CN113473072A - Audio and video monitoring system - Google Patents
Audio and video monitoring system Download PDFInfo
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- CN113473072A CN113473072A CN202010246947.6A CN202010246947A CN113473072A CN 113473072 A CN113473072 A CN 113473072A CN 202010246947 A CN202010246947 A CN 202010246947A CN 113473072 A CN113473072 A CN 113473072A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 41
- 238000012545 processing Methods 0.000 claims abstract description 35
- 238000004891 communication Methods 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims description 9
- 239000011159 matrix material Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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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
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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
- H04N5/2624—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 for obtaining an image which is composed of whole input images, e.g. splitscreen
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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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- Engineering & Computer Science (AREA)
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- Signal Processing (AREA)
- Closed-Circuit Television Systems (AREA)
Abstract
The invention provides an audio and video monitoring system, which relates to the field of audio and video monitoring, and comprises a front camera for acquiring audio and video signals; the decoder is used for receiving the audio and video signals and decoding the audio and video signals; the switcher is used for selecting the audio and video signals to output; the screen dividing device is used for carrying out screen dividing processing and coding processing on the video signal; the server is used for issuing a path selection instruction and a split screen control instruction and storing split screen signals; the monitoring terminal is used for carrying out access selection and split screen control on the audio and video signals; the server is in wireless communication connection with the switcher and the screen splitting device respectively, and meanwhile, a path selection instruction and a screen splitting control instruction are issued to the switcher and the screen splitting device. The invention solves the problems of low audio and video signal processing speed and display delay in the prior art, and solves the problems of signal interference and screen splitting disorder easily occurring during the screen splitting processing of the video signal.
Description
Technical Field
The invention relates to the field of audio and video monitoring, in particular to an audio and video monitoring system.
Background
With the development of audio and video encoding and decoding technology and network storage technology, the image data of the camera is digitized, and transmitted and stored on the Internet to form a digital video monitoring technology.
The audio and video monitoring technology is a key technology in an urban security system. The current audio and video monitoring system forms an integrated monitoring mode of 'simulation monitoring + network monitoring storage + comprehensive management'. The camera is an indispensable part of the monitoring system, and the video image quality is a key of the monitoring system. Through the development of recent years, the technology of the camera is rapidly developed, and the pixels of the camera are higher and higher. Meanwhile, the development of the monitoring market puts higher and higher requirements on the application of image quality, image splicing, large-screen display and the like. The large screen display means that a large screen is formed by arranging a plurality of displays, and each display displays a partial area of the whole image, so that the whole image can be displayed by arranging the plurality of displays in a combined manner.
In the existing audio and video monitoring system, a plurality of paths of cameras are used for collecting audio and video signals, the audio and video signals are transmitted to a matrix switcher through an IP network, the audio and video signals are managed and switched and controlled through the matrix switcher, the matrix switcher forms a state matrix by utilizing each path of input and each path of output, and under the condition of inputting the plurality of paths of signals, the matrix switcher can independently select one path or a plurality of paths of signal output according to needs, namely, the state of corresponding elements in the state matrix is changed, so that the selection of the signals is completed. The existing matrix switcher is an analog audio/video matrix switcher, and is mainly based on an analog audio/video switch and a matrix switcher, and a simple logic control circuit is additionally arranged to complete the selective output and switching of a plurality of paths of analog audio/video signals.
The existing audio and video monitoring system sequentially performs channel selection control and split screen control on a plurality of channels of audio and video signals and then displays the signals on a large screen, and when the channel selection control and the split screen control are sequentially performed on the audio and video, longer processing time is needed, so that the problems of low processing speed, display delay and the like of the existing audio and video monitoring system are caused, and the split screen images are easy to interfere and disorder.
Disclosure of Invention
In view of the above drawbacks of the prior art, an object of the present invention is to provide an audio/video monitoring system, which is used to solve the problems of slow processing speed of audio/video signals and display delay in the prior art, and solve the problems of signal interference and screen-splitting disorder easily occurring during the screen-splitting processing of video signals.
The invention provides an audio and video monitoring system, which comprises: the system comprises one or more front cameras for collecting one or more paths of audio and video signals; the decoder is used for receiving one path or multiple paths of audio and video signals and decoding the one path or multiple paths of audio and video signals; the switcher is used for selecting one path or multiple paths of audio and video signals to output; the screen divider is used for carrying out screen dividing processing and coding processing on one path or multiple paths of video signals; the server is used for issuing a path selection instruction and a split screen control instruction and storing one or more split screen signals; the monitoring terminal is used for carrying out channel selection and split screen control on one or more paths of audio and video signals; the server is in wireless communication connection with the switcher and the screen splitting device respectively, and meanwhile, a path selection instruction and a screen splitting control instruction are issued to the switcher and the screen splitting device.
The method comprises the steps of collecting one or more paths of video signals through one or more paths of front-facing cameras, and transmitting the one or more paths of video signals to a decoder for decoding; the method comprises the steps that a monitor terminal selects a channel and controls split screen, the channel selection instruction and the split screen control instruction are issued to a switcher and a split screen device through a server at the same time, a channel selection program is preloaded through the split screen device, and a split screen processing program and a coding processing program are preloaded through the split screen device, so that when audio and video signals are transmitted to the switcher and the split screen device in sequence, the switcher and the split screen device can rapidly perform corresponding processing, and the problems of low audio and video signal processing speed and display delay in the prior art are solved; and the screen splitting device is used for pre-loading a screen splitting processing program and a coding processing program, so that the problems of signal interference and screen splitting disorder easily occurring when video signals are subjected to screen splitting processing can be solved.
In an embodiment of the present invention, the system further includes a signal splitter, where the signal splitter includes a first communication interface, a second communication interface, and an adapter, the first communication interface is wirelessly connected to the one or more front cameras, the second communication interface is wirelessly connected to the decoder, and the first communication interface is connected to the second communication interface through the adapter.
In an embodiment of the present invention, the decoder includes a network data transmission module, a master controller, and one or more decoding modules, each decoding module corresponds to one or more data transmission channels; the main controller is used for controlling the network data transmission module to acquire one or more audio/video signals from the second communication interface of the signal separator and transmitting the one or more audio/video signals to the corresponding decoding module for decoding processing.
In an embodiment of the present invention, the switch receives a path selection instruction issued by the server, selects one or more audio/video signal paths according to the path selection instruction, and transmits corresponding audio/video signals to the screen splitter.
In an embodiment of the present invention, the screen splitter includes a screen splitting module and a coding module, and the screen splitting module receives a screen splitting control instruction issued by the server and performs screen splitting processing on one or more video signals according to the screen splitting control instruction; and the coding module is used for coding the video signal subjected to split screen processing to obtain coded data of each split screen area and transmitting the coded data to the server.
In an embodiment of the present invention, the split screen control instruction carries split screen mode information, and correspondence information between a split screen area and a decoder.
In an embodiment of the invention, when the encoding module encodes the video signal processed by split-screen processing, a time stamp is added to the encoded data.
In an embodiment of the present invention, the audio/video signal includes a front camera IP address, and the switcher identifies the front camera IP address included in the one or more paths of audio/video signals before the audio/video signal is selected.
As described above, the audio/video monitoring system of the present invention has the following beneficial effects: the method comprises the steps of collecting one or more paths of video signals through one or more paths of front-facing cameras, and transmitting the one or more paths of video signals to a decoder for decoding; the method comprises the steps that a monitor terminal selects a channel and controls split screen, the channel selection instruction and the split screen control instruction are issued to a switcher and a split screen device through a server at the same time, a channel selection program is preloaded through the split screen device, and a split screen processing program and a coding processing program are preloaded through the split screen device, so that when audio and video signals are transmitted to the switcher and the split screen device in sequence, the switcher and the split screen device can rapidly perform corresponding processing, and the problems of low audio and video signal processing speed and display delay in the prior art are solved; and the screen splitting device is used for pre-loading a screen splitting processing program and a coding processing program, so that the problems of signal interference and screen splitting disorder easily occurring when video signals are subjected to screen splitting processing can be solved.
Drawings
Fig. 1 is a block diagram illustrating a structure of an audio/video monitoring system disclosed in an embodiment of the present invention.
Fig. 2 is a block diagram illustrating an audio/video monitoring system with a splitter according to an embodiment of the present invention.
Fig. 3 is a block diagram showing the structure of the separator disclosed in the embodiment of the present invention.
Fig. 4 is a block diagram of a splitter and a decoder according to an embodiment of the present invention.
Fig. 5 is a block diagram of an audio/video monitoring system with a splitter and a decoder according to an embodiment of the present invention.
Fig. 6 is a block diagram showing a structure of an audio/video monitoring system with a splitter, a decoder, and a screen splitter disclosed in an embodiment of the present invention.
Fig. 7 is a flowchart illustrating an operation of the audio/video monitoring system disclosed in the embodiment of the present invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
Referring to fig. 1, the present invention provides an audio/video monitoring system, which includes one or more front cameras for collecting one or more audio/video signals; the decoder is used for receiving one path or multiple paths of audio and video signals and decoding the one path or multiple paths of audio and video signals; the switcher is used for selecting one path or multiple paths of audio and video signals to output; the screen divider is used for carrying out screen dividing processing and coding processing on one path or multiple paths of video signals; the server is used for issuing a path selection instruction and a split screen control instruction and storing one or more split screen signals; the monitoring terminal is used for carrying out channel selection and split screen control on one or more paths of audio and video signals; the server is in wireless communication connection with the switcher and the screen splitting device respectively, and meanwhile, a path selection instruction and a screen splitting control instruction are issued to the switcher and the screen splitting device.
Referring to fig. 7, in the present invention, one or more channels of audio/video signals are collected by one or more channels of front-facing cameras, and the one or more channels of video signals are transmitted to a decoder for decoding; the method comprises the steps that a monitor terminal selects a channel and controls split screen, the channel selection instruction and the split screen control instruction are issued to a switcher and a split screen device through a server at the same time, a channel selection program is preloaded through the split screen device, and a split screen processing program and a coding processing program are preloaded through the split screen device, so that when audio and video signals are transmitted to the switcher and the split screen device in sequence, the switcher and the split screen device can rapidly perform corresponding processing, and the problems of low audio and video signal processing speed and display delay in the prior art are solved; and the screen splitting device is used for pre-loading a screen splitting processing program and a coding processing program, so that the problems of signal interference and screen splitting disorder easily occurring when video signals are subjected to screen splitting processing can be solved.
The audio and video signals comprise a front camera IP address, and the switcher identifies the front camera IP address in one path or multiple paths of audio and video signals before the audio and video signals are selected, so that when the switcher selects the channel of the audio and video signals, the IP address contained in the channel selection instruction and the IP address contained in the audio and video signals are verified, and the audio and video signals with the same IP address as the channel selection instruction are selected.
Referring to fig. 2, the system further includes a demultiplexer, where the demultiplexer includes a first communication interface, a second communication interface, and an adapter, the first communication interface is connected to the one or more front cameras in a wireless communication manner, the second communication interface is connected to the decoder in a wireless communication manner, and the first communication interface is connected to the second communication interface through the adapter; referring to fig. 3, the first communication interface and the second communication interface are both 8-core network communication interfaces.
Referring to fig. 4 to 5, the decoder includes a network data transmission module, a Master Controller (MCU), and one or more decoding modules, each of which corresponds to one or more data transmission channels; the main controller is used for controlling the network data transmission module to acquire one or more audio/video signals from a second communication interface of the signal separator and transmitting the one or more audio/video signals to a corresponding decoding module for decoding processing; the audio and video signals of different signal channels are decoded by the plurality of decoding modules, so that the audio and video signal decoding speed can be improved in a limited way, and the monitoring real-time performance of the audio and video monitoring system is improved.
The switcher receives a channel selection instruction issued by the server, selects one or more audio/video signal channels according to the channel selection instruction, and transmits corresponding audio/video signals to the screen splitter.
Referring to fig. 6, the screen splitter includes a screen splitting module and a coding module, and the screen splitting module receives a screen splitting control instruction issued by the server and performs screen splitting processing on one or more video signals according to the screen splitting control instruction; and the coding module is used for coding the video signal subjected to split screen processing to obtain coded data of each split screen area and transmitting the coded data to the server.
The split screen control instruction carries split screen mode information and corresponding relation information of a split screen area and a decoder; therefore, the audio and video signals are subjected to split screen processing of the corresponding mode according to the split screen mode information and the corresponding relation information of the split screen area and the decoder.
When the coding module codes the video signal processed by split screen, a time stamp is added to the coded data; therefore, when the split-screen processed signals are displayed on a large screen, the tiled display can be rapidly performed through the time sequence.
In summary, the invention solves the problems of slow audio and video signal processing speed and display delay in the prior art, and solves the problems of signal interference and screen splitting disorder easily occurring when video signals are processed in a screen splitting manner. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. An audio-video monitoring system, the system comprising: the system comprises one or more front cameras for collecting one or more paths of audio and video signals; the decoder is used for receiving one path or multiple paths of audio and video signals and decoding the one path or multiple paths of audio and video signals; the switcher is used for selecting one path or multiple paths of audio and video signals to output; the screen divider is used for carrying out screen dividing processing and coding processing on one path or multiple paths of video signals; the server is used for issuing a path selection instruction and a split screen control instruction and storing one or more split screen signals; the monitoring terminal is used for carrying out channel selection and split screen control on one or more paths of audio and video signals; the server is in wireless communication connection with the switcher and the screen splitting device respectively, and meanwhile, a path selection instruction and a screen splitting control instruction are issued to the switcher and the screen splitting device.
2. An audio-visual monitoring system according to claim 1, characterised in that: the system further comprises a signal separator, wherein the signal separator comprises a first communication interface, a second communication interface and an adapter, the first communication interface is in wireless communication connection with one or more front cameras, the second communication interface is in wireless communication connection with a decoder, and the first communication interface is connected with the second communication interface through the adapter.
3. An audio-visual monitoring system according to claim 2, characterised in that: the decoder comprises a network data transmission module, a master controller and one or more decoding modules, wherein each decoding module corresponds to one or more data transmission channels; the main controller is used for controlling the network data transmission module to acquire one or more audio/video signals from the second communication interface of the signal separator and transmitting the one or more audio/video signals to the corresponding decoding module for decoding processing.
4. An audio-visual monitoring system according to claim 1, characterised in that: the switcher receives a channel selection instruction issued by the server, selects one or more audio/video signal channels according to the channel selection instruction, and transmits corresponding audio/video signals to the screen splitter.
5. An audio-visual monitoring system according to claim 1, characterised in that: the screen splitting device comprises a screen splitting module and a coding module, wherein the screen splitting module receives a screen splitting control instruction sent by the server and performs screen splitting processing on one or more video signals according to the screen splitting control instruction; and the coding module is used for coding the video signal subjected to split screen processing to obtain coded data of each split screen area and transmitting the coded data to the server.
6. An audio-visual monitoring system according to claim 5, characterised in that: the split screen control instruction carries split screen mode information and corresponding relation information of a split screen area and a decoder.
7. An audio-visual monitoring system according to claim 5, characterised in that: and when the coding module codes the video signal processed by the split screen, a time stamp is added to the coded data.
8. An audio-visual monitoring system according to claim 1, characterised in that: the audio and video signals comprise a front camera IP address, and the switcher identifies the front camera IP address in one path or multiple paths of audio and video signals before the audio and video signals are selected.
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| CN202010246947.6A CN113473072A (en) | 2020-03-31 | 2020-03-31 | Audio and video monitoring system |
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| CN202010246947.6A CN113473072A (en) | 2020-03-31 | 2020-03-31 | Audio and video monitoring system |
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| US4961211A (en) * | 1987-06-30 | 1990-10-02 | Nec Corporation | Television conference system including many television monitors and method for controlling the same |
| KR20000008763A (en) * | 1998-07-15 | 2000-02-15 | 윤종용 | Divisional screen output device for a cctv system |
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