CN104363496A - Method for achieving multiple scenario application of audio system in network set top box - Google Patents
Method for achieving multiple scenario application of audio system in network set top box Download PDFInfo
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- CN104363496A CN104363496A CN201410586980.8A CN201410586980A CN104363496A CN 104363496 A CN104363496 A CN 104363496A CN 201410586980 A CN201410586980 A CN 201410586980A CN 104363496 A CN104363496 A CN 104363496A
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- top box
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
-
- 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
-
- 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
- H04N21/439—Processing of audio elementary streams
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Telephone Function (AREA)
Abstract
The invention discloses a method for achieving multiple scenario application of an audio system in a network set top box. The method for achieving the multiple scenario application of the audio system in the network set top box achieves the purpose of receiving an audio stream through a Bluetooth mode based on the A2DP (audio 2 device protocol), and therefore the network set top box is used as a Sink device to receive and play the audio steam of a Bluetooth device on the opposite side in real time. The method for achieving the multiple scenario application of the audio system in the network set top box can achieve the beneficial effects that a user can freely choose voice output modes of the network set top box under different application scenarios, and sends local audio files to the network set top box for playing through the Bluetooth mode, expands functions of the network set top box, and thereby converts the traditional set top box into a multimedia playing device complete in function, and can greatly improve user experience satisfaction.
Description
Technical field
The present invention relates to network machine top box business scope, particularly relate to a kind of method realizing the many scene application of audio system in network machine top box.
Background technology
In recent years, along with the fast development of network technology, the function of Set Top Box rises to a control terminal into on-line deta bases such as a large amount of film, multi-media events, news from a multifrequency tuner and decoder.Therefore, how striking machine top box function, improve quality, reduce production cost, optimize product structure, development interactive TV networks is had great importance.Existing network machine top box has the following disadvantages:
1, existing set-top-box system does not have audio frequency control module, uncontrollable audio stream output mode; Set-top-box system acquiescence is by voice output to HDMI (High Definition Multimedia Interface, HDMI (High Definition Multimedia Interface)), and user cannot select a sound output mode under different application scene;
2, existing set-top-box system supports A2DP (Advanced Audio Distribution Profile, Bluetooth audio frequency mode is reached an agreement on), allow user by bluetooth module transmission of audio stream, but bluetooth module can only send audio stream, cannot receive, limit Bluetooth technology application scenarios on the set-top box.
Two kinds of roles are defined: Source and Sink (source and meeting point) in A2DP.The equipment sending audio stream is source, and the equipment of audio reception stream is sink, and such as mobile phone is source, and bluetooth earphone is sink.The typical apply of A2DP is that the voice data of music player is sent to earphone or audio amplifier.A2DP is based upon AVDTP (Audio/Video Distribution Transport Protocol, audio distribution formula host-host protocol) basis on, AVDTP define link how to set up, connection establishment well after, voice data, after overcompression, just can have been received and dispatched.About audio coding, PCM (Pulse Code Modulation, pulse code modulation) code stream, needs very large bandwidth, i.e. poor efficiency but also take electricity, is not suitable for wireless transmission, after therefore needing compression coding, then transmits.A2DP requires that Source and Sink at least will support SBC (Low Complexity Subband Codec, low complex degree carries encoding and decoding) standard.
The technical problem to be solved in the present invention is: 1, meet user and to select a sound under different application scene the demand of output mode; 2, the application receiving bluetooth audio stream is on the set-top box realized.
Summary of the invention
Main purpose of the present invention is to provide a kind of method realizing the many scene application of audio system in network machine top box, can realize receiving bluetooth audio stream on the set-top box, can realize user selects different voice outputs according to demands of individuals under different scene simultaneously.The present invention realizes Bluetooth receptions audio stream based on A2DP, thus makes Set Top Box can as Sink equipment, and the audio stream of real-time reception the other side bluetooth is also play.
For achieving the above object, the implementation method of the many scene application of audio system in a kind of network machine top box that the present invention proposes, it comprises network machine top box and control system, user's bluetooth equipment, is provided with audio-frequency module and bluetooth module, comprises the following steps in described control system:
A, in network machine top box, increase audio-frequency module, in audio-frequency module, arrange audio output mode is bluetooth earphone or audio amplifier, wired earphone or audio amplifier, local loudspeaker, HDMI tetra-kinds of selectable modes;
B, the bluetooth service type increasing Set Top Box support in bluetooth module are Rendering (playing up) and Audio (audio frequency), and Set Top Box is identified as Bluetooth audio frequency receiving equipment by user's bluetooth equipment;
Bluetooth UUID (the Universally Unique Identifier that C, in systems in which increase Set Top Box support, general unique identifier) type is A2DP Sink, AVDTP SEP (Stream End Point is set, the end point of stream) type is Sink, increase the sample frequency of decoding SBC 44.1K and 48K supporting A2DP code requirement, set up A2DP and be connected after user's bluetooth equipment matches with Set Top Box;
The audio frequency routing policy of D, amendment Set Top Box, set-top-box system receives the notice that A2DP in step C successfully connects, and is exported by Audio conversion to local audio module;
The data call back function of E, increase Set Top Box bluetooth module AVDTP layer, by call back function, the Data Analysis received by L2CAP layer is SBC data, and then is decoded as pcm audio data;
F, be the packet of band PCM parameter by the pcm audio data encapsulation in step e, packet put into queue, is sent to APP (Application, application program) by Socket (socket);
After G, APP receive the packet of Socket transmission, resolve PCM parameter thus play.
Further, user's bluetooth equipment and Set Top Box described in step C are set up the process that A2DP is connected and are comprised
Following steps:
C1, Set Top Box bluetooth module are searched for by other bluetooth equipments;
C2, Set Top Box bluetooth module accept the pairing request of other bluetooth equipments;
C3, user's bluetooth equipment, after successful matching, judge whether counterpart device supports A2DP Sink function, if support, carry out the connection of A2DP.
C4, Set Top Box bluetooth module receive the A2DP connection request of the other side, after successful connection, send the notice of A2DP successful connection to upper strata.
Further, described in step e, the process of L2CAP layer reception data comprises the following steps:
The SBC deposit data that the other side's bluetooth transmits by E1, call back function is in queue;
E2, according to A2DP specification, decoding SBC data, obtain PCM data and data parameters;
E3, the PCM data obtained and data parameters are sent to upper strata;
PCM data are play according to PCM parameter in E4, upper strata.
Preferably, the parameter of PCM described in step F comprises frequency, channel, data length, PCM data.
In order to solve the problem that sound delivery exports to HDMI, the uncontrollable audio stream of user by conventional set-top box acquiescence, invention increases audio-frequency module, suitable voice output is switched according to different scene, user can according to the priority of set-top box audio system, select suitable audio frequency apparatus access Set Top Box, thus the beneficial effect that user can select the voice output pattern of Set Top Box under different application scene can be realized; The problem of bluetooth audio stream cannot be received in order to solve conventional set-top box, the present invention is based on A2DP and realize Bluetooth receptions audio stream, make Set Top Box can as Sink equipment, the audio stream of real-time reception the other side bluetooth is also play, thus can realize user local audio is sent to by bluetooth the beneficial effect that Set Top Box carries out playing.The present invention is expanded by the function of said method by Set Top Box, thus traditional Set Top Box is become multiple functional multimedia play equipment, greatly can improve the satisfaction of Consumer's Experience.
Feature of the present invention and advantage will be described in detail by reference to the accompanying drawings by embodiment.
Accompanying drawing explanation
Fig. 1 represents audio frequency control flow chart of the present invention;
Fig. 2 represents audio-frequency module schematic diagram of the present invention;
Fig. 3 represents the flow chart that the present invention is connected with user's bluetooth equipment;
Fig. 4 represents that the present invention receives the flow chart of data.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that tool described herein stops embodiment only in order to explain the present invention, be not intended to limit the present invention.
The implementation method of the many scene application of audio system in network machine top box of the present invention, hardware comprises network machine top box and user's bluetooth equipment, software kit includes network Set Top Box control system, the present invention increases audio-frequency module and bluetooth module in described control system, comprises the following steps:
A, in network machine top box, increase audio-frequency module, in audio-frequency module, arrange audio output mode is bluetooth earphone or audio amplifier, wired earphone or audio amplifier, local loudspeaker, HDMI tetra-kinds of selectable modes;
B, the bluetooth service type increasing Set Top Box support in bluetooth module are Rendering and Audio, and Set Top Box is identified as Bluetooth audio frequency receiving equipment by user's bluetooth equipment;
The bluetooth UUID type of C, increase Set Top Box support is in systems in which A2DP Sink, arranging AVDTP SEP type is Sink, increase the sample frequency of decoding SBC 44.1K and 48K supporting A2DP code requirement, set up A2DP and be connected after user's bluetooth equipment matches with Set Top Box;
The audio frequency routing policy of D, amendment Set Top Box, set-top-box system receives the notice that A2DP in step C successfully connects, and is exported by Audio conversion to local audio module;
The data call back function of E, increase Set Top Box bluetooth module AVDTP layer, by call back function, the Data Analysis received by L2CAP layer is SBC data, and then is decoded as pcm audio data;
F, be the packet of band PCM parameter by the pcm audio data encapsulation in step e, packet put into queue, is sent to APP by Socket;
After G, APP receive the packet of Socket transmission, resolve PCM parameter thus play.
As shown in Figure 1, user can select bluetooth earphone or audio amplifier, wired earphone or audio amplifier, local loudspeaker, several voice output pattern of HDMI as required in Set Top Box.
As shown in Figure 2, Audio stream (audio stream) is sent to L2CAP layer by Peer Device (terminal equipment), the data of AVDTP layer pass through call back function, the Data Analysis received by L2CAP layer is SBC data, and then be decoded as pcm audio data, be sent to APP layer, thus carry out speaker (broadcasting).
As shown in Figure 3, in figure, user terminal bluetooth module is Source equipment, and Set Top Box bluetooth module is Sink equipment.
In step C, user's bluetooth equipment and Set Top Box are set up the process that A2DP is connected and are comprised the following steps:
C1, Sink equipment is searched for by other bluetooth equipments;
C2, Sink equipment accepts the pairing request of other bluetooth equipments;
C3, Source equipment, after successful matching, judges whether counterpart device supports A2DP Sink function, if support, carries out the connection of A2DP.
C4, Sink equipment receives the A2DP connection request of the other side, after successful connection, sends the notice of A2DP successful connection to upper strata.
As shown in Figure 4, described in step e, the process of L2CAP layer reception data comprises the following steps:
The SBC deposit data that the other side's bluetooth transmits by E1, call back function is in queue;
E2, according to A2DP specification, decoding SBC data, obtain PCM data and data parameters;
E3, the PCM data obtained and data parameters are sent to upper strata;
PCM data are play according to PCM parameter in E4, upper strata.
Although describe embodiments of the present invention by reference to the accompanying drawings; but those skilled in the art can make various distortion or amendment within the scope of the appended claims; as long as be no more than the protection range described by claim of the present invention, all should within protection scope of the present invention.
Claims (4)
1. the implementation method of the many scene application of audio system in a network machine top box, it comprises network machine top box and control system, user's bluetooth equipment, it is characterized in that: be provided with audio-frequency module and bluetooth module in described control system, said method comprising the steps of:
A, in network machine top box, increase audio-frequency module, in audio-frequency module, arrange audio output mode is bluetooth earphone or audio amplifier, wired earphone or audio amplifier, local loudspeaker, HDMI tetra-kinds of selectable modes;
B, the bluetooth service type increasing Set Top Box support in bluetooth module are Rendering and Audio, and Set Top Box is identified as Bluetooth audio frequency receiving equipment by user's bluetooth equipment;
The bluetooth UUID type of C, increase Set Top Box support is in systems in which A2DP Sink, arranging AVDTP SEP type is Sink, increase the sample frequency of decoding SBC 44.1K and 48K supporting A2DP code requirement, set up A2DP and be connected after user's bluetooth equipment matches with Set Top Box;
The audio frequency routing policy of D, amendment Set Top Box, set-top-box system receives the notice that A2DP in step C successfully connects, and is exported by Audio conversion to local audio module;
The data call back function of E, increase Set Top Box bluetooth module AVDTP layer, by call back function, the Data Analysis received by L2CAP layer is SBC data, and then is decoded as pcm audio data;
F, be the packet of band PCM parameter by the pcm audio data encapsulation in step e, packet put into queue, is sent to APP by Socket;
After G, APP receive the packet of Socket transmission, resolve PCM parameter thus play.
2. the implementation method of audio system many scene application in a kind of network machine top box as claimed in claim 1, is characterized in that: user's bluetooth equipment and Set Top Box described in step C are set up the process that A2DP is connected and comprised the following steps:
C1, Set Top Box bluetooth module are searched for by other bluetooth equipments;
C2, Set Top Box bluetooth module accept the pairing request of other bluetooth equipments;
C3, user's bluetooth equipment, after successful matching, judge whether counterpart device supports A2DP Sink function, if support, carry out the connection of A2DP.
C4, Set Top Box bluetooth module receive the A2DP connection request of the other side, after successful connection, send the notice of A2DP successful connection to upper strata.
3. the implementation method of the many scene application of audio system in a kind of network machine top box as claimed in claim 1, is characterized in that: the process that L2CAP layer described in step e receives data comprises the following steps:
The SBC deposit data that the other side's bluetooth transmits by E1, call back function is in queue;
E2, according to A2DP specification, decoding SBC data, obtain PCM data and data parameters;
E3, the PCM data obtained and data parameters are sent to upper strata;
PCM data are play according to PCM parameter in E4, upper strata.
4. the implementation method of the many scene application of audio system in a kind of network machine top box as described in claim 1 or 3, is characterized in that: the parameter of PCM described in step F comprises frequency, channel, data length, PCM data.
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| CN109005406A (en) * | 2018-09-04 | 2018-12-14 | 珠海迈科智能科技股份有限公司 | A kind of method of subpackage control statistical measurement set-top box signal |
| CN109561344A (en) * | 2018-12-24 | 2019-04-02 | 湖南克拉视通科技有限公司 | A kind of switching method and switching device of set-top box audio output channel |
| CN112118492A (en) * | 2020-09-14 | 2020-12-22 | 深圳创维－Rgb电子有限公司 | Processing method and device for switching television image and sound modes through software |
| CN114302195A (en) * | 2021-01-14 | 2022-04-08 | 海信视像科技股份有限公司 | Display device, external device and play control method |
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| CN112118492A (en) * | 2020-09-14 | 2020-12-22 | 深圳创维－Rgb电子有限公司 | Processing method and device for switching television image and sound modes through software |
| CN114302195A (en) * | 2021-01-14 | 2022-04-08 | 海信视像科技股份有限公司 | Display device, external device and play control method |
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