CN110166550B - Timing broadcasting method and device of digital broadcasting system - Google Patents

Timing broadcasting method and device of digital broadcasting system Download PDF

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Publication number
CN110166550B
CN110166550B CN201910427499.7A CN201910427499A CN110166550B CN 110166550 B CN110166550 B CN 110166550B CN 201910427499 A CN201910427499 A CN 201910427499A CN 110166550 B CN110166550 B CN 110166550B
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broadcasting
task
file
server
broadcast
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CN110166550A (en
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彭友伟
刘雅浪
蔡兆云
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Hunan Comtom Electronic Technology Co ltd
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Hunan Comtom Electronic Technology Co ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H20/00Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/18Arrangements for synchronising broadcast or distribution via plural systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • H04J3/02Details
    • H04J3/06Synchronising arrangements
    • H04J3/0635Clock or time synchronisation in a network
    • H04J3/0638Clock or time synchronisation among nodes; Internode synchronisation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/02Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/06Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

The invention discloses a timing broadcast method of a digital broadcast system.A file server is deployed in a broadcast system server, and the broadcast system server sends timing broadcast task information to broadcast equipment through an instruction channel between the broadcast system server and the broadcast equipment; the broadcasting equipment downloads files through the file server deployed in the broadcasting system server, analyzes the received timing broadcast task information to obtain corresponding information of the files to be downloaded, checks a local memory and verifies the consistency of the downloaded files, then filters the downloaded file data in all the information of the files to be downloaded, and downloads other files through the file server; the broadcasting equipment uses a Network Time Protocol (Network Time Protocol) to carry out Time synchronization with a broadcasting system server, judges whether the playing start Time is reached or not according to a timing broadcasting task, and if so, reads corresponding file contents according to a preset sequence, decodes and plays the corresponding file contents.

Description

Timing broadcasting method and device of digital broadcasting system
Technical Field
The present invention relates to the field of digital broadcasting technologies, and in particular, to a timing broadcasting method and apparatus for a digital broadcasting system.
Background
In a digital broadcasting system, a server generally transmits a digital audio stream to a broadcasting device through a network, and the broadcasting device receives the digital audio stream and then decodes, plays, and amplifies the audio stream to implement a broadcasting service. In the local area network, the network connection between each broadcasting device and the server is stable, and the broadcasting synchronization between the broadcasting devices can be ensured. However, when the digital broadcasting system is deployed on a wide area network, the broadcasting may suffer from a stuck problem due to insufficient access network bandwidth of the broadcasting equipment, network jitter, and the like. The general solution is that the broadcasting equipment buffers a certain number of audio frames and then starts decoding and playing, but this also results in the problem of asynchronous playing among different broadcasting equipment.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art. The invention discloses a timing broadcast method of a digital broadcast system, which comprises deploying a file server in a broadcast system server, and sending timing broadcast task information to a broadcast device by the broadcast system server through an instruction channel between the broadcast system server and the broadcast device; the broadcasting equipment downloads files through the file server deployed in the broadcasting system server, analyzes the received timing broadcast task information to obtain corresponding information of the files to be downloaded, checks a local memory and verifies the consistency of the downloaded files, then filters the downloaded file data in all the information of the files to be downloaded, and downloads other files through the file server; the broadcasting equipment uses a Network Time Protocol (Network Time Protocol) to carry out Time synchronization with a broadcasting system server, judges whether the playing start Time is reached or not according to a timing broadcasting task, and if so, reads corresponding file contents according to a preset sequence, decodes and plays the corresponding file contents.
Furthermore, the File server is an HTTP File server, and performs communication of the broadcasting device through an HTTP protocol, and the HTTP File server includes a time-sharing System File manager and a Virtual File System (Virtual File System) to provide functions of classifying files and switching File index directories.
Furthermore, the analyzing the received timing broadcast task information by the broadcasting device to obtain the corresponding information of the file to be downloaded further comprises: the task information comprises a downloading link of the audio file and an MD5 value of the file, and the broadcasting equipment carries out consistency verification on the downloaded file through checking the MD5 value.
Further, the timed broadcast task includes the following attributes: list of audio files, start of play time of the task, task repetition attribute, task volume, list of broadcast devices.
Further, the timed broadcast task further includes a task priority attribute, and when a plurality of task play time periods overlap, the broadcast device executes a play task with a high priority according to the received task priority.
The invention also discloses a timing broadcast device of the digital broadcast system, which comprises a broadcast server and broadcast equipment connected with the server, wherein the broadcast server comprises: the server communication module is used for deploying a file server in a broadcasting system server, and the broadcasting system server sends timing broadcasting task information to the broadcasting equipment through an instruction channel between the broadcasting system server and the broadcasting equipment; the broadcasting apparatus includes: the downloading module is used for downloading files through the file server deployed in the broadcasting system server; the analysis module is used for analyzing the received timing broadcast task information to obtain corresponding information of the file to be downloaded; the file verification and filtering module is used for checking the local memory, performing consistency verification on the downloaded file, filtering the downloaded file data in all the file information to be downloaded, and downloading other files by the broadcasting equipment through the file server; and the broadcasting equipment Time synchronization module is used for carrying out Time synchronization with the broadcasting system server by using a Network Time Protocol (Network Time Protocol), the broadcasting equipment judges whether the playing start Time is reached according to the timing broadcasting task, and if so, the broadcasting equipment reads corresponding file contents according to a preset sequence, decodes and plays the corresponding file contents.
Furthermore, the server communication module, in which the File server is an HTTP File server, performs communication of the broadcasting device through an HTTP protocol, and includes a time-sharing System File manager and a Virtual File System (Virtual File System) that provide a function of switching File index directories according to File classification.
Furthermore, the file verification and filtering module analyzes the received timing broadcast task information to obtain corresponding file information to be downloaded further includes: the task information comprises a downloading link of the audio file and an MD5 value of the file, and the broadcasting equipment carries out consistency verification on the downloaded file through checking the MD5 value.
Further, the timed broadcast task includes the following attributes: list of audio files, start of play time of the task, task repetition attribute, task volume, list of broadcast devices.
Further, the timed broadcast task further includes a task priority attribute, and when a plurality of task play time periods overlap, the broadcast device executes a task with a high play priority according to the received task priority.
Compared with the prior art, the invention has the following beneficial effects: the audio file is downloaded to the local in advance, and the playing process is not influenced by the network condition, so that the broadcasting effect can be ensured to be smooth; the broadcasting equipment and the server are synchronized in time, so that the time consistency of the broadcasting equipment can be ensured, and meanwhile, the broadcasting equipment can simultaneously start a timing broadcasting task to ensure synchronous playing among the broadcasting equipment; the periodic task broadcasting equipment only needs to download the audio files in the task once, and the server needs to send real-time audio streams to the broadcasting equipment every time the audio files are played by using a live broadcast mode. The method can reduce the flow cost between the periodic task broadcasting equipment and the server.
Drawings
The invention will be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. In the drawings, like reference numerals designate corresponding parts throughout the different views.
Fig. 1 is a flowchart of a timed broadcasting method of a digital broadcasting system of the present invention;
fig. 2 is a block diagram of a timer broadcast apparatus of the digital broadcast system of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, 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.
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 some, not all, embodiments of the present invention. It should be noted that the detailed description set forth in connection with the appended drawings is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described herein may be practiced. The apparatus embodiments and method embodiments described herein are described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, units, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. The terms first, second, etc. in the description and claims of the present invention and in the drawings of the specification, if used in describing various aspects, are used for distinguishing between different objects and not for describing a particular order.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.
The client may be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and a fixed terminal such as a Digital TV, a desktop computer, and the like.
Example one
In the timing broadcast method of a digital broadcast system as shown in fig. 1, a file server is deployed in a broadcast system server, and the broadcast system server sends timing broadcast task information to a broadcast device through an instruction channel between the broadcast system server and the broadcast device; the broadcasting equipment downloads files through the file server deployed in the broadcasting system server, analyzes the received timing broadcast task information to obtain corresponding information of the files to be downloaded, checks a local memory and verifies the consistency of the downloaded files, then filters the downloaded file data in all the information of the files to be downloaded, and downloads other files through the file server; the broadcasting equipment uses a Network Time Protocol (Network Time Protocol) to carry out Time synchronization with a broadcasting system server, judges whether the playing start Time is reached or not according to a timing broadcasting task, and if so, reads corresponding file contents according to a preset sequence, decodes and plays the corresponding file contents.
The File server is an HTTP File server, communication of the broadcasting equipment is carried out through an HTTP protocol, and the HTTP File server comprises a time-sharing System File manager and a Virtual File System (Virtual File System) which provide functions of File classification and File index directory switching.
Furthermore, the analyzing the received timing broadcast task information by the broadcasting device to obtain the corresponding information of the file to be downloaded further comprises: the task information comprises a downloading link of the audio file and an MD5 value of the file, and the broadcasting equipment carries out consistency verification on the downloaded file through checking the MD5 value.
Further, the timed broadcast task includes the following attributes: list of audio files, start of play time of the task, task repetition attribute, task volume, list of broadcast devices.
Further, the timed broadcast task further includes a task priority attribute, and when a plurality of task play time periods overlap, the broadcast device executes a play task with a high priority according to the received task priority.
As described above, the present invention compiles a timed broadcast task in advance in a broadcast system, wherein the timed broadcast task includes the following attributes: the system comprises an audio file list, task starting playing time, task repetition attributes, task volume, task priority and a broadcasting equipment list. And after the timed broadcast task is established, the server sends the task information to the broadcasting equipment. And after receiving the task information, the broadcasting equipment actively downloads the audio files in the task and stores the audio files in the local memory. And the broadcasting equipment actively starts to play the audio file list according to the arrival of the task play starting time.
The broadcasting equipment needs to perform time synchronization with the server at regular time, so that the synchronous playing of the timing broadcasting tasks among the broadcasting equipment can be realized.
The task repetition attribute refers to a periodic task that needs to be played repeatedly at certain intervals, for example, once a day and once a week.
The task priority is used for judging that the tasks are played preferentially when the two task playing time periods are overlapped. And the equipment broadcasts the tasks with high priority according to the task priority.
Preferably, for deployment in a broadcast system server, other types of file servers, such as ftp file servers, may be used for construction, and other types of file download protocols, such as ftp protocols, may be used.
Preferably, for the verification method of the downloaded file, in this embodiment, other HASH signatures may be used instead of the MD5 value of the file, such as SHA 1.
Example two
The present embodiment provides a timing broadcasting apparatus of a digital broadcasting system, as shown in fig. 2, including a broadcasting server and a broadcasting device connected to the server, the broadcasting server including: the server communication module is used for deploying a file server in a broadcasting system server, and the broadcasting system server sends timing broadcasting task information to the broadcasting equipment through an instruction channel between the broadcasting system server and the broadcasting equipment; the broadcasting apparatus includes: the downloading module is used for downloading files through the file server deployed in the broadcasting system server; the analysis module is used for analyzing the received timing broadcast task information to obtain corresponding information of the file to be downloaded; the file verification and filtering module is used for checking the local memory, performing consistency verification on the downloaded file, filtering the downloaded file data in all the file information to be downloaded, and downloading other files by the broadcasting equipment through the file server; and the broadcasting equipment Time synchronization module is used for carrying out Time synchronization with the broadcasting system server by using a Network Time Protocol (Network Time Protocol), the broadcasting equipment judges whether the playing start Time is reached according to the timing broadcasting task, and if so, the broadcasting equipment reads corresponding file contents according to a preset sequence, decodes and plays the corresponding file contents.
Furthermore, the server communication module, in which the File server is an HTTP File server, performs communication of the broadcasting device through an HTTP protocol, and includes a time-sharing System File manager and a Virtual File System (Virtual File System) that provide a function of switching File index directories according to File classification.
Furthermore, the file verification and filtering module analyzes the received timing broadcast task information to obtain corresponding file information to be downloaded further includes: the task information comprises a downloading link of the audio file and an MD5 value of the file, and the broadcasting equipment carries out consistency verification on the downloaded file through checking the MD5 value.
Further, the timed broadcast task includes the following attributes: list of audio files, start of play time of the task, task repetition attribute, task volume, list of broadcast devices.
Further, the timed broadcast task further includes a task priority attribute, and when a plurality of task play time periods overlap, the broadcast device executes a task with a high play priority according to the received task priority.
The broadcasting equipment downloads the audio file of the timing task and stores the audio file in a local buffer, and when the task playing time is up, the audio file is read and decoded for playing.
In this embodiment, the broadcasting device and the server perform time synchronization to ensure synchronous broadcasting of the timing task. The timing task information comprises task priority information, and when a plurality of task playing time periods are overlapped, the broadcasting equipment plays the tasks with high priority according to the task priority.
Meanwhile, the timing task information comprises the playing sequence of the audio files, and the broadcasting equipment plays the audio files in sequence.
The timing task information comprises a download link of the audio file and an MD5 value of the file, and the broadcasting equipment checks the MD5 value of the downloaded audio file in the memory and filters the downloaded audio file. The device need only download audio files that are not present in the local memory.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Although the invention has been described above with reference to various embodiments, it should be understood that many changes and modifications may be made without departing from the scope of the invention. It is therefore intended that the foregoing detailed description be regarded as illustrative rather than limiting, and that it be understood that it is the following claims, including all equivalents, that are intended to define the spirit and scope of this invention. The above examples are to be construed as merely illustrative and not limitative of the remainder of the disclosure. After reading the description of the invention, the skilled person can make various changes or modifications to the invention, and these equivalent changes and modifications also fall into the scope of the invention defined by the claims.

Claims (8)

1. A timing broadcast method of a digital broadcast system is characterized in that a file server is arranged in a broadcast system server, and the broadcast system server sends timing broadcast task information to broadcast equipment through an instruction channel between the broadcast system server and the broadcast equipment; the broadcasting equipment downloads files through the file server deployed in the broadcasting system server, analyzes the received timing broadcast task information to obtain corresponding information of the files to be downloaded, checks a local memory and verifies the consistency of the downloaded files, then filters the downloaded file data in all the information of the files to be downloaded, and downloads other files through the file server; the broadcasting equipment uses a network time protocol to carry out time synchronization with a broadcasting system server, judges whether the playing start time is reached or not according to a timing broadcasting task, and if so, reads corresponding file contents according to a preset sequence, decodes and plays the corresponding file contents;
the file server is an HTTP file server, the communication of the broadcasting equipment is carried out through an HTTP protocol, and the HTTP file server comprises a time-sharing system file manager and a virtual file system which provide file classification and file index directory switching functions;
the said broadcaster analyzes the received timing broadcast task information, and the obtaining the corresponding file information to be downloaded further includes: the task information comprises a downloading link of an audio file and an MD5 value of the file, and the broadcasting equipment carries out consistency verification on the downloaded file through checking the MD5 value; the timed broadcast task comprises the following attributes: the system comprises an audio file list, task starting playing time, task repetition attributes, task volume, task priority and a broadcasting equipment list, wherein the task repetition attributes are periodic tasks which are repeatedly played at certain intervals, the task priority is the judgment of the task which is preferentially played when two task playing time periods are overlapped, and the broadcasting equipment plays the task with high priority according to the task priority; after the timing broadcast task is established, the broadcast system server sends task information to the broadcast equipment, after the broadcast equipment receives the task information, the broadcast equipment actively downloads audio files in the task and stores the audio files in a local memory, and the broadcast equipment actively starts to play an audio file list according to the arrival of the task play starting time; the broadcasting equipment performs time synchronization with the broadcasting system server through timing, so that timing broadcasting tasks among the broadcasting equipment are synchronously played, the broadcasting system server is deployed, other types of file servers are supported, such as an ftp file server, to be built, other types of file downloading protocols are supported, such as an ftp protocol, and the verification method of downloaded files supports the use of other HASH signatures instead of the MD5 values, such as SHA 1.
2. A timed broadcasting method of a digital broadcasting system as claimed in claim 1, wherein said timed broadcasting task is a precompiled timed task in the digital broadcasting system, comprising the following attributes: list of audio files, start of play time of the task, task repetition attribute, task volume, list of broadcast devices.
3. The timed broadcasting method of a digital broadcasting system according to claim 2, wherein the timed broadcasting task further includes a task priority attribute, and when a plurality of task broadcasting time periods overlap, a broadcasting task having a high priority is executed by the broadcasting device according to the received task priority.
4. A timing broadcasting device of a digital broadcasting system, comprising a broadcasting server and a broadcasting apparatus connected to the server, wherein the broadcasting server comprises: the server communication module is used for deploying a file server in a broadcasting system server, and the broadcasting system server sends timing broadcasting task information to the broadcasting equipment through an instruction channel between the broadcasting system server and the broadcasting equipment; the broadcasting apparatus includes: the downloading module is used for downloading files through the file server deployed in the broadcasting system server; the analysis module is used for analyzing the received timing broadcast task information to obtain corresponding information of the file to be downloaded; the file verification and filtering module is used for checking the local memory, performing consistency verification on the downloaded file, filtering the downloaded file data in all the file information to be downloaded, and downloading other files by the broadcasting equipment through the file server; and the broadcasting equipment time synchronization module is used for carrying out time synchronization with the broadcasting system server by using a network time protocol, the broadcasting equipment judges whether the playing start time is reached according to the timing broadcasting task, and if so, reads corresponding file contents according to a preset sequence, decodes and plays the corresponding file contents.
5. The timed broadcasting apparatus of a digital broadcasting system as claimed in claim 4, wherein said server communication module further comprises: the file server is an HTTP file server, performs communication of the broadcasting equipment through an HTTP protocol, and comprises a time-sharing system file manager and a virtual file system, wherein the time-sharing system file manager and the virtual file system provide a function of switching file classification index directories.
6. The timing broadcasting device of claim 5, wherein the file verifying and filtering module analyzes the received timing broadcasting task information to obtain the corresponding file information to be downloaded further comprises: the task information comprises a downloading link of the audio file and an MD5 value of the file, and the broadcasting equipment carries out consistency verification on the downloaded file through checking the MD5 value.
7. A timed broadcasting device of a digital broadcasting system as claimed in claim 6, characterized in that said timed broadcasting task comprises the following attributes: list of audio files, start of play time of the task, task repetition attribute, task volume, list of broadcast devices.
8. The timing broadcasting apparatus of a digital broadcasting system as claimed in claim 7, wherein the timing broadcasting task further includes a task priority attribute for executing a task having a high broadcasting priority according to the received task priority by the broadcasting device when a plurality of task broadcasting periods overlap.
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CN111462744B (en) * 2020-04-02 2024-01-30 深圳创维-Rgb电子有限公司 Voice interaction method and device, electronic equipment and storage medium
CN111865458A (en) * 2020-07-09 2020-10-30 合肥赛为智能有限公司 Subway broadcasting system timing playing method based on multi-instruction multi-cycle
CN112688750A (en) * 2020-12-09 2021-04-20 福建新大陆通信科技股份有限公司 Emergency broadcasting terminal timing broadcasting method
CN115459869B (en) * 2022-10-27 2023-07-04 广东保伦电子股份有限公司 Synchronous broadcasting method, broadcasting equipment and system based on FM (frequency modulation) transceiver module
CN116938372B (en) * 2023-07-25 2024-03-12 广东保伦电子股份有限公司 Method and device for rapidly configuring broadcast timing task based on time axis
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Denomination of invention: A timing broadcasting method and device for digital broadcasting system

Effective date of registration: 20221230

Granted publication date: 20220318

Pledgee: Agricultural Bank of China Limited Changsha Furong District Sub-branch

Pledgor: HUNAN COMTOM ELECTRONIC TECHNOLOGY CO.,LTD.

Registration number: Y2022980029886