CN107018428A - A kind of digital television system, headend equipment and set top box - Google Patents
A kind of digital television system, headend equipment and set top box Download PDFInfo
- Publication number
- CN107018428A CN107018428A CN201710233513.0A CN201710233513A CN107018428A CN 107018428 A CN107018428 A CN 107018428A CN 201710233513 A CN201710233513 A CN 201710233513A CN 107018428 A CN107018428 A CN 107018428A
- Authority
- CN
- China
- Prior art keywords
- bit stream
- stream datas
- dvb
- datas
- time stamp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 241001269238 Data Species 0.000 claims abstract description 316
- 230000032258 transport Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 abstract description 17
- 230000004044 response Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 8
- 230000001419 dependent effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
Classifications
-
- 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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
- H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
-
- 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
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/23418—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics
-
- 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
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
-
- 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
- H04N21/4383—Accessing a communication channel
- H04N21/4384—Accessing a communication channel involving operations to reduce the access time, e.g. fast-tuning for reducing channel switching latency
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
This application discloses a kind of digital television system, headend equipment and set top box, wherein, the headend equipment of the digital television system issues IP bit stream datas and DVB bit stream datas by network channel and cable line passage respectively by multicast bit stream data, bit stream data is sent after being demultiplexed respectively by the demultiplexer of the set top box to the decoder of the set top box, the decoder is decoded for the bit stream data first received, is obtained played data and is transferred to the terminal plays；In the case of network channel is normal, the transmission speed of the network channel will typically be faster than the transmission speed of the cable line passage, so as to reduce the time that platform instruction is cut in the set top box response, the purpose cut platform speed, lift Consumer's Experience for accelerating digital television system is realized.
Description
Technical field
The application is related to digital TV Broadcasting Techniques field, is set more specifically to a kind of digital television system, front end
Standby and set top box.
Background technology
DTV is also known as DVB-T or digital television, refers to from studio to all rings launched, transmit, received
Section is all that the signal propagation all using digital television signal or to the system is entered by be made up of 0,1 numeric string two
Digital stream processed is relative with simulated television come the television genre propagated.Its loss of signal is small, and reception is good.
Digital television system is generally made up of headend equipment, set top box and terminal, and bit stream data is passed through electricity by headend equipment
Cable channel is transmitted to set top box, and bit stream data passes through terminal plays after the demultiplexing of set top box and decoding.User is needing
When cut platform (switching digital TV channel), the set top box response obtains target after cutting platform instruction by cable line passage
The bit stream data of channel, then by terminal plays after demultiplexing and decoding, this process usually requires to consume necessarily
Time, cutting in platform process duration, terminal display is only blank screen or frozen frame, this gives the user of digital television system
Bring poor Consumer's Experience, user is often desirable to digital television system and completes to cut the speed of platform operation The faster the better.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of digital television system, headend equipment and set top box, with reality
Now accelerate the purpose cut platform speed, lift Consumer's Experience of digital television system.
To realize above-mentioned technical purpose, the embodiments of the invention provide following technical scheme：
A kind of digital television system, including：Headend equipment, set top box and terminal, the set top box include a decoder
With two demultiplexers, wherein；
The headend equipment is used to, according to platform instruction multicast bit stream data is cut, generate IP bit stream datas and DVB
DVB bit stream datas, the IP bit stream datas are by network tunnel transports, and the DVB bit stream datas pass through cable channel transfer；
Two demultiplexers are used to receive the IP bit stream datas and DVB bit stream datas respectively, and to receiving
Bit stream data is demultiplexed, and to the decoder transfers；
The decoder is used to decode the bit stream data first received, obtains played data and is handed down to the end
End, and for first being reached in the IP bit stream datas in the case of, obtain the Presentation Time Stamp and DVB codes of the IP bit stream datas
The Presentation Time Stamp of flow data, and Presentation Time Stamp and the Presentation Time Stamp of DVB bit stream datas according to the IP bit stream datas
Judge whether the IP bit stream datas and DVB bit stream datas meet switching condition, if it is, entering to the DVB bit stream datas
Row decoding, obtains played data and is handed down to the terminal.
Optionally, the IP bit stream datas are SD clear stream data.
Optionally, during the display of the Presentation Time Stamp of the decoder acquisition IP bit stream datas and DVB bit stream datas
Between stab specifically for being grouped to the IP bit stream datas and DVB bit stream datas of acquisition, obtaining IP packet code streams and DVB
Code stream is grouped, the header packet information for being grouped code stream according to the IP header packet informations and DVB for being grouped code stream, which is calculated, obtains the IP codes
The Presentation Time Stamp of flow data and the Presentation Time Stamp of DVB bit stream datas.
Optionally, when the decoder is according to the display of the Presentation Time Stamps of the IP bit stream datas and DVB bit stream datas
Between stamp judge whether the IP bit stream datas and DVB bit stream datas meet switching condition specifically for by the DVB bit stream datas
First Presentation Time Stamp stabbed as comparison time, judge whether comparison time stamp is more than or equal to current IP bit stream datas
Presentation Time Stamp, if it is, judge that the IP bit stream datas and DVB bit stream datas meet switching condition, if it is not, then will
Next Presentation Time Stamp that comparison time is stabbed in the DVB bit stream datas is stabbed as new comparison time, and is returned and judged institute
The step of whether comparison time stamp is more than or equal to the Presentation Time Stamp of current IP bit stream datas stated；
In the Presentation Time Stamp that the Presentation Time Stamp of the current IP bit stream datas is not consumed for the IP bit stream datas
First Presentation Time Stamp.
Optionally, when the decoder is according to the display of the Presentation Time Stamps of the IP bit stream datas and DVB bit stream datas
Between stamp judge whether the IP bit stream datas and DVB bit stream datas meet switching condition specifically for by the DVB bit stream datas
First Presentation Time Stamp stabbed as comparison time, judge whether comparison time stamp is more than or equal to current IP bit stream datas
Presentation Time Stamp and time-out time and, if it is, judging that the IP bit stream datas and DVB bit stream datas meet switching bar
Part；
If it is not, then judge whether the comparison time stamp is more than or equal to the Presentation Time Stamp of current IP bit stream datas,
If so, then judging that the IP bit stream datas and DVB bit stream datas meet switching condition, if it is not, then by the DVB bit stream datas
Next Presentation Time Stamp of comparison time stamp is stabbed as new comparison time, and is returned and judged whether the comparison time is stabbed big
In or equal to current IP bit stream datas Presentation Time Stamp the step of.
Optionally, the time-out time is 5s, 10s or 15s.
Optionally, when the IP bit stream datas and DVB bit stream datas meet switching condition, the decoder is to described
DVB bit stream datas are decoded, and are obtained played data and are handed down to the terminal specifically for being compared to the DVB code streams
Bit stream data after timestamp is decoded, and is obtained played data and is handed down to the terminal.
A kind of headend equipment, applied to the digital television system described in any of the above-described, the headend equipment is used for basis
Platform instruction multicast bit stream data, generation IP bit stream datas and DVB DVB bit stream datas are cut, the IP bit stream datas lead to
Network tunnel transports are crossed, the DVB bit stream datas pass through cable channel transfer.
Optionally, the IP bit stream datas are SD clear stream data.
A kind of set top box, applied to the digital television system described in any of the above-described, the set top box includes a decoding
Device and two demultiplexers, wherein,
Two demultiplexers are used to receive IP bit stream datas and DVB bit stream datas respectively, and the code stream to receiving
Data are demultiplexed, and to the decoder transfers；
The decoder is used to decode the bit stream data first received, obtains played data and is handed down to terminal,
In the case of for first being reached in the IP bit stream datas, the Presentation Time Stamp and DVB code streams of the IP bit stream datas are obtained
The Presentation Time Stamp of data, and Presentation Time Stamp and the Presentation Time Stamp of DVB bit stream datas according to the IP bit stream datas sentence
Whether disconnected the IP bit stream datas and DVB bit stream datas meet switching condition, if it is, being carried out to the DVB bit stream datas
Decoding, obtains played data and is handed down to the terminal.
It can be seen from the above technical proposal that the embodiments of the invention provide a kind of digital television system, headend equipment and
Set top box, wherein, the headend equipment of the digital television system passes through network channel and cable respectively by multicast bit stream data
Line passage issues IP bit stream datas and DVB bit stream datas, and bit stream data is demultiplexed respectively by the demultiplexer of the set top box
Sent afterwards to the decoder of the set top box, the decoder is decoded for the bit stream data first received, played
Data simultaneously transfer to the terminal plays；In the case of network channel is normal, the transmission speed of the network channel is typically fast
In the transmission speed of the cable line passage, so as to reduce the time that platform instruction is cut in the set top box response, quickening is realized
The purpose cut platform speed, lift Consumer's Experience of digital television system.
In addition, the digital television system is in the case where the IP bit stream datas are first reached, when the IP bit stream datas
When meeting switching condition with DVB bit stream datas, broadcast code flow is switched to the DVB bit stream datas, to avoid taking net for a long time
Network passage, causes the situation of network channel congestion to occur.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
A kind of structural representation for digital television system that Fig. 1 provides for one embodiment of the application；
A kind of structural representation for headend equipment that Fig. 2 provides for one embodiment of the application；
The decoder that Fig. 3 is provided for one embodiment of the application according to the Presentation Time Stamps of the IP bit stream datas and
The Presentation Time Stamp of DVB bit stream datas judges whether the IP bit stream datas and DVB bit stream datas meet the flow of switching condition
Schematic diagram；
The decoder that Fig. 4 is provided for another embodiment of the application according to the Presentation Time Stamps of the IP bit stream datas and
The Presentation Time Stamp of DVB bit stream datas judges whether the IP bit stream datas and DVB bit stream datas meet the flow of switching condition
Schematic diagram；
A kind of structural representation for set top box that Fig. 5 provides for one embodiment of the application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The embodiment of the present application provides a kind of digital television system, as shown in figure 1, including：Headend equipment 100, set top box
200 and terminal 300, the set top box 200 includes a decoder and two demultiplexers, wherein；
The headend equipment 100 is used to, according to platform instruction multicast bit stream data is cut, generate IP bit stream datas and digital video
DVB bit stream datas are broadcasted, the IP bit stream datas are by network tunnel transports, and the DVB bit stream datas pass through cable line passage
Transmission；
Two demultiplexers are used to receive the IP bit stream datas and DVB bit stream datas respectively, and to receiving
Bit stream data is demultiplexed, and to the decoder transfers；
The decoder is used to decode the bit stream data first received, obtains played data and is handed down to the end
End 300, and for first being reached in the IP bit stream datas in the case of, obtain the IP bit stream datas Presentation Time Stamp and
The Presentation Time Stamp of DVB bit stream datas, and during the display of Presentation Time Stamp according to the IP bit stream datas and DVB bit stream datas
Between stamp judge whether the IP bit stream datas and DVB bit stream datas meet switching condition, if it is, to the DVB code streams number
According to being decoded, obtain played data and be handed down to the terminal 300.
It should be noted that it is described cut platform instruction refer to user by remote control send carry target number TV frequency
The instruction of road mark, it is described to cut platform instruction after the remote control sends the forwarding with the set top box 200 by headend equipment
100 equipment are received, and the headend equipment 100 cuts the bit stream data that platform instruction obtains target according to described.It is described to cut what platform was instructed
Sending method and headend equipment 100 have been those skilled in the art institute according to the process for the bit stream data for cutting platform instruction acquisition target
Know, the application will not be described here.
In this application, the structure of the headend equipment 100 is as shown in Fig. 2 including satellite signal receiving equipment, IP code streams
Transcoding device 110 and DVB code streams modulating equipment 120；Wherein, the satellite signal receiving equipment is used to receive defending for DTV
Star signal is simultaneously converted to bit stream data, and bit stream data passes through the place of the DVB code streams modulating equipment 120 of IP code streams transcoding device 110
The reason generation IP bit stream datas and DVB bit stream datas；110 pairs of the IP code streams transcoding device bit stream data is by multiplexing
With generate the IP bit stream datas after transcoding, described 120 pairs of bit stream datas of DVB code streams modulating equipment are multiplexed, are scrambled,
The DVB bit stream datas are generated after modulation and frequency transformation.
The headend equipment 100 of the digital television system passes through network channel and cable respectively by multicast bit stream data
Passage issues IP bit stream datas and DVB bit stream datas, and bit stream data is demultiplexed respectively by the demultiplexer of the set top box 200
Sent afterwards to the decoder of the set top box 200, the decoder is decoded for the bit stream data first received, broadcast
Put data and transfer to the terminal 300 to play；In the case of network channel is normal, the transmission speed of the network channel is general
It is faster than the transmission speed of the cable line passage, so that reducing the set top box 200 responds the time for cutting platform instruction, realizes
Accelerate the purpose cut platform speed, lift Consumer's Experience of digital television system.
In addition, the digital television system is in the case where the IP bit stream datas are first reached, when the IP bit stream datas
When meeting switching condition with DVB bit stream datas, broadcast code flow is switched to the DVB code streams, led to avoiding taking network for a long time
Road, causes the situation of network channel congestion to occur.
In actual application process, the decoder is after the bit stream data to first receiving is decoded, in addition it is also necessary to
By showing that (DISPLAY) equipment carries out the hybrid coding of audio, video data and graph data, the played data, institute are finally obtained
State played data defeated by HDMI (High Definition Multimedia Interface, HDMI)
Go out to the terminal 300.
It should also be noted that, the digital television system need not carry out changing on hardware to existing set top box 200
Enter, it is adaptable to possess set top box more than a decoder, the scope of application is wider.
On the basis of above-described embodiment, in the preferred embodiment of the application, the IP bit stream datas are SD
Clear stream data；
It should be noted that SD refers to a kind of video format that physical resolution is 720P × 576P.
Clear stream data refer to the video data of unencryption.
In the present embodiment, when the IP bit stream datas are SD clear stream data, the solution can further be reduced
Code device for IP bit stream datas the decoding time, and due to the IP bit stream datas be clear stream data, it is not required that to data
It is decrypted, reduces the time of decrypting process occupancy.
By taking a width of 4MB/S of the band of network channel as an example, the data of its transmission per second are 4-5M, and video per second includes 24
Two field picture, then be about 50ms per the transmission time of two field picture, and typically receiving 4-5 two field pictures can display picture, then IP codes
The transmission of flow data is time-consuming to be generally less than 200ms, and the decoding time of 4-5 frame SD clear stream images is generally less than 300ms, then exists
In the case of network channel is normal, typically the time for being sent to display picture is instructed to be generally less than 500ms from the platform of cutting.
On the basis of above-described embodiment, in another embodiment of the application, the decoder obtains the IP codes
The Presentation Time Stamp of flow data and the Presentation Time Stamp of DVB bit stream datas specifically for, IP bit stream datas to acquisition and
DVB bit stream datas are grouped, and obtain IP packet code streams and DVB packet code streams, the header packet information of code stream is grouped according to the IP
The display of the Presentation Time Stamp and DVB bit stream datas that obtain the IP bit stream datas is calculated with the DVB header packet informations for being grouped code stream
Timestamp.
When Presentation Time Stamp (Presentation Time Stame, PTS) is used for the display of mark data frame after the decoding
Between.In general, the Presentation Time Stamp is provided with key frame (I frames), P frames and the B frames of bit stream data, but at this
In application, the Presentation Time Stamp for the IP bit stream datas that the decoder is obtained refers to the time of the I frames in bit stream data
Stamp, that is to say, that in this application, with bit stream data when the decoder progress IP bit stream datas and the switching of DVB bit stream datas
I frames timestamp be foundation.Because I frames can be complete the auxiliary image data of expression one, it is not necessary to dependent on other frames.
Therefore, take the Presentation Time Stamp of I frames as the basis for estimation in switch data source, could immediately decode and show video image.
On the basis of above-described embodiment, in another embodiment of the application, the decoder is according to the IP codes
The Presentation Time Stamp of flow data and the Presentation Time Stamp of DVB bit stream datas judge that the IP bit stream datas and DVB bit stream datas are
The no switching condition that meets using the first Presentation Time Stamp of the DVB bit stream datas as comparison time specifically for stabbing, judging institute
The Presentation Time Stamp whether comparison time stamp is more than or equal to current IP bit stream datas is stated, if it is, judging the IP code streams
Data and DVB bit stream datas meet switching condition, if it is not, then by the DVB bit stream datas comparison time stab it is next
Whether Presentation Time Stamp is stabbed as new comparison time, and return and judge the comparison time stamp more than or equal to current IP code streams
The step of Presentation Time Stamp of data；
In the Presentation Time Stamp that the Presentation Time Stamp of the current IP bit stream datas is not consumed for the IP bit stream datas
First Presentation Time Stamp.
With reference to Fig. 3, Fig. 3 is Presentation Time Stamp and DVB bit stream data of the decoder according to the IP bit stream datas
Presentation Time Stamp judges whether the IP bit stream datas and DVB bit stream datas meet the schematic flow sheet of switching condition.
In the present embodiment, in the case that the IP bit stream datas are first received by the set top box 200 and start decoding,
When the DVB bit stream datas are reached, the Presentation Time Stamp conduct carried first to the first key frame of the DVB bit stream datas
The Presentation Time Stamp that comparison time stamp is not consumed with the IP bit stream datas is compared, if comparison time stamp and
The Presentation Time Stamp of current IP bit stream datas is identical, or comparison time stamp is more than the display time of the current bit stream data
Stamp, then show the DVB bit stream datas receive the decode that progress caught up with the IP bit stream datas receive the decode progress,
Data source can be switched to the DVB bit stream datas.When the comparison time stabs aobvious less than the current IP bit stream datas
When showing timestamp, then need to regard the Presentation Time Stamp in the DVB bit stream datas being located at after comparison time is stabbed as new ratio
It is compared to timestamp, then with the Presentation Time Stamp of current IP bit stream datas, until comparison time stamp is more than or equal to
The Presentation Time Stamp of current IP bit stream datas.
On the basis of above-described embodiment, in another preferred embodiment of the application, the decoder is according to described
The Presentation Time Stamp of IP bit stream datas and the Presentation Time Stamp of DVB bit stream datas judge the IP bit stream datas and DVB code stream numbers
According to whether meeting switching condition specifically for stabbing, sentencing as comparison time using the first Presentation Time Stamp of the DVB bit stream datas
The disconnected comparison time stamp whether be more than or equal to current IP bit stream datas Presentation Time Stamp and time-out time and, if
It is then to judge that the IP bit stream datas and DVB bit stream datas meet switching condition；
If it is not, then judge whether the comparison time stamp is more than or equal to the Presentation Time Stamp of current IP bit stream datas,
If so, then judging that the IP bit stream datas and DVB bit stream datas meet switching condition, if it is not, then by the DVB bit stream datas
Next Presentation Time Stamp of comparison time stamp is stabbed as new comparison time, and is returned and judged whether the comparison time is stabbed big
In or equal to current IP bit stream datas Presentation Time Stamp the step of.
With reference to Fig. 4, during Fig. 4 is the present embodiment, the decoder is according to the Presentation Time Stamp and DVB of the IP bit stream datas
The Presentation Time Stamp of bit stream data judges whether the IP bit stream datas and DVB bit stream datas meet the flow signal of switching condition
Figure.
In the present embodiment, the concept of time-out time is introduced, it is to avoid DVB bit stream datas occur and mistake or cable occur
Mistake, which occurs, in line passage causes the lasting situation appearance for taking the network channel, causing network channel to block.
Specifically, in the case where the IP bit stream datas are first received by the set top box 200, the decoder first will
The first Presentation Time Stamp of the DVB bit stream datas is stabbed as comparison time, judges whether the comparison time stamp is more than or waits
In current bit stream data Presentation Time Stamp and time-out time and, if it is, data source directly is switched into the DVB codes
Flow data；If it is not, then by data when waiting the decoding progress of DVB bit stream datas to catch up with the decoding precision of the IP bit stream datas
Source switches to the DVB bit stream datas.
It should be noted that in this application, if the network channel goes wrong, causing the DVB bit stream datas
First received by the set top box 200, then the decoder is directly decoded to the DVB bit stream datas.
In the specific embodiment of the application, the time-out time is 5s, 10s or 15s, and general selection 5s's is just whole
Several times are as the time-out time, but it is preferable that the value of the time-out time is 10s, because too short time-out time
Switching time may be less than, and too long of time-out time can then aggravate the load of the headend equipment 100.The application is to described
The specific value of time-out time is not limited, specifically depending on actual conditions.
On the basis of above-described embodiment, in another embodiment of the application, in the IP bit stream datas and DVB codes
When flow data meets switching condition, the decoder is decoded to the DVB bit stream datas, is obtained played data and is handed down to
The terminal 300 to bit stream data of the DVB code streams after comparison time stamp specifically for decoding, being played
Data distributing gives the terminal 300.
One kind is present embodiments provided when the IP bit stream datas and DVB bit stream datas meet switching condition, it is feasible
Data source is taken over seamlessly as the mode of DVB bit stream datas.
In the preferred embodiment of the application, for optimal speed, the IP bit stream datas use unified coding
Form and identical pid value, save the time interacted with headend equipment 100, and the unidirectional data that receive improve efficiency, general ip code stream
Data and DVB bit stream datas use identical coded format, otherwise need to restart decoder.And for audio frequency and video PID difference,
Directly in software view modification, the time for changing decoder is saved.
Accordingly, the embodiment of the present application additionally provides a kind of headend equipment 100, applied to described in any of the above-described embodiment
Digital television system, the headend equipment 100 is used to, according to platform instruction multicast bit stream data is cut, generate IP bit stream datas and numeral
Video broadcasting DVB bit stream datas, the IP bit stream datas are by network tunnel transports, and the DVB bit stream datas pass through cable
Channel transfer.
It should be noted that it is described cut platform instruction refer to user by remote control send carry target number TV frequency
The instruction of road mark, it is described to cut platform instruction after the remote control sends the forwarding with the set top box 200 by headend equipment
100 equipment are received, and the headend equipment 100 cuts the bit stream data that platform instruction obtains target according to described.It is described to cut what platform was instructed
Sending method and headend equipment 100 have been those skilled in the art institute according to the process for the bit stream data for cutting platform instruction acquisition target
Know, the application will not be described here.
In this application, the structure of the headend equipment 100 is as shown in Fig. 2 including satellite signal receiving equipment, IP code streams
Transcoding device 110 and DVB code streams modulating equipment 120；Wherein, the satellite signal receiving equipment is used to receive defending for DTV
Star signal is simultaneously converted to bit stream data, and bit stream data passes through the place of the DVB code streams modulating equipment 120 of IP code streams transcoding device 110
The reason generation IP bit stream datas and DVB bit stream datas；110 pairs of the IP code streams transcoding device bit stream data is by multiplexing
With generate the IP bit stream datas after transcoding, described 120 pairs of bit stream datas of DVB code streams modulating equipment are multiplexed, are scrambled,
The DVB bit stream datas are generated after modulation and frequency transformation.
On the basis of above-described embodiment, in the preferred embodiment of the application, the IP bit stream datas are SD
Clear stream data；
It should be noted that SD refers to a kind of video format that physical resolution is 720P × 576P.
Clear stream data refer to the video data of unencryption.
In the present embodiment, when the IP bit stream datas are SD clear stream data, the solution can further be reduced
Code device for IP bit stream datas the decoding time, and due to the IP bit stream datas be clear stream data, it is not required that to data
It is decrypted, reduces the time of decrypting process occupancy.
By taking a width of 4MB/S of the band of network channel as an example, the data of its transmission per second are 4-5M, and video per second includes 24
Two field picture, then be about 50ms per the transmission time of two field picture, and typically receiving 4-5 two field pictures can display picture, then IP codes
The transmission of flow data is time-consuming to be generally less than 200ms, and the decoding time of 4-5 frame SD clear stream images is generally less than 300ms, then exists
In the case of network channel is normal, typically the time for being sent to display picture is instructed to be generally less than 500ms from the platform of cutting.
Accordingly, the embodiment of the present application additionally provides a kind of set top box 200, as shown in figure 5, implementing applied to any of the above-described
Digital television system described in example, the set top box 200 includes a decoder and two demultiplexers, wherein,
Two demultiplexers are used to receive IP bit stream datas and DVB bit stream datas respectively, and the code stream to receiving
Data are demultiplexed, and to the decoder transfers；
The decoder is used to decode the bit stream data first received, obtains played data and is handed down to terminal
300, and for first being reached in the IP bit stream datas in the case of, obtain the Presentation Time Stamp and DVB of the IP bit stream datas
The Presentation Time Stamp of bit stream data, and the Presentation Time Stamp according to the IP bit stream datas and the display time of DVB bit stream datas
Stamp judges whether the IP bit stream datas and DVB bit stream datas meet switching condition, if it is, to the DVB bit stream datas
Decoded, obtain played data and be handed down to the terminal 300.
The set top box 200 is decoded for the bit stream data first received, is obtained played data and is transferred to the end
Play at end 300；In the case of network channel is normal, the transmission speed of the network channel will typically be faster than the cable and lead to
The transmission speed in road, so that reducing the set top box 200 responds the time for cutting platform instruction, realizes quickening digital television system
The purpose cut platform speed, lift Consumer's Experience.
In addition, the set top box 200 is in the case where the IP bit stream datas are first reached, when the IP bit stream datas and
When DVB bit stream datas meet switching condition, broadcast code flow is switched to the DVB code streams, to avoid taking network channel for a long time,
The situation of network channel congestion is caused to occur.
In actual application process, the decoder is after the bit stream data to first receiving is decoded, in addition it is also necessary to
By showing that (DISPLAY) equipment carries out the hybrid coding of audio, video data and graph data, the played data, institute are finally obtained
State played data defeated by HDMI (High Definition Multimedia Interface, HDMI)
Go out to the terminal 300.
The set top box 200 need not be improved on hardware to set top box 200 in the prior art, it is adaptable to possess one
Set top box more than individual decoder, the scope of application is wider.
On the basis of above-described embodiment, in another embodiment of the application, the decoder obtains the IP codes
The Presentation Time Stamp of flow data and the Presentation Time Stamp of DVB bit stream datas specifically for, IP bit stream datas to acquisition and
DVB bit stream datas are grouped, and obtain IP packet code streams and DVB packet code streams, the header packet information of code stream is grouped according to the IP
The display of the Presentation Time Stamp and DVB bit stream datas that obtain the IP bit stream datas is calculated with the DVB header packet informations for being grouped code stream
Timestamp.
When Presentation Time Stamp (Presentation Time Stame, PTS) is used for the display of mark data frame after the decoding
Between.In general, the Presentation Time Stamp is provided with key frame (I frames), P frames and the B frames of bit stream data, but at this
In application, the Presentation Time Stamp for the IP bit stream datas that the decoder is obtained refers to the time of the I frames in bit stream data
Stamp, that is to say, that in this application, with bit stream data when the decoder progress IP bit stream datas and the switching of DVB bit stream datas
I frames timestamp be foundation.Because I frames can be complete the auxiliary image data of expression one, it is not necessary to dependent on other frames.
Therefore, take the Presentation Time Stamp of I frames as the basis for estimation in switch data source, could immediately decode and show video image.
On the basis of above-described embodiment, in another embodiment of the application, the decoder is according to the IP codes
The Presentation Time Stamp of flow data and the Presentation Time Stamp of DVB bit stream datas judge that the IP bit stream datas and DVB bit stream datas are
The no switching condition that meets using the first Presentation Time Stamp of the DVB bit stream datas as comparison time specifically for stabbing, judging institute
The Presentation Time Stamp whether comparison time stamp is more than or equal to current IP bit stream datas is stated, if it is, judging the IP code streams
Data and DVB bit stream datas meet switching condition, if it is not, then by the DVB bit stream datas comparison time stab it is next
Whether Presentation Time Stamp is stabbed as new comparison time, and return and judge the comparison time stamp more than or equal to current IP code streams
The step of Presentation Time Stamp of data；
In the Presentation Time Stamp that the Presentation Time Stamp of the current IP bit stream datas is not consumed for the IP bit stream datas
First Presentation Time Stamp.
With reference to Fig. 3, Fig. 3 is Presentation Time Stamp and DVB bit stream data of the decoder according to the IP bit stream datas
Presentation Time Stamp judges whether the IP bit stream datas and DVB bit stream datas meet the schematic flow sheet of switching condition.
In the present embodiment, in the case that the IP bit stream datas are first received by the set top box 200 and start decoding,
When the DVB bit stream datas are reached, the Presentation Time Stamp conduct carried first to the first key frame of the DVB bit stream datas
The Presentation Time Stamp that comparison time stamp is not consumed with the IP bit stream datas is compared, if comparison time stamp and
The Presentation Time Stamp of current IP bit stream datas is identical, or comparison time stamp is more than the display time of the current bit stream data
Stamp, then show the DVB bit stream datas receive the decode that progress caught up with the IP bit stream datas receive the decode progress,
Data source can be switched to the DVB bit stream datas.When the comparison time stabs aobvious less than the current IP bit stream datas
When showing timestamp, then need to regard the Presentation Time Stamp in the DVB bit stream datas being located at after comparison time is stabbed as new ratio
It is compared to timestamp, then with the Presentation Time Stamp of current IP bit stream datas, until comparison time stamp is more than or equal to
The Presentation Time Stamp of current IP bit stream datas.
On the basis of above-described embodiment, in another preferred embodiment of the application, the decoder is according to described
The Presentation Time Stamp of IP bit stream datas and the Presentation Time Stamp of DVB bit stream datas judge the IP bit stream datas and DVB code stream numbers
According to whether meeting switching condition specifically for stabbing, sentencing as comparison time using the first Presentation Time Stamp of the DVB bit stream datas
The disconnected comparison time stamp whether be more than or equal to current IP bit stream datas Presentation Time Stamp and time-out time and, if
It is then to judge that the IP bit stream datas and DVB bit stream datas meet switching condition；
If it is not, then judge whether the comparison time stamp is more than or equal to the Presentation Time Stamp of current IP bit stream datas,
If so, then judging that the IP bit stream datas and DVB bit stream datas meet switching condition, if it is not, then by the DVB bit stream datas
Next Presentation Time Stamp of comparison time stamp is stabbed as new comparison time, and is returned and judged whether the comparison time is stabbed big
In or equal to current IP bit stream datas Presentation Time Stamp the step of.
With reference to Fig. 4, during Fig. 4 is the present embodiment, the decoder is according to the Presentation Time Stamp and DVB of the IP bit stream datas
The Presentation Time Stamp of bit stream data judges whether the IP bit stream datas and DVB bit stream datas meet the flow signal of switching condition
Figure.
In the present embodiment, the concept of time-out time is introduced, it is to avoid DVB bit stream datas occur and mistake or cable occur
Mistake, which occurs, in line passage causes the lasting situation appearance for taking the network channel, causing network channel to block.
Specifically, in the case where the IP bit stream datas are first received by the set top box 200, the decoder first will
The first Presentation Time Stamp of the DVB bit stream datas is stabbed as comparison time, judges whether the comparison time stamp is more than or waits
In current bit stream data Presentation Time Stamp and time-out time and, if it is, data source directly is switched into the DVB codes
Flow data；If it is not, then by data when waiting the decoding progress of DVB bit stream datas to catch up with the decoding precision of the IP bit stream datas
Source switches to the DVB bit stream datas.
It should be noted that in this application, if the network channel goes wrong, causing the DVB bit stream datas
First received by the set top box 200, then the decoder is directly decoded to the DVB bit stream datas.
In the specific embodiment of the application, the time-out time is 5s, 10s or 15s, and general selection 5s's is just whole
Several times are as the time-out time, but it is preferable that the value of the time-out time is 10s, because too short time-out time
Switching time may be less than, and too long of time-out time can then aggravate the load of the headend equipment 100.The application is to described
The specific value of time-out time is not limited, specifically depending on actual conditions.
On the basis of above-described embodiment, in another embodiment of the application, in the IP bit stream datas and DVB codes
When flow data meets switching condition, the decoder is decoded to the DVB bit stream datas, is obtained played data and is handed down to
The terminal 300 to bit stream data of the DVB code streams after comparison time stamp specifically for decoding, being played
Data distributing gives the terminal 300.
One kind is present embodiments provided when the IP bit stream datas and DVB bit stream datas meet switching condition, it is feasible
Data source is taken over seamlessly as the mode of DVB bit stream datas.
In summary, the embodiment of the present application provides a kind of digital television system, headend equipment 100 and set top box 200, its
In, the headend equipment 100 of the digital television system passes through network channel and cable line passage respectively by multicast bit stream data
IP bit stream datas and DVB bit stream datas are issued, bit stream data is demultiplexed backward respectively by the demultiplexer of the set top box 200
The decoder of the set top box 200 is sent, and the decoder is decoded for the bit stream data first received, is obtained and is played number
According to and transfer to the terminal 300 to play；In the case of network channel is normal, the transmission speed of the network channel is typically fast
In the transmission speed of the cable line passage, so that reducing the set top box 200 responds the time for cutting platform instruction, realize and add
The purpose cut platform speed, lift Consumer's Experience of fast digital television system.
In addition, the digital television system is in the case where the IP bit stream datas are first reached, when the IP bit stream datas
When meeting switching condition with DVB bit stream datas, broadcast code flow is switched to the DVB code streams, led to avoiding taking network for a long time
Road, causes the situation of network channel congestion to occur.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (10)
1. a kind of digital television system, it is characterised in that including：Headend equipment, set top box and terminal, the set top box include one
Individual decoder and two demultiplexers, wherein；
The headend equipment is used to, according to platform instruction multicast bit stream data is cut, generate IP bit stream datas and DVB DVB
Bit stream data, the IP bit stream datas are by network tunnel transports, and the DVB bit stream datas pass through cable channel transfer；
Two demultiplexers are used to receive the IP bit stream datas and DVB bit stream datas, and the code stream to receiving respectively
Data are demultiplexed, and to the decoder transfers；
The decoder is used to decode the bit stream data first received, obtains played data and is handed down to the terminal,
In the case of for first being reached in the IP bit stream datas, the Presentation Time Stamp and DVB code streams of the IP bit stream datas are obtained
The Presentation Time Stamp of data, and Presentation Time Stamp and the Presentation Time Stamp of DVB bit stream datas according to the IP bit stream datas sentence
Whether disconnected the IP bit stream datas and DVB bit stream datas meet switching condition, if it is, being carried out to the DVB bit stream datas
Decoding, obtains played data and is handed down to the terminal.
2. system according to claim 1, it is characterised in that the IP bit stream datas are SD clear stream data.
3. system according to claim 1, it is characterised in that when the decoder obtains the display of the IP bit stream datas
Between stamp and DVB bit stream datas Presentation Time Stamp specifically for being carried out to the IP bit stream datas and DVB bit stream datas of acquisition
Packet, obtains IP packet code streams and DVB packet code streams, and code stream is grouped according to the IP header packet informations and DVB for being grouped code stream
Header packet information calculates the Presentation Time Stamp of the Presentation Time Stamp and DVB bit stream datas that obtain the IP bit stream datas.
4. system according to claim 1, it is characterised in that when the decoder is according to the displays of the IP bit stream datas
Between stamp and the Presentation Time Stamps of DVB bit stream datas judge whether the IP bit stream datas and DVB bit stream datas meet switching condition
Specifically for the first Presentation Time Stamp of the DVB bit stream datas is stabbed as comparison time, judges that the comparison time stamp is
The no Presentation Time Stamp more than or equal to current IP bit stream datas, if it is, judging the IP bit stream datas and DVB code stream numbers
According to meeting switching condition, if it is not, then next Presentation Time Stamp that comparison time in the DVB bit stream datas is stabbed is as new
Comparison time stamp, and return judge comparison time stamp whether more than or equal to current IP bit stream datas Presentation Time Stamp
The step of；
It is first in the Presentation Time Stamp that the Presentation Time Stamp of the current IP bit stream datas is not consumed for the IP bit stream datas
Presentation Time Stamp.
5. system according to claim 4, it is characterised in that when the decoder is according to the displays of the IP bit stream datas
Between stamp and the Presentation Time Stamps of DVB bit stream datas judge whether the IP bit stream datas and DVB bit stream datas meet switching condition
Specifically for the first Presentation Time Stamp of the DVB bit stream datas is stabbed as comparison time, judges that the comparison time stamp is
No Presentation Time Stamp and time-out time more than or equal to current IP bit stream datas and, if it is, judging the IP code streams
Data and DVB bit stream datas meet switching condition；
If it is not, then judge whether the comparison time stamp is more than or equal to the Presentation Time Stamp of current IP bit stream datas, if so,
Then judge that the IP bit stream datas and DVB bit stream datas meet switching condition, if it is not, will then be compared in the DVB bit stream datas
Next Presentation Time Stamp of timestamp is stabbed as new comparison time, and return judge the comparison time stab whether be more than or
Equal to current IP bit stream datas Presentation Time Stamp the step of.
6. system according to claim 5, it is characterised in that the time-out time is 5s, 10s or 15s.
7. system according to claim 4, it is characterised in that meet and cut in the IP bit stream datas and DVB bit stream datas
When changing condition, the decoder is decoded to the DVB bit stream datas, obtains played data and to be handed down to the terminal specific
For being decoded to bit stream data of the DVB code streams after comparison time stamp, obtaining played data and be handed down to the end
End.
8. a kind of headend equipment, it is characterised in that described applied to the digital television system described in claim any one of 1-7
Headend equipment is used to, according to platform instruction multicast bit stream data is cut, generate IP bit stream datas and DVB DVB bit stream datas,
The IP bit stream datas are by network tunnel transports, and the DVB bit stream datas pass through cable channel transfer.
9. headend equipment according to claim 8, it is characterised in that the IP bit stream datas are SD clear stream data.
10. a kind of set top box, it is characterised in that applied to the digital television system described in claim any one of 1-7, the machine
Top box includes a decoder and two demultiplexers, wherein,
Two demultiplexers are used to receive IP bit stream datas and DVB bit stream datas respectively, and the bit stream data to receiving
Demultiplexed, and to the decoder transfers；
The decoder is used to decode the bit stream data first received, obtains played data and is handed down to terminal, and uses
In the case of first being reached in the IP bit stream datas, the Presentation Time Stamp and DVB bit stream datas of the IP bit stream datas are obtained
Presentation Time Stamp, and Presentation Time Stamp and the Presentation Time Stamp of DVB bit stream datas according to the IP bit stream datas judges institute
State IP bit stream datas and whether DVB bit stream datas meet switching condition, if it is, the DVB bit stream datas are decoded,
Obtain played data and be handed down to the terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710233513.0A CN107018428A (en) | 2017-04-11 | 2017-04-11 | A kind of digital television system, headend equipment and set top box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710233513.0A CN107018428A (en) | 2017-04-11 | 2017-04-11 | A kind of digital television system, headend equipment and set top box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107018428A true CN107018428A (en) | 2017-08-04 |
Family
ID=59445237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710233513.0A Pending CN107018428A (en) | 2017-04-11 | 2017-04-11 | A kind of digital television system, headend equipment and set top box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107018428A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108769797A (en) * | 2018-05-31 | 2018-11-06 | 深圳市茁壮网络股份有限公司 | A kind of method and system for accelerating live streaming to cut platform |
| CN111988648A (en) * | 2020-08-27 | 2020-11-24 | 青岛海信传媒网络技术有限公司 | Time display method and display device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101072337A (en) * | 2006-05-09 | 2007-11-14 | 阿尔卡特朗讯公司 | Method for fast zapping between TV channels |
| CN101282466A (en) * | 2008-05-13 | 2008-10-08 | 中兴通讯股份有限公司 | Method and system for reducing switching time of mobile phone television channel |
| CN101803251A (en) * | 2007-09-18 | 2010-08-11 | 高通股份有限公司 | Method and apparatus to enable fast channel switching with limited DVB receiver memory |
| CN106454394A (en) * | 2016-08-03 | 2017-02-22 | 华为技术有限公司 | Fast changing method of DVB channels, equipment and system |
-
2017
- 2017-04-11 CN CN201710233513.0A patent/CN107018428A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101072337A (en) * | 2006-05-09 | 2007-11-14 | 阿尔卡特朗讯公司 | Method for fast zapping between TV channels |
| CN101803251A (en) * | 2007-09-18 | 2010-08-11 | 高通股份有限公司 | Method and apparatus to enable fast channel switching with limited DVB receiver memory |
| CN101282466A (en) * | 2008-05-13 | 2008-10-08 | 中兴通讯股份有限公司 | Method and system for reducing switching time of mobile phone television channel |
| CN106454394A (en) * | 2016-08-03 | 2017-02-22 | 华为技术有限公司 | Fast changing method of DVB channels, equipment and system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108769797A (en) * | 2018-05-31 | 2018-11-06 | 深圳市茁壮网络股份有限公司 | A kind of method and system for accelerating live streaming to cut platform |
| CN111988648A (en) * | 2020-08-27 | 2020-11-24 | 青岛海信传媒网络技术有限公司 | Time display method and display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103733631B (en) | Media content transceiving method and transceiving apparatus using same | |
| AU2005306877B2 (en) | Communicating content streams to a remote unit | |
| CN100531381C (en) | The method for IPTV STB/unicast seamless switching based on RTP protocol | |
| KR102014800B1 (en) | A broadcast signal transmitting device, a broadcast signal receiving device, a broadcast signal transmitting method, and a broadcast signal receiving method | |
| US20100315493A1 (en) | Receiving apparatus, transmitting apparatus, communication system, display control method, program, and data structure | |
| US9210354B2 (en) | Method and apparatus for reception and transmission | |
| US20090293093A1 (en) | Content server, information processing apparatus, network device, content distribution method, information processing method, and content distribution system | |
| US20100110162A1 (en) | Method and apparatus for providing 3d still image service over digital broadcasting | |
| KR100842262B1 (en) | System and Method for speeding channel change over Internet Protocol Television Service or Digital Broadcasting Environment | |
| CN105453580A (en) | Reception method, transmission method, reception device, and transmission device | |
| CN103596040B (en) | Television receiving system in double modes of digital television terrestrial multimedia broadcasting and internet | |
| JP2014531823A (en) | Broadcast content playback method and apparatus in broadcast system | |
| KR20080108819A (en) | Method for channel switching, method and apparatus for performing the method | |
| CN101594538A (en) | A kind of advertisement in digital television player method and system | |
| CN102469346B (en) | Method and system for generating interactive film played at one-way digital television receiving terminal | |
| Hara et al. | Celebrating the launch of 8K/4K UHDTV satellite broadcasting and progress on full-featured 8K UHDTV in Japan | |
| CN107018428A (en) | A kind of digital television system, headend equipment and set top box | |
| CN106961623A (en) | A kind of digital television system, headend equipment and set top box | |
| JP3262539B2 (en) | Data broadcasting system and data receiving apparatus applied to the system | |
| CN106034259A (en) | Router and broadcasting method for multipath broadcast digital television signals | |
| US8387105B1 (en) | Method and a system for transmitting video streams | |
| CN103281585A (en) | Set top box (STB) device of Internet protocol television (IPTV) | |
| CN112738609A (en) | Multi-channel video stream transmission method and device and multi-channel video stream playing system | |
| CN101540897A (en) | Interactive television program stream time stamp issuing mechanism for cable TV network | |
| CN108322767A (en) | The live broadcasting method and system of IPTV |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170804 |
|
| RJ01 | Rejection of invention patent application after publication |