the main display controller 120; the driving signal outputted from the master 120 is converted from the master 120 according to the video signal inputted from the electronic device 30, or the master 120 is converted from the video signal inputted from the controller 110. That is, when the control port 144 of the signal switch 140 receives the first enable signal, it may achieve an effect of outputting the video signal of the electronic device 30 or the video signal of the controller 110 to another display device, such as the sub-display device 20.

As shown in fig. 1, the secondary display device 20 may include a secondary display 210 that may convert a video signal into a screen driving signal, and a secondary screen 220. The sub display controller 210 is connected to the data interface of the main display device 10, and is configured to input a video signal; the sub screen 220 is connected to the sub display controller 210, and is used for inputting a screen driving signal.

The sub Display controller 210 belongs to Display Controllers (Display Controllers), has low operation performance, such as 811 SOC, and is responsible for receiving video signals from a serial port of a computer, placing the video signals into a frame memory, and generating serial Display data and a scanning control timing sequence, i.e., a screen driving signal, required by a screen in a partition driving manner. Illustratively, the video signal is a High Definition Multimedia Interface (HDMI) signal, and the screen driving signal is a video serial Interface (V-By-One, VBO) signal or a Low Voltage Differential Signaling (LVDS) signal. The VBO signal has an advantage that a Clock (CLK) is superimposed on an original data signal of the video signal and transmitted in a common mode. Compared with HDMI signals, the method can omit CLK signal lines, and has low requirements on transmission wires due to the fact that the transmission distance is shorter, and the common five-type wires are enough. The LVDS interface performs data transmission by differential, i.e., low voltage differential signal transmission, on two printed circuit board traces or a pair of balanced cables with a very low voltage swing (about 350 mV). By adopting the LVDS interface, signals can be transmitted on a differential printed circuit board or a balanced cable at the speed of hundreds of Mbit/s, and low noise and low power consumption are realized due to the adoption of a low-voltage and low-current driving mode. Generally, a display screen controller is internally provided with circuit logic for converting a video signal into a screen driving signal.

The hardware part of the intelligent interactive flat panel is composed of a screen (such as a main screen and a secondary screen), an intelligent processing system (including display controllers (such as a main display controller and a secondary display controller), or a controller and a display controller (such as a main display controller and a secondary display controller)), and the like, and is combined together by an integral structural member and is also supported by a special software system, wherein the screen comprises a display screen and a backlight assembly, and the display screen comprises a transparent electric conduction layer, a liquid crystal layer and the like.

The display screen, in the embodiments of the present specification, refers to a touch screen, and a touch panel, and is an inductive liquid crystal display device, when a graphical button on the screen is touched, the tactile feedback system on the screen can drive various connection devices according to a pre-programmed program, so as to replace a mechanical button panel, and create a vivid video effect by using a liquid crystal display screen. Touch screens are distinguished from technical principles and can be divided into five basic categories; a vector pressure sensing technology touch screen, a resistance technology touch screen, a capacitance technology touch screen, an infrared technology touch screen, and a surface acoustic wave technology touch screen. According to the working principle of the touch screen and the medium for transmitting information, the touch screen can be divided into four categories: resistive, capacitive, infrared, and surface acoustic wave.

When a user touches the screen with a finger or a pen, the point coordinates are positioned, so that the control of the intelligent processing system is realized, and then different functional applications are realized along with the built-in software of the intelligent processing system.

The screen and the large screen mentioned in the embodiment of the invention both refer to the display screen of the intelligent interactive flat panel; the intelligent interaction panel displays data such as a certain interface and annotation information, and the data refers to the data such as the interface and the annotation information displayed on a display screen of the intelligent interaction panel.

Further, the main display device 10 may further include: a routing module (not shown) that can receive an access signal when the first video input port 121 receives a video signal.

The routing module includes: a first network port (not shown), and a second network port (not shown).

The first network port is connected to the main display controller 120, and is configured to input an access signal, where the access signal is generated when the main display controller 120 detects that the electronic device 30 is accessed, and is sent to the routing module.

The second network port is connected to the slave display controller 210 for outputting an access signal. Further, the sub display controller 210 may convert the video signal received from the main display device 10 into a driving signal according to the access signal, and send the driving signal to the sub screen 220, so as to drive the sub screen 220 to display the video signal corresponding to the driving signal.

Example one

Fig. 2 is a flowchart of a video signal processing method according to an embodiment of the present invention, which further increases processing operations for switching video signals of display electronic devices based on the foregoing embodiment, and the method specifically includes the following steps:

s201, the main display controller receives an external video signal transmitted by the electronic equipment.

In this embodiment, the main display controller keeps being connected to an electronic device, such as a personal computer, a notebook computer, and the like, the electronic device has a multimedia file (such as a courseware), invokes an application adapted to the format of the multimedia file, and opens the multimedia file, at this time, the multimedia file is displayed on the desktop, and desktop data is converted into a video signal, such as an HDMI signal, so as to generate an external video signal, that is, the external video signal is used for displaying the multimedia file.

In one case, the main display device and the electronic device are connected by a wire.

Furthermore, the main display device is provided with a data port, the electronic device is also provided with a data port, and a data line can be accessed between the data port of the main display device and the data port of the electronic device, so that the electronic device can be accessed to the data port.

The data port of the main display device and the data port of the electronic device can be provided with various types of pins such as video pins, data pins, network pins and the like according to business requirements.

The video pins may be used to transmit video signals, and the HDMI signal is taken as an example of a video signal, and a pair of video pins may be used to transmit an HDMI clock signal, a pair of video signals may be used to transmit an HDMI red signal, a pair of video signals may be used to transmit an HDMI green signal, and a pair of video signals may be used to transmit an HDMI blue signal.

The data pins may be used to transmit serial signals, such as USB3.0 signals, USB2.0 signals, including signals of camera, MIC (microphone), TOUCH, etc.

In another case, the electronic device has a data port, a screen transfer device is connected to the data port, and the main display device is wirelessly connected to the screen transfer device.

Further, the touch screen device includes, but is not limited to, a form of USB Dongle (USB Dongle), and the like, and includes, but is not limited to, a transmission interface, a wireless communication chip, an input unit, an output unit, a memory, a processor, and the like.

The transmission interface is an interface for taking the screen transmission equipment as an external device and accessing other equipment (such as electronic equipment). For example, USB interfaces (including but not limited to Type A, Type B, Type C), and the like.

The wireless communication chip can be used for wireless connection, including but not limited to a Wi-Fi chip, a bluetooth chip, etc., wherein the Wi-Fi chip can apply a 2.4G band, a 5G band, etc., the wireless communication chip belongs to a short-distance wireless transmission technology, after the screen transmission device is paired with the main display device, a wireless connection can be established with the main display device through the wireless communication chip, the screen transmission device can receive data (e.g., touch data, etc.) from the main display device through the wireless connection, and input data (e.g., screen data, audio data, etc.) into the main display device.

The pairing may be performed by authenticating the main display device with the screen transmission device, and writing information of the wireless access point of the main display device into the screen transmission device.

The input unit may be used to generate key signal inputs related to user settings and function control. Specifically, the input unit may include one or more of function keys (e.g., a control for controlling to start touch-up, a control for controlling to pause touch-up, a control for controlling to stop touch-up), a touch panel, a joystick, and the like.

The output unit may be used to output the status of the screen, for example, screen being transmitted, screen being paused, screen not being transmitted, etc., and specifically, the output unit may include an indicator light, etc.

The memory may be used to store software programs as well as various data. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an application program (e.g., pairing, transmitting screen data, audio data, touch data, etc.) required for at least one function, and the like; the storage data area may store data (such as pairing data, operation identification bits, etc.) created according to the use of the screen, and the like. Further, the memory may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The Processor is a control center of the screen transmission device, and includes but is not limited to an MPU (Micro Processor Unit, microprocessor), and connects various parts of the entire screen transmission device by using various interfaces and lines, and performs various functions and processes of the screen transmission device by running or executing software programs and/or modules stored in the memory and calling data stored in the memory, thereby performing overall monitoring of the screen transmission device.

The screen transmission client side and the screen transmission server side follow a screen transmission protocol, and screen transmission operation is executed between the electronic equipment and the main display equipment through the screen transmission equipment.

In this embodiment, the electronic device transmits the external video signal thereof to the main display device, and the main display controller receives the external video signal.

S202, the main display controller generates a first sub video signal based on the external video signal, and the first sub video signal is a screen driving signal matched with the main screen.

Specifically, in this embodiment, after receiving the external video signal, the main display controller may process the external video signal according to a predetermined protocol, for example, compress the external video signal to a uniform resolution, cut, add a watermark, add annotation information, and the like, and further convert the external video signal into a screen driving signal, thereby generating a first sub video signal.

In this embodiment, the comment information is added as an example.

If the main display device and the auxiliary display device enter the annotation mode, the annotation operation can be received, annotation information is generated on the external video signals aiming at the multimedia file, the external video signals with the annotation information are subjected to signal conversion processing, and first sub video signals matched with the main screen or the auxiliary screen are obtained.

In one way of entering the annotation mode, the primary display device has a primary operating region and a non-primary operating region.

The main operation area is an area designated in a UI (User Interface) of the main display device, such as a sidebar, and may be used to trigger an operation designated in the main display device, such as adding annotation information.

The non-main operation area is an area except the main operation area in the UI of the main display device, and can be used for operating a multimedia file to which a video signal (such as an external video signal) displayed by the non-main operation area belongs in a non-annotation mode.

In this manner, a primary annotation control is displayed in the primary operation area, the primary display-controller receives a touch operation that acts on the primary annotation control, and the primary display-controller enters an annotation mode in response to the touch operation, and sends an annotation notification to the secondary display-controller to notify the secondary display-controller of entering the annotation mode.

In another way of entering the annotation mode, the secondary display device has a secondary operation area and a non-secondary operation area.

The secondary operation area is an area designated in the UI of the secondary display device, such as a sidebar, and can be used for triggering operations designated in the primary display device, such as adding annotation information.

The non-auxiliary operation area is an area except the auxiliary operation area in the UI of the auxiliary display equipment, and can be used for operating the multimedia file to which the video signal (including the external video signal) displayed by the auxiliary display equipment belongs in a non-annotation mode.

In this way, a secondary annotation control is displayed in the secondary operation area, the primary display controller receives an annotation notification sent by the secondary display controller when entering the annotation mode, and the primary display controller enters the annotation mode in response to the annotation notification.

And the auxiliary display controller enters the annotation mode when receiving the touch operation acted on the auxiliary annotation control.

In the annotation mode, a user can operate by using a finger or a touch pen in a touch manner, so that the main display controller receives annotation operation. Or, the user can also operate in a keying manner through an external device connected with the main display device or the auxiliary display device, so that the main display controller receives the annotation operation. The external device includes, but is not limited to, a mouse, etc.

The present embodiment is preferably described by taking a touch manner as an example, and it can be understood that all annotation operations occurring in the present embodiment can be performed by using a touch manner or a key manner, and are described by taking a touch manner as an example.

In the main display device, the main display controller screen shields the controller from touch operation on the main display device.

At this moment, main display controller can receive the touch-control operation that acts on main display device, as the annotation operation, according to this annotation operation, generates the annotation information on external video signal, carries out signal conversion processing with the external video signal who has the annotation information, obtains the first minute video signal with main screen adaptation.

In the sub display device, on the one hand, the sub display controller shields a touch operation acting on the sub display device.

On the other hand, the auxiliary display controller screen shields the controller from touch operation acting on the auxiliary display equipment.

At this moment, the main display controller can receive the touch operation which is sent by the auxiliary display controller and acts on the auxiliary display equipment, the touch operation is used as the annotation operation, the annotation information is generated on the external video signal according to the annotation operation, the external video signal with the annotation information is subjected to signal conversion processing, and the first sub video signal matched with the main screen is obtained.

Wherein, the matching of the first sub video signal with the main screen means that the main screen can play the first sub video signal.

Of course, in this embodiment, the main screen and the sub-screen may adopt the same specification of driving signals. The main display controller or the auxiliary display controller can convert the input video signal to obtain the driving signal of the same specification and the driving signal suitable for the main screen and the auxiliary screen.

S203, the main display controller transmits the first sub video signal to the signal converter, and the signal converter is used for transmitting the first sub video signal to a main screen for playing; the signal switcher is used for converting the first sub video signal into the external video signal and transmitting the external video signal to the signal switcher;

in this embodiment, the signal converter belongs to a converter, and may receive a driving signal, and convert the driving signal into a first signal and a second signal for outputting, where the first signal is a video signal, and the second signal is a screen driving signal. That is, after the first partial video signal is processed by the signal converter, the signal converter may output the original first partial video signal at one path and output the external video signal restored according to the first partial video signal at the other path.

The first video signal output by the signal converter can be directly transmitted to the main screen for playing. Further, the main display controller can be externally connected with a video signal and is arranged in a frame memory, serial display data and a scanning control time sequence which are required by a main screen are generated according to the external video signal in a partition driving mode, namely, a first sub video signal is transmitted to the main screen through the signal converter, and the main screen is played according to the first sub video signal (the serial display data and the scanning control time sequence), so that a multimedia file is displayed on the main screen.

And transmitting the external video signal output by the signal converter to the signal switcher.

S204, the main display controller transmits a first enabling signal to the signal switcher to control the signal switcher to transmit the external video signal to the auxiliary display controller, and the auxiliary display controller is used for converting the external video signal into a first sub video signal and transmitting the first sub video signal to the auxiliary screen for playing.

In this embodiment, the main display controller outputs the first sub-video signal to the signal switch, and at the same time, the main display controller generates the first enable signal and transmits the first enable signal to the signal switch.

The signal switcher responds to the first enabling signal and outputs an external video signal from the signal converter, namely, the external video signal is output to the auxiliary display controller, and the auxiliary display controller converts the external video signal into a first sub video signal and transmits the first sub video signal to the auxiliary screen for playing. Similarly, the first component video signal is matched with the sub-screen and can be played in the sub-screen.

Further, the sub display controller receives an external video signal from the main display device, puts the external video signal into the frame memory, generates serial display data and a scanning control time sequence required by a screen according to the external video signal in a partition driving mode, namely a first sub video signal, and plays the screen according to the first sub video signal (the serial display data and the scanning control time sequence), thereby displaying the multimedia file on the screen.

In this embodiment, the main display controller receives an external video signal transmitted by the electronic device; the main display controller generates a first sub video signal based on the external video signal, and the first sub video signal is a screen driving signal matched with the main screen; the main display controller transmits the first sub video signal to the signal converter, on one hand, the signal converter is used for transmitting the first sub video signal to the main screen for playing, on the other hand, the signal converter is also used for converting the first sub video signal into an external video signal and transmitting the external video signal to the signal switcher; the main display controller transmits the first enabling signal to the signal switcher to control the signal switcher to transmit the external video signal to the auxiliary display controller, the auxiliary display controller is used for converting the external video signal into a first sub video signal and transmitting the first sub video signal to the auxiliary screen to be played, the main display controller coordinates the main display device and the auxiliary display device to play the sub video signal, and the sub video signal is accessed into one electronic device without independently accessing different electronic devices into two machines, so that the operation simplicity is greatly improved, moreover, the main display controller and the auxiliary display controller do not need to communicate the content frequently, thereby greatly improving the simplicity of operation, displaying the same path of branch video signal to display the multimedia file on the main display device and the auxiliary display device, therefore, the real-time performance of the display of the main display equipment and the auxiliary display equipment is ensured, and the display time delay is reduced.

After exiting the annotation mode, the multimedia file can be normally operated. The method comprises the steps that a main display controller receives touch operation acting on main display equipment and/or receives touch operation acting on auxiliary display equipment and sent by an auxiliary display controller; the main display controller transmits the touch operation to the electronic equipment, and the electronic equipment is used for operating the multimedia file to which the external video signal belongs according to the touch operation.

On one hand, the main display controller screen shields the controller from touch operation on the main display equipment.

The user can utilize finger or touch pen to trigger touch operation on the non-main operation region in the screen of main display device according to actual conditions, and main display controller can receive the touch operation that acts on in main display device, and afterwards, main display controller transmits touch operation to electronic equipment, and electronic equipment is used for operating the multimedia file that external video signal belongs to according to touch operation.

In one case, the touch operation may refer to data of touch points, which includes one or more of the number of touch points, the state of the touch points, coordinates of the touch points, and pressure values of the touch points.

Wherein the coordinates of the touch point include a horizontal axis coordinate x and a vertical axis coordinate y.

If the screen of the main display device and the screen of the electronic device have a difference in resolution, the coordinates of the touch point on the screen of the main display device can be mapped into the screen of the electronic device to unify the coordinates, so that the multimedia file can be conveniently operated, that is, the multimedia file is linearly scaled and shifted according to the size of the touch point on the screen of the main display device, so that the touch position and the display position are matched.

If the screen of the main display device is identical in resolution to the screen of the electronic device, the coordinates of the touch point may be directly used.

In another case, the touch operation may refer to a touch event, also called a touch gesture, a slide gesture, and the like, such as a double click, a leftward slide, a rightward slide, and the like.

In this case, the main display device may encapsulate data of the touch point as a touch event to map to a function commonly used by the multimedia file, such as mapping a leftward sliding to a page turning on the previous page, mapping a rightward sliding to a page turning on the next page, and the like, thereby reducing an amount of computation of the data of the touch point by the electronic device.

After the electronic equipment operates the multimedia file, the external video signal is updated, the main display controller correspondingly updates the sub video signal, and the operation acting on the main display equipment is synchronously displayed in the main display equipment and the auxiliary display equipment.

On the other hand, the auxiliary display controller shields the touch operation acting on the auxiliary display device, and the auxiliary display controller screen shields the touch operation acting on the auxiliary display device to the controller.

The user can utilize a finger or a touch pen to trigger touch operation on a non-main operation area in a screen of the auxiliary display device according to actual conditions, the main display controller receives the touch operation which is sent by the auxiliary display controller and acts on the auxiliary display device, and then the main display controller transmits the touch operation to the electronic device, and the electronic device is used for operating a multimedia file to which an external video signal belongs according to the touch operation.

Further, the touch operation may refer to data of touch points, which includes one or more of the number of touch points, the state of the touch points, coordinates of the touch points, and pressure values of the touch points.

If the resolution of the screen of the auxiliary display device is different from that of the screen of the electronic device, the coordinates of the touch point on the screen of the auxiliary display device can be mapped into the screen of the electronic device to unify the coordinates, so that the multimedia file is conveniently operated, namely, the multimedia file is linearly scaled and shifted according to the size of the touch point on the auxiliary display device, so that the touch position and the display position are matched.

If the screen of the sub display device is identical in resolution to the screen of the electronic device, the coordinates of the touch point may be directly used.

In this embodiment, the main display controller receives touch operations acting on the main display device and the auxiliary display device, and both can inform the electronic device to operate the multimedia file according to the touch operations, and under the condition that the distance between the main display device and the auxiliary display device is far, the user can conveniently operate the multimedia file nearby, and the operations of the user on the multimedia file are synchronously displayed on the main display device and the auxiliary display device, so that the flexibility is high, and the practicability is high.

Example two

Fig. 3 is a flowchart of a video signal processing method according to a second embodiment of the present invention, where the present embodiment further increases the situations that the main display device and the auxiliary display device display different multimedia files based on the foregoing embodiment, and the method specifically includes the following steps:

s301, the main display controller receives an external video signal transmitted by the electronic equipment.

S302, the main display controller generates a first sub video signal based on the external video signal, and the first sub video signal is a screen driving signal matched with the main screen.

The first sub video signal is matched with the main screen, that is, the main screen can play the first sub video signal.

S303, main display controller will first minute video signal transmission extremely signal converter, signal converter is used for with first minute video signal transmission plays to main screen.

And S304, the controller generates a main video signal.

In a particular implementation, the controller may determine a multimedia file, and generate the main video signal using the multimedia file.

The main video signals are all video signals, such as HDMI signals.

In one way of generating the main video signal, a storage device is connected to the main display device, wherein the storage device is a device for storing data, such as a U disk.

In this manner, the controller may read the multimedia file from the storage device and store the multimedia file in a local cache.

At this time, the controller may invoke an application adapted to the format of the multimedia file, open the multimedia file, display the multimedia file on the desktop, convert the desktop data into two paths of video signals, and convert the multimedia file into a main video signal, i.e., the main video signal is used to display the multimedia file.

Of course, the manner of generating the main video signal is only an example, and when the embodiment is implemented, other manners of generating the main video signal may be set according to actual situations, for example, downloading a multimedia file from a cloud and generating the main video signal according to the multimedia file, and the like. In addition to the above-mentioned method for generating the main video signal, those skilled in the art may also adopt other methods for generating the main video signal according to actual needs, and the embodiment is not limited thereto.

S305, the controller transmits the main video signal to the signal switch.

That is, at this time, the signal switcher has two paths of video signal inputs, and one path is an external video signal output by the signal switcher; in another aspect, the controller generates a main video signal.

S306, the main display controller transmits a second enabling signal to the signal switcher to control the signal switcher to transmit the main video signal to the auxiliary display controller, and the auxiliary display controller is used for converting the main video signal into a second sub video signal and transmitting the second sub video signal to the auxiliary screen for playing.

In this embodiment, the main display controller outputs the first sub-video signal to the signal switch, and at the same time, the main display controller generates the second enable signal and transmits the second enable signal to the signal switch.

The signal switcher responds to the second enabling signal and outputs a main video signal from the controller, namely, the main video signal is output to the auxiliary display controller, and the auxiliary display controller converts the main video signal into a second sub video signal and transmits the second sub video signal to the auxiliary screen for playing. Similarly, the second sub video signal is matched with the sub screen and can be played in the sub screen.

Further, the sub display controller receives the main video signal from the controller, puts the main video signal into the frame memory, generates serial display data and a scanning control time sequence required by the screen aiming at the main video signal in a partition driving mode, namely a second sub video signal, and the screen plays according to the second sub video signal (the serial display data and the scanning control time sequence), thereby displaying the multimedia file on the screen.

In this embodiment, the main display controller receives an external video signal transmitted by the electronic device; the main display controller generates a first sub video signal based on the external video signal, and the first sub video signal is a screen driving signal matched with the main screen; the main display controller transmits the first sub video signal to the signal converter, on one hand, the signal converter is used for transmitting the first sub video signal to the main screen for playing, on the other hand, the signal converter is also used for converting the first sub video signal into an external video signal and transmitting the external video signal to the signal switcher; the controller generates a main video signal, the controller transmits the main video signal to the signal switcher, the main display controller transmits a second enabling signal to the signal switcher to control the signal switcher to transmit the main video signal to the auxiliary display controller, the auxiliary display controller is used for converting the main video signal into a second sub video signal, and transmitting the second sub video signal to the auxiliary screen for playing, so that the main screen can be used for displaying the video signal from the external equipment, the auxiliary screen can display the video signal from the controller, the main display equipment and the auxiliary display equipment can display different multimedia files, the main display equipment and the auxiliary display equipment are coordinated to play the sub video signal by the main display controller, one electronic equipment can be accessed, and the two machines do not need to be respectively and independently accessed into different electronic equipment, the method and the device greatly improve the simplicity of operation, the main display controller and the auxiliary display controller do not need to communicate with each other frequently according to the content, the simplicity of operation is greatly improved, the same path of branch video signal is displayed, and the multimedia file can be displayed on the main display device and the auxiliary display device, so that the display instantaneity of the main display device and the auxiliary display device is ensured, and the display delay is reduced.

EXAMPLE III

Fig. 4 is a schematic structural diagram of a main display device according to a third embodiment of the present invention, the main display device is respectively connected to a secondary display device and an electronic device, and the main display device is provided with a controller 401, a main display controller 402, a signal switcher 403, a signal converter 404, and a main screen 405; the auxiliary display device is provided with an auxiliary display controller and an auxiliary screen;

the main display controller 402 is configured to:

receiving an external video signal transmitted by the electronic equipment;

generating a first sub video signal based on the external video signal, wherein the first sub video signal is a screen driving signal adapted to the main screen 405;

transmitting the first component video signal to the signal converter 404, wherein the signal converter 404 is configured to transmit the first component video signal to a main screen 405 for playing; the video signal switcher 403 is further configured to convert the first sub video signal into the external video signal and transmit the external video signal to the external video signal;

transmit first enable signal to signal switch 403 to control signal switch 403 will external video signal transmits to vice display accuse ware, vice display accuse ware is used for with external video signal converts first minute video signal into, will first minute video signal transmit to vice screen plays.

In one embodiment of the invention, the main display device is provided with a data port, and the electronic device is accessed to the data port;

or,

In an embodiment of the present invention, the master display controller 402 is further configured to:

receiving touch operation acting on the main display equipment, and/or receiving touch operation acting on the auxiliary display equipment and sent by the auxiliary display controller;

and transmitting the touch operation to the electronic equipment, wherein the electronic equipment is used for operating the multimedia file to which the external video signal belongs according to the touch operation.

receiving an annotation operation acting on the main display device;

generating annotation information on the external video signal according to the annotation operation;

and performing signal conversion processing on the external video signal with the annotation information to obtain a first sub video signal matched with the main screen 405.

receiving annotation operation which is sent by the auxiliary display controller and acts on the auxiliary display equipment;

In an embodiment of the present invention, the controller 401 is configured to:

generating a main video signal;

transmitting the main video signal to the signal switcher 403;

the main display controller 402 is further configured to transmit a second enable signal to the signal switch 403, so as to control the signal switch 403 to transmit the main video signal to the sub display controller, and the sub display controller is configured to convert the main video signal into a second sub video signal, and transmit the second sub video signal to the sub screen for playing.

The main display device provided by the embodiment of the invention can execute the video signal processing method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.

Example four

Fig. 5 is a schematic structural diagram of a video signal processing system according to a fourth embodiment of the present invention, the system includes a main display device 510 and a sub display device 520 connected to the main display device 510, the main display device 510 is connected to an electronic device, and the main display device 510 is provided with a controller 511, a main display controller 512, a signal switch 513, a signal converter 514, and a main screen 515; a secondary display controller 521 and a secondary screen 522 are arranged in the secondary display device 520, and the controller 511 is further connected with the primary display controller 512;

the main display controller 512 is configured to:

receiving an external video signal transmitted by the electronic equipment;

generating a first sub video signal based on the external video signal, wherein the first sub video signal is a screen driving signal adapted to the main screen 515;

transmitting the first component video signal to the signal converter 514, wherein the signal converter 514 is configured to transmit the first component video signal to a main screen 515 for playing; the signal switcher 513 is further configured to convert the first component video signal into the external video signal and transmit the external video signal to the external video signal;

transmitting a first enable signal to the signal switch 513 to control the signal switch 513 to transmit the external video signal to the secondary display controller 521;

the secondary display controller 521 is configured to convert the external video signal into a first sub video signal, and transmit the first sub video signal to the secondary screen 522 for playing.

In one embodiment of the present invention, the primary display device 510 has a data port, and the electronic device accesses the data port;

or,

the electronic device has a data port to which a screen transmission device is connected, and the main display device 510 is wirelessly connected to the screen transmission device.

In an embodiment of the present invention, the master display 512 is further configured to:

receiving a touch operation acting on the primary display device 510, and/or receiving a touch operation acting on the secondary display device 520 sent by the secondary display controller 521;

receiving an annotation operation acting on the main display device 510;

and performing signal conversion processing on the external video signal with the annotation information to obtain a first sub video signal matched with the main screen 515.

receiving an annotation operation which is sent by the secondary display controller 521 and acts on the secondary display device 520;

In an embodiment of the present invention, the controller 511 is configured to:

generating a main video signal;

transmitting the main video signal to the signal switcher 513;

the main display controller 512 is further configured to transmit a second enable signal to the signal switch 513, so as to control the signal switch 513 to transmit the main video signal to the sub display controller 521;

the sub display controller 521 is configured to convert the main video signal into a second sub video signal and transmit the second sub video signal to the sub screen 522, where the sub screen 522 is configured to play the second sub video signal.

The video signal processing system provided by the embodiment of the invention can execute the video signal processing method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.

EXAMPLE five

Fig. 6 is a schematic structural diagram of a computer device according to a fifth embodiment of the present invention. As shown in fig. 6, the computer apparatus includes a processor 600, a memory 601, a communication module 602, an input device 603, and an output device 604; the number of processors 600 in the computer device may be one or more, and one processor 600 is taken as an example in fig. 6; the processor 600, the memory 601, the communication module 602, the input device 603 and the output device 604 in the computer apparatus may be connected by a bus or other means, and the connection by the bus is exemplified in fig. 6.

The memory 601 is a computer readable storage medium, and can be used for storing software programs, computer executable programs, and modules, such as modules corresponding to the video signal processing method in the embodiment (for example, the controller 401 and the main display controller 402 in the main display device shown in fig. 4, or the controller 511, the main display controller 512, and the sub display controller 521 in the video signal processing system shown in fig. 5). The processor 600 executes various functional applications of the computer device and data processing, i.e., implements the above-described video signal processing method, by executing the software programs, instructions, and modules stored in the memory 601.

The memory 601 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to use of the computer device, and the like. Further, the memory 601 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, memory 601 may further include memory located remotely from processor 600, which may be connected to a computer device through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

And the communication module 602 is configured to establish a connection with the display screen and implement data interaction with the display screen. The input device 603 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the computer apparatus.

The computer device provided in this embodiment may perform the video signal processing method provided in any embodiment of the present invention, and its corresponding functions and advantages are described in detail.

EXAMPLE six

Sixth embodiment of the present invention also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method of processing a video signal,

the main display device is respectively connected with the auxiliary display device and the electronic device, and a controller, a main display controller, a signal switcher, a signal converter and a main screen are arranged in the main display device; the method comprises the following steps that a secondary display controller and a secondary screen are arranged in the secondary display equipment, and the method comprises the following steps:

Of course, the computer-readable storage medium provided by the embodiments of the present invention is not limited to the method operations described above, and may also perform related operations in the video signal processing method provided by any embodiment of the present invention.

From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.

It should be noted that, in the embodiment of the main display device and the video signal processing system, the units and modules included in the embodiment are only divided according to functional logic, but are not limited to the above division as long as the corresponding functions can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A video signal processing method is characterized in that a main display device is respectively connected with an auxiliary display device and an electronic device, and a controller, a main display controller, a signal switcher, a signal converter and a main screen are arranged in the main display device; the method comprises the following steps that a secondary display controller and a secondary screen are arranged in the secondary display equipment, and the method comprises the following steps:

2. The method of claim 1, wherein the primary display device has a data port, the electronic device accessing the data port;

or,

3. The method of claim 1, further comprising:

4. The method of claim 1, wherein the master display controller generates a first sub-video signal based on the external video signal, comprising:

5. The method of claim 1, wherein the master display controller generates a first sub-video signal based on the external video signal, comprising:

6. The method according to any one of claims 1-5, further comprising:

the controller generates a main video signal;

the controller transmits the main video signal to the signal switcher;

7. The main display device is characterized in that the main display device is respectively connected with a pair of display devices and an electronic device, and a controller, a main display controller, a signal switcher, a signal converter and a main screen are arranged in the main display device; the auxiliary display device is provided with an auxiliary display controller and an auxiliary screen;

the main display controller is used for:

receiving an external video signal transmitted by the electronic equipment;

8. A video signal processing system is characterized by comprising a main display device and an auxiliary display device which are connected, wherein the main display device is connected with an electronic device, and a controller, a main display controller, a signal switcher, a signal converter and a main screen are arranged in the main display device; the auxiliary display equipment is provided with an auxiliary display controller and an auxiliary screen, and the controller is also connected with the main display controller;

the main display controller is used for:

receiving an external video signal transmitted by the electronic equipment;

9. A computer device, characterized in that the computer device comprises:

one or more processors;

a memory for storing one or more programs;

when executed by the one or more processors, cause the one or more processors to implement the method of processing a video signal as claimed in any one of claims 1-6.

10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method of processing a video signal as claimed in any one of the claims 1 to 6.