CN105228004B - A kind of digital TV contents monitoring method and its digital TV contents monitor system - Google Patents
A kind of digital TV contents monitoring method and its digital TV contents monitor system Download PDFInfo
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- CN105228004B CN105228004B CN201510560336.8A CN201510560336A CN105228004B CN 105228004 B CN105228004 B CN 105228004B CN 201510560336 A CN201510560336 A CN 201510560336A CN 105228004 B CN105228004 B CN 105228004B
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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
- H04N21/44204—Monitoring of content usage, e.g. the number of times a movie has been viewed, copied or the amount which has been watched
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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
- H04N21/4425—Monitoring of client processing errors or hardware failure
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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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/8549—Creating video summaries, e.g. movie trailer
Abstract
The present invention monitors a kind of method about digital TV contents, step is: receiving the TS comprising monitored program in reference monitoring station, the abstract of program view, audio PES load is calculated separately, and forms PES summary information together with the PTS that PES is carried, is sent to monitoring station；The TS comprising monitored program is received in monitoring station, calculates separately the abstract of program view, audio PES load, and be formed together PES summary information with the PES PTS carried；It is matched the PES summary information for referring to monitoring station is received with local PES summary information in monitoring station according to PTS, and the abstract of the PES load in two PES summary informations being matched to is compared, if equal, then the program of monitoring station monitoring is consistent with the content of program with reference to monitoring station monitoring, and otherwise programme content is inconsistent.
Description
Technical field
The present invention relates to the digital television program content monitoring technology of digital broadcast television industry, in particular to one kind is based on
Encapsulate digital television program content monitoring method and system that the abstract of basic flow (PES) load compares.
Background technique
Currently, transmission/broadcast digital TV programme network can be roughly divided into two classes, respectively radio and television radio network and
Broadcast television transmissions net.
Radio and television radio network refers to the television network broadcast television program broadcasting to end user, the operation of the network
Quotient directly serves in end user, mainly there is the broadcast electricity such as cable tv broadcast network, ground TV broadcast network, direct broadcast satellite
View network.Currently, generally there is cable TV network in each city in China, and general all with independent digital TV front-end system
System.
Broadcast television transmissions net refers to that the broadcast TV program that TV station is broadcasted is transferred to various regions radio and television radio network
Transmission network, at present carry out broadcast TV program transmission network mainly have transmission network, SDH transmission network etc..
A set of digital television program broadcasted from TV station is received to final spectators, generally to pass through broadcast television transmissions net
Transmission, radio and television radio network broadcast the two processes.One digital television program by compressed encoding passes through broadcast first
Television transmission network is transferred to radio and television radio network, and the digital front-end system of radio and television radio network is to receiving DTV
Program is modulated to radio and television radio network after performing some processing, to be broadcast to end user.
Digital television program can be transferred to radio and television radio network by a variety of transmission modes, and such as: satellite TV's program passes through
Transmission network is transferred to cable tv broadcast network, and then cable tv broadcast net front end is modulated to after necessary processing
Cable tv broadcast network, to be broadcast to end user, as shown in Figure 1.It is same by the digital television program of the path transmission
Sample can also be by being modulated to ground digital television broadcast net after ground digital front-end processing, to be broadcast to end user；In
The digital television program of centre broadcast TV program covered ground can also be transmitted by satellite, see Fig. 2.
Digital television program can also be transferred to cable tv broadcast network by SDH network, then cable tv broadcast
Network front end is modulated to cable tv broadcast network after necessary processing, to be broadcast to end user, sees Fig. 3；Pass through
The digital television program of the path transmission equally can also be wide by being modulated to terrestrial DTV after ground digital front-end processing
Net is broadcast, to be broadcast to end user.
Digital television program encodes the audio stream to form encoded video stream and coding, the video of coding by video and audio compress
Stream and audio stream are encapsulated into PES as defined in GB/T17975-1 first, form video PES and audio PES；Then video PES and
Audio PES is encapsulated into respectively in the TS packet as defined in GB/T17975-1, and forms transport stream (TS).Each number in TS
TV programme all have a Program Clock Reference (PCR), resolution ratio 27MHz；In order to realize what video and audio played
It is synchronous, PTS can be carried in the packet header of audio PES packet and the packet header of video PES packet, PTS resolution ratio is 27MHz/300=90KHz,
PTS is the clock based on PCR, be to PCR clock division be 90KHz after counting；Player is broadcast respectively according to the value of PTS
Put video and audio.Transmission/broadcast digital television program is flowed in broadcast television transmissions net and radio and television radio network with TS
Mode transmitted.
After radio and television radio network receives the TS stream of program from broadcast television transmissions network (such as: satellite or SDH), one
As to carry out demodulating/solving the processing links such as adaptation, decryption, multiplexing, encryption, modulation, these processing links may cause program mistake
Code, causes to damage to program.
Digital television program is in the transmission of broadcast television transmissions net, the front-end processing of radio and television radio network, radio and television broadcast
May occur during net broadcast error of transmission, by artificial change, by malicious attack situations such as.Therefore, have each to the whole nation
The program broadcasted in a radio and television radio network is monitored, to determine demand that whether broadcast TV program normally broadcasts.
System description is monitored at present: as described above, the TS of program flows in the transmission process of transmission network and radio and television are wide
Broadcast the processing of net, in broadcasting process, the TS of program may be carried out the following processing: multiplex/demultiplex, encryption/decryption, modulation/
Demodulation etc..These processing links may cause the modification of program TS stream information.These modify the prison so that digital television program
Survey becomes difficult.Currently, monitoring system is generally made of monitoring front end and mechanism for monitoring transaction processing system, the deployment of monitoring front end
Each radio and television radio network in various regions, mechanism for monitoring transaction processing system are generally deployed in mechanism for monitoring location.It is existing
The schematic diagram of Monitoring System for Cable DTV is as shown in figure 4, monitoring front end is generally deployed in monitored cable network covering
In region, monitoring front end is responsible for acquiring the TS of the digital television program of monitored cable network broadcast, carries out TS system layer index
It is low bit-rate video stream (general transcoding is 1Mbps) monitored digital television program content transcode after monitoring, then by special
Net passes back to the transaction processing system of regulatory agency；The transaction processing system of regulatory agency needs to replay these low bit- rates
Program, and whether gone wrong by the programme content that staff's artificial judgment is monitored the broadcast of network.
Current digital TV contents monitoring has the following problems: 1) due to needing after program is recompiled by special
Net passes back to the transaction processing system of mechanism for monitoring from place remote, even if largely being compressed, a general program
The transmission bandwidth that mechanism for monitoring needs 1Mbps or so is passed back to from a radio and television radio network.If mechanism for monitoring needs pair
The broadcast in national 300 radio and television radio networks of 10 digital television programs is broadcasted situation and is monitored, then needs 10 × 300
The transmission bandwidth of × 1Mbps=3Gbps.Therefore, existing content monitoring system needs to occupy biggish network bandwidth, in network
Monitoring capability is very limited in the case where limited bandwidth resources.Even if 2) do not consider the limitation of transmission bandwidth, mechanism for monitoring
Be also required to artificial or program auxiliary to judge these encoded videos: whether this 10 × 300=3000 real-time videos are sent out
Whether whether raw error of transmission, programme content occur artificially changes, occurs for program malicious attack situation.This will be expended greatly
Measure manpower and computing resource.
Summary of the invention
The present invention can save the transmission bandwidth of a large amount of monitoring programme content passback while largely reduce artificial participation,
To greatly increase the ability of digital TV contents monitoring, reduce system Construction cost and operation cost.
As described above, the TS of program flows in the transmission process of transmission network and the processing of radio and television radio network, broadcast electricity
Depending on that in the broadcasting process of radio network, may carry out the following processing link to the TS of program: demodulation, multiplexing, encryption, is adjusted at decryption
System etc., the modification of the following information of TS packet where these processing links may cause program: the modification of TS packet PID, TS packet adaptation
The modification of the field of PCR, modification, the modification of the packet header TS continuous counter value of the packet header TS scrambling field etc. in domain.While program
Program_number may also be modified.But there is no change the load for being encapsulated in PES packet in TS packet for these treatment processes.
Hence, it can be determined that a monitored network, which makes reference monitored network, (is typically chosen broadcast television transmissions network as reference
Monitored network), other broadcasting networks that need to be monitored are monitored network (generally radio and television radio network).Ratio can be passed through
The load of the PES packet of relatively monitored network transmission/broadcast digital TV program whether with reference to being monitored network transmission/broadcast
Whether the load of the corresponding PES of digital television program is identical, so that it may determine digital television program in monitored Web broadcast/biography
Whether defeated programme content is identical as with reference to monitored transmission/broadcast programme content of network；If identical, as long as concentrating people
Power resource and computing resource monitoring do not have to reference to the digital TV contents of monitored network transmission/broadcast using a large amount of
The digital television program content that human resources, bandwidth resources and computing resource broadcast all radio and television broadcasting networks is supervised
It surveys.
In the present invention, receiving and the monitoring system monitored with reference to monitored network is defined as connecing with reference to monitoring station
It receives and the monitoring system for monitoring other monitored networks defines monitoring station.
But there is following two in the load of directly relatively PES: a) since it is desired that monitoring multiple radio and television simultaneously
The digital television program of broadcasting network broadcast, if the directly relatively load of the monitored website PES packet of monitoring station and reference, needs
Come, reference is pushed in the load of the PES packet of the monitored digital program of monitoring station reception, and with from reference monitoring station
The load of the PES packet of the received monitored digital television program of monitoring station is compared, this needs more large transmission bandwidth.Therefore it needs
Figure out how the whole loads for not having to transmission PES packet can compare two corresponding PES packets load whether equal problem.B)
PES packet corresponds to, be through excessive since digital television program is by the transmission of broadcast television transmissions net and the broadcast of radio and television radio network
A processing links, thus, different monitored nets may have different delays；Simultaneous computer data are transmitted by different IP
Network, different distance strange land transmission when, there is also different delayed times；Therefore, comparing PES load using computer progress strange land is
When no identical, need to solve the problems, such as that PES packet is corresponding, i.e., the digital television program PES packet that receives of monitoring station how with ginseng
It examines monitoring station and receives the problem of digital television program PES packet is corresponded.
Single width is occupied for being directly compared needs to the PES load of reference monitoring station and monitoring station in problem a)
The problem of, the invention proposes calculating separately the abstract for receiving PES load with reference to monitoring station and monitoring station, and to calculating
The method that is compared of abstract, specifically: receive monitored DTV section respectively in reference monitoring station and monitoring station
Purpose TS, and hash calculating is carried out to the load of the PES of the program received respectively by a hashing algorithm, calculate one
The abstract (hashing algorithm difference length of summarization may also be different, if the MD5 length of summarization for being is 16 bytes) of a regular length,
If the abstract of two PES load is identical, it can determine that the two PES load is identical.Therefore, in monitoring station and ginseng
The abstract that PES load is transmitted between monitoring station is examined, it is whether identical by comparison abstract, that is, it can determine monitoring station and with reference to prison
Whether the programme content that survey station point is monitored is identical；And the summary data length loaded is fixed, and data volume is few compared to PES load
Very much: assuming that being divided into 480 milliseconds, video code rate 5Mbps, audio code rate position 192Kbps between the PES of carrying PTS, hash is calculated
Method uses MD5, then video PES load is the byte of 5Mbps/8=625000 in 1 second, and the load of audio PES is 24000 words in 1 second
Section, and the MD5 digest of video and audio is then respectively 16 × (1000/480)=34 byte.
For with reference to the problem of PES packet corresponds between monitoring station and monitoring station, leading in the present invention in problem b)
The PTS for comparing the carrying of the head PES is crossed, PES is corresponding if PTS is identical.Digital television program it is demodulated, demultiplex
With/there is no modification PTS in processing links for multiplexing, scrambling, modulation, descrambling etc., therefore can be carried by comparing the packet header PES
Whether PTS is identical to be realized monitoring station and the one-to-one correspondence with reference to PES packet between monitoring station.In the packet header PES PTS be can word selection
Section, therefore some PES may not carry PTS field, not carry the PES packet of PTS for head, it can its load is additional to the end
PES packet load subsequent calculations abstract of one head with PTS.
Based on principles above, a kind of digital television monitoring method includes the following steps: step 1: one radio and television of selection
Transmission network/radio network is with reference to monitored network, and deployment refers to monitoring station, other can transmit/broadcast the same DTV
Transmission network/radio network of program is monitored network, disposes monitoring station；Step 2: in reference monitoring station, receiving includes quilt
The TS of digital television program n is monitored as reference source, what the abstract and audio PES for calculating the video PES load of program n loaded
Abstract；Calculate PES load abstract can be used hashing algorithm (or being hash algorithm) include but is not limited to MD2, MD4,
MD5,SHA1,SHA256,SHA384,SHA512,Snefru,N-Hash,RIPE-MD,HAVAL；Meanwhile in each monitoring station
Point receives the TS comprising monitored digital television program n, calculates program n with hashing algorithm identical with reference monitoring station
Video PES load abstract and audio PES load abstract.Step 3: defining a PES summary information, PES summary information
At least there are three elements: an abstract loaded for PES, two be PTS entrained by PES, when the head PES does not carry PTS PES
Load be successively attached to the last one carry PTS PES load after calculate abstract, three be PES label, need to have program ID and
Type (video or audio) information of PES；Step 4: in reference monitoring station and each monitoring station, step 2 being calculated
PES load abstract according to step 3 method be respectively formed audio PES summary information and video PES summary information；Step 5: reference
The PES summary information of program n is sent to all monitoring stations by monitoring station, and PES summary information can be transmitted by IP network,
But it is not limited to IP network；All phases can be transferred directly to from reference monitoring station with reference to the PES summary information of monitoring station
Monitoring station is closed, a unified message center can also be first sent, each monitoring station is then forwarded to by message center；Step
Rapid 6: after monitoring station receives the PES summary information with reference to monitoring station, being searched in local PES summary information same
PES summary information in program ID with same type, identical pts value；Step 7: the PES abstract being matched in comparison step 6
Whether the abstract that PES is loaded in message is identical as the abstract of PES load in the PES summary information that reference monitoring station is sent, such as
Fruit is not identical, then mistake occurs for program transmission/broadcasting process, to trigger monitoring error handler；If identical, the prison
The PES content of network transmission/broadcast digital television program is consistent with reference to monitoring station where survey station point.
Detailed description of the invention
Fig. 1 typical case satellite TV program satellite transmits wired broadcasting schematic diagram.
The center Fig. 2 covers program satellite and transmits terrestrial broadcasting schematic diagram.
The typical non-satellite TV's program SDH of Fig. 3 transmits wired broadcasting schematic diagram.
The existing monitoring system schematic that the satellite TV's program for transmitting cable network broadcast by satellite is monitored of Fig. 4.
The typical case to the program monitoring for transmitting cable network broadcast by satellite that Fig. 5 is implemented according to the method for the present invention
Exemplary diagram.
Fig. 6 is the flow chart according to the method for the present invention embodiment.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.The explanation is exemplary
, for explaining only the invention, and it is not construed as limiting the claims.
Method of the invention can be adapted for any TV transmission network, digital TV broadcasting network, including but not
It is limited to broadcast satellite transmission network, radio and television cable radio network, radio and television broadcasting satellite, Web TV, ground electricity
Depending on radio network, SDH broadcast television transmissions backbone network.The present invention is i.e. suitable for the TS system the broadcast transmission process of DTV
The case where layer relevant field changes, is also applied for the case where TS system layer field does not change.Described below hair
Bright embodiment is carried out by taking the monitoring that satellite TV's program is broadcasted from transmission network to cable tv broadcast net as an example.
This one embodiment according to the present invention provides a kind of monitoring method referring to Fig. 5, includes the following steps: to walk
Rapid 1: selecting a broadcasting satellite transmission network 504 for reference to monitored network, deployment refers to monitoring station 522, other broadcast are same
Cable tv broadcast net 521-1 ~ 521-n of one digital television program is to be monitored network, deployment monitoring station 523-1 ~
523-n；Step 2: in reference monitoring station 522, receiving the TS comprising monitored program n, the video PES for calculating program n is negative
The abstract of abstract and audio the PES load of load；Hashing algorithm (or being hash algorithm) can be used in the abstract for calculating PES load
Including but not limited to MD2, MD4, MD5, SHA1, SHA256, SHA384, SHA512, Snefru, N-Hash, RIPE-MD,
HAVAL；Meanwhile receive the TS comprising monitored digital television program n in each monitoring station, with reference monitoring station
Identical hashing algorithm calculates the abstract of the video PES load of program n and the abstract of audio PES load.Step 3: defining one
A PES summary information, at least there are three elements for PES summary information: an abstract loaded for PES, and two is entrained by PES
PTS is successively attached to PES load to calculate after the PES load that the last one carries PTS and pluck when the head PES does not carry PTS
It wants, three be the label of PES, need to there is type (video or audio) information of program ID and PES；Step 4: in reference monitoring station
With each monitoring station, the PES load abstract that step 2 calculates is respectively formed audio PES summary information according to step 3 method
With video PES summary information；Step 5: the PES summary information of program n is sent to all monitoring stations with reference to monitoring station,
PES summary information can be transmitted by IP network, but be not limited to IP network；It can be PES summary information with reference to monitoring station
It is sent to a unified message center 512-1, each monitoring station is then forwarded to by message center；Step 6: monitoring station
After receiving the PES summary information with reference to monitoring station, searching in the same program ID in local PES summary information has
The PES summary information of same type, identical pts value；Step 7: PES is loaded in the PES summary information being matched in comparison step 6
Abstract whether with reference monitoring station send PES summary information in PES load abstract it is identical, if it is not the same, then saving
In cable tv broadcast net broadcasting process mistake occurs for mesh, to trigger monitoring error handler；If identical, the monitoring
The PES content of the digital television program of cable tv broadcast net broadcast is consistent with reference to monitoring station where website.
In the present invention, made reference in the TS that reference monitoring station chooses a digital television program, this TS stream can be from
Broadcast television transmissions net is received, can also be received from radio and television radio network, is also not excluded for from the previous of broadcast television transmissions net
A link receives.After the TS stream for receiving digital television program with reference to monitoring station, the video in digital television program TS is calculated
The abstract of the load of PES and audio PES forms PES summary information, and PES summary information is sent to monitoring station (can also
To be forwarded by unified message center, as referred to monitoring station 522 in Fig. 5 after forming PES summary information, first sends and be given to
Message center 512-1, message center 512-1 forward or are pushed to multiple relevant monitoring stations PES summary information again
523-1 ~ 523-n).
Meanwhile the TS of monitored digital television program is received at monitoring station (523-1 ~ 523-n), after reception, calculate number
The abstract of the content of the video PES and audio PES of word TV programme forms PES summary information.Monitoring station (523-1 ~ 523-
N) the PES summary information of reference monitoring station is matched with the PES summary information that monitoring station itself generates by PTS
(if program ID, PES type and PTS are equal, successful match)；After successful match, compares two matched PES abstracts and disappear
The abstract of PES load in breath, if identical, monitoring station is identical with reference to monitoring station program, and otherwise programme content is sent out
Changing triggers monitoring content issue handling business.
Illustrate for being monitored in this embodiment to a program, the method for the present invention and system can be simultaneously to multiple programs
It is monitored.
For not carrying the PES of PTS field, the load of the PES can be attached to the last one PES with PTS and born
The abstract of message is unifiedly calculated after load.
The algorithm for calculating PES load abstract is one-way hash function, which carries out the data of the random length of input
Transformation, calculates the numerical value of regular length, the abstract as input data.Workable hashing algorithm of the invention includes but not
Be limited to following algorithm: MD2, MD4, MD5, SHA1, SHA256, SHA384, SHA512, Snefru, N-Hash, RIPE-MD,
HAVAL etc..
The present invention is corresponded to by PTS field in PES to monitoring station and with reference to the PES packet of monitoring point, in PES packet
Head encapsulation in have optional PTS field, PTS field does not change in transmission network transmission process, radio network treatment process
Become, therefore can be corresponded to by the PTS field in PES.Not all PES includes PTS field, for not taking
PES packet with PTS is in processing, a part that the load of the PES is loaded as upper one PES with PTS, until encountering
The new PES packet with PTS field (largest interval according to standard requirements PTS is 700 milliseconds).
In order to save bandwidth, the input that the abstract of PES content is connected together as hash function can be calculated one again
Secondary abstract finally exports the abstract of abstract, and the abstract of this abstract is transmitted between reference monitoring station and monitoring station.
It is proposed by the present invention as a result, to be compared based on the abstract loaded to monitored program PES in each monitoring station
Monitoring example, programme content can be monitored with accurate measurements by modification situation.This method and system dramatically save progress
Strange land content monitoring bandwidth saves human input, improves monitoring capability, saves monitoring construction cost and operating cost.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is by appended claims and its equivalent limits.
Claims (7)
1. a kind of digital television monitoring method, includes the following steps:
Step 1: select a broadcast television transmissions net/radio network for reference to monitored network, deployment refers to monitoring station, other
Transmission network/the radio network that can transmit/broadcast the same digital television program is monitored network, disposes monitoring station；
Step 2: in reference monitoring station, receiving the TS comprising monitored digital television program n as reference source, calculate the program
The abstract of the video PES load of n and the abstract of audio PES load；The abstract for calculating PES load using hashing algorithm includes but not
It is limited to MD2, MD4, MD5, SHA1, SHA256, SHA384, SHA512, Snefru, N-Hash, RIPE-MD, HAVAL；Meanwhile
Each monitoring station receives the TS comprising monitored digital television program n, is calculated with hash identical with reference monitoring station
Method calculates the abstract of the video PES load of program n and the abstract of audio PES load；
Step 3: a PES summary information is defined, at least there are three elements for PES summary information: an abstract loaded for PES, two
For PTS entrained by PES, PES load is successively attached to the last one when the head PES does not carry PTS and carries PTS's
Abstract is calculated after PES load, three be the label of PES, there need to be the information of program ID and PES；
Step 4: in reference monitoring station and each monitoring station, the PES load abstract that step 2 is calculated is according to step 3 side
Method is respectively formed audio PES summary information and video PES summary information；
Step 5: the PES summary information of program n being sent to all monitoring stations with reference to monitoring station, with reference to monitoring station
PES summary information is transferred directly to all related monitoring stations from reference monitoring station, or first sends a unified message
Then center is forwarded to each related monitoring station by message center；
Step 6: after monitoring station receives the PES summary information with reference to monitoring station, being searched in local PES summary information
PES summary information in the same program ID with identical PES type, identical pts value；
Step 7: whether the abstract that PES is loaded in the PES summary information being matched in comparison step 6 sends with reference monitoring station
PES summary information in PES load abstract it is identical, if it is not the same, then mistake occurs for program transmission/broadcasting process, thus
Triggering monitoring error handler；If identical, network transmission/broadcast digital television program where the monitoring station
PES content is consistent with reference to monitoring station.
2. digital television monitoring method as described in claim 1, which is characterized in that monitored digital television program is encapsulated in TS
In；The digital TV video frequency stream of coding is encapsulated in video PES, and the video of DTV is made of continuous PES packet；Coding
Digital television audio stream is encapsulated in audio PES, and the audio of DTV is made of continuous PES packet；Video PES and audio
PES is encapsulated into respectively in the TS packet of different packet ID, becomes the video-frequency basic flow and audio stream in TS.
3. digital television monitoring method as described in claim 1, which is characterized in that each digital television program tool in TS
There are a Program Clock Reference PCR, resolution ratio 27MHz；Program coded audio stream and encoded video stream are individually enclosed in respectively
From in PES, the packet header PES can carry PTS, and PTS resolution ratio is 27MHz/300=90KHz, PTS be based on PCR when
Clock is the counting that 90KHz is carried out to PCR clock, play time of the PTS that audio PES is carried to indicate audio, video PES
Play time of the PTS carried in the packet header of packet to indicate video；There is largest interval and does not answer in PTS in audio PES packet sequence
More than 700 milliseconds, there is largest interval and is not to be exceeded 700 milliseconds in PTS in video PES packet sequence.
4. digital television monitoring method as described in claim 1, which is characterized in that digital television program passes through transmission/broadcast
Demultiplexing/multiplexing of network, encryption/decryption, modulating/demodulating link processing post package digital television program TS packet PID,
There is no variations for the PES packet content that PCR field, scrambling tag field change, but be packaged in TS packet.
5. digital television monitoring method as described in claim 1, which is characterized in that digital television program passes through transmission/broadcast
After the transmission and broadcast of network, the TS packet of digital television program is encapsulated there is no changing, while the PES packet being encapsulated in TS packet
Also there is no variations for content.
6. a kind of digital television monitoring system is, characterized by comprising: with reference to monitoring station, monitoring station and message center, institute
It states and monitors the same number of transmission/broadcast in different broadcast television transmissions networks respectively with reference to monitoring station and the monitoring station
Word TV programme；It is described to be used to receive the TS comprising monitored digital television program in monitored network with reference to monitoring station, and
And it calculates and generates digital television program PES summary information；The monitoring station is for receiving in monitored network comprising being supervised
The TS for surveying digital television program, generates the PES summary information of the digital television program, and with pair that is issued from reference monitoring station
The abstract of PES load in the PES summary information answered is compared, if identical, is monitored transmission/broadcast number in network
Word content of TV program is compared to reference to the received digital television program content of monitoring station, no change has taken place, otherwise compared to reference
The received digital television program content of monitoring station changes in transmission/broadcasting process.
7. digital television monitoring system as claimed in claim 6, which is characterized in that with reference to the PES summary information of monitoring station
It is first sent to the message center, the PES summary information of reference monitoring station is sent to all monitoring stations again by message center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510560336.8A CN105228004B (en) | 2015-09-07 | 2015-09-07 | A kind of digital TV contents monitoring method and its digital TV contents monitor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510560336.8A CN105228004B (en) | 2015-09-07 | 2015-09-07 | A kind of digital TV contents monitoring method and its digital TV contents monitor system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105228004A CN105228004A (en) | 2016-01-06 |
| CN105228004B true CN105228004B (en) | 2019-04-19 |
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| CN106658071B (en) * | 2016-11-28 | 2020-10-27 | 北京蓝拓扑科技股份有限公司 | Method and device for determining code stream transmission state |
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| CN1719909A (en) * | 2005-07-15 | 2006-01-11 | 复旦大学 | Method for measuring audio-video frequency content change |
| CN103780924A (en) * | 2012-10-26 | 2014-05-07 | 合肥康东福双信息科技有限公司 | Adaptive intelligent television synchronous broadcasting monitoring system on dynamic delay condition |
| CN103813182A (en) * | 2014-01-28 | 2014-05-21 | 苏州工业园区科升通讯有限公司 | System and method for QOS (quality of service) monitoring of IPTV (internet protocol television) services |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1719909A (en) * | 2005-07-15 | 2006-01-11 | 复旦大学 | Method for measuring audio-video frequency content change |
| CN103780924A (en) * | 2012-10-26 | 2014-05-07 | 合肥康东福双信息科技有限公司 | Adaptive intelligent television synchronous broadcasting monitoring system on dynamic delay condition |
| CN103813182A (en) * | 2014-01-28 | 2014-05-21 | 苏州工业园区科升通讯有限公司 | System and method for QOS (quality of service) monitoring of IPTV (internet protocol television) services |
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