WO2016000528A1 - 一种音频输出方法及设备 - Google Patents

一种音频输出方法及设备 Download PDF

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Publication number
WO2016000528A1
WO2016000528A1 PCT/CN2015/081643 CN2015081643W WO2016000528A1 WO 2016000528 A1 WO2016000528 A1 WO 2016000528A1 CN 2015081643 W CN2015081643 W CN 2015081643W WO 2016000528 A1 WO2016000528 A1 WO 2016000528A1
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Prior art keywords
audio data
audio
television device
remote device
television
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PCT/CN2015/081643
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English (en)
French (fr)
Inventor
彭卫
陈诚
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阿里巴巴集团控股有限公司
彭卫
陈诚
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Application filed by 阿里巴巴集团控股有限公司, 彭卫, 陈诚 filed Critical 阿里巴巴集团控股有限公司
Publication of WO2016000528A1 publication Critical patent/WO2016000528A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • 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]

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to an audio output method and device.
  • TV products are increasingly recognized and used by users.
  • the sound of the TV may affect the normal work or rest of others in the room.
  • the TV is usually muted or the TV volume is turned down, which affects the TV viewing experience to a certain extent.
  • the method adopted in the prior art generally outputs the sound of the television through the earphone. At this time, the sound played by the television is no longer outputted by external release, but is directly outputted to the ear of the user through the earphone, thereby avoiding influence on other people.
  • the above method has the following drawbacks: if an ordinary wired earphone is used, the user and the television are required to maintain a relatively close distance due to the limitation of the length of the earphone cable; if the Bluetooth earphone is used, the distance of the Bluetooth transmission can be increased. It is also very limited and requires that the television device must have a Bluetooth module that is compatible with the receiving device.
  • the embodiment of the invention provides an audio output method and device, which are used to solve the problem that the prior art cannot meet the output of television audio in a long-distance use scenario.
  • a television device includes a first audio output module, where the first audio output module is configured to output audio data currently played by the television device, where the television device includes: an audio output control module and a virtual Output module
  • An audio output control module configured to receive an audio transmission request from a remote device, and instruct the virtual output module to perform audio data collection and transmission according to the audio transmission request, otherwise indicating The audio output module outputs audio data currently played by the television device;
  • a virtual output module configured to collect audio data currently played by the television device, and transmit the collected audio data to the remote device through a network connection with the remote device, so that the remote device plays the Audio data.
  • the audio output control module is further configured to:
  • the television device further comprises:
  • a network service module configured to establish and maintain the network connection with the remote device
  • the audio output control module is further configured to:
  • the audio output control module is further configured to:
  • the audio output control module is specifically configured to:
  • the virtual output module is specifically configured to:
  • the virtual output module is configured to collect audio data currently played by the television device for a corresponding type of remote device, and pass the collected audio data to the corresponding type.
  • the network connection between the remote devices is transmitted to the corresponding type of remote device;
  • the audio output control module is specifically configured to:
  • Receiving an audio transmission request from the remote device determining a corresponding virtual output module according to the type of the remote device, and instructing the corresponding virtual output module to perform audio data collection and transmission according to the audio transmission request.
  • the virtual output module is further configured to:
  • the audio data is encoded prior to transmitting the collected audio data to the remote device via a network connection with the remote device.
  • the virtual output module is specifically configured to:
  • the audio data currently played by the television device is acquired by calling an audio output interface defined in the hardware abstraction layer HAL.
  • a remote device is provided by the embodiment of the present invention, and the remote device includes:
  • a requesting module configured to send an audio transmission request to the television device
  • a playback processing module configured to receive audio data from the television device through a network connection with the television device, and play the received audio data.
  • the request module is further configured to:
  • the request module is further configured to:
  • the audio transmission request is used to instruct the television device to transmit audio data to the remote device and/or other remote device.
  • An audio output method is applied to a television device, where the television device includes a first audio output module and a virtual output module, and the method includes:
  • the television device instructs the first audio output module to output audio data currently being played by the television device
  • the television device instructs the virtual output module to collect audio data currently played by the television device according to the audio transmission request, and transmit the collected audio data to the remote network through a network connection with the remote device. a device to cause the remote device to play the audio data.
  • the method further comprises:
  • the television device After receiving the mute request or the audio transmission request from the remote device, the television device stops outputting the audio data currently played by the television device.
  • the method further comprises:
  • the television device stops collecting and transmitting audio data after receiving a transmission termination request from the remote device or after detecting that the network connection is interrupted.
  • the method further comprises:
  • the television device outputs the currently played audio data after receiving the transmission termination request from the remote device.
  • the television device receives an audio transmission request from the remote device, including:
  • the television device transmits the collected audio data to the remote device through a network connection with the remote device, including:
  • the television device transmits the collected audio data to a corresponding remote device through a network connection with the plurality of remote devices.
  • the television device collects audio data currently being played by the television device, and transmits the collected audio data to the remote device through a network connection with the remote device, including:
  • the television device collects audio data currently played by the television device for a corresponding type of remote device, and transmits the collected audio data to the corresponding type of remote device through a network connection with the remote device of the corresponding type. .
  • the method further comprises:
  • the audio data is encoded prior to transmitting the collected audio data to the remote device via a network connection with the remote device.
  • the audio data currently output by the television device is collected, including:
  • the television device collects audio data currently played by the television device by calling an audio output interface defined in the hardware abstraction layer HAL.
  • the remote device sends an audio transmission request to the television device
  • the remote device receives audio data from the television device via a network connection with the television device and plays the received audio data.
  • the method further comprises:
  • the remote device sends a mute request to the television device to cause the television device to stop outputting the currently played audio data according to the mute request.
  • the method further comprises:
  • the remote device transmits a transmission termination request to the television device to cause the television device to stop transmitting audio data to the remote device through a network connection with the remote device.
  • the audio transmission request is used to instruct the television device to transmit audio data to the remote device and/or other remote device.
  • the virtual output module of the television device can collect the audio data currently output by the television device, and transmit the collected audio data to the remote device through a network connection with the remote device, so that the remote device plays the audio data.
  • the remote device can be a commonly used terminal device such as a smart phone or a tablet computer
  • the audio data can be transmitted only by establishing a network connection with the television device.
  • the Bluetooth module is not required to be built in the television device. And equipped with headphones, on the other hand, this program can support the transmission of TV audio in close-range scenes and long-distance scenes.
  • the present invention is capable of controlling the output of audio data of the television terminal by the remote device.
  • FIG. 1 is a schematic structural diagram of a television device and a remote device according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a television device according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of another television device according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a remote device according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of an audio output method implemented by a television device side according to an embodiment of the present invention
  • FIG. 6 is a flowchart of a method for outputting audio implemented by a remote device side according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram of an interface defined in a HAL according to an embodiment of the present invention.
  • a network architecture applicable to an embodiment of the present invention includes a television device 110 and a remote device 120.
  • the television device 110 and the remote device 120 are connected by a wireless network, for example, the television device 110 and the remote device 120 are connected to the wireless network access device.
  • the television device 110 may be a smart TV device developed based on a Linux or Android system; the remote device 120 may have one or more, and the remote device 120 may be a wireless communication device such as a smart phone or a tablet computer, for example, It is a smart phone terminal developed based on Android or IOS system; the wireless network access device may be a wireless router, such as a wireless router with WiFi function.
  • the television device 110 and the remote device 120 can access the same network access device and connect by means of a wireless local area network.
  • the embodiment of the invention is applicable to a scene in which a television device plays video data of a television program and the mobile terminal plays audio data of the television program.
  • the television device 110 may receive an audio transmission request from the remote device, collect audio data currently output by the television device according to the audio transmission request, and transmit the collected audio data to the network connection between the remote device and the remote device.
  • Remote device to enable the remote device to play audio data.
  • the remote device 120 can send an audio transmission request to the television device, and The audio data from the television device is received through a network connection with the television device, and the received audio data is played.
  • the module module related to the present invention may include a first audio output module 200, an audio output control module 210, and a virtual output module 220.
  • the first audio output module 200 is configured to output audio data currently played by the television device, and is a conventional module of the television device.
  • the audio output control module 210 is configured to instruct the virtual output module 220 to perform audio data collection and transmission according to the audio transmission request after receiving the audio transmission request from the remote device, and otherwise instruct the first audio output module to output the current playback of the television device. Audio data.
  • An audio transmission request can be sent and received between the television device and the remote device through a specific port.
  • an audio transmission request is transmitted and received between a television device and a remote device through a port having a port number of 1000.
  • the television device receives the audio transmission request sent by the remote device through the listening port 1000.
  • the virtual output module 220 is configured to collect audio data of a program currently being played by the television device according to the instruction of the audio output control module 210, and transmit the collected audio data to the remote device through a network connection with the remote device, so as to be remotely The device plays audio data. During the transmission of the audio data to the remote device by the virtual output module 220, the television device still keeps playing the video of the current program.
  • the virtual output module collects and samples the two-channel sampling format with a sampling rate of 48KHz, a sampling precision of 16Bit, and a total code rate of not more than 200Kbps according to the instruction of the audio output control module.
  • the audio data can be saved in the cache or saved as a file on the hard disk of the TV.
  • the audio output control module 210 is capable of receiving a mute request from the remote device in addition to receiving the audio transmission request, and then performing a mute operation according to the mute request, so that the audio currently played by the television device is output only to the remote device for playback. As another possible manner, the audio output control module 210 may also perform a mute operation after receiving an audio transmission request from the remote device.
  • the specific processing of performing the mute operation is: the audio output control module 210 instructs the first audio output module 200 to stop outputting the audio data currently being played by the television device.
  • the audio output control module 210 is also capable of receiving a transmission termination request from the remote device, and instructs the virtual output module 220 to stop the acquisition and transmission of the audio data according to the transmission termination request.
  • the audio output control module 210 performs an operation of canceling the mute after receiving the transmission termination request from the remote device. Similarly, the specific processing of performing the operation of canceling the mute is: the audio output control module 210 instructs the first audio output module 200 to output the audio data currently being played by the television device.
  • the audio output control module 210 may further encode the collected audio data to reduce transmission resource overhead before transmitting the collected audio data to the remote device through a network connection with the remote device.
  • the specific coding algorithm can be determined according to the actual application scenario. For example, when the network environment is poor and the sound quality is not high, the audio data can be encoded into MP3 or LPC (Linear Predictive Coding) format to compress the audio data. To reduce the transmission delay. Depending on the network environment or the user's demand for audio quality, different audio coding algorithms can be used to take into account the requirements of transmission delay and audio distortion rate.
  • an audio transmission request sent by a remote device can be used to instruct the television device to transmit audio data to the plurality of other remote devices in addition to indicating that the television device transmits audio data to the remote device.
  • the audio output control module After receiving the audio transmission request of one of the remote devices, the audio output control module instructs the virtual output module to collect and transmit the audio data according to the audio transmission request; the virtual output module collects the audio data currently played by the television device, and the collected audio is collected. Data is transmitted to the corresponding remote device through a network connection with multiple remote devices.
  • a plurality of virtual output modules may be disposed in the television device, and each virtual output module is configured to collect audio data currently played by the television device for the corresponding type of remote device, and collect the collected audio. Data is passed through a network connection to a remote device of the appropriate type Lose to the corresponding type of remote device.
  • two virtual output modules are disposed in the television device, which are a first virtual output module and a second virtual output module, respectively.
  • the remote device corresponding to the first virtual output module is connected to the television device by using a Transmission Control Protocol (TCP), and the remote device corresponding to the second virtual output module is configured by HTTP (Hypertext Transfer Protocol).
  • TCP Transmission Control Protocol
  • HTTP Hypertext Transfer Protocol
  • the text transfer protocol establishes a connection with the television device, and the two virtual output modules respectively package the audio data in different forms during transmission.
  • the first virtual output module and the second virtual output module may also adopt different acquisition modes to remote devices for different sound quality requirements.
  • the first virtual output module and the second virtual output module can set different sampling rates, sampling precisions, and code rates to obtain audio data of different sound qualities.
  • the first virtual output module collects in a sampling format with a sampling rate of 48 kHz, a sampling accuracy of 16 Bit, and a code rate of no more than 200 Kbps
  • the second virtual output module has a sampling rate of 96 kHz, a sampling accuracy of 32 Bit, and a code rate of no more than The 400Kbps sampling format is used for acquisition.
  • the audio output control module is configured to receive an audio transmission request from the remote device, determine a corresponding virtual output module according to the type of the remote device, and instruct the corresponding virtual output module to perform audio data collection and transmission according to the audio transmission request.
  • the audio transmission request includes identification information of the remote device type, and the audio output control module can determine the type of the remote device according to the identification information, and then determine the corresponding virtual output module according to the type of the remote device.
  • the receiving port of the audio transmission request may be used to determine the type of the remote device. For example, two remote devices establish a connection with a television device via TCP and HTTP, respectively, if the TCP protocol uses a port with a port number of 1000, and the HTTP protocol uses a port with a port number of 500.
  • the audio output control module can determine that the remote device transmitting the audio transmission request is a remote device using the TCP protocol.
  • the foregoing television device has the above-mentioned audio output control module 210 and virtual input.
  • a network service module 230 for establishing and maintaining a network connection with the remote device may also be included.
  • the network protocol used for the network connection between the television device and the remote device may be TCP, HTTP or RTSP (Real Time Streaming Protocol).
  • TCP Transmission Control Protocol
  • HTTP HyperText Transfer Protocol
  • RTSP Real Time Streaming Protocol
  • the network service module 230 is required to maintain the connection. It usually passes the heartbeat detection method.
  • the remote device can also send a heartbeat message to the television device through a network connection in a certain period.
  • the network service module of the television device periodically detects whether a heartbeat message is received. If the heartbeat message is not received within the set period, it may be Due to network interruption or remote device anomalies, such as shutdown.
  • the remote device periodically sends a heartbeat message to the television device in a period of 10s, and the television device periodically receives the heartbeat message. If the heartbeat message is not received within a certain period, the television device determines the current The network connection is broken. Of course, in order to improve the redundancy of the interrupt detection, it can be determined that the heartbeat message is not received after N cycles, and then the connection interruption is determined to prevent some short-term network abnormalities that do not affect the audio transmission. False positives.
  • the audio output control module 210 instructs the virtual output module 220 to stop transmitting audio data to the remote device through a network connection with the remote device.
  • the television device when the television device is in the mute state, if the virtual output module 220 of the television device stops transmitting audio data to all remote devices (either because the audio output control module receives the transmission termination request, or the network service module detects the network connection interruption) ), the operation of unmute is performed to enable the television device to play audio normally.
  • the actual function of the virtual output module in the television device is to virtualize an audio output device.
  • the virtual output module can call an audio output interface defined in a HAL (Hardware Abstraction Layer) Acquisition of audio data.
  • HAL Hardware Abstraction Layer
  • the HAL defines some basic interfaces that interact with the hardware, and these interfaces can realize data interaction with the hardware after being called by the system. Similarly, this embodiment also needs to define an interface for audio output in the HAL, thereby implementing writing audio data into the buffer through the audio output interface.
  • the following interface needs to be defined in the HAL.
  • the currently played audio data output can be written to the cache.
  • the virtual output module can then send the audio data to the remote device over the established network connection.
  • the virtual audio output device is loaded when the television device loads the hardware device during startup.
  • the loading and registration process of the virtual audio output device when the television device is started is specifically:
  • the defined interface is compiled into a dynamic link library file RemoteVirtualAudio.so loaded into the system of the television device, the virtual audio output device is registered in the audio device management module of the system and the dynamic link is loaded.
  • the library file can be used to implement the registration process of the virtual audio output device.
  • a remote device includes a request module 410 and a play processing module 420.
  • the requesting module 410 is configured to send an audio transmission request to the television device
  • the play processing module 420 is configured to receive audio data from the television device through a network connection with the television device, and play the received audio data.
  • the audio transmission request can be generated by an application installed on the remote device.
  • the remote device is a smart phone using an IOS system, and if the remote device needs to perform audio output of the television device, the application can be opened. The corresponding operation is performed, and the transmission of the audio transmission request is completed by the application calling the related function.
  • the audio transmission request can also instruct the television device to transmit audio data to other remote devices themselves.
  • the requesting module may also send a mute request and a transmission termination request to the television device for respectively causing the television device to perform a mute operation and stop transmitting the audio data to the remote device through a network connection with the remote device.
  • the remote device can be a mobile terminal such as a mobile phone or a tablet computer, it can be carried around the user to play the sound through the wired earphone.
  • the audio output method is also provided in the embodiment of the present application.
  • the device corresponding to the method is the television device and the remote device provided in the embodiment of the present application, and the method for solving the problem is similar to the system.
  • the implementation of the method can be referred to the implementation of the corresponding device in the system. The repetitions are not repeated here.
  • an embodiment of the present invention provides an audio output method implemented on a television device side, which is applied to a television device, where the television device includes a first audio output module and a virtual output module. If the television device does not currently receive any audio transmission request from the remote device, the audio data currently being played by the television device is output through the first audio output.
  • the method includes:
  • Step 501 The television device receives an audio transmission request from a remote device.
  • Step 502 The television device instructs the virtual output module to collect the audio data currently played by the television device according to the audio transmission request, and transmits the collected audio data to the remote device through a network connection with the remote device, so that the remote device plays the audio data.
  • the television device performs a mute operation after receiving a mute request or an audio transmission request from the remote device, thereby preventing other people in the room from being disturbed.
  • the specific processing procedure for performing the mute operation is that the television device transmits only the audio data to the remote device, and stops outputting the currently played audio data through the television device itself.
  • the television device stops transmitting audio data to the remote device through a network connection with the remote device after receiving the transmission termination request from the remote device or after detecting the interruption of the network connection.
  • the operation of canceling the mute is performed, that is, the output of the currently played audio data is resumed.
  • the television device receives an audio transmission request from the remote device, including:
  • the television device receives an audio transmission request from the first remote device; wherein the audio transmission request is used to instruct the television device to transmit audio data to the plurality of remote devices;
  • the television device transmits the collected audio data to the remote device through a network connection with the remote device, including:
  • the television device transmits the collected audio data to a corresponding remote device through a network connection with a plurality of remote devices.
  • the television device collects the audio data currently played by the television device, and transmits the collected audio data to the remote device through a network connection with the remote device, including:
  • the television device collects audio data currently played by the television device for the corresponding type of remote device, and transmits the collected audio data to a corresponding type of remote device through a network connection with a corresponding type of remote device.
  • the audio data currently output by the television device is collected, including:
  • the television device collects the current audio data of the television device by calling an audio output interface defined in the hardware abstraction layer HAL.
  • the television device encodes the audio data before transmitting the collected audio data to the remote device through a network connection with the remote device.
  • an embodiment of the present invention provides an audio output method implemented on a remote device side, where the method includes:
  • Step 601 The remote device sends an audio transmission request to the television device.
  • Step 602 The remote device receives audio data from the television device through a network connection with the television device, and plays the received audio data.
  • the remote device can send a mute request to the television device to cause the television device to perform a mute operation in accordance with the mute request.
  • the specific processing procedure of performing the mute operation is: the television device transmits only the audio data to the remote device, and stops outputting the currently played audio data through the television device itself.
  • the remote device can send a transmission termination request to the television device to cause the television device to stop transmitting the audio data to the remote device through a network connection with the remote device.
  • the audio transmission request is for instructing the television device to transmit audio data to the remote device and/or other remote device.
  • the television device collects the audio data currently output by the television device by using the virtual output module in the television device according to the audio transmission request, and passes the collected audio data to and from the remote device.
  • the network connection between the devices is transmitted to the remote device to enable the remote device to play audio data.
  • the remote device can be a commonly used terminal device such as a smart phone or a tablet computer.
  • the audio data can be transmitted only by establishing a network connection with the television device.
  • the solution can support the close scene and Transmission of TV audio in long-distance scenes.
  • the present invention is capable of controlling the output of audio data of the television terminal by the remote device.
  • the remote device may further control the television device end, for example, sending a mute request to the television device to request to control the television to perform mute, or send the audio to the television device.
  • the data is transmitted to other remote devices for the request so that the television device can send audio data to multiple remote devices.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can 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, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

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Abstract

本发明涉及无线通信技术领域，特别涉及一种音频输出方法及设备，用以解决现有技术中在长距离使用场景下设备成本较高的问题。本发明实施例中，电视设备接收来自远程设备的音频传输请求后，并根据音频传输请求，由电视设备中的虚拟输出模块采集电视设备当前输出的音频数据，并将采集到的音频数据通过与远程设备间的网络连接传输给远程设备，以使远程设备播放音频数据。远程设备可以是智能手机、平板电脑等常用的终端设备，仅需要与电视设备之间建立网络连接即可实现音频数据的传输，且无需在电视设备内置蓝牙模块，因此实现成本较低。

Description

一种音频输出方法及设备 技术领域
本发明涉及无线通信技术领域，特别涉及一种音频输出方法及设备。
背景技术
随着电视技术的不断发展，电视产品越来越受到广大用户的认可和使用。但在某些情况下，电视播放的声音可能会影响房间内其他人的正常工作或休息。为了不影响其他人，通常会将电视调成静音状态或将电视音量调小，这在一定程度上影响到电视节目收看的体验。
为了解决上述问题，现有技术中所采用的方式一般是通过耳机来输出电视的声音。此时，电视机播放的声音不再通过外放的方式输出，而是通过耳机直接输出到使用者的耳中，由此可以避免对其他人造成影响。
但是上述方式存在以下缺陷：若使用普通的有线耳机，由于受到耳机线长度的限制，要求使用者和电视机保持较近的距离；若使用蓝牙耳机，虽然可以增加使用距离，但是蓝牙传输的距离也非常有限，并且要求电视设备必须具备与接收端设备适配的蓝牙模块。
发明内容
本发明实施例提供一种音频输出方法及设备，用以解决现有技术不能满足长距离使用场景下输出电视音频的问题。
本发明实施例提供的一种电视设备，包括第一音频输出模块，所述第一音频输出模块用于输出所述电视设备当前播放的音频数据，所述电视设备包括：音频输出控制模块和虚拟输出模块；
音频输出控制模块，用于在接收来自远程设备的音频传输请求，根据所述音频传输请求，指示所述虚拟输出模块进行音频数据的采集和传输，否则指示 所述音频输出模块输出电视设备当前播放的音频数据；
虚拟输出模块，用于采集所述电视设备当前播放的音频数据，并将采集到的音频数据通过与所述远程设备间的网络连接传输给所述远程设备，以使所述远程设备播放所述音频数据。
较佳地，所述音频输出控制模块，还用于：
在接收到来自于所述远程设备的静音请求或者所述音频传输请求后，指示所述第一音频输出模块停止输出所述电视设备当前播放的音频数据。
较佳地，该电视设备还包括：
网络服务模块，用于建立并维护与所述远程设备间的所述网络连接；
所述音频输出控制模块，还用于：
在接收到来自所述远程设备的传输终止请求后，或者在所述网络服务模块检测到所述网络连接中断后，指示所述虚拟输出模块停止进行音频数据的采集和传输。
较佳地，所述音频输出控制模块，还用于：
在指示所述虚拟输出模块停止音频数据的传输后，指示所述第一音频输出模块输出所述电视设备当前播放的音频数据。
较佳地，所述音频输出控制模块，具体用于：
接收来自第一远程设备的音频传输请求，根据所述音频传输请求，指示所述虚拟输出模块进行音频数据的采集和传输；其中，所述音频传输请求用于指示所述电视设备向多个远程设备传输音频数据；
所述虚拟输出模块，具体用于：
采集所述电视设备当前播放的音频数据，将采集到的音频数据通过与所述多个远程设备间的网络连接传输给对应的远程设备。
较佳地，所述虚拟输出模块为多个，每个虚拟输出模块用于针对相应类型的远程设备采集所述电视设备当前播放的音频数据，并将采集到的音频数据通过与所述相应类型的远程设备间的网络连接传输给所述相应类型的远程设备；
所述音频输出控制模块，具体用于：
接收来自远程设备的音频传输请求，根据所述远程设备的类型确定对应的虚拟输出模块，根据所述音频传输请求，指示对应的虚拟输出模块进行音频数据的采集和传输。
较佳地，所述虚拟输出模块，还用于：
在将采集到的音频数据通过与所述远程设备间的网络连接传输给所述远程设备之前，对所述音频数据进行编码。
较佳地，所述虚拟输出模块具体用于：
通过调用硬件抽象层HAL中定义的音频输出接口，采集所述电视设备当前播放的音频数据。
本发明实施例提供的一种远程设备，该远程设备包括：
请求模块，用于向电视设备发送音频传输请求；
播放处理模块，用于通过与所述电视设备间的网络连接接收来自所述电视设备的音频数据，并播放接收到的音频数据。
较佳地，所述请求模块，还用于：
向所述电视设备发送静音请求，以使所述电视设备根据所述静音请求停止输出当前播放的音频数据。
较佳地，所述请求模块，还用于：
向所述电视设备发送传输终止请求，以使所述电视设备停止将音频数据通过与所述远程设备间的网络连接传输给所述远程设备。
较佳地，所述音频传输请求用于指示电视设备向所述远程设备和/或其它远程设备传输音频数据。
本发明实施例提供的一种音频输出方法，应用于电视设备中，所述电视设备包括第一音频输出模块以及虚拟输出模块，该方法包括：
电视设备指示所述第一音频输出模块输出所述电视设备当前播放的音频数据；
若接收来自远程设备的音频传输请求，
所述电视设备根据所述音频传输请求，指示所述虚拟输出模块采集所述电视设备当前播放的音频数据，并将采集到的音频数据通过与所述远程设备间的网络连接传输给所述远程设备，以使所述远程设备播放所述音频数据。
较佳地，该方法还包括：
所述电视设备在接收到来自于所述远程设备的静音请求或者所述音频传输请求后，停止输出所述电视设备当前播放的音频数据。
较佳地，该方法还包括：
所述电视设备在接收到来自所述远程设备的传输终止请求后，或者在检测到所述网络连接中断后，停止进行音频数据的采集和传输。
较佳地，该方法还包括：
所述电视设备在接收到来自所述远程设备的传输终止请求后，输出当前播放的音频数据。
较佳地，电视设备接收来自远程设备的音频传输请求，包括：
所述电视设备接收来自第一远程设备的音频传输请求；其中，所述音频传输请求用于指示所述电视设备向多个远程设备传输音频数据；
电视设备将采集到的音频数据通过与所述远程设备间的网络连接传输给所述远程设备，包括：
所述电视设备将采集到的音频数据通过与所述多个远程设备间的网络连接传输给对应的远程设备。
较佳地，所述电视设备采集所述电视设备当前播放的音频数据，并将采集到的音频数据通过与所述远程设备间的网络连接传输给所述远程设备，包括：
所述电视设备针对相应类型的远程设备采集所述电视设备当前播放的音频数据，并将采集到的音频数据通过与所述相应类型的远程设备间的网络连接传输给所述相应类型的远程设备。
较佳地，该方法还包括：
在将采集到的音频数据通过与所述远程设备间的网络连接传输给所述远程设备之前，对所述音频数据进行编码。
较佳地，采集所述电视设备当前输出的音频数据，包括：
所述电视设备通过调用硬件抽象层HAL中定义的音频输出接口，采集所述电视设备当前播放的音频数据。
本发明实施例提供的另一种音频输出方法，该方法包括：
远程设备向电视设备发送音频传输请求；
所述远程设备通过与所述电视设备间的网络连接接收来自所述电视设备的音频数据，并播放接收到的音频数据。
较佳地，该方法还包括：
所述远程设备向所述电视设备发送静音请求，以使所述电视设备根据所述静音请求停止输出当前播放的音频数据。
较佳地，该方法还包括：
所述远程设备向所述电视设备发送传输终止请求，以使所述电视设备停止将音频数据通过与所述远程设备间的网络连接传输给所述远程设备。
较佳地，所述音频传输请求用于指示电视设备向所述远程设备和/或其它远程设备传输音频数据。
本发明实施例中电视设备的虚拟输出模块能够采集电视设备当前输出的音频数据，并将采集到的音频数据通过与远程设备间的网络连接传输给远程设备，以使远程设备播放音频数据。由于远程设备可以是智能手机、平板电脑等常用的终端设备，仅需要与电视设备之间建立网络连接即可实现音频数据的传输，与现有技术相比，一方面无需在电视设备内置蓝牙模块以及配备耳机，另一方面，本方案能够支持近距离场景以及远距离场景下电视音频的传输。进一步地，本发明通过远程设备能够控制电视端音频数据的输出。
附图说明
图1为本发明实施例提供的一种电视设备与远程设备的构架图；
图2为本发明实施例提供的一种电视设备的结构示意图；
图3为本发明实施例提供的另一种电视设备的结构示意图；
图4为本发明实施例提供的一种远程设备的结构示意图；
图5为本发明实施例提供的一种电视设备侧实现的音频输出方法的流程图；
图6为本发明实施例提供的一种远程设备侧实现的音频输出方法的流程图；
图7为本发明实施例HAL中定义的接口示意图。
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明作进一步地详细描述，显然，所描述的实施例仅仅是本发明一部份实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
如图1所示，本发明实施例适用的网络架构，包括电视设备110以及远程设备120。电视设备110与远程设备120之间通过无线网络方式连接，比如电视设备110与远程设备120连接于无线网络接入设备。在一种应用场景中，电视设备110可以是基于Linux或Android系统开发的智能电视设备；远程设备120可以有一个或多个，远程设备120可以是智能手机、平板电脑等无线通信设备，比如可以是基于Android或IOS系统开发的智能手机终端；无线网络接入设备可以是无线路由器，比如可以是具备WiFi功能的无线路由器。电视设备110和远程设备120可以接入到同一网络接入设备，采用无线局域网的方式进行连接。
本发明实施例适用于电视机设备播放电视节目的视频数据、移动终端播放电视节目的音频数据的场景。在本发明实施例中,电视设备110可以接收来自远程设备的音频传输请求,根据音频传输请求采集电视设备当前输出的音频数据，并将采集到的音频数据通过与远程设备间的网络连接传输给远程设备，以使远程设备播放音频数据。远程设备120可以向电视设备发送音频传输请求，以及 通过与电视设备间的网络连接接收来自电视设备的音频数据，并播放接收到的音频数据。
如图2所示，本发明实施例提供的一种电视设备。图中仅示出了与本发明实施例相关的功能模块，电视设备中未涉及相关功能的常规模块未在图中一一列出。该电视设备中，与本发明相关的模块模块可包括第一音频输出模块200、音频输出控制模块210和虚拟输出模块220。
第一音频输出模块200，用于输出电视设备当前播放的音频数据，是电视设备的一个常规模块。
音频输出控制模块210，用于在接收来自远程设备的音频传输请求后，根据音频传输请求，指示虚拟输出模块220进行音频数据的采集和传输，否则指示第一音频输出模块输出电视设备当前播放的音频数据。
电视设备和远程设备之间可通过特定的端口发送和接收音频传输请求。例如，电视设备和远程设备之间通过端口号为1000的端口进行音频传输请求的收发。电视设备通过监听端口1000，接收远程设备发送的音频传输请求。
虚拟输出模块220，用于根据音频输出控制模块210的指示，采集电视设备当前播放的节目的音频数据，并将采集到的音频数据通过与远程设备间的网络连接传输给远程设备，以使远程设备播放音频数据。电视设备通过虚拟输出模块220向远程设备传输音频数据的过程中，仍保持继续播放当前节目的视频。
以某一时刻正在播放的音频为例，虚拟输出模块根据音频输出控制模块的指示，以采样率为48KHz、采样精度为16Bit、总码率不超过200Kbps的双声道的采样格式进行采集，采样后的音频数据可以保存于缓存中，也可以以文件的形式保存于电视机的硬盘中。
音频输出控制模块210除了用于接收音频传输请求外，还能够接收来自远程设备的静音请求，然后根据静音请求执行静音操作，使得电视设备当前播放的音频仅输出给远程设备来播放。作为另一种可行的方式，音频输出控制模块210也可以在接收到来自远程设备的音频传输请求后，执行静音操作。
执行静音操作的具体处理过程为：音频输出控制模块210指示第一音频输出模块200停止输出电视设备当前播放的音频数据。
为了方便控制，音频输出控制模块210还能够接收到来自远程设备的传输终止请求，根据传输终止请求指示虚拟输出模块220停止进行音频数据的采集和传输。
进一步地，音频输出控制模块210在接收到来自远程设备的传输终止请求后执行取消静音的操作。类似地，执行取消静音的操作的具体处理过程为：音频输出控制模块210指示第一音频输出模块200输出电视设备当前播放的音频数据。
可选地，音频输出控制模块210在将采集到的音频数据通过与远程设备间的网络连接传输给远程设备之前，还可以对采集到的音频数据进行编码处理，以减少传输资源开销。具体采用的编码算法可以根据实际应用场景确定，例如网络环境较差且对音质要求不高时，可以将音频数据编码成MP3或者LPC(Linear Predictive Coding，线性预测编码)格式，对音频数据进行压缩，以降低传输延迟。根据网络环境或者用户对音频质量的需求的不同，可采用不同的音频编码算法，以兼顾传输时延的要求以及音频失真率的要求。
在实际应用中，某一个远程设备发送的音频传输请求除了能够用于指示电视设备向该远程设备传输音频数据之外，还能够指示电视设备向多个其它的远程设备传输音频数据。
音频输出控制模块在接收到其中一个远程设备的音频传输请求后，根据音频传输请求指示虚拟输出模块进行音频数据的采集和传输；虚拟输出模块采集电视设备当前播放的音频数据，将采集到的音频数据通过与多个远程设备间的网络连接传输给对应的远程设备。
较佳地，针对不同类型的远程设备，电视设备内可以设置多个虚拟输出模块，每个虚拟输出模块用于针对相应类型的远程设备采集电视设备当前播放的音频数据，并将采集到的音频数据通过与相应类型的远程设备间的网络连接传 输给相应类型的远程设备。
例如在电视设备内设置两个虚拟输出模块，分别为第一虚拟输出模块和第二虚拟输出模块。其中，第一虚拟输出模块对应的远程设备均是通过TCP(Transmission Control Protocol，传输控制协议)与电视设备建立连接，而第二虚拟输出模块对应的远程设备均是通过HTTP(Hypertext Transfer Protocol，超文本传输协议)与电视设备建立连接，两个虚拟输出模块在传输时分别采用不同的形式对音频数据进行封装。
可选地，第一虚拟输出模块和第二虚拟输出模块也可以采用不同采集方式，以针对不同音质要求的远程设备。在音频数据采集时，第一虚拟输出模块和第二虚拟输出模块可以设定不同的采样率、采样精度和码率，以获取不同音质的音频数据。例如，第一虚拟输出模块以采样率为48KHz、采样精度为16Bit、码率不超过200Kbps的采样格式进行采集，而第二虚拟输出模块以采样率为96KHz、采样精度为32Bit、码率不超过400Kbps的采样格式进行采集。
在上述场景中，音频输出控制模块用于接收来自远程设备的音频传输请求，根据远程设备的类型确定对应的虚拟输出模块，根据音频传输请求，指示对应的虚拟输出模块进行音频数据的采集和传输。例如，在音频传输请求中包含远程设备类型的标识信息，音频输出控制模块根据该标识信息即可确定远程设备的类型，然后根据远程设备的类型可以确定对应的虚拟输出模块。
除上述方式外，若不同类型的远程设备分别采用不同的协议与电视设备连接，若不同的协议会采用不同的端口发送音频传输请求，则可以音频传输请求的接收端口来确定远程设备的类型。例如，两个远程设备分别是通过TCP和HTTP与电视设备建立连接，若TCP协议使用端口号为1000的端口，而HTTP协议使用端口号为500的端口。电视设备在监听端口1000和500时，如果音频传输请求是通过端口1000接收到的，那么音频输出控制模块可以确定发送该音频传输请求的远程设备是采用TCP协议的远程设备。
可选地，如图3示，上述电视设备除上述音频输出控制模块210和虚拟输 出模块220之外，还可包括一个用于建立并维护与远程设备间的网络连接的网络服务模块230。
电视设备与远程设备之间的网络连接所采用的网络协议可以是TCP、HTTP或者RTSP(Real Time Streaming Protocol，实时流传输协议)等。以TCP为例，电视设备与每个远程设备之间建立一个独立的TCP长连接，通过该TCP长连接进行音频数据传输和请求收发。
为了保证连接的有效性，需要网络服务模块230对连接进行维护。一般会通过心跳检测的方式。由远程设备还能够通过网络连接以一定周期向电视设备发送心跳报文，电视设备的网络服务模块定时检测是否接收到心跳报文，若在设定周期内未接收到心跳报文，则可能是由于网络中断或者远程设备异常，如关机等。
例如，远程设备会以10s的周期定时向电视设备发送心跳报文，而电视设备则会定期接收该心跳报文，若在某一周期内未接收到心跳报文，则电视设备会判定当前的网络连接中断。当然，为了提高中断检测的冗余度，可以设定在N个周期未接收到心跳报文后，才判定玩过连接中断，以防止某些不会对音频传输造成影响的短时网络异常造成的误报。
当网络服务模块230检测到网络连接中断后，音频输出控制模块210会指示虚拟输出模块220停止将音频数据通过与远程设备间的网络连接传输给远程设备。
进一步地，当电视设备处于静音状态时，若电视设备的虚拟输出模块220停止向所有远程设备传输音频数据(无论是由于音频输出控制模块接收到传输终止请求，还是网络服务模块检测到网络连接中断)，会执行取消静音的操作，以使电视设备正常播放音频。
虚拟输出模块在电视设备内实际所起到的功能为虚拟出一个音频输出设备。对电视设备而言，会将其识别为一个实体模块。该虚拟输出模块能够调用HAL(Hardware Abstraction Layer，硬件抽象层)中定义的音频输出接口，进行 音频数据的采集。
如图7所示，以基于Android系统的智能电视设备为例，HAL定义了一些与硬件交互的基本接口，这些接口被系统调用后即可实现与硬件的数据交互。同理，本实施例也需要在HAL定义音频输出的接口，从而实现将音频数据通过音频输出接口写入到缓存中。
举例来说，本实施例中的需要在HAL中定义如下接口
Figure PCTCN2015081643-appb-000001
该接口被虚拟输出模块调用时，能够将当前播放的音频数据输出写入到缓存中。
然后虚拟输出模块即可通过已经建立的网络连接将该音频数据发送给远程设备。
电视设备在启动过程中加载硬件设备时，加载该虚拟音频输出设备。仍以基于Android系统的智能电视设备为例，该虚拟的音频输出设备在电视设备启动时的加载注册过程具体为：
在HAL中完成接口的定义后，将定义的接口编译成一个动态链接库文件RemoteVirtualAudio.so加载到电视设备的系统中，在系统的音频设备管理模块中注册虚拟的音频输出设备并加载该动态链接库文件即可实现虚拟的音频输出设备的加载注册过程。
如图4所示，本发明实施例提供的一种远程设备，包括请求模块410和播放处理模块420。
请求模块410，用于向电视设备发送音频传输请求；
播放处理模块420，用于通过与电视设备间的网络连接接收来自电视设备的音频数据，并播放接收到的音频数据。
在实际应用中，音频传输请求可以通过远程设备上安装的应用程序生成，例如远程设备是一台采用IOS系统的智能手机，若需要由该远程设备进行电视设备的音频输出，那么可以打开应用程序进行对应的操作，通过应用程序调用相关功能完成音频传输请求的发送。音频传输请求除了可以指示电视设备向该远程设备本身传输音频数据外，还能够指示电视设备向其它远程设备本身传输音频数据。
除音频传输请求外，请求模块还可以向电视设备发送静音请求和传输终止请求，分别用于使电视设备执行静音操作和停止将音频数据通过与远程设备间的网络连接传输给远程设备。
由于远程设备可以是手机、平板电脑等移动终端，可以携带在使用者身边通过有线耳机来播放声音。
基于同一发明构思，本申请实施例中还提供了音频输出方法，由于这些方法对应的设备是本申请实施例中提供的电视设备和远程设备，并且该方法解决问题的原理与系统相似，因此该方法的实施可以参见系统中对应的设备的实施， 重复之处不再赘述。
如图5所示，本发明实施例提供了一种电视设备侧实现的音频输出方法，应用于电视设备中，该电视设备包括第一音频输出模块以及虚拟输出模块。如果电视设备当前未接收任何来自远程设备的音频传输请求，则会通过第一音频输出输出电视设备当前播放的音频数据。当有远程设备向电视设备发送音频传输请求后，该方法包括：
步骤501，电视设备接收来自远程设备的音频传输请求；
步骤502，电视设备根据音频传输请求，指示虚拟输出模块采集电视设备当前播放的音频数据，并将采集到的音频数据通过与远程设备间的网络连接传输给远程设备，以使远程设备播放音频数据。
较佳地，电视设备在接收到来自于远程设备的静音请求或者音频传输请求后，执行静音操作，从而避免房间内的其他人受到打扰。执行静音操作的具体处理过程为：电视设备仅向远程设备传输音频数据，而停止通过电视设备自身来输出当前播放的音频数据。
较佳地，电视设备在接收到来自远程设备的传输终止请求后，或者在检测到网络连接中断后，停止通过与远程设备间的网络连接向远程设备传输音频数据。
较佳地，电视设备在停止通过与远程设备间的网络连接向远程设备传输音频数据之后，执行取消静音的操作，即恢复输出当前播放的音频数据。
较佳地，电视设备接收来自远程设备的音频传输请求，包括：
电视设备接收来自第一远程设备的音频传输请求；其中，音频传输请求用于指示电视设备向多个远程设备传输音频数据；
电视设备将采集到的音频数据通过与远程设备间的网络连接传输给远程设备，包括：
电视设备将采集到的音频数据通过与多个远程设备间的网络连接传输给对应的远程设备。
较佳地，电视设备采集电视设备当前播放的音频数据，并将采集到的音频数据通过与远程设备间的网络连接传输给远程设备，包括：
电视设备针对相应类型的远程设备采集电视设备当前播放的音频数据，并将采集到的音频数据通过与相应类型的远程设备间的网络连接传输给相应类型的远程设备。
较佳地，采集电视设备当前输出的音频数据，包括：
电视设备通过调用硬件抽象层HAL中定义的音频输出接口，采集电视设备当前的音频数据。
较佳地，在步骤502中，电视设备在将采集到的音频数据通过与远程设备间的网络连接传输给远程设备之前，对音频数据进行编码。
如图6所示，本发明实施例提供了一种远程设备侧实现的音频输出方法，该方法包括：
步骤601，远程设备向电视设备发送音频传输请求；
步骤602，远程设备通过与电视设备间的网络连接接收来自电视设备的音频数据，并播放接收到的音频数据。
较佳地，远程设备可向电视设备发送静音请求，以使电视设备根据静音请求执行静音操作。其中，执行静音操作的具体处理过程为：电视设备仅向远程设备传输音频数据，而停止通过电视设备自身来输出当前播放的音频数据。
较佳地，远程设备可向电视设备发送传输终止请求，以使电视设备停止将音频数据通过与远程设备间的网络连接传输给远程设备。
较佳地，音频传输请求用于指示电视设备向远程设备和/或其它远程设备传输音频数据。
本发明实施例中，电视设备接收来自远程设备的音频传输请求后，根据音频传输请求，由电视设备中的虚拟输出模块采集电视设备当前输出的音频数据，并将采集到的音频数据通过与远程设备间的网络连接传输给远程设备，以使远程设备播放音频数据。远程设备可以是智能手机、平板电脑等常用的终端设备， 仅需要与电视设备之间建立网络连接即可实现音频数据的传输，与现有技术相比，一方面无需在电视设备内置蓝牙模块以及配备耳机，另一方面，本方案能够支持近距离场景以及远距离场景下电视音频的传输。进一步地，本发明通过远程设备能够控制电视端音频数据的输出。
进一步地，根据本发明实施例，远程设备除了播放音频数据，还可以进一步对电视设备端进行控制，例如，向电视设备静音请求发送静音请求，以控制电视进行静音，或者向电视设备发送将音频数据传输给其他远程设备的请求，以使电视设备可以向多个远程设备发送音频数据。
本领域内的技术人员应明白，本发明的实施例可提供为方法、系统、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处 理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (24)

  1. 一种电视设备，包括第一音频输出模块，其特征在于，所述电视设备包括：音频输出控制模块和虚拟输出模块；
    音频输出控制模块，用于在接收来自远程设备的音频传输请求后，根据所述音频传输请求，指示所述虚拟输出模块进行音频数据的采集和传输，否则指示所述第一音频输出模块输出所述电视设备当前播放的音频数据；
    虚拟输出模块，用于采集所述电视设备当前播放的音频数据，并将采集到的音频数据通过与所述远程设备间的网络连接传输给所述远程设备，以使所述远程设备播放所述音频数据。
  2. 如权利要求1所述的电视设备，其特征在于，所述音频输出控制模块，还用于：
    在接收到来自于所述远程设备的静音请求或者所述音频传输请求后，指示所述第一音频输出模块停止输出所述电视设备当前播放的音频数据。
  3. 如权利要求1所述的电视设备，其特征在于，该电视设备还包括：
    网络服务模块，用于建立并维护与所述远程设备间的所述网络连接；
    所述音频输出控制模块，还用于：
    在接收到来自所述远程设备的传输终止请求后，或者在所述网络服务模块检测到所述网络连接中断后，指示所述虚拟输出模块停止进行音频数据的采集和传输。
  4. 如权利要求2所述的电视设备，其特征在于，所述音频输出控制模块，还用于：
    在接收到来自所述远程设备的传输终止请求后，指示所述第一音频输出模块输出所述电视设备当前播放的音频数据。
  5. 如权利要求1所述的电视设备，其特征在于，所述音频输出控制模块，具体用于：
    接收来自第一远程设备的音频传输请求，根据所述音频传输请求，指示所 述虚拟输出模块进行音频数据的采集和传输；其中，所述音频传输请求用于指示所述电视设备向多个远程设备传输音频数据；
    所述虚拟输出模块，具体用于：
    采集所述电视设备当前播放的音频数据，将采集到的音频数据通过与所述多个远程设备间的网络连接传输给对应的远程设备。
  6. 如权利要求1所述的电视设备，其特征在于，所述虚拟输出模块为多个，每个虚拟输出模块用于针对相应类型的远程设备采集所述电视设备当前播放的音频数据，并将采集到的音频数据通过与所述相应类型的远程设备间的网络连接传输给所述相应类型的远程设备；
    所述音频输出控制模块，具体用于：
    接收来自远程设备的音频传输请求，根据所述远程设备的类型确定对应的虚拟输出模块，根据所述音频传输请求，指示对应的虚拟输出模块进行音频数据的采集和传输。
  7. 如权利要求1所述的电视设备，其特征在于，所述虚拟输出模块，还用于：
    在将采集到的音频数据通过与所述远程设备间的网络连接传输给所述远程设备之前，对所述音频数据进行编码。
  8. 如权利要求1～7中任一项所述的电视设备，其特征在于，所述虚拟输出模块具体用于：
    通过调用硬件抽象层HAL中定义的音频输出接口，采集所述电视设备当前播放的音频数据。
  9. 一种远程设备，其特征在于，该远程设备包括：
    请求模块，用于向电视设备发送音频传输请求；
    播放处理模块，用于通过与所述电视设备间的网络连接接收来自所述电视设备的音频数据，并播放接收到的音频数据。
  10. 如权利要求9所述的远程设备，其特征在于，所述请求模块，还用于：
    向所述电视设备发送静音请求，以使所述电视设备根据所述静音请求停止输出当前播放的音频数据。
  11. 如权利要求9所述的远程设备，其特征在于，所述请求模块，还用于：
    向所述电视设备发送传输终止请求，以使所述电视设备停止将音频数据通过与所述远程设备间的网络连接传输给所述远程设备。
  12. 如权利要求9所述的远程设备，其特征在于，所述音频传输请求用于指示电视设备向所述远程设备和/或其它远程设备传输音频数据。
  13. 一种音频输出方法，其特征在于，应用于电视设备中，所述电视设备包括第一音频输出模块以及虚拟输出模块，该方法包括：
    电视设备指示所述第一音频输出模块输出所述电视设备当前播放的音频数据；
    若接收来自远程设备的音频传输请求，所述电视设备根据所述音频传输请求，指示所述虚拟输出模块采集所述电视设备当前播放的音频数据，并将采集到的音频数据通过与所述远程设备间的网络连接传输给所述远程设备，以使所述远程设备播放所述音频数据。
  14. 如权利要求13所述的方法，其特征在于，该方法还包括：
    所述电视设备在接收到来自于所述远程设备的静音请求或所述音频传输请求后，停止输出所述电视设备当前播放的音频数据。
  15. 如权利要求13所述的方法，其特征在于，该方法还包括：
    所述电视设备在接收到来自所述远程设备的传输终止请求后，或者在检测到所述网络连接中断后，停止进行音频数据的采集和传输。
  16. 如权利要求14所述的方法，其特征在于，该方法还包括：
    所述电视设备在在接收到来自所述远程设备的传输终止请求后，输出当前播放的音频数据。
  17. 如权利要求13所述的方法，其特征在于，电视设备接收来自远程设备的音频传输请求，包括：
    所述电视设备接收来自第一远程设备的音频传输请求；其中，所述音频传输请求用于指示所述电视设备向多个远程设备传输音频数据；
    电视设备将采集到的音频数据通过与所述远程设备间的网络连接传输给所述远程设备，包括：
    所述电视设备将采集到的音频数据通过与所述多个远程设备间的网络连接传输给对应的远程设备。
  18. 如权利要求13所述的方法，其特征在于，所述电视设备采集所述电视设备当前播放的音频数据，并将采集到的音频数据通过与所述远程设备间的网络连接传输给所述远程设备，包括：
    所述电视设备针对相应类型的远程设备采集所述电视设备当前播放的音频数据，并将采集到的音频数据通过与所述相应类型的远程设备间的网络连接传输给所述相应类型的远程设备。
  19. 如权利要求13所述的方法，其特征在于，该方法还包括：
    在将采集到的音频数据通过与所述远程设备间的网络连接传输给所述远程设备之前，对所述音频数据进行编码。
  20. 如权利要求13～19中任一项所述的方法，其特征在于，采集所述电视设备当前输出的音频数据，包括：
    所述电视设备通过调用硬件抽象层HAL中定义的音频输出接口，采集所述电视设备当前播放的音频数据。
  21. 一种音频输出方法，其特征在于，该方法包括：
    远程设备向电视设备发送音频传输请求；
    所述远程设备通过与所述电视设备间的网络连接接收来自所述电视设备的音频数据，并播放接收到的音频数据。
  22. 如权利要求21所述的方法，其特征在于，该方法还包括：
    所述远程设备向所述电视设备发送静音请求，以使所述电视设备根据所述静音请求停止输出当前播放的音频数据。
  23. 如权利要求21所述的方法，其特征在于，该方法还包括：
    所述远程设备向所述电视设备发送传输终止请求，以使所述电视设备停止将音频数据通过与所述远程设备间的网络连接传输给所述远程设备。
  24. 如权利要求21所述的方法，其特征在于，所述音频传输请求用于指示电视设备向所述远程设备和/或其它远程设备传输音频数据。
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