CN113411658B - Display device - Google Patents
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- CN113411658B CN113411658B CN202110672211.XA CN202110672211A CN113411658B CN 113411658 B CN113411658 B CN 113411658B CN 202110672211 A CN202110672211 A CN 202110672211A CN 113411658 B CN113411658 B CN 113411658B
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- 238000000034 method Methods 0.000 claims description 14
- 230000007257 malfunction Effects 0.000 abstract description 5
- 230000005856 abnormality Effects 0.000 abstract description 4
- 230000001360 synchronised effect Effects 0.000 description 8
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- 238000010586 diagram Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0663—Performing the actions predefined by failover planning, e.g. switching to standby network elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The embodiment of the invention provides display equipment. Wherein, the equipment includes: the system comprises a work control unit, a work output unit, a hot standby output unit and a display unit, wherein the work output unit and the hot standby output unit have the same operation parameters; the work control unit is used for generating a second control instruction which is the same as the first control instruction when the first control instruction aiming at the work output unit is obtained; sending a first control instruction to the work output unit and synchronously sending a second control instruction to the hot standby output unit; the work output unit is used for generating a first video according to the first control instruction; the hot standby output unit is used for generating a second video according to a second control instruction; the display unit is used for displaying the first video when the work output unit does not have a fault; and displaying a second video when the work output unit fails. It is possible to avoid abnormality of the display device caused by a malfunction of the output unit.
Description
Technical Field
The invention relates to the technical field of videos, in particular to a display device.
Background
The display cannot directly display original video data, and the original video data needs to be decoded through an output box so as to be restored into a video, and then the video is displayed through the display. Therefore, if the output box fails to work properly, the display will fail to display video properly.
In the related art, in order to avoid that the display cannot normally display a video due to the fact that the output box cannot normally work, M + N output boxes may be set in the display device, where M and N are any positive integers. And the decoding system is formed by M output boxes and is responsible for decoding the original video data.
When any output box in the decoding system has a fault, one output box is selected from the N output boxes which do not belong to the decoding system, and the output box with the fault in the decoding system is replaced to form a new decoding system which is continuously responsible for decoding the original video data.
However, it takes a certain time to replace the output box in the decoding system, and in the process of replacing the output box in the decoding system, the decoding system cannot normally decode the original video data, so that in the process of replacing the output box, the display device cannot normally display the video, and therefore, the display device is temporarily abnormal due to the failure of the output box.
Disclosure of Invention
An object of an embodiment of the present invention is to provide a display device to achieve normal display that does not affect the display device when an output unit fails. The specific technical scheme is as follows:
in a first aspect of embodiments of the present invention, the display apparatus comprises: the system comprises a work control unit, a work output unit, a hot standby output unit and a display unit, wherein the work output unit and the hot standby output unit have the same operation parameters;
the work control unit is used for generating a second control instruction which is the same as the first control instruction when the first control instruction for the work output unit is acquired; sending the first control instruction to the work output unit and synchronously sending the second control instruction to the hot standby output unit;
the work output unit is used for generating a first video according to the first control instruction;
the hot standby output unit is used for generating a second video according to the second control instruction;
the display unit is used for displaying the first video when the work output unit does not have a fault; and displaying the second video when the work output unit fails.
In a possible embodiment, the device further comprises a working sending card, a hot standby sending card and a receiving card, wherein the working sending card and the hot standby sending card have the same operation parameters;
the work output unit is also used for sending the first video to the work sending card;
the hot standby output unit is further used for sending the second video to the hot standby sending card;
the receiving card is used for detecting whether the work transmitting card contains a video or not, and if the work transmitting card contains the video, the video in the work transmitting card is obtained; if the work sending card does not contain the video, acquiring the video in the hot standby sending card; sending the obtained video to the display unit;
the display unit is specifically configured to display the video sent by the receiving card.
In a possible embodiment, the power supply of the active transmitter card is different from that of the hot standby transmitter card, and the power supply of the active output unit is different from that of the hot standby output unit.
In a possible embodiment, the device further comprises a hot standby control unit;
and the hot standby control unit is used for replacing the working control unit to become a new working control unit when the working control unit fails.
In a possible embodiment, the work control unit is further configured to send synchronization information to the hot standby control unit, where the synchronization information is used to indicate a parameter of the work control unit;
and the hot standby control unit is also used for maintaining the parameter synchronization of the hot standby control unit and the parameter synchronization of the working control unit according to the synchronization information.
In a possible embodiment, the working control unit is further configured to periodically send a heartbeat message to the hot standby control unit;
the hot standby control unit is specifically configured to replace the work control unit to become a new work control unit when the heartbeat message sent by the work control unit is detected to be overtime.
In a possible embodiment, the working control unit is further configured to initialize to a new hot standby control unit after a failure and restart.
In a possible embodiment, the device further comprises a working input unit, a hot standby input unit and a signal distributor, wherein the working input unit and the hot standby input unit have the same operation parameters;
the signal distributor is used for acquiring an input signal; the input signal is synchronously sent to the working input unit and the hot standby input unit;
the working input unit is used for generating first source video data according to the input signal;
the hot standby input unit is used for generating second source video data according to the input signal;
the work output unit is specifically configured to generate a first video according to the first control instruction and the first source video data when the work input unit is not in fault; when the work input unit breaks down, generating a first video according to the first control instruction and the second source video data;
the hot standby output unit is specifically configured to generate a second video according to the second control instruction and the first source video data when the work input unit fails; and when the work input unit has a fault, generating a second video according to the second control instruction and the second source video data.
In a possible embodiment, when the work input unit fails, the work output unit generates a first video according to the first control instruction and the second source video data, including:
when receiving notification information sent by the work control unit, the work output unit generates a first video according to the first control instruction and the second source video data, wherein the notification information is sent by the work control unit when the work input unit is detected to have a fault;
when the working input unit fails, the hot standby output unit generates a second video according to the second control instruction and the second source video data, and the method includes:
and when receiving the notification information sent by the work control unit, the hot standby output unit generates a second video according to the second control instruction and the second source video data.
In a possible embodiment, the device further includes a fault reporting unit, where the fault reporting unit is configured to send a unit identifier of any unit to a preset user terminal when detecting that the any unit fails.
The embodiment of the invention has the following beneficial effects:
the display device provided by the embodiment of the invention can synchronously send the control instruction to the work output unit and the hot standby output unit through the work control unit, so that the work output unit and the hot standby output unit synchronously decode to respectively obtain the first video and the second video. When the working output unit fails, although the working output unit cannot continue to generate the first video, the hot standby output unit can continue to generate a second video which can replace the first video, and since the second video is the same as the first video, the display unit continues to display the second video which is equivalent to continue to display the first video, namely, the display device can still continue to normally display, and the failure of the visual output unit cannot cause the abnormality of the display device.
Of course, not all of the advantages described above need to be achieved at the same time in the practice of any one product or method of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained by referring to these drawings.
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 2 is another schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 3 is another schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 4 is another schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 5 is another schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived from the embodiments given herein by one of ordinary skill in the art, are within the scope of the invention.
In order to more clearly describe the display device provided in the embodiment of the present invention, an exemplary description will be given below of one possible application scenario of the display device provided in the embodiment of the present invention, and it should be understood that the following example is only one possible application scenario of the display device provided in the embodiment of the present invention, and in other possible embodiments, the display device provided in the embodiment of the present invention may also be applied in other possible application scenarios, and the following example does not limit the application scenarios.
It is assumed that the display device includes 2 output boxes, which are respectively denoted as output box 1 and output box 2, where output box 1 belongs to the decoding system and output box 2 does not belong to the decoding system. During normal operation, the display device may send the received original video data to the output box 1, the output box 1 decodes the original video data to obtain a video to be displayed, and sends the video to a display in the display device, so that the display displays the video.
When the output box 1 fails, the display device may remove the output box 1 from the decoding system, add the output box 2 into the decoding system, and send the original video data to the output box 2, the output box 2 decodes the original video data to obtain a video to be displayed, and sends the video to a display in the display device, so that the display continues to display the video.
However, it takes a certain time from when the output box 1 fails to obtain the video by decoding the original video data by the output box 2, and the display cannot normally acquire the video in this time, and thus cannot continue to normally display the video.
It can be seen that the failure of the output box will cause the display device to be abnormal, such as a short black screen, screen flicker, etc. Based on this, an embodiment of the present invention provides a display device, which may be as shown in fig. 1, and includes:
the system comprises a work control unit 111, a work output unit 121, a hot standby output unit 122 and a display unit 130, wherein the work output unit 121 and the hot standby output unit 122 have the same operation parameters.
And an operation control unit 111 configured to generate a second control instruction identical to the first control instruction when the first control instruction for the operation output unit 121 is acquired. And sends a first control instruction to the work output unit 121 and synchronously sends a second control instruction to the hot standby output unit 122.
And the work output unit 121 is configured to generate a first video according to the first control instruction.
And the hot standby output unit 122 is used for generating a second video according to the second control instruction.
A display unit 130 for displaying the first video when the work output unit 121 is not failed, and displaying the second video when the work output unit 121 is failed.
With this embodiment, the work control unit 111 may synchronously issue the control command to the work output unit 121 and the hot standby output unit 122, so that the work output unit 121 and the hot standby output unit 122 synchronously decode to obtain the first video and the second video, respectively. When the work output unit 121 fails, although the work output unit 121 cannot continue to generate the first video, the hot standby output unit 122 can continue to generate the second video that can replace the first video, and since the second video is the same as the first video, the display unit 130 continues to display the second video, which is equivalent to continuing to display the first video, that is, the display device can continue to display normally, and the failure of the visible output unit does not cause an abnormality of the display device.
The operation parameter herein refers to a parameter related to the operation of the device, and for example, taking the work output unit 121 as an example, assuming that the work output unit 121 generates the first video according to the preset decoding manner, since the configuration parameter of the preset decoding manner affects the first video output by the work output unit, the configuration parameter of the preset decoding manner is the operation parameter of the work output unit 121. The geometric size of the shape of the work output unit does not affect the first video output by the work output unit 121, and therefore the geometric size of the shape is not an operation parameter of the work output unit 121. That is, the operation output unit 121 and the hot standby output unit 122 have the same operation parameters, and include: the configuration parameters of the decoding method used are the same and do not need to include: the geometric dimensions of the shapes are the same. Other parameters of the work output unit 121 and the hot standby output unit 122 may be the same or different according to actual requirements, wherein the other parameters refer to parameters other than the operation parameters, such as the geometric dimensions of the aforementioned external shape. The following operation parameters are the same and will not be described in detail.
The following will describe each unit in the display device separately:
the operation control unit 111 may be any circuit unit or physical device with a control function, and any two units in the embodiment of the present invention may be integrated together or may be independent from each other, for example, the operation control unit 111 and the display unit 130 may be integrated together or may be independent from each other.
The work control unit 111 may receive a first control instruction input by a user with respect to the work output unit 121, where the first control instruction may be an instruction for adjusting a parameter of the work output unit 121. The work control unit 111 may synchronize the parameter carried in the first control instruction to the second control instruction so that the second control instruction is the same as the first control instruction.
It is to be understood that the first control instruction is the same as the second control instruction in this document, which means that the first control instruction and the second control instruction are used to indicate the same operation, and the form and the specific included content of the first control instruction and the second control instruction may be different.
If the work control unit 111 fails, it may be impossible to continuously and synchronously issue control commands to the work output unit 121 and the hot standby output unit 122, and the hot standby output unit 122 may be unable to continuously generate a second video identical to the first video.
Based on this, in one possible embodiment, the display device may further include a hot standby control unit 112 as shown in fig. 2. The hot standby control unit 112 becomes a new operation control unit in place of the operation control unit when the operation control unit 111 fails.
The hot standby control unit 112, when it becomes a new operation control unit, executes the same service logic as the operation control unit 111. In order to make the service logic executed by the hot standby control unit 112 after becoming a new working control unit the same as that of the working control unit 111, in a possible embodiment, the working control unit 111 may send synchronization information to the hot standby control unit 112, where the synchronization information is used to indicate a parameter of the working control unit 111, and the hot standby control unit 112 maintains the parameter of the hot standby control unit 112 to be synchronized with the parameter of the working control unit 111 according to the synchronization information.
With this embodiment, the synchronization between the parameters of the hot standby control unit 112 and the operation control unit 111 can be maintained, so as to ensure that the service logic executed by the hot standby control unit 112 after becoming the new operation control unit 111 is the same as that executed by the original operation control unit 111.
It is understood that maintaining the parameters of the hot-standby control unit 112 synchronized with the parameters of the working control unit 111 may mean maintaining the parameters related to the control service logic in the hot-standby control unit 112 synchronized with the working control unit 111, while the parameters unrelated to the control service logic in the hot-standby control unit 112 may not be synchronized with the working control unit 111.
For example, when the display device is a distributed display device, that is, each unit in the display device is relatively independent, and communication connections are established between different units through a network, the IP addresses used when the hot standby control unit 112 and the operation control unit 111 communicate with other units need to be synchronized.
It is understood that if the IP addresses used by the hot standby control unit 112 and the operation control unit 111 when communicating with other units need to be kept synchronized, the hot standby control unit 112 and the operation control unit 111 cannot communicate with other units at the same time. The hot standby control unit 112 needs to maintain communication with the operation control unit 111 to determine whether the operation control unit 111 malfunctions.
Therefore, the hot standby control unit 112 and the work control unit 111 may respectively include two network cards, assuming that the two network cards in the hot standby control unit 112 are respectively recorded as network card a and network card B, and the two network cards in the work control unit 111 are respectively recorded as network card C and network card D.
The hot standby control unit 112 may communicate with other units except the operation control unit 111 through the network card a, the operation control unit 111 communicates with other units except the hot standby control unit 112 through the network card C, and the hot standby control unit 112 and the operation control unit 111 communicate through the network card B and the network card D, respectively.
In this embodiment, the network card a and the network card C are network cards for implementing control service logic, so the IP addresses of the network card a and the network card C need to be kept synchronous, and the IP addresses of the network card B and the network card D do not need to be kept synchronous because the network card B and the network card D are unrelated to implementing control service logic. In addition, in this embodiment, only one of the network card a and the network card C is in the start state to avoid IP collision.
The way in which the hot standby control unit 112 determines whether the working control unit 111 fails may be different according to different application scenarios, and for example, in one possible embodiment, the working control unit 111 may periodically send a heartbeat message to the hot standby control unit 112.
When the operation control unit 111 fails, the hot standby control unit 112 confirms that the operation control unit 111 fails, and at this time, the hot standby control unit 112 becomes a new operation control unit 111 instead of the operation control unit 111.
For example, the operation control unit may send a heartbeat message to the hot standby control unit 112 every 10ms, and if the hot standby control unit does not receive a new heartbeat message within 10ms + T, it may determine that the heartbeat message is over time, and at this time, it determines that the operation control unit 111 has a fault, where T is a preset timeout threshold.
After the original working control unit 111 is restarted due to a failure, it is initialized to the new hot standby control unit 112, and after the new working control unit 111 becomes the new hot standby control unit 112, the service logic executed by the new working control unit is the same as that of the original hot standby control unit 112, which can be referred to the foregoing related description, and is not described herein again.
The output unit in this context may refer to any circuit unit or device having video data decoding capability, and may be, for example, the output box in the foregoing.
The input of the work output unit 121 is the same as the input of the hot standby output unit 122, and may be a local input signal of the display device or a network input signal acquired through a network. And the number of the working output units 121 and the thermal standby output units 122 may be one or more, and the number of the working output units 121 may be the same as or different from the number of the thermal standby output units 122, but the number of the thermal standby output units 122 should be not less than the number of the working output units 121.
For example, the display device may include only one work output unit 121 and one hot standby output unit 122, may include three work output units 121 and three hot standby output units 122, and may include five work output units 121 and six hot standby output units 122.
Each work output unit 121 in the display device corresponds to at least one hot standby output unit 122, and different hot standby output units 122 may correspond to the same work output unit 121 or different work output units 121. The fact that the work output unit 121 corresponds to the hot standby output unit 122 means that the work control unit 111 synchronously issues control instructions to the work output unit 121 and the hot standby output unit 122.
In a possible embodiment, the display device may also include a work transmitter card 141, a hot standby transmitter card 142, and a receiver card 143, as shown in fig. 3.
The job output unit 121 transmits the first video to the job transmission card 141. The hot standby output unit 122 transmits the second video to the hot standby transmitting card 142. The receiving card 143 detects whether the work transmitting card 141 contains a video, acquires the video in the work transmitting card 141 if the work transmitting card 141 contains the video, and acquires the video in the hot standby transmitting card 142 if the work transmitting card 141 does not contain the video.
The receiving card 143 transmits the acquired video to the display unit 130, and the display unit displays the video transmitted by the receiving card 143.
It is understood that if the video is contained in the work transmitting card 141, it can be considered that the work output unit 121 does not malfunction at this time, and the display unit 130 should theoretically display the first video at this time, so that the receiving card 143 can acquire the first video from the work transmitting card 141 and transmit it to the display unit 130 at this time, so that the display unit 130 displays the first video.
If the work transmitting card 141 does not contain video, it may be considered that the work output unit 121 fails at this time, and the display unit 130 should theoretically display the second video at this time, so the receiving card 143 may acquire the second video from the hot standby transmitting card 142 and transmit the second video to the display unit 130 at this time, so that the display unit 130 displays the second video.
The transmitting card herein may refer to any circuit unit or device having a video transmission capability, and in one possible embodiment, to avoid that the receiving card 143 cannot acquire the first video and the second video at the same time due to a power supply problem, different power supplies may be respectively set for the working output unit 121 and the hot standby output unit 122, and different power supplies may be respectively set for the working transmitting card 141 and the hot standby transmitting card 142.
It will be appreciated that if the input of the output unit is a local input signal, it is necessary to include an input unit in the display device that processes the local input signal. When the input unit fails, the output unit cannot normally acquire the input signal, and thus the display device is abnormal.
Based on this, in one possible embodiment, the display device may further include, as shown in fig. 4:
the system comprises a work input unit 151, a hot standby input unit 152 and a signal distributor 160, wherein the work input unit 151 and the hot standby input unit 152 have the same operation parameters. Other parameters of the working input unit 151 and the hot standby input unit 152 may be the same or different according to actual requirements.
The signal distributor 160 acquires an input signal and synchronously transmits the input signal to the work input unit 151 and the hot standby input unit 152. The work input unit 151 generates first raw video data from an input signal, and the hot standby input unit 152 generates second source video data from the input signal.
The work output unit 121 generates a first video according to the first control instruction and the first source video data when the work input unit 151 is not malfunctioning. And generates a first video according to the first control command and the second source video data when the work input unit 151 malfunctions.
When the work input unit 151 fails, the hot standby output unit 122 generates a second video according to the second control instruction and the first source video data. And generates a second video according to a second control command and second source video data when the work input unit 151 malfunctions.
By adopting the embodiment, hot standby of the input unit can be realized, and when the working input unit 151 fails, the hot standby input unit 152 replaces the working input unit 151 to continuously provide source video data for the output unit, so that the display equipment abnormality caused by the failure of the input unit is avoided.
An input unit in this context may refer to any circuit unit or device with input signal processing capabilities.
The way in which the output unit determines whether the work input unit 151 has a failure may be different according to application scenarios, and for example, in one possible embodiment, the work control unit 111 may detect whether the work input unit 151 has a failure, and send notification information to the work output unit 121 and the hot standby output unit 122 when detecting that the work input unit 151 has a failure, and the work output unit 121 and the hot standby output unit 122 confirm that the work input unit 151 has a failure when receiving the notification information.
In a possible embodiment, the device may further include a fault reporting unit, where the fault reporting unit sends the unit identifier of any unit to a preset user terminal when detecting that the unit fails. Wherein the cell identifier is used to identify a cell in the display device.
By adopting the embodiment, the user can quickly locate the failed unit according to the unit identifier so as to quickly take counter measures to eliminate the failure.
For more clearly explaining the real device provided by the embodiment of the present invention, refer to fig. 5, and fig. 5 is a schematic structural diagram of the real device provided by the embodiment of the present invention, where a control switch is used to implement interaction of control signals between different units, and a data switch is used to implement data interaction between different units.
The units in fig. 5 can refer to the related description, and are not described herein again.
In the above embodiments, all or part of the implementation may be realized by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from other embodiments, and the related parts may be referred to each other.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. A display device, characterized in that the display device comprises: the system comprises a work control unit, a work output unit, a hot standby output unit and a display unit, wherein the work output unit and the hot standby output unit have the same operation parameters;
the work control unit is used for generating a second control instruction which is the same as the first control instruction when the first control instruction for the work output unit is acquired; sending the first control instruction to the work output unit, and synchronously sending the second control instruction to the hot standby output unit, wherein the control instruction is used for controlling the output unit to decode the video;
the work output unit is used for generating a first video according to the first control instruction;
the hot standby output unit is used for generating a second video according to the second control instruction;
the display unit is used for displaying the first video when the work output unit does not have a fault; and displaying the second video when the work output unit fails.
2. The apparatus of claim 1, further comprising a working transmitter card, a hot standby transmitter card, and a receiver card, the working transmitter card and the hot standby transmitter card having the same operating parameters;
the work output unit is also used for sending the first video to the work sending card;
the hot standby output unit is further used for sending the second video to the hot standby sending card;
the receiving card is used for detecting whether the work transmitting card contains a video or not, and if the work transmitting card contains the video, the video in the work transmitting card is obtained; if the work sending card does not contain the video, acquiring the video in the hot standby sending card; sending the obtained video to the display unit;
the display unit is specifically configured to display the video sent by the receiving card.
3. The apparatus of claim 2, wherein the active transmitter card is powered differently than the hot standby transmitter card, and wherein the active output unit is powered differently than the hot standby output unit.
4. The apparatus of claim 1, further comprising a hot standby control unit;
and the hot standby control unit is used for replacing the working control unit to become a new working control unit when the working control unit fails.
5. The apparatus according to claim 4, wherein the operation control unit is further configured to send synchronization information to the hot standby control unit, where the synchronization information is used to indicate a parameter of the operation control unit;
and the hot standby control unit is also used for maintaining the parameter synchronization of the hot standby control unit and the parameter synchronization of the working control unit according to the synchronization information.
6. The device according to claim 4, wherein the active control unit is further configured to periodically send a heartbeat message to the hot standby control unit;
the hot standby control unit is specifically configured to replace the work control unit to become a new work control unit when the heartbeat message sent by the work control unit is detected to be overtime.
7. The apparatus of claim 4, wherein the active control unit is further configured to initialize as a new hot standby control unit after a failure and restart.
8. The apparatus of claim 1, further comprising a work input unit, a hot standby input unit, and a signal distributor, wherein the work input unit and the hot standby input unit have the same operating parameters;
the signal distributor is used for acquiring an input signal; the input signal is synchronously sent to the working input unit and the hot standby input unit;
the working input unit is used for generating first source video data according to the input signal;
the hot standby input unit is used for generating second source video data according to the input signal;
the work output unit is specifically configured to generate a first video according to the first control instruction and the first source video data when the work input unit is not in fault; when the work input unit breaks down, generating a first video according to the first control instruction and the second source video data;
the hot standby output unit is specifically configured to generate a second video according to the second control instruction and the first source video data when the work input unit fails; and when the work input unit has a fault, generating a second video according to the second control instruction and the second source video data.
9. The apparatus according to claim 8, wherein the work output unit generates a first video according to the first control instruction and the second source video data when the work input unit fails, and includes:
when receiving notification information sent by the work control unit, the work output unit generates a first video according to the first control instruction and the second source video data, wherein the notification information is sent by the work control unit when the work input unit is detected to have a fault;
when the working input unit fails, the hot standby output unit generates a second video according to the second control instruction and the second source video data, and the method includes:
and when receiving the notification information sent by the work control unit, the hot standby output unit generates a second video according to the second control instruction and the second source video data.
10. The device according to claim 1, further comprising a failure reporting unit, where the failure reporting unit is configured to send a unit identifier of any unit to a preset user terminal when detecting that the any unit fails.
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