CN104320706A - Radio and television monitoring method - Google Patents
Radio and television monitoring method Download PDFInfo
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- CN104320706A CN104320706A CN201410646247.0A CN201410646247A CN104320706A CN 104320706 A CN104320706 A CN 104320706A CN 201410646247 A CN201410646247 A CN 201410646247A CN 104320706 A CN104320706 A CN 104320706A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000012545 processing Methods 0.000 claims abstract description 14
- 239000000284 extract Substances 0.000 claims abstract description 7
- 230000003111 delayed effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
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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
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44236—Monitoring of piracy processes or activities
-
- 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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
-
- 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
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Computer Security & Cryptography (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Virology (AREA)
- Computer Networks & Wireless Communication (AREA)
- Databases & Information Systems (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
The invention discloses a radio and television monitoring method. The method includes the following steps that an antenna unit receives radio and television signals, and the radio and television signals are input to television receivers respectively through a television distributor; the television receivers demodulate the radio and television signals respectively and input the radio and television signals to a video server; the video server conducts video recording and sound recording on the input radio and television signals, and the radio and television signals are input in a signal processing module; the signal processing module extracts out vertical synchronization signals in the input radio and television signals, the radio and television signals are delayed, 'and' processing is conducted on the radio and television signals and the vertical synchronization signals, and the result is input to a judgment module; the judgment module judges the input 'and' processing result, if the result is a straight line, no illegal signal interference is generated, and if the result is a series of pulse signals, illegal signal interference is generated and an alarm is given. According to the method, multiple channels of radio and television programs can be monitored in real time, and video recording and sound recording are conducted on the monitored programs.
Description
Technical field
The present invention relates to broadcast television monitoring field, particularly relate to a kind of broadcast television monitoring method.
Background technology
Society, it is a kind of very important communications media that radio and television are done.Broadcast television signal transmission network is national important basic network, and due to features such as its public property, openings, broadcast television signal is easily interfered in the transmission.In recent years, along with developing rapidly of science and technology, aerial all kinds of electric wave increases sharply, and transmitting power is increasing, and the kind of interference signal gets more and more, also increasing on the normal transmission impact of broadcast television signal.Lawless person attacks the normal broadcast having a strong impact on radio and television to the illegal signals of radio and television simultaneously, if illegal signals and other program broadcast in violation of rules and regulations, can cause larger negative effect.Therefore, impact to prevent interference signal, illegal signals and other normal broadcast of violation program to radio and television, need to monitor radio and television, so that Timeliness coverage interference or illegal signals and other in violation of rules and regulations program, and it is checked and gets rid of.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of broadcast television monitoring method is provided, realize carrying out Real-Time Monitoring to multi-channel radio and television program, and monitored program is recorded a video and recorded.
The object of the invention is to be achieved through the following technical solutions: a kind of broadcast television monitoring method, it comprises the following steps:
S1. antenna element receives broadcast television signal, and by TV distributor, broadcast television signal is inputted each television receiver respectively;
S2. each television receiver carries out demodulation to broadcast television signal respectively, then respectively by the broadcast television signal input video server after demodulation;
S3. the broadcast television signal of video server to input is recorded a video and is recorded, and forms independently disk audio-video document, and by broadcast television signal input signal processing module;
S4. signal processing module extracts the vertical synchronizing signal in the broadcast television signal of input, by broadcast television signal time delay, then broadcast television signal and vertical synchronizing signal is carried out and process, and will input judge module with result; Judge module to input and result judge, if result is a straight line, be judged as without illegal signal disturbing; If result is a series of pulse signal, be then judged as that illegal signals disturbs and reports to the police, thus realized the real-time monitoring to program.
Described step S2 comprises following sub-step:
S21. the channel that will monitor of upper computer selecting, send comprise channel information network signal to signal converter;
S22. signal converter transfers the network signal of input to I/O signal, and I/O signal is inputted each television receiver;
S23. each television receiver identifies the channel information in the I/O signal of input respectively, selects the demodulation channel of self;
S24. each television receiver carries out demodulation to broadcast television signal respectively, then respectively by the broadcast television signal input video server after demodulation.
Described step S4 comprises following sub-step:
S41. Signal separator submodule extracts the video vertical synchronization signal in the broadcast television signal that sends over of video signal preprocessor, then broadcast television signal is inputted comparison sub-module, by video vertical synchronization signal input time delay submodule;
S42. the video vertical synchronization signal of time delay submodule to input carries out delay process, then by video vertical synchronization signal input comparison sub-module;
S43. comparison sub-module carries out "AND" process to the broadcast television signal of input and video vertical signal, and result is inputted judge module.
S44. trigger submodule receives comparison sub-module sends and result, if be straight line with result, then trigger submodule does not activate, and its output is set to low level; If be a series of pulse signal with result, then trigger submodule activates, and its output is set to high level, and is inputted by high level in buffer sublayer module;
S45. processor submodule is opened buffer sublayer module by hardware address and is obtained data, determines whether illegal signals interference, if low level, is then judged as without illegal signal disturbing; If high level has then been judged as that illegal signals disturbs, and send alarm code to host computer, host computer is reported to the police, close after then buffer sublayer module being reset.
The invention has the beneficial effects as follows:
The present invention realizes carrying out Real-Time Monitoring to multi-channel radio and television program, and records a video to monitored program and record.
Accompanying drawing explanation
Fig. 1 is the flow chart of broadcast television monitoring method of the present invention;
Fig. 2 is the system block diagram of broadcast television monitoring method of the present invention;
Fig. 3 is the circuit structure diagram of the television monitoring unit in the present invention;
Fig. 4 is the circuit structure diagram of the control unit in the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail, but protection scope of the present invention is not limited to the following stated.
As shown in Figure 1, a kind of broadcast television monitoring method, is characterized in that: it comprises the following steps:
S1. antenna element receives broadcast television signal, and by TV distributor, broadcast television signal is inputted each television receiver respectively;
S2. each television receiver carries out demodulation to broadcast television signal respectively, then respectively by the broadcast television signal input video server after demodulation;
S3. the broadcast television signal of video server to input is recorded a video and is recorded, and forms independently disk audio-video document, and by broadcast television signal input signal processing module;
S4. signal processing module extracts the vertical synchronizing signal in the broadcast television signal of input, by broadcast television signal time delay, then broadcast television signal and vertical synchronizing signal is carried out "AND" process, and by "AND" result input judge module; The "AND" result of judge module to input judges, if result is a straight line, is judged as without illegal signal disturbing; If result is a series of pulse signal, be then judged as that illegal signals disturbs and reports to the police, thus realized the real-time monitoring to program.
Described step S2 comprises following sub-step:
S21. the channel that will monitor of upper computer selecting, send comprise channel information network signal to signal converter;
S22. signal converter transfers the network signal of input to I/O signal, and I/O signal is inputted each television receiver;
S23. each television receiver identifies the channel information in the I/O signal of input respectively, selects the demodulation channel of self;
S24. each television receiver carries out demodulation to broadcast television signal respectively, then respectively by the broadcast television signal input video server after demodulation.
Described step S4 comprises following sub-step:
S41. Signal separator submodule extracts the video vertical synchronization signal in the broadcast television signal that sends over of video signal preprocessor, then broadcast television signal is inputted comparison sub-module, by video vertical synchronization signal input time delay submodule;
S42. the video vertical synchronization signal of time delay submodule to input carries out delay process, then by video vertical synchronization signal input comparison sub-module;
S43. comparison sub-module carries out "AND" process to the broadcast television signal of input and video vertical signal, and result is inputted judge module.
S44. trigger submodule receives the "AND" result that comparison sub-module sends, if "AND" result is straight line, then trigger submodule does not activate, and its output is set to low level; If "AND" result is a series of pulse signal, then trigger submodule activates, and its output is set to high level, and is inputted by high level in buffer sublayer module;
S45. processor submodule is opened buffer sublayer module by hardware address and is obtained data, determines whether illegal signals interference, if low level, is then judged as without illegal signal disturbing; If high level has then been judged as that illegal signals disturbs, and send alarm code to host computer, host computer is reported to the police, close after then buffer sublayer module being reset.
As shown in Figure 2, a kind of broadcast television monitoring system, it comprises antenna element, radio and television Play System, television monitoring unit and control unit, the input of television monitoring unit is connected with the output of antenna element, the output of television monitoring unit is connected with the input of radio and television Play System, and television monitoring unit is also connected with control unit.
As shown in Figure 3, television monitoring unit comprises TV distributor, at least one television receiver, signal converter and video server, the signal input of TV distributor is connected with the output of antenna element, the signal of TV distributor exports and is connected with the signal input of television receiver, the audio frequency output of television receiver inputs with the audio frequency of video server respectively with video frequency output and video input is connected, video server is also connected with control unit and carries out exchanges data, the control input end of signal converter is connected with the control output end of control unit, the control output end of signal converter is connected with the control input end of television receiver.
Described television monitoring unit also comprises power module, the input of described power module is connected with ups power by mains switch, power module is AC-DC power module, the 220V AC power input that ups power provides by this power module is converted to+5V and exports with the power supply of+12V, + the 5V of power module exports and is connected with power supply indicator, and+the 12V of power module exports and is connected with television receiver and video server respectively.
Described broadcast television monitoring system also comprises display unit, and described display unit is connected with video server by VGA video interface.
Described television receiver comprises one or more the combination in analog television receiver and digital television receiver.
Described digital television receiver is CMMB receiver, and described signal converter is that IO turns network interface module.
Described television monitoring unit also comprises network interface A and network interface B, and described video server is connected with control unit by network interface A, and described signal converter is connected with control unit by network interface B.
5 road TV distributors selected by described TV distributor, and wherein three tunnels export and are connected with the input of three analog television receivers respectively, and a road exports and is connected with the input of digital television receiver, and a road exports and is connected with the input of radio and television Play System.
Described signal converter is that IO turns network interface module, the network signal that control unit inputs is converted to I/O signal, and I/O signal is outputted to analog television receiver and digital television receiver respectively.
Described analog television receiver selects the quick lt291hd in sky, carries out demodulation, and the signal after demodulation is outputted to video server to the analog signal of TV distributor input.
Described digital television receiver selects Huayang CMMB TV box, carries out demodulation, and the signal after demodulation is outputted to video server to the CMMB digital signal of TV distributor input.
Described video server possesses network self-adapting technology, automatically video frame rate is adjusted according to the network bandwidth, support multiple RECORD mode: manually, regularly, mobility detect and warning video recording, possesses sound video recording log query function, the multiple safety guarantee function such as the inspection of system lock, press key locking, password, multi-stage user mandate.
As shown in Figure 4, described control unit comprises signal processing module, discrimination module and host computer, the input of signal processing module is connected with the output of video server by network interface A, the output of signal processing module is connected with the input of judge module, the output of judge module is connected with host computer, and host computer is connected with video server and signal converter respectively.
Described signal processing module comprises Signal separator submodule, signal lag submodule and signal comparison sub-module, the input of Signal separator submodule is connected with the output of video server by network interface A, the output of Signal separator submodule is divided into two-way, be connected with the input of signal lag submodule and signal comparison sub-module respectively, the output of signal lag submodule is connected with the input of signal comparison sub-module, and the output of signal comparison sub-module is connected with the input of judge module.
Described judge module comprises processor submodule, decoding submodule, trigger submodule and buffer sublayer module, the input of trigger submodule is connected with the output of signal comparison sub-module, the output of trigger submodule is connected with the input of buffer sublayer module, buffer sublayer module is connected with decoding submodule, decoding submodule is connected with processor submodule, the control of processor submodule exports and is connected with the control inputs of signal comparison sub-module and buffer sublayer module respectively, and the output of processor submodule is connected with host computer.
Described Signal separator submodule is made up of LM1881.
Described signal lag submodule is made up of C4098.
Described signal comparison sub-module is made up of 74HC08.
Described buffer sublayer module is made up of 74HC244.
Described decoding submodule is made up of 74HC138.
Described trigger submodule is made up of 74HC74.
Described processor submodule is made up of MCS8031.
Claims (3)
1. a broadcast television monitoring method, is characterized in that: it comprises the following steps:
S1. antenna element receives broadcast television signal, and by TV distributor, broadcast television signal is inputted each television receiver respectively;
S2. each television receiver carries out demodulation to broadcast television signal respectively, then respectively by the broadcast television signal input video server after demodulation;
S3. the broadcast television signal of video server to input is recorded a video and is recorded, and forms independently disk audio-video document, and by broadcast television signal input signal processing module;
S4. signal processing module extracts the vertical synchronizing signal in the broadcast television signal of input, by broadcast television signal time delay, then broadcast television signal and vertical synchronizing signal is carried out and process, and will input judge module with result; Judge module to input and result judge, if result is a straight line, be judged as without illegal signal disturbing; If result is a series of pulse signal, be then judged as that illegal signals disturbs and reports to the police, thus realized the real-time monitoring to program.
2. a kind of broadcast television monitoring method according to claim 1, is characterized in that: described step S2 comprises following sub-step:
S21. the channel that will monitor of upper computer selecting, send comprise channel information network signal to signal converter;
S22. signal converter transfers the network signal of input to I/O signal, and I/O signal is inputted each television receiver;
S23. each television receiver identifies the channel information in the I/O signal of input respectively, selects the demodulation channel of self;
S24. each television receiver carries out demodulation to broadcast television signal respectively, then respectively by the broadcast television signal input video server after demodulation.
3. a kind of broadcast television monitoring method according to claim 1, is characterized in that: described step S4 comprises following sub-step:
S41. Signal separator submodule extracts the video vertical synchronization signal in the broadcast television signal that sends over of video signal preprocessor, then broadcast television signal is inputted comparison sub-module, by video vertical synchronization signal input time delay submodule;
S42. the video vertical synchronization signal of time delay submodule to input carries out delay process, then by video vertical synchronization signal input comparison sub-module;
S43. comparison sub-module is carried out and process the broadcast television signal of input and video vertical signal, and result is inputted judge module;
S44. trigger submodule receives comparison sub-module sends and result, if be straight line with result, then trigger submodule does not activate, and its output is set to low level; If be a series of pulse signal with result, then trigger submodule activates, and its output is set to high level, and is inputted by high level in buffer sublayer module;
S45. processor submodule is opened buffer sublayer module by hardware address and is obtained data, determines whether illegal signals interference, if low level, is then judged as without illegal signal disturbing; If high level has then been judged as that illegal signals disturbs, and send alarm code to host computer, host computer is reported to the police, close after then buffer sublayer module being reset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410646247.0A CN104320706A (en) | 2014-11-15 | 2014-11-15 | Radio and television monitoring method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410646247.0A CN104320706A (en) | 2014-11-15 | 2014-11-15 | Radio and television monitoring method |
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| CN104320706A true CN104320706A (en) | 2015-01-28 |
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| CN201410646247.0A Pending CN104320706A (en) | 2014-11-15 | 2014-11-15 | Radio and television monitoring method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110324675A (en) * | 2019-06-26 | 2019-10-11 | 航天恒星科技有限公司 | The method and apparatus that signal quality monitoring is carried out to satellite broadcasting television system |
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