CN106506995B - Method and device for providing and displaying standby signals of display unit group - Google Patents
Method and device for providing and displaying standby signals of display unit group Download PDFInfo
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- CN106506995B CN106506995B CN201610980689.8A CN201610980689A CN106506995B CN 106506995 B CN106506995 B CN 106506995B CN 201610980689 A CN201610980689 A CN 201610980689A CN 106506995 B CN106506995 B CN 106506995B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
Abstract
The invention relates to a method and a device for providing and displaying standby signals of a display unit group, wherein the method for providing the standby signals of the display unit group comprises the following steps: inputting a standby total video signal of the multi-screen control system into a selected display unit; when detecting that the original sub video signal of a display unit has a fault, determining a video component corresponding to a display range as a standby sub video signal corresponding to the display unit according to the display range corresponding to the display unit; the method and the device do not need to carry out processing such as division of the standby total video signal, reduce the workload of the multi-screen control system for processing the standby total video signal, improve the corresponding processing efficiency and effectively control the corresponding cost.
Description
Technical Field
The present invention relates to the field of video signal processing technologies, and in particular, to a method and an apparatus for providing and displaying standby signals of a display unit group.
Background
A multi-screen display system such as a tiled wall generally includes a plurality of display unit sets, each display unit set includes a plurality of display units, and under a normal condition, a multi-screen control system of the multi-screen display system can send a total video signal to a certain display unit set to control the display unit set to correspondingly display the total video signal, and each display unit of the display unit set needs to cooperatively display different portions of the total video signal, so as to display the total video signal input thereto by the display unit set.
In the process of displaying a total video signal input to a certain display unit group, multiple paths of branch video signals respectively corresponding to each display unit need to be set in a multi-screen control system, and the multiple paths of branch video signals are respectively sent to the corresponding display units by the multi-screen control system, so that the cooperative display of the multiple display units can be ensured. In the above cooperative display process, if one or more paths of the multiple paths of the video signals in the multi-screen control system fail, the displayed video image is incomplete, and the reliability of the multi-screen display system for displaying the corresponding total video signal is affected.
The conventional scheme generally adopts a complete backup scheme of double video signal redundancy, namely, a total video signal is backed up in a multi-screen control system as a standby signal, the standby total video signal is divided into a plurality of paths of standby sub video signals corresponding to all display units respectively by the same scheme as an original total video signal, and when the original sub video signal corresponding to a certain display unit fails, the corresponding standby sub video signal is input into a display channel of the display unit so as to ensure that the display unit smoothly displays the corresponding video signal; the above-mentioned complete backup scheme has guaranteed to a certain extent that many screen display system shows the reliability of corresponding total video signal, however, it increases many screen control system's work load of handling video signal wherein easily, influences the treatment effeciency, even needs the upgrading of above-mentioned many screen control system or increases intelligent treater just can guarantee wherein going on smoothly of video signal processing work, leads to the processing cost height.
Disclosure of Invention
Therefore, it is necessary to provide a method and an apparatus for providing and displaying standby signals of a display unit group, aiming at the technical problem that the processing efficiency is easily affected by the conventional scheme, and even the smooth proceeding of the video signal processing work can be ensured only by upgrading the multi-screen control system or adding an intelligent processor, which results in high processing cost.
A method of providing a standby signal for a group of display units, comprising the steps of:
inputting a standby total video signal of the multi-screen control system into a selected display unit;
when detecting that the original sub video signal of the display unit has a fault, determining the video component corresponding to the display range as the standby sub video signal corresponding to the display unit according to the display range corresponding to the display unit.
A standby signal providing apparatus of a display unit group, comprising:
the first transmission module is used for inputting the standby total video signals of the multi-screen control system into the selected display unit;
the second transmission module is used for transmitting the standby total video signal from the selected display unit to other display units of the display unit group by using a preset video signal transmission channel;
the determining module is used for determining the video component corresponding to the display range as the standby sub video signal corresponding to the display unit according to the display range corresponding to the display unit when the original sub video signal of the display unit is detected to be faulty.
In the method and system for providing the standby signals of the display unit group, the standby total video signal of the display unit group can be transmitted to each other display unit by the selected display unit, so that the multi-screen control system can acquire the standby sub-video signal corresponding to the display unit from the passed standby total video signal for any display unit, and in the process of providing the standby signal (standby sub-video signal) by each display unit of the display unit group, only one path of standby total video signal needs to be output to the selected display unit by the multi-screen control system, thereby reducing the workload of the multi-screen control system for processing the standby total video signal, improving the corresponding processing efficiency, greatly reducing the number of video signal paths output by the multi-screen control system, and enabling the multi-screen control system to be free from the work of related hardware upgrading or intelligent processor addition in the process of providing the standby signal of the multi-screen display system, the corresponding cost is effectively controlled.
A standby signal display method of a display unit group comprises the following steps:
when detecting that the original sub video signal of the display unit has a fault, determining a signal fault display unit, and acquiring a standby sub video signal corresponding to the signal fault display unit according to a standby signal providing method of the display unit group;
switching the signal input into the display channel of the signal fault display unit from the original sub video signal to the standby sub video signal;
and displaying the standby sub video signal through the signal failure display unit.
A standby signal display device of a display unit group, comprising:
the acquisition module is used for determining a signal failure display unit when detecting that the original sub-video signal of the display unit fails, and acquiring a standby sub-video signal corresponding to the signal failure display unit by using a standby signal providing device of the display unit group;
the switching module is used for switching the signal input into the display channel of the signal fault display unit from the original sub video signal to the standby sub video signal;
and the display module is used for displaying the standby sub video signal through the signal fault display unit.
According to the standby signal display method and system of the display unit group, when the original sub-video signals of the display unit are detected to be in fault, the standby sub-video signals corresponding to the signal fault display unit can be obtained by using the standby signal providing scheme of the display unit group, signals of display channels of the input signal fault display unit are switched to the standby sub-video signals, and the standby sub-video signals are displayed on the fault display unit.
Drawings
FIG. 1 is a flow chart of a method for providing redundancy signals for a group of display elements according to one embodiment;
FIG. 2 is a schematic diagram of a display unit layout according to an embodiment;
FIG. 3 is a schematic diagram of a multi-screen display system according to a conventional scheme;
FIG. 4 is a block diagram of a multi-screen display system according to an embodiment;
FIG. 5 is a schematic diagram of a group of display elements according to an embodiment;
FIG. 6 is a schematic diagram of an embodiment of a device for providing standby signals for a group of display elements;
FIG. 7 is a flowchart of a method for displaying standby signals for a group of display units according to one embodiment;
fig. 8 is a schematic structural diagram of a standby signal display device of a display unit group according to an embodiment.
Detailed Description
The following describes in detail embodiments of a standby signal supplying method and apparatus for a display unit group according to the present invention with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a flowchart illustrating a method for providing standby signals for a group of display units according to an embodiment, including the following steps:
s10, inputting the standby total video signal of the multi-screen control system into the selected display unit;
s20, transmitting the standby total video signal from the selected display unit to other display units of the display unit group by using a preset video signal transmission channel;
and S30, when detecting that the original sub video signal of the display unit has a fault, determining the video component corresponding to the display range as the standby sub video signal corresponding to the display unit according to the display range corresponding to the display unit.
The selected display unit may be any one of display units in a display unit group of a multi-screen display system (e.g., any one of a first display unit, a second display unit, a third display unit, and a fourth display unit shown in fig. 2), and the video signal transmission channel may be turned on from the selected display unit to an adjacent display unit, and then sequentially turn on the adjacent display units of the display unit on which the video signal transmission channel is currently turned on until all the display units except the selected display unit in the corresponding display unit group are turned on; in general, the last display unit of the video signal transmission channel that is turned on is another adjacent display unit of the selected display unit, as shown in fig. 2, the video signal transmission channel may start from the first display unit (at this time, the selected display unit is the first display unit), pass through the second display unit, the third display unit and the fourth display unit, the standby total video signal of the display unit group may be input to the first display unit, and then sequentially input to the second display unit, the third display unit and the fourth display unit from the first display unit by using the video signal transmission channel, so that each display unit may receive the standby total video signal to perform corresponding standby partial video signal interception. A video signal transmission channel can be further arranged between the other adjacent display unit of the selected display unit and the selected display unit, namely, a video signal transmission channel is arranged between the display unit which receives the standby total video signal through the video signal transmission channel and the selected display unit, so that the standby total video signal can be transmitted back among all the display units of the display unit group in a ring connection mode, and the reliability of obtaining the corresponding standby signal by each display unit is further improved.
As shown in fig. 3, a certain display unit group of the multi-screen display system usually includes a plurality of display units, and in order to ensure the reliability of displaying the corresponding video signal by each of the display units, the multi-screen control system 31 needs to copy the original total video signal of the display unit group to obtain a standby total video signal, and respectively send the original video signal and the standby video signal to each of the display units (e.g., the first display unit 32, the second display unit 33, the third display unit 34, the fourth display unit 35, etc. shown in fig. 3); in the conventional scheme, the multi-screen control system 31 performs the same scheme division on the original total video signal and the standby total video signal according to the layout characteristics of each display unit to obtain multiple paths of original sub video signals and multiple paths of standby sub video signals that are the same as the multiple paths of original sub video signals, and then inputs the original sub video signals and the standby sub video signals to each display unit respectively, as shown in fig. 3, in the conventional scheme, the multi-screen control system needs to process and output multiple paths of video signals, the workload is very large, and it may be necessary to upgrade the multi-screen control system or add an intelligent processor to ensure the smooth processing of the video signals therein.
Referring to fig. 4, in this embodiment, the multi-screen control system 31 does not need to perform processing such as dividing the standby total video signal therein, and the standby total video signal can be directly input to the first display unit 32 of the multi-screen display system, and the first display unit 32 sequentially sends the standby total video signal to the second display unit 33, the third display unit 34, and the fourth display unit 35 through a preset video signal transmission channel, so that each display unit receives the standby total video signal; if the original sub-video signal corresponding to a certain display unit fails, at this time, the multi-screen control system 31 may determine, from the standby total video signal, the video component corresponding to the display range of the display unit according to the display range corresponding to the display unit, as the standby sub-video signal corresponding to the display unit, so as to provide the standby sub-video signal of the display unit; the workload of the multi-screen control system for processing video signals in the multi-screen control system is greatly reduced, and the requirement on hardware configuration of the multi-screen control system is low.
The multi-screen control system can divide the standby total video signal into the video components corresponding to the display units according to the display ranges corresponding to the display units, and sequentially send the divided standby total video signal to the selected display unit and other display units of the display unit group, so that each display unit can obtain the standby sub-video signal corresponding to each display unit. The multi-screen control system can also directly and sequentially send the standby total video signal to the selected display unit and other display units of the display unit group, and when the standby total video signal passes through the display units, video components corresponding to the display ranges are intercepted from the standby total video signal according to the display ranges corresponding to the display units to serve as standby sub-video signals corresponding to the display units.
The display unit group may include 4 display units, the layout mode of the display units is 2 × 2, that is, two rows and two columns are laid out, and the display unit group corresponding to the layout mode more easily divides or intercepts the corresponding standby total video signal into the standby sub video signals corresponding to each display unit. The layout of the display unit groups may also include other forms, such as 1 × 4 (four rows and four columns), 1 × 6 (six rows and six columns), or 2 × 3 (two rows and three columns), etc. The video signal transmission channel can be a one-way transmission channel, so that the order of transmitting the standby total video signal is ensured; the video signal transmission device can also be a bidirectional transmission channel, if transmission in a certain direction fails, the transmission of the standby total video signal can be carried out in the other direction, and the transmission reliability of the standby total video signal is ensured.
The standby signal providing method of the display unit group provided by the invention has the advantages that the standby total video signal of the display unit group can be transmitted to other display units by the selected display unit, so that the multi-screen control system can acquire the standby sub-video signal corresponding to the display unit from the passed standby total video signal for any display unit, only one path of standby total video signal needs to be output to the selected display unit by the multi-screen control system in the process of providing the standby signal (standby sub-video signal) by each display unit of the display unit group, the workload of the multi-screen control system for processing the standby total video signal is reduced, the corresponding processing efficiency is improved, the number of video signal paths output by the multi-screen control system is greatly reduced, and the multi-screen control system does not need to carry out related hardware upgrading or intelligent processor adding work in the process of providing the standby signal of the multi-screen display system, the corresponding cost is effectively controlled.
In one embodiment, the selected display unit is any one of the display units of the display unit group; the video signal transmission channel can be a unidirectional transmission channel or a bidirectional transmission channel;
the process of transmitting the standby total video signal from the selected display unit to other display units by using the preset video signal transmission channel comprises the following steps:
and establishing a video signal transmission channel between the last display unit and the first display unit in the display unit group, and controlling the standby total video signal to be transmitted in each display unit in a loop connection mode through the video signal transmission channel.
As shown in fig. 2, the video signal transmission channel of this embodiment may be sequentially connected to other display units of the multi-screen display system through the selected display unit, and then the other adjacent display unit of the selected display unit is connected to the selected display unit, so that the standby total video signal may be transmitted in a loop connection manner through the video signal transmission channel in each display unit, which has higher reliability.
In an embodiment, before the standby total video signal of the multi-screen control system is input to the selected display unit, the method may further include the steps of:
establishing video signal transmission channels of any two adjacent display units;
and/or the presence of a gas in the gas,
and respectively acquiring position parameters of each display unit on the multi-screen display system, and determining the display range of the display unit for displaying the standby total video signal according to the position parameters.
In this embodiment, the video signal transmission channels of any two adjacent display units can be established, so that a certain display unit in the video signal transmission channel is connected to the adjacent display unit, and the integrity of the connected display unit can be effectively ensured, so as to ensure that the standby total video signal can pass through each display unit of the multi-screen display system through the video signal transmission channel, thereby further improving the reliability of each display unit for acquiring the corresponding standby signal.
In addition, in this embodiment, the display range of the display unit displaying the standby main video signal may be determined according to the position parameter of each display unit on the multi-screen display system, so that the multi-screen control system may intercept the corresponding standby sub video signal for the display unit according to the display range, and the intercepted standby sub video signal has higher accuracy.
In an embodiment, the determining, according to the display range corresponding to the display unit, the video component corresponding to the display range as the standby sub video signal corresponding to the display unit includes:
and intercepting a video component corresponding to the display range from the standby total video signal according to the display range corresponding to the display unit to determine the video component as a standby sub video signal corresponding to the display unit.
In the embodiment, after the standby total video signal is sent to each display unit of the display unit group, the corresponding standby sub video signal is intercepted, so that the method has higher accuracy.
In one embodiment, before the step of inputting the standby total video signal of the multi-screen control system into the selected display unit, the method further includes:
dividing display units of the multi-screen display system into display unit groups according to a 2-by-2 layout mode; each display unit group comprises four display units in two rows and two columns;
if the number of rows and/or columns of the display units of the multi-screen display system is an odd number, a row and/or column virtual display unit is constructed, wherein each display unit in the multi-screen display system is divided into display unit groups of two rows and two columns.
In this embodiment, the display units of the multi-screen display system are divided into the display unit groups according to a 2 × 2 layout manner, so that each display unit includes two rows and two columns of display units, which is beneficial for the multi-screen control system to divide corresponding video components for the display units in each display unit group.
In this embodiment, if the number of rows and/or columns of the display units of the multi-screen display system is an odd number, and the display units included in each display unit group cannot be two rows and two columns, when the number of rows of the display units of the multi-screen display system is an odd number, a row of virtual display units may be constructed, so that the number of rows of the display units of each display unit group is 2; when the number of the display unit columns of the multi-screen display system is odd, a virtual display unit column may be constructed, so that the number of the display unit columns of each display unit group is 2. As shown in fig. 5, if the display units of the multi-screen display system are 2 rows and 3 columns, and the display unit 1, the display unit 2, the display unit 3 and the display unit 4 are divided into one display unit group, only the display unit 5 and the display unit 6 are left, and the 2 x 2 display unit group cannot be formed, in this case, the virtual display unit 7 and the virtual display unit 8 can be configured to form the 2 x 2 display unit group together with the display unit 5 and the display unit 6, so that each display unit group is a display unit with two rows and two columns.
If a certain display unit group comprises a virtual display unit, when the multi-screen control system divides or intercepts the standby sub-video signals for the virtual display unit, signals which are not interfered by other display units, such as blank video signals at one end of the virtual display unit, can be allocated to the virtual display unit.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a standby signal providing apparatus for a group of display units according to an embodiment, including:
the first transmission module 10 is used for inputting the standby total video signals of the multi-screen control system into the selected display unit;
a second transmission module 20, configured to transmit the standby total video signal from the selected display unit to each of the other display units of the display unit group by using a preset video signal transmission channel;
the intercepting module 30 is configured to determine, when it is detected that an original sub-video signal of a display unit fails, a video component corresponding to a display range according to the display range corresponding to the display unit as a standby sub-video signal corresponding to the display unit.
The technical features and advantages described in the embodiments of the method for providing standby signals for a display unit group are applicable to the embodiments of the device for providing standby signals for a display unit group, and thus the description is provided.
Referring to fig. 7, fig. 7 is a flowchart illustrating a standby signal display method for a group of display units according to an embodiment, including the following steps:
s50, when detecting the original sub video signal of the display unit is faulty, determining the signal fault display unit, and obtaining the standby sub video signal corresponding to the signal fault display unit according to the standby signal providing method of the display unit group;
in the step S50, embedded software built in the multi-screen control system may be used to detect whether the original sub-video signal of the display unit fails, and when the original sub-video signal of the display unit fails, a video component corresponding to the display range of the signal failure display unit is selected from the standby total video signal passing through the signal failure display unit as the standby sub-video signal, so as to implement switching from the subsequent original sub-video signal to the standby sub-video signal, and ensure the corresponding video display quality of the multi-screen display system.
S60, switching the signal input into the display channel of the signal failure display unit from the original sub video signal to the standby sub video signal;
s70, displaying the standby sub video signal through the signal failure display unit.
In one embodiment, taking the multi-screen display system including four display units in the layout shown in fig. 4 (the display units are arranged in a row), the multi-screen control system outputs two video signals, namely, the original video signal and the standby video signal, and the original video signal is in the form of a plurality of original sub video signals, which are in the form of high resolution 1: 1 output, the standby video signal adopts 1: 4 output to the selected display unit, the above-mentioned spare total video signal can also be through enlargeing 4 times mode and spreading 4 display units, transmit through the ring joint mode among 4 units, make to input the original video signal and spare video signal cost of the display unit at the same time only 1.25 times of the original video signal of single input, the course of providing of the above-mentioned spare video signal has lower cost.
When detecting that the original sub-video signal of the display unit is in fault, the standby signal providing scheme of the display unit group can be used for acquiring the standby sub-video signal corresponding to the signal fault display unit, and the signal of the display channel of the input signal fault display unit is switched to the standby sub-video signal, so that the standby sub-video signal is displayed on the fault display unit.
In an embodiment, after determining a signal failure display unit when detecting that an original sub video signal of the display unit fails, and acquiring a standby sub video signal corresponding to the signal failure display unit according to the standby signal providing method of the display unit group, the method may further include:
and carrying out synchronous processing on the standby sub video signals corresponding to the signal failure display unit and the video signals corresponding to other display units respectively.
The video signals respectively corresponding to the other display units may include an original sub video signal and a spare sub video signal currently input to the corresponding display unit.
In this embodiment, before the signal of the display channel of the input signal failure display unit is switched to the standby sub video signal, the standby sub video signal corresponding to the signal failure display unit and the video signals corresponding to other display units are synchronized, so that the standby sub video signal corresponding to the signal failure display unit and the video signals input to the display channels of other display units in the multi-screen display system are synchronized in characteristics such as time and images, and the display quality of the multi-screen display system on the corresponding video signals can be effectively improved.
In an embodiment, after the signal input to the display channel of the signal failure display unit is switched from the original sub video signal to the standby sub video signal, the method may further include the steps of:
and detecting the standby sub video signals corresponding to each display unit, and giving an alarm when detecting that the standby sub video signals are in failure.
The embodiment can detect the fault of the standby sub video signal in a real-time or timing polling mode, and alarm by flashing a lamp and/or sending an alarm sound when the fault of the standby sub video signal is detected. The multi-screen control system can detect and detect the standby sub-video signals corresponding to each display unit by using the embedded software installed in the multi-screen control system, and when the standby sub-video signal fault corresponding to any one display unit is detected and the reliability of the display work of the multi-screen display system is possibly influenced, alarms are given out in a mode of flashing a lamp and/or sending alarm sound and the like, so that corresponding staff can obtain the fault information of the standby sub-video signals and process the fault information in time, and the reliability of the video signal display work of the multi-screen display system is ensured.
As an embodiment, when the embedded software in the multi-screen control system detects that an original input signal (original sub-video signal) of a certain display unit has a fault, the multi-screen control system is notified, and after receiving a fault prompt, the related control software in the multi-screen control system can switch 4 units of the display unit group where the unit is located to a standby desktop signal, or can control the software to switch the whole wall to a standby desktop mode, and simultaneously display an alarm prompt on a control software interface to notify a user that the desktop is switched, so that the user can detect and recover the fault in the background without affecting the use of the user. In order to prevent the failure of the standby desktop when the multi-screen display system uses the main desktop, the standby desktop cannot be known in time after the failure occurs, and the failure of the standby desktop is found only when the failure of the main desktop is switched to the standby desktop, the standby desktop can also be detected in real time or in a timed polling mode except for the detection of the main desktop in the working process of the system, and an alarm is reported when the failure occurs so as to inform a user of finding the failure in time.
Referring to fig. 8, fig. 8 is a schematic structural diagram of a standby signal display device of a display unit group according to an embodiment, including:
an obtaining module 50, configured to determine a signal failure display unit when detecting that an original sub-video signal of the display unit fails, and obtain a standby sub-video signal corresponding to the signal failure display unit by using a standby signal providing device of the display unit group;
a switching module 60, configured to switch a signal input to the display channel of the signal failure display unit from an original sub video signal to the standby sub video signal;
and a display module 70 for displaying the standby sub video signal through the signal failure display unit.
The technical features and the advantageous effects described in the embodiments of the display unit group standby signal display method are applicable to the embodiments of the display unit group standby signal display device, and thus it is stated that the display unit group standby signal display device and the display unit group standby signal display method are in one-to-one correspondence.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (11)
1. A method for providing standby signals for a group of display units, comprising the steps of:
inputting a standby total video signal of the multi-screen control system into a selected display unit;
transmitting the standby total video signal from the selected display unit to other display units of the display unit group by using a preset video signal transmission channel, wherein the standby total video signal comprises: the video signal transmission channel is switched on from the selected display unit to a certain adjacent display unit, and then the adjacent display units of the display unit currently switched on by the video signal transmission channel are sequentially switched on until all the display units except the selected display unit in the corresponding display unit group are switched on;
when detecting that the original sub video signal of a display unit has a fault, determining a video component corresponding to a display range as a standby sub video signal corresponding to the display unit according to the display range corresponding to the display unit; further comprising: and intercepting a video component corresponding to the display range from the standby total video signal according to the display range corresponding to the display unit to determine the video component as a standby sub video signal corresponding to the display unit.
2. The method of claim 1, wherein the selected display unit is any one of the display units of the display unit group;
the process of transmitting the standby total video signal from the selected display unit to other display units by using the preset video signal transmission channel comprises the following steps:
and establishing a video signal transmission channel between the last display unit and the first display unit in the display unit group, and controlling the standby total video signal to be transmitted in each display unit in a loop connection mode through the video signal transmission channel.
3. The method for providing standby signals for a group of display units according to claim 1, wherein before inputting the standby total video signals of the multi-screen control system into the selected display unit, the method further comprises the steps of:
establishing video signal transmission channels of any two adjacent display units;
and/or the presence of a gas in the gas,
and respectively acquiring position parameters of each display unit on the multi-screen display system, and determining the display range of the display unit for displaying the standby total video signal according to the position parameters.
4. The method for providing standby signals for a group of display units according to claim 1, further comprising, before the step of inputting the standby total video signals of the multi-screen control system into the selected display unit:
dividing display units of the multi-screen display system into display unit groups according to a 2-by-2 layout mode; each display unit group comprises four display units in two rows and two columns;
if the number of rows and/or columns of the display units of the multi-screen display system is an odd number, a row and/or column virtual display unit is constructed, wherein each display unit in the multi-screen display system is divided into display unit groups of two rows and two columns.
5. A standby signal providing apparatus for a group of display units, comprising:
the first transmission module is used for inputting the standby total video signals of the multi-screen control system into the selected display unit;
a second transmission module, configured to transmit the standby total video signal from the selected display unit to each of the other display units of the display unit group by using a preset video signal transmission channel, including: the video signal transmission channel is switched on from the selected display unit to a certain adjacent display unit, and then the adjacent display units of the display unit currently switched on by the video signal transmission channel are sequentially switched on until all the display units except the selected display unit in the corresponding display unit group are switched on;
the device comprises a determining module, a judging module and a judging module, wherein the determining module is used for determining a video component corresponding to a display range as a standby sub video signal corresponding to a display unit according to the display range corresponding to the display unit when detecting that an original sub video signal of the display unit has a fault; the determining module is specifically configured to intercept, in the standby total video signal, a video component corresponding to the display range according to the display range corresponding to the display unit, and determine the video component as a standby sub video signal corresponding to the display unit.
6. A standby signal display method of a display unit group is characterized by comprising the following steps:
when detecting that the original sub video signal of a display unit has a fault, determining a signal fault display unit, and acquiring a standby sub video signal corresponding to the signal fault display unit according to the standby signal providing method of the display unit group claimed in any one of claims 1 to 4;
switching the signal input into the display channel of the signal fault display unit from the original sub video signal to the standby sub video signal;
and displaying the standby sub video signal through the signal failure display unit.
7. The method for displaying standby signals of a display unit group according to claim 6, wherein when it is detected that the original sub-video signals of a display unit fail, the display unit with signal failure is determined, and after the method for providing standby signals of a display unit group according to any one of claims 1 to 4 acquires the standby sub-video signals corresponding to the display unit with signal failure, the method further comprises the steps of:
and carrying out synchronous processing on the standby sub video signals corresponding to the signal failure display unit and the video signals corresponding to other display units respectively.
8. The method for displaying standby signals of a group of display units according to claim 6, wherein after the switching of the signal input to the display channel of the signal failure display unit from the original sub video signal to the standby sub video signal, further comprising the steps of:
and detecting the standby sub video signals corresponding to each display unit, and giving an alarm when detecting that the standby sub video signals are in failure.
9. A standby signal display device for a group of display units, comprising:
an obtaining module, configured to determine a signal failure display unit when detecting that an original sub-video signal of the display unit fails, and obtain a spare sub-video signal corresponding to the signal failure display unit by using the spare signal providing apparatus of the display unit set according to claim 5;
the switching module is used for switching the signal input into the display channel of the signal fault display unit from the original sub video signal to the standby sub video signal;
and the display module is used for displaying the standby sub video signal through the signal fault display unit.
10. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements a standby signal providing method for a group of display units according to any one of claims 1 to 4 or a standby signal displaying method for a group of display units according to any one of claims 6 to 8 when executing the computer program.
11. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the standby signal providing method of the group of display units of any one of claims 1 to 4 or the standby signal display method of the group of display units of any one of claims 6 to 8.
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| CN110718181B (en) * | 2018-07-12 | 2021-09-21 | 杭州海康威视数字技术股份有限公司 | Signal source backup method, device and system and LED controller |
| CN114546315A (en) * | 2022-01-27 | 2022-05-27 | 惠州华阳通用电子有限公司 | Multi-screen display system and display method thereof |
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