CN114157900A - Smart television system and DVB-S2 signal processing method - Google Patents
Smart television system and DVB-S2 signal processing method Download PDFInfo
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- CN114157900A CN114157900A CN202210119511.XA CN202210119511A CN114157900A CN 114157900 A CN114157900 A CN 114157900A CN 202210119511 A CN202210119511 A CN 202210119511A CN 114157900 A CN114157900 A CN 114157900A
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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
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/43607—Interfacing a plurality of external cards, e.g. through a DVB Common Interface [DVB-CI]
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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
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/20—Adaptations for transmission via a GHz frequency band, e.g. via satellite
Abstract
The invention provides an intelligent television system and a DVB-S2 signal processing method, which relate to the field of signal processing, and the intelligent television system comprises: forming a television local area network by more than two intelligent televisions and a central controller according to preset rules; each intelligent television comprises a television main body, a satellite digital set top box and a photoelectric converter; the satellite digital set-top box comprises a set-top box control system and an antenna; the intelligent control system is in signal connection with the set top box control system, and the antenna is in signal connection with the set top box control system; the photoelectric converter comprises an optical port and an electric port, the electric port is respectively in signal connection with the corresponding intelligent control system and the corresponding set top box control system, and the optical ports of all the intelligent televisions are respectively in signal connection with the central controller. The intelligent television system can realize the function of reasonably configuring the satellite bandwidth on the basis of not greatly changing the hardware structure of the intelligent television.
Description
Technical Field
The invention relates to the field of signal processing, in particular to a smart television system and a DVB-S2 signal processing method.
Background
Data interaction rates between the satellite and different satellite televisions are limited by environmental influences and have great differences, for example, when the satellite televisions are located at low floors of high-rise dense areas, due to the influence of building sheltering, the communication rate between the satellite televisions and the satellite is low, and the use requirements of users cannot be well met.
Disclosure of Invention
The invention provides an intelligent television system and a DVB-S2 signal processing method, wherein the intelligent television system interconnects television control systems and antennas in all intelligent televisions within a certain range through photoelectric converters and performs data center control by using a central controller, and can realize the function of reasonably configuring satellite bandwidth on the basis of not greatly changing the hardware structure of the intelligent television; the DVB-S2 signal processing method based on the intelligent television system can realize reasonable distribution and use of the communication bandwidth of the DVB-S2 signals of the intelligent television in the system through data control and software control, and meets the use requirements of users in the system.
Correspondingly, the invention also provides an intelligent television system, which comprises:
forming a television local area network by more than two intelligent televisions and a central controller according to preset rules;
each intelligent television comprises a television main body, a satellite digital set top box and a photoelectric converter;
the television main body comprises a television control system, and the satellite digital set-top box comprises a set-top box control system and an antenna;
the television control system is in signal connection with the set top box control system, and the antenna is in signal connection with the set top box control system;
the photoelectric converter comprises an optical port and an electric port, the electric port is respectively in signal connection with a corresponding television control system and a corresponding set top box control system, and the optical ports of all the intelligent televisions are respectively in signal connection with the central controller.
In an optional implementation manner, the signal connection of the optical ports of all the smart tvs to the central controller respectively includes:
and the optical ports of all the intelligent televisions are respectively accessed into an optical fiber communication machine room, and the optical ports of all the intelligent televisions are respectively accessed onto the central controller based on optical splitters at one end of the optical fiber communication machine room.
Correspondingly, the invention also provides a DVB-S2 signal processing method, which is characterized by comprising the following steps:
the method comprises the steps that a central controller regularly acquires the DVB-S2 signal demand rate and the DVB-S2 signal input rate of each intelligent television in a television local area network, the intelligent televisions with the DVB-S2 signal demand rate smaller than the DVB-S2 signal input rate are classified into limited televisions, and the rest televisions except the limited televisions in the television local area network are redundant televisions;
receiving DVB-S2 signal requirement data of the limited television from a television control system in the limited television by using a central controller;
the central controller distributes DVB-S2 signal requirement data of the limited television to a television control system and a set top box control system of the redundant television;
the central controller acquires a return signal of the antenna of the redundant television in real time and forwards the return signal to the television control system and the set top box control system of the limited television;
and the limited television processes the return signal based on the corresponding set top box control system, and screens out the corresponding DVB-S2 signal demand data from the return signal for playing through the corresponding television control system based on the DVB-S2 signal demand data.
In an optional embodiment, the distributing the DVB-S2 signal requirement data of the limited tv to the tv control system and the set-top box control system of the redundant tv by the central controller further includes:
and the television control system of the redundant television concurrently transmits the DVB-S2 signal requirement data of the redundant television and the DVB-S2 signal requirement data of the limited television to the corresponding set top box control system.
In an optional embodiment, after the central controller distributes the DVB-S2 signal requirement data of the limited tv to the tv control system and the set-top box control system of the redundant tv, the redundant tv receiving the DVB-S2 signal requirement rate of the limited tv filters the return signal through the corresponding tv control system.
An optional embodiment, further comprising:
before the DVB-S2 signal demand rate and the DVB-S2 signal input rate of each intelligent television in the television local area network are obtained at regular time based on the central controller, a first virtual instruction is sent to a television control system of each intelligent television through the central controller;
the first virtual instruction enables the television control system to acquire the maximum communication speed between the corresponding set top box control system and a DVB-S2 signal transmitting station;
the maximum communication rate is the corresponding DVB-S2 signal input rate of the smart television.
An optional embodiment, further comprising:
the redundant televisions have a sorting priority;
based on the sequence of the sequencing priorities, the central controller distributes the DVB-S2 signal requirement data of the limited television to the television control system and the set top box control system of the redundant television.
An optional embodiment, further comprising:
the sorting rule of the sorting priority is as follows:
the difference between the maximum communication rate of the redundant television and the DVB-S2 signal demand rate of the redundant television is large, and the priority of the redundant television is high.
In an optional embodiment, the processing, by the limited tv, the return signal based on the corresponding set-top box control system, and the screening, by the limited tv, the corresponding DVB-S2 signal requirement data from the return signal for playing by the corresponding tv control system based on the DVB-S2 signal requirement data includes:
the limited television play only plays the return signal based on the corresponding television control system control.
In an optional implementation manner, under the condition that all the optical ports of the smart television and the central controller are respectively connected to an internet optical fiber local area network, the photoelectric converter communicates with the central controller through a frequency division multiplexing technology.
In summary, the invention provides an intelligent television system and a DVB-S2 signal processing method, the intelligent television system interconnects the television control systems and the antennas in all the intelligent televisions within a certain range through the photoelectric converters and performs data center control by using the central controller, and on the basis of not greatly changing the hardware structure of the intelligent television, the function of reasonably configuring the satellite bandwidth can be realized; the DVB-S2 signal processing method based on the intelligent television system can realize reasonable distribution and use of the communication bandwidth of the DVB-S2 signals of the intelligent television in the system through data control and software control, and meets the use requirements of users in the system.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent television system according to an embodiment of the present invention.
Fig. 2 is a flow chart of a DVB-S2 signal processing method according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of an intelligent television system according to an embodiment of the present invention.
Correspondingly, the invention also provides an intelligent television system, which comprises:
specifically, based on feasibility considerations, because a cable connection relationship exists in the smart television system, the smart television system of the embodiment of the invention is generally applied to only televisions in a certain area (such as a building and a cell), so that the related smart televisions are incorporated into a television local area network, and accordingly, each television local area network is provided with a central controller.
Specifically, each intelligent television comprises a television main body, a satellite digital set top box and a photoelectric converter; the television main body refers to the general name of other structures except a satellite digital set top box and a photoelectric converter in the intelligent television, the satellite digital set top box is used for receiving and analyzing satellite signals to process and play the television main body and confirm functions (such as channel switching) of the television main body, and the photoelectric converter is a part for mutual conversion of optical signals and electric signals.
Specifically, for the content related to the embodiment of the present invention, the television main body includes a television control system, and the television control system refers to a hardware platform in charge of data processing in the television main body and supporting software loaded on the hardware platform.
Specifically, the satellite digital set-top box comprises a set-top box control system and an antenna, wherein the set-top box control system is matched with a hardware platform in charge of data processing in the satellite digital set-top box and software loaded on the hardware platform, and the antenna is an entity structure for receiving satellite signals.
Basically, the television control system is in signal connection with the set-top box control system so as to form data interaction between the television control system and the set-top box control system.
Basically, the antenna is in signal connection with the set-top box control system, so that the set-top box control system and external equipment (such as a satellite or a transmitting base station) form data interaction.
Basically, the photoelectric converter comprises an optical port and an electrical port, the electrical port is respectively in signal connection with a corresponding television control system and a corresponding set top box control system, and the optical ports of all the intelligent televisions are respectively in signal connection with the central controller.
In an optional implementation manner, the signal connection of the optical ports of all the smart tvs to the central controller respectively includes:
and the optical ports of all the intelligent televisions are respectively accessed into an optical fiber communication machine room, and the optical ports of all the intelligent televisions are respectively accessed onto the central controller based on optical splitters at one end of the optical fiber communication machine room.
In the intelligent television system of the embodiment of the invention, each intelligent television basically keeps the original structure, the added structure is that a photoelectric converter is introduced, the connection objects of the electric port of the photoelectric converter are a television control system and an antenna respectively, and the connection object of the optical port of the photoelectric converter is an optical fiber station; in practical implementation, a general household will have an optical fiber for home, and the optical fiber station can be understood as an aggregation point (optical fiber communication room) of the optical fiber for home in a building, and then a central controller is accessed at the aggregation point to perform data interconnection on the smart television in the system.
Specifically, under the condition that all the optical ports of the smart television and the central controller are respectively connected to an internet optical fiber local area network, the photoelectric converter communicates with the central controller through a frequency division multiplexing technology.
Fig. 2 shows a flow chart of a DVB-S2 signal processing method of an embodiment of the invention. Correspondingly, the embodiment of the invention also provides a DVB-S2 signal processing method, which comprises the following steps:
s101: classifying the smart televisions in the television local area network in real time;
specifically, the required speed of a DVB-S2 signal and the input speed of a DVB-S2 signal of each intelligent television in a television local area network are obtained at regular time based on a central controller, the intelligent television with the required speed of the DVB-S2 signal being smaller than the input speed of the DVB-S2 signal is classified as a limited television, and the rest televisions except the limited television in the television local area network are redundant televisions.
Specifically, DVB-S2 has several important technical characteristics:
the DVB-S2 standard allows a transmitting station to optimize the transmission parameters of data frames sent to different receiving stations based on different conditions at the receiving station, using a Variable Coded Modulation (VCM) scheme during transmission, without having to reserve extra margin for worst case transmission. In the interactive application of DVB-S2, the Variable Code Modulation (VCM) function is combined with the application of a feedback channel to form a new application mode, namely Adaptive Code Modulation (ACM);
in addition, the DVB-S2 can provide a plurality of modulation modes with higher frequency band utilization rate except QPSK, such as 8PSK, 16APSK, 32APSK and the like, reduces amplitude variation, can adapt to satellite transmission channels with relatively poor linear characteristics, and enables the high-level modulation mode to be transmitted through the satellite channels; the choice of modulation scheme depends on the choice of the transmitting station and on the signal transmission between the transmitting station and the receiving station.
Based on the two characteristics, combined with practical analysis, in the system, the position of each smart television is different, the data receiving capacity of the satellite digital set-top box is different, the highest communication speed allowed between the satellite digital set-top box and a transmitting station (namely a satellite) is different, and for each smart television, bandwidth redundancy or insufficient bandwidth can theoretically exist in each smart television according to the difference between data required to be played and the upper limit of the communication capacity, and the signal processing method of the embodiment of the invention utilizes the characteristics to achieve the purpose of bandwidth balance in the system.
Specifically, in order to know the bandwidth redundancy and insufficiency of the intelligent televisions in the system, the DVB-S2 signal demand rate and the DVB-S2 signal input rate of each intelligent television in the television local area network are acquired on the basis of the timing of the central controller. Specifically, the required rate (substantially bandwidth) of the DVB-S2 signal is determined according to the program requested by the user, while the input rate (substantially bandwidth) of the DVB-S2 signal is determined by the maximum communication rate between the satellite digital set-top box and the satellite.
Before the required speed of a DVB-S2 signal and the input speed of a DVB-S2 signal of each intelligent television in a television local area network are obtained at regular time based on a central controller, a first virtual instruction is sent to a television control system of each intelligent television through the central controller;
the first virtual instruction enables the television control system to acquire the maximum communication speed between the corresponding set top box control system and a DVB-S2 signal transmitting station;
the maximum communication rate is the corresponding DVB-S2 signal input rate of the smart television.
It should be noted that the central controller can directly load data to the antenna through the photoelectric converter, and is synchronous, and the central controller guides the television control system not to play the received information through the photoelectric converter, so that the deceptive data and the return data corresponding to the deceptive data only exist in the smart television, and cannot be sensed from the outside. To realize the function, only the program of the television control system needs to be improved, the hardware processing is not involved, no special requirements are required for the structure of the intelligent television, and the practical convenience is good.
According to the situations of bandwidth redundancy and bandwidth insufficiency, the intelligent televisions in the system are classified into two types, namely redundant televisions and limited televisions.
And the redundant television has a priority according to the degree of bandwidth insufficiency;
in practical implementation, based on the order of the priority, the central controller distributes the DVB-S2 signal requirement data of the limited tv to the tv control system and the set-top box control system of the redundant tv.
The sorting rule of the sorting priority is as follows:
the difference between the maximum communication rate of the redundant television and the DVB-S2 signal demand rate of the redundant television is large, and the priority of the redundant television is high.
I.e. the more bandwidth is insufficient, the higher its allocation priority to meet the actual needs of the user.
S102: receiving DVB-S2 signal requirement data of the limited television from a television control system in the limited television by using a central controller;
the limited television indicates that the communication bandwidth of the intelligent television can not meet the requirements of users, and the central controller needs to correspondingly acquire DVB-S2 signal requirement data of the limited television so as to perform subsequent operations.
Specifically, the DVB-S2 signal of the limited tv requires a data source, which may be a tv control system or an antenna, and in the specific implementation, since the information acquired by the antenna needs to perform reverse parsing on the DVB-S2 signal to restore the data, in the actual implementation, the information is generally acquired from the tv control system to reduce the difficulty in information processing.
Specifically, the television control system of the redundant television concurrently transmits the DVB-S2 signal requirement data of the redundant television and the DVB-S2 signal requirement data of the limited television to the corresponding set top box control system.
S103: the central controller distributes DVB-S2 signal requirement data of the limited television to a television control system and a set top box control system of the redundant television;
specifically, the steps include two aspects:
on the first hand, the DVB-S2 signal demand data is directly distributed to the set-top box control system of the redundant television, the signal can be directly loaded on the antenna in an optional mode, the purpose of information decoy is achieved, and the antenna of the redundant television is utilized to obtain the return data of the satellite;
in a second aspect, the DVB-S2 signal requirement data is distributed directly to the television control system for redundant television to avoid the television control system from playing back satellite signals from restricted television.
By the operation mode, the data of the limited television can be prevented from influencing the data of the redundant television.
Namely, after the central controller distributes the DVB-S2 signal requirement data of the limited television to the television control system and the set top box control system of the redundant television, the redundant television receiving the DVB-S2 signal requirement rate of the limited television filters the return signal through the corresponding television control system.
S104: the central controller acquires a return signal of the antenna of the redundant television in real time and forwards the return signal to the television control system and the set top box control system of the limited television;
specifically, a return signal of the satellite is received by an antenna of the redundant television at the first time, and is correspondingly transmitted to the central controller through the photoelectric module, and the central controller transmits the signal (without decoding) to the corresponding limited television, and specifically, the content of the return signal is forwarded to the television control system of the limited television and the set-top box control system in two aspects:
in a first aspect, the step of forwarding the return signal to the set-top box control system of the limited television means that the return signal is loaded to an antenna of the limited television through a photoelectric conversion module, and then the set-top box control system receives and normally processes the return signal.
In a second aspect, the forwarding of the return signal to the television control system of the limited television means that the television control system plays a corresponding signal from the set-top box control system, and the process is a software processing process.
S105: and the limited television processes the return signal based on the corresponding set top box control system, and screens out the corresponding DVB-S2 signal demand data from the return signal for playing through the corresponding television control system based on the DVB-S2 signal demand data.
By the implementation mode, the function that the limited television plays the signals from the redundant television is realized on the basis of not changing hardware.
Further, the limited television processes the return signal based on the corresponding set-top box control system, and the limited television screens out the corresponding DVB-S2 signal requirement data from the return signal for playing through the corresponding television control system based on the DVB-S2 signal requirement data, including:
the limited television play only plays the return signal based on the corresponding television control system control.
The original received signal of the limited television is filtered by the television control system, and is not played, and only the return signal is played, and the function can be realized by controlling the software of the television control system.
To sum up, the embodiment of the invention provides an intelligent television system and a DVB-S2 signal processing method, wherein the intelligent television system interconnects television control systems and antennas in all intelligent televisions within a certain range through photoelectric converters and performs data center control by using a central controller, and can realize the function of reasonably configuring satellite bandwidth on the basis of not greatly changing the hardware structure of the intelligent televisions; the DVB-S2 signal processing method based on the intelligent television system can realize reasonable distribution and use of the communication bandwidth of the DVB-S2 signals of the intelligent television in the system through data control and software control, and meets the use requirements of users in the system.
The smart television system and the DVB-S2 signal processing method provided by the embodiment of the present invention are described in detail above, and a specific example is applied in the present disclosure to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: read Only Memory (ROM), Random Access Memory (RAM), magnetic or optical disks, and the like.
Claims (10)
1. An intelligent television system, comprising:
forming a television local area network by more than two intelligent televisions and a central controller according to preset rules;
each intelligent television comprises a television main body, a satellite digital set top box and a photoelectric converter;
the television main body comprises a television control system, and the satellite digital set-top box comprises a set-top box control system and an antenna;
the television control system is in signal connection with the set top box control system, and the antenna is in signal connection with the set top box control system;
the photoelectric converter comprises an optical port and an electric port, the electric port is respectively in signal connection with a corresponding television control system and a corresponding set top box control system, and the optical ports of all the intelligent televisions are respectively in signal connection with the central controller.
2. The intelligent television system as claimed in claim 1, wherein the signal connection of the optical ports of all the intelligent televisions to the central controller respectively comprises:
and the optical ports of all the intelligent televisions are respectively accessed into an optical fiber communication machine room, and the optical ports of all the intelligent televisions are respectively accessed onto the central controller based on optical splitters at one end of the optical fiber communication machine room.
3. A DVB-S2 signal processing method, implemented based on the smart tv system of claim 1 or 2, comprising:
the method comprises the steps that a central controller regularly acquires the DVB-S2 signal demand rate and the DVB-S2 signal input rate of each intelligent television in a television local area network, the intelligent televisions with the DVB-S2 signal demand rate smaller than the DVB-S2 signal input rate are classified into limited televisions, and the rest televisions except the limited televisions in the television local area network are redundant televisions;
receiving DVB-S2 signal requirement data of the limited television from a television control system in the limited television by using a central controller;
the central controller distributes DVB-S2 signal requirement data of the limited television to a television control system and a set top box control system of the redundant television;
the central controller acquires a return signal of the antenna of the redundant television in real time and forwards the return signal to the television control system and the set top box control system of the limited television;
and the limited television processes the return signal based on the corresponding set top box control system, and screens out the corresponding DVB-S2 signal demand data from the return signal for playing through the corresponding television control system based on the DVB-S2 signal demand data.
4. The DVB-S2 signal processing method according to claim 3, wherein the central controller distributing the DVB-S2 signal requirement data of the limited tv to the tv control system and the set-top box control system of the redundant tv further comprises:
and the television control system of the redundant television concurrently transmits the DVB-S2 signal requirement data of the redundant television and the DVB-S2 signal requirement data of the limited television to the corresponding set top box control system.
5. The DVB-S2 signal processing method according to claim 3, wherein the central controller distributes the DVB-S2 signal requirement data of the limited tv to the tv control system and the set-top box control system of the redundant tv, and the redundant tv receiving the DVB-S2 signal requirement rate of the limited tv filters the return signal through the corresponding tv control system.
6. The DVB-S2 signal processing method according to claim 3, further comprising:
before the DVB-S2 signal demand rate and the DVB-S2 signal input rate of each intelligent television in the television local area network are obtained at regular time based on the central controller, a first virtual instruction is sent to a television control system of each intelligent television through the central controller;
the first virtual instruction enables the television control system to acquire the maximum communication speed between the corresponding set top box control system and a DVB-S2 signal transmitting station;
the maximum communication rate is the corresponding DVB-S2 signal input rate of the smart television.
7. The DVB-S2 signal processing method according to claim 6, further comprising:
the redundant televisions have a sorting priority;
based on the sequence of the sequencing priorities, the central controller distributes the DVB-S2 signal requirement data of the limited television to the television control system and the set top box control system of the redundant television.
8. The DVB-S2 signal processing method according to claim 7, further comprising:
the sorting rule of the sorting priority is as follows:
the difference between the maximum communication rate of the redundant television and the DVB-S2 signal demand rate of the redundant television is large, and the priority of the redundant television is high.
9. The DVB-S2 signal processing method according to claim 3, wherein the limited tv processes the return signal based on a corresponding set-top box control system, and the limited tv screens out the corresponding DVB-S2 signal requirement data from the return signal for playing through the corresponding tv control system based on the DVB-S2 signal requirement data comprises:
the limited television play only plays the return signal based on the corresponding television control system control.
10. The DVB-S2 signal processing method according to claim 3, wherein the optical-to-electrical converter communicates with the central controller through frequency division multiplexing technology under the condition that all the optical ports of the smart tv and the central controller are respectively connected to an internet fiber optic lan.
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| CN106792835A (en) * | 2017-02-13 | 2017-05-31 | 上海斐讯数据通信技术有限公司 | The control method and system of a kind of shared bandwidth of wireless device |
| CN214205698U (en) * | 2020-12-16 | 2021-09-14 | 广州长嘉电子有限公司 | DVB-S2 standard smart television |
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