CN111935524B

CN111935524B - Efficient and stable method for carrying out network sharing on coaxial signals

Info

Publication number: CN111935524B
Application number: CN202010851112.3A
Authority: CN
Inventors: 罗桥水; 宋金宝; 付守伟
Original assignee: Guizhou Broadcasting & Tv Information Network Co ltd
Current assignee: Guizhou Broadcasting & Tv Information Network Co ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2022-10-11
Anticipated expiration: 2040-08-21
Also published as: CN111935524A

Abstract

The invention has disclosed a carries on the high-efficient stable method of the network sharing to the coaxial signal, it can apply to the terminal station in the field of radio and television, this terminal station includes a channel of TUNER and a channel of PVR apparatus at least, said method comprises obtaining DVB media data transmitted through the coaxial signal through TUNER and DEMUX module in the terminal station first, combine the operation to need to integrate CA module to descramble according to reality, DVB media data record module through PVR and can keep the data in the buffer memory but not the file, record and push away and flow the resource management module and send to various customer ends that have already requested to broadcast with the IP flow of the steady high efficiency finally; the invention provides more DVB media data services which are not limited to live broadcasting and on-demand broadcasting, and can enjoy high-quality and stable visual experience.

Description

Efficient and stable method for carrying out network sharing on coaxial signals

Technical Field

The invention belongs to the technical field of set top box application, and particularly relates to an efficient and stable method for carrying out network sharing on coaxial signals.

Background

With the development of technology, the decoding and video/audio coding formats (especially video) are continuously developed, the cost for attracting users to seize entrances is higher and higher, the intelligent set-top box is just a serious asset of radio and television operators, meanwhile, the intelligent television serving as the unique presentation interface is accelerating the self-building ecology, the operation mode that the radio and television occupies the entrances of the users by the set-top box is continuously impacted, the users are continuously lost, and under the critical condition, the low-cost coaxial gateway is in line with the operation. The efficient and stable method for converting the coaxial signal into the IP signal is specially used for the low-cost coaxial gateway, so that the configuration requirements on a CPU and a memory used by the gateway are low, and the transmission requirements of converting the standard-definition, high-definition and ultrahigh-definition coaxial signal into the IP signal on the market at present can be met.

Disclosure of Invention

The technical problem to be solved by the present invention is to provide an efficient and stable method for network sharing of coaxial signals, which has high quality and stable playing experience and increases the service life of an application device.

The technical scheme of the invention is as follows: a high-efficient stable method for carrying on the network sharing to the coaxial signal, apply to the terminal station in the radio and television field, the terminal station includes TUNER of a channel, PVR apparatus and DEMUX module of a channel at least; the PVR device comprises a PVR recording module; the method comprises the following steps:

step 1, firstly, acquiring DVB media data transmitted by coaxial signals through a TUNER module and a DEMUX module in a terminal;

step 2, the DVB media data is recorded by the PVR module to be stored in a cache instead of a file;

and 3, sending the IP stream to various clients which have requested to be played in a stable and efficient manner through the uniform resource management module.

Specifically, the unified resource manager in step 3 implements sharing of DVB media data, and when a client is accessed via a resource string and is determined to be a new frequency point or a new program via the DVB resource manager, a new PVR is started and recorded data is sent to the client; when the unified resource manager judges that the program requested currently is requested by other equipment, the unified resource manager does not apply for resources but performs resource sharing, and informs the sending module to send more IP data of the program to the client.

Specifically, when the data is transmitted to the client, the sleep waiting sets are uniformly quantitative data, and the data is divided into numerical values which are smaller than the MTU and are integral multiples of the TS Packet size at one time to be sent circularly until all the data is sent out.

Specifically, the uniform resource manager comprises a DVB resource management module and a PVR streaming recording module, and can realize the function of watching the same program by multiple devices at the same time according to the DVB resource coordination management capability provided by the hardware TUNER and the PVR.

Specifically, after obtaining the DVB media data through the TUNER and DEMUX modules, the DVB media data is recorded through the PVR module, and the recorded content is directly sent through a socket.

Specifically, the IP stream only needs to pass through a universal resource string at the client to trigger the terminal to send the required media network stream to the client.

More specifically, the resource string is multicast or RTSP or HTTP.

More specifically, the provided IP signal is accessed in HTTP and the corresponding media data is reliably transmitted in TCP.

Compared with the prior art, the invention has the beneficial effects that:

1. the TUNER, the DEMUX and the uniform resource manager are introduced, the existing hardware resources are utilized to the maximum extent, and more DVB media data services which are not limited to live broadcasting and on-demand broadcasting are provided;

2. the recording and the sending are transmitted by adopting a memory, HTTP is preferentially selected by a transmission protocol, so that not only is the development threshold of a playing client reduced, but also frequent operation of FLASH can be avoided, and further the stable operation of the device applied by the method can be ensured and the service life of the device can be prolonged;

3. the method has the advantages that the experience effect in the local area network is optimal, the flow cost of the mobile terminal cannot be generated when the radio and television video resources are watched, and the high-quality and stable visual experience is finally enjoyed through various transmission ways such as wired or wireless transmission;

4. the data transmission aspect is efficient and stable in that a simplified, efficient and stable transmission algorithm is adopted as a basic guarantee.

Drawings

FIG. 1 is a flow chart of an efficient and stable transmission algorithm;

FIG. 2 is a flow of the uniform resource management module processing a new request;

fig. 3 is a processing flow of starting, starting and stopping the destruction of the PVR recording module.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, and not all 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.

As shown in fig. 2-3, an efficient and stable method for network sharing of coaxial signals is applied to a terminal in the field of broadcasting and television, where the terminal includes at least one TUNER, one PVR device, and a DEMUX module; the PVR device comprises a PVR recording module; the method comprises the following steps:

step 2, the DVB media data is recorded in a PVR module to be stored in a cache instead of a file, the DVB media data is acquired through a TUNER and DEMUX module and then recorded through the PVR module, and recorded contents are directly sent through a socket;

before the DVB media data is recorded by the PVR module, whether the DVB media data is scrambled data is judged, and when the data is scrambled, a CA module is integrated according to the requirement for descrambling;

step 3, sending the IP stream with stability and high efficiency to various clients which have requested to play through the uniform resource management module; when the client is accessed by the resource string and is judged to be a new frequency point or a new program by the DVB resource manager, a PVR is newly started and the recorded data is sent to the client; when the unified resource manager judges that the program requested currently is requested by other equipment, the unified resource manager does not apply for resources but executes resource sharing, and informs a sending module to send more IP data of the program to the client; when data are transmitted to a client, dormancy waiting is carried out to collect uniform quantitative data, the data are divided into numerical values which are smaller than MTU and are integral multiples of TS Packet size at one time, and the data are circularly transmitted until all the data are transmitted; the IP flow can trigger the terminal to send the required media network flow to the client terminal only through a universal resource string at the client terminal.

The resource string is multicast or RTSP or HTTP; the provided IP signal is accessed by HTTP, and the reliable transmission of the corresponding media data is carried out in a TCP mode.

The unified resource manager comprises a DVB resource management module and a PVR stream recording module, provides DVB resource coordination management capability according to the support capability of hardware TUNER and PVR, and can realize the function of watching the same program by multiple devices at the same time with the greatest strength.

The DVB resource management module carries out global recording on each device requesting for playing, reasonably distributes TUNER and PVR resources according to the watching resource content of the request and the existing global recording, so that the PVR resources record single video programs or all programs of a single frequency point, and can support the maximum number of playing request devices to watch the programs of the maximum number of PVR resources or the programs of the frequency point of the maximum number of PVR resources at the same time according to the configuration within the range allowed by the bandwidth.

The PVR recording module can record programs or frequency points with the maximum number of PVR resources while maximally supporting recording according to PVR capacity provided by hardware, video data corresponding to PID (proportion integration differentiation) is captured from cable streams and recorded, the recorded streams are network streams, and the function of pushing to multiple sets in one-path recording can be realized by combining the recording and stream pushing resource management module.

The unified resource management function can support that a maximum number of programs with the maximum number of PVR resources can be watched by the maximum number of DVB broadcast request devices at the same time within the range allowed by the bandwidth (for example, the PVR resource of the terminal is n (n is greater than or equal to 2), then the PVR can record the program data of n different frequency points at the same time, and then within the range allowed by the bandwidth, 2, 3, 4 or even more programs can be provided to watch the programs of the n different frequency points recorded by the PVR at the same time and smoothly by the broadcast request devices, and according to the configuration of different requirements, the programs of the n different frequency points can be n different programs, or all the programs in the n different frequency points, namely, multiple programs of n).

As shown in fig. 1, when DVB media data is transmitted to a client, the algorithm flow executed is: firstly, recording data through an interface for acquiring recorded data provided by a chip, entering a sending process if the data is normal after the data is acquired, recording a time point A at the moment in the entering of the sending process, wherein the sending process is a cyclic judgment sending process, judging that M bytes are sent firstly if a residual sending quantity X is greater than M, and directly sending X and exiting the sending process if the residual sending quantity X is less than or equal to M, wherein M is an integral multiple of the size of TS Package and is less than the MTU value of a local area network where the device is located, and in addition, the initial value of X is the acquired recorded data and is modified in the continuous sending process. After the sending process is finished, recording the time point B at the moment, and finally obtaining the time according to the optimal standard sleep time running on the device, wherein the time needs repeated experiments and is constant according to the packet loss rate in the process of transmitting large data volume under extreme conditions, and the constant is related to the CPU performance and the memory capacity of the device. With this standard sleep time and points a, B, it is known for the most recent data transmission and for how long it will still need to sleep for the next stable data acquisition and transmission.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention.

Claims

1. A high-efficient stable method for carrying on the network sharing to the coaxial signal, apply to the terminal station in the field of radio and television, the terminal station includes TUNER of a channel at least, PVR apparatus of a channel and DEMUX module of a channel; the PVR device comprises a PVR recording module; the method is characterized by comprising the following steps:

step 3, sending the IP stream with stability and high efficiency to various clients which have requested to play through the uniform resource management module; when the data is transmitted to the client, the dormancy waiting sets a certain amount of data, the data is divided into numerical values which are smaller than MTU and are integral multiples of the TS Packet size at one time for cyclic transmission until all the data are transmitted,

when transmitting DVB media data to a client, the algorithm flow executed is: firstly, recording data is acquired through an acquisition recording data interface provided by a chip, and then, if the data is normal, entering a sending process, recording a time point A at the moment in the entering sending process, wherein the sending process is a circulating judgment sending process, judging that M bytes are sent firstly if a residual sending quantity X is greater than M, and if the residual sending quantity X is less than or equal to M, directly sending X and exiting the sending process, wherein M is an integral multiple of the size of TS Package and is less than the MTU value of a local area network where the device is located, and in addition, the initial value of X is the acquired recording data and is modified in the continuous sending process; after the transmission process is finished, recording the time point B at the moment, and finally, according to the optimal standard sleep time running on the device and the time points A and B, knowing how long the sleep time is still needed for the latest data transmission and the next stable data acquisition and transmission.

2. The method of claim 1, wherein the method comprises: and in the step 2, judging whether the DVB media data is scrambled data before being recorded by the PVR module, and integrating a CA module for descrambling as required when the data is scrambled.

3. The method of claim 1, wherein the method comprises the following steps: in the step 3, the unified resource manager realizes the sharing of DVB media data, and when a client is accessed by a resource string and is judged to be a new frequency point or a new program by the DVB resource manager, a PVR is newly started and recorded data is sent to the client; when the unified resource manager judges that the program requested currently is requested by other equipment, the unified resource manager does not apply for resources but executes resource sharing, and informs the sending module to send more IP data of the program to the client.

4. A method for efficiently stabilizing a coaxial signal for network sharing according to claim 3, wherein: the unified resource manager comprises a DVB resource management module and a PVR stream recording module, and can realize the function of watching the same program by multiple devices at the same time according to the DVB resource coordination management capability provided by the hardware TUNER and the PVR.

5. The method of claim 1, wherein the method comprises: and after the DVB media data are acquired through the TUNER and DEMUX modules, the DVB media data are recorded through the PVR module, and the recorded content is directly sent through a socket.

6. The method of claim 1, wherein the method comprises: the IP stream can trigger the terminal to send the required media network stream to the client terminal only through one universal resource string at the client terminal.

7. The method of claim 6, wherein the method comprises: the resource string is multicast or RTSP or HTTP.

8. The method of claim 7, wherein the method comprises: the provided IP signal is accessed by HTTP, and the reliable transmission of corresponding media data is carried out in a TCP mode.