WO2013159594A1 - 一种基于太赫兹无线通信的多媒体流传输方法及系统 - Google Patents

一种基于太赫兹无线通信的多媒体流传输方法及系统 Download PDF

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Publication number
WO2013159594A1
WO2013159594A1 PCT/CN2013/071995 CN2013071995W WO2013159594A1 WO 2013159594 A1 WO2013159594 A1 WO 2013159594A1 CN 2013071995 W CN2013071995 W CN 2013071995W WO 2013159594 A1 WO2013159594 A1 WO 2013159594A1
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Prior art keywords
terahertz
data packet
multimedia stream
media
multimedia
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PCT/CN2013/071995
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English (en)
French (fr)
Inventor
汪开龙
李香来
葛琦
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惠州Tcl移动通信有限公司
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Application filed by 惠州Tcl移动通信有限公司 filed Critical 惠州Tcl移动通信有限公司
Priority to US14/370,386 priority Critical patent/US20150020136A1/en
Priority to EP13781384.6A priority patent/EP2846481B1/en
Publication of WO2013159594A1 publication Critical patent/WO2013159594A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/90Non-optical transmission systems, e.g. transmission systems employing non-photonic corpuscular radiation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2383Channel coding or modulation of digital bit-stream, e.g. QPSK modulation

Definitions

  • the present invention relates to the field of information technology, and in particular, to a multimedia stream transmission method and system based on terahertz wireless communication.
  • Video sharing output from a multimedia device to an external screen is a widely used feature. For example, screen sharing between a mobile terminal and a television or projector.
  • a laptop/smartphone is generally connected through a VGA/HDMI/AV cable and a projector/display to transmit video signals.
  • the multimedia stream sharing transmission method based on wireless communication generally has a wireless frequency band concentrated in GHz, and the wireless transmission capability in the wireless frequency band is limited, which may sacrifice the quality of the multimedia stream and cause delay.
  • the present invention aims to provide a multimedia streaming method and system based on terahertz wireless communication, which aims to solve the problem that the existing multimedia streaming transmission sharing mode has limited image quality transmission capability and is not conducive to product structure optimization. Inconvenience to the user.
  • a multimedia stream transmission method based on terahertz wireless communication comprising the following steps:
  • the media providing device processes the multimedia stream into a data packet suitable for terahertz wireless signal transmission, and sends the data packet to the first terahertz transceiver by the first terahertz communication interface driver, the first terahertz
  • the transceiver broadcasts the data packet to the outside through a terahertz wireless signal;
  • the media receiving device receives the terahertz wireless signal broadcast by the second terahertz transceiver and acquires the data packet, and the second terahertz transceiver transmits the data packet to the second terahertz communication interface driver, and then the media The receiving device processes the data packet into a playable multimedia stream.
  • a multimedia stream transmission method based on terahertz wireless communication comprising the following steps:
  • the media providing device processes the multimedia stream into a data packet suitable for terahertz wireless signal transmission, and broadcasts the data packet to the outside through a terahertz wireless signal;
  • the media receiving device receives the data packet by using a terahertz wireless signal, and processes the data packet into a playable multimedia stream.
  • a multimedia streaming system based on terahertz wireless communication including:
  • a media providing device for processing the multimedia stream into a data packet suitable for terahertz wireless signal transmission, and broadcasting the data packet to the outside through a terahertz wireless signal;
  • a media receiving device configured to receive the data packet by a terahertz wireless signal, and process the data packet into a playable multimedia stream.
  • the invention is based on a multimedia streaming method and system for terahertz wireless communication.
  • the media providing device transmits the multimedia stream through the terahertz wireless signal, and the media receiving device receives the multimedia stream in real time, thereby realizing the real-time broadcast transmission of the multimedia stream.
  • the invention greatly improves the transmission rate and quality of the multimedia stream through the transmission mode of the terahertz wireless communication, and far exceeds the traditional limited transmission mode and the GHz frequency band wireless transmission mode in terms of picture quality.
  • FIG. 1 is a flow chart of a preferred embodiment of a multimedia streaming method based on terahertz wireless communication according to the present invention.
  • FIG. 2 is a flow chart of the media providing device broadcasting the multimedia stream to the multimedia streaming method based on the terahertz wireless communication shown in FIG.
  • FIG. 3 is a flow chart of a media receiving device receiving a multimedia stream in the multimedia streaming method based on terahertz wireless communication shown in FIG. 1.
  • FIG. 4 is a flow chart of a handshake phase in the multimedia streaming method based on terahertz wireless communication shown in FIG. 1.
  • FIG. 5 is a structural block diagram of a preferred embodiment of a multimedia streaming system based on terahertz wireless communication according to the present invention.
  • the present invention provides a multimedia stream transmission method and system based on terahertz wireless communication. To clarify and clarify the object, technical solution and effect of the present invention, the present invention will be further described in detail below. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
  • the invention is based on a multimedia streaming method for terahertz wireless communication, wherein a multimedia stream is provided by a media providing device, and the multimedia stream is processed into a data packet suitable for transmission by a terahertz wireless link, and the data packet is sent out.
  • the multimedia receiving device receives the data packet through the terahertz wireless communication signal and processes it into a playable multimedia stream, so that the multimedia stream can be played on various display devices.
  • FIG. 1 is a preferred embodiment of a multimedia streaming method based on terahertz wireless communication according to the present invention, which includes the following steps:
  • the media providing device processes the multimedia stream into a data packet suitable for terahertz wireless signal transmission, and broadcasts the data packet to the outside through a terahertz wireless signal;
  • the media providing device may be a smart phone, a notebook computer, a PDA or other terminal device capable of providing a multimedia stream, where the media providing device stores a multimedia stream that needs to be shared, and the multimedia stream may be an audio or video file.
  • the file format of the multimedia stream may be a common wmv, rm, rmvb, mpg, 3gp, mp4 or avi.
  • the media providing device needs to process the multimedia stream into a data packet suitable for terahertz wireless signal transmission before transmitting the multimedia stream to the media receiving device through the terahertz wireless signal, so that the terahertz wave can be used for transmission.
  • the media receiving device receives the data packet by using a terahertz wireless signal, and processes the data packet into a playable multimedia stream.
  • the media receiving device is preferably a terminal device having a large-screen display device to obtain a better viewing effect, such as a projector, a display, a television, or other terminal device capable of playing a multimedia stream.
  • the media providing device can receive the data packet sent by the media providing device through the terahertz wireless signal, and after receiving the data packet, the media providing device needs to process the data packet to be converted into a media receiving device.
  • the multimedia stream finally plays the multimedia stream in real time on the display device. Because terahertz wireless communication has large transmission capacity, rate block, and better directivity, this terahertz wireless communication-based multimedia stream sharing transmission method can realize smooth transmission of high-definition lossless images, and can bring users new multimedia. The experience of screen sharing between devices. Further, the multimedia stream can be played.
  • the data packets suitable for terahertz wireless signal transmission need to be processed in the above steps S1 and S2, and the specific processing procedure is as follows.
  • FIG. 2 is a specific process of the media providing device broadcasting the multimedia stream to the media in the embodiment, which includes the following steps:
  • the multimedia stream is encapsulated into a data packet suitable for terahertz wireless signal transmission by using a first terahertz communication protocol.
  • the media providing device needs to first decode and re-encode the multimedia stream.
  • the foregoing process is performed by using the first multimedia codec library in the media providing device.
  • the audio encoding algorithm ie, the container technology
  • the information header that characterizes the encoding format constitutes a container package.
  • the container is first
  • the header of the packet is parsed and the audio and video compressed data is obtained, and then the compressed data is decompressed into a multimedia stream.
  • the media providing device After decoding and re-encoding the multimedia stream in the first multimedia codec library, the media providing device encapsulates the decoded and re-encoded data into a terahertz wireless signal transmission through the first terahertz communication protocol stack. The data packet is then sent to the first terahertz communication interface driver.
  • the media providing device sends the data packet by the first terahertz communication interface driver to the first terahertz transceiver, and the first terahertz transceiver broadcasts the data packet to the outside through the terahertz wireless signal.
  • the first terahertz communication interface driver sends the data packet to the first terahertz transceiver, and after receiving the data packet, the first terahertz transceiver transmits the data packet to the media receiving device through the terahertz wireless signal, Down, the media receiving device is receiving the data packet.
  • FIG. 3 is a specific process of the media receiving device receiving the multimedia stream in the embodiment, which includes the following steps:
  • the media receiving device receives, by the second terahertz transceiver, a terahertz wireless signal broadcast sent by the first terahertz transceiver and acquires the data packet, and the second terahertz transceiver sends the data packet to the second terabyte.
  • Hertz communication interface driver ;
  • a second terahertz transceiver and a second terahertz communication interface driver are disposed in the media receiving device, and the second terahertz transceiver has the same structural principle as the first terahertz transceiver, and the second terahertz communication interface
  • the structure and principle of driving the first terahertz communication interface driver are also the same, except that it is the reverse of the process of data packets and multimedia streams.
  • the second terahertz transceiver After receiving the terahertz wireless signal broadcast sent by the first terahertz transceiver and acquiring the data packet, the second terahertz transceiver sends the data packet to the second terahertz communication interface driver, the second The terahertz communication interface driver will perform the next processing on the data packet.
  • the second terahertz communication interface driver reads the data packet, and after the read data packet is unpacked and corrected by the second terahertz communication protocol stack, the second multimedia codec library is The data packet is decoded and converted into a desired image frame;
  • the second terahertz communication interface driver in the media receiving device drives the data packet to be read; the second terahertz communication interface drives the read link data to be unpacked and corrected through the terahertz communication protocol stack. Error; the unpacked and error-corrected data is decoded by the second multimedia decoding library set in the media receiving device, and converted into a data frame;
  • the image frame is converted into a playable multimedia stream after being processed by the graphics engine and displayed, and the multimedia stream is played and displayed on the display device.
  • the media receiving device is further provided with a graphics engine and a display driver, and the graphics engine and the display driver process the image frame so that it can be normally displayed and played on the display device.
  • the graphics engine and the display driver process the image frame so that it can be normally displayed and played on the display device.
  • the image frame obtained by the graphics engine is trimmed and beautified by the graphics engine, and the display process of the display driver is used to display the multimedia stream on the media receiving device. Stable playback on the device.
  • the present invention further includes a handshake phase before the media providing device transmits the multimedia stream data to the media receiving device to perform the necessary search and verification steps before the transmission.
  • the main process of the handshake phase includes the following steps. :
  • the media receiving device searches for available media providing devices through a terahertz wireless link
  • the media receiving device receives an available response command sent by the media providing device.
  • the media receiving device sends an authentication code verification instruction to the media providing device.
  • the media receiving device receives the authentication code response command sent by the media providing device, and after the media receiving device and the media providing device successfully authenticate and verify, the user can enter the next data transmission phase.
  • the handshake phase has the function of protecting data transmission and identifying the transmission device.
  • the media receiving device needs to identify the available media providing device in advance, and after receiving the available response from the media providing device, perform the authentication code verification step. After the verification process of the handshake phase is completed and the authentication code for protecting the data transmission is established, the multimedia stream transmission process can be entered.
  • the data transmission phase mainly includes: the media providing device sends the multimedia stream information to the media receiving device by using the terahertz wireless signal, and after the media providing device receives the multimedia stream playable response sent by the media receiving device, the media providing device can transmit the media, that is, the media.
  • the providing device transmits the multimedia stream data to the media receiving device through the terahertz wireless signal.
  • the media receiving device may actively send an instruction to stop receiving the multimedia stream data, and after receiving the instruction, the media providing device answers the instruction and stops sending the multimedia stream data, and the data transmission ends.
  • the present invention also provides a multimedia streaming system based on terahertz wireless communication. As shown in FIG. 5, the system mainly includes:
  • a media providing device 100 configured to process the multimedia stream into a data packet suitable for terahertz wireless signal transmission, and broadcast the data packet to the outside through a terahertz wireless signal;
  • the media receiving device 200 is configured to receive the data packet by using a terahertz wireless signal and process the data packet into a playable multimedia stream.
  • the media providing device 100 includes three layers of functional units: a first functional unit 130, a second functional unit 120, and a third functional unit 110;
  • the first function unit 130 is a first application operation interface for user interaction operation;
  • the second function unit 120 includes a first terahertz communication interface driver, a first terahertz communication protocol stack, and a first multimedia codec library.
  • the first terahertz communication interface driver is configured to read the data packet
  • the first terahertz communication protocol stack is configured to encapsulate a multimedia stream into the data packet
  • the first multimedia codec library is used to The multimedia stream is decoded and re-encoded
  • the third functional unit 110 includes a first terahertz transceiver for transmitting and receiving data packets suitable for terahertz wireless signal transmission.
  • the working process of the media providing device 100 is: the user first application operation interface selects and transmits a multimedia stream that needs to be transmitted and shared, and the multimedia stream is sent to the first too after being decoded and re-encoded by the first multimedia codec library.
  • a Hertz protocol stack the first terahertz protocol stack encapsulating the multimedia stream into a data packet suitable for terahertz wireless signal transmission, the data packet being sent by the first terahertz communication interface to the first terahertz transceiver, The first terahertz transceiver broadcasts the data packet out through the terahertz wireless signal.
  • the media receiving device 200 includes three layers of functional units: a fourth functional unit 230, a fifth functional unit 220, and a sixth functional unit 210;
  • the fourth function unit 230 is a second application operation interface for user interaction operation;
  • the fifth function unit 220 includes a second terahertz communication interface driver, a second terahertz communication protocol stack, a second multimedia codec library, and a graphic An engine and a display driver, the second terahertz communication interface driver is configured to read the data packet, and the second terahertz communication protocol stack is configured to unpack and correct a data packet, the second multimedia
  • the body codec library is configured to decode and convert the data packet into a desired image frame, and the graphics engine and the display driver are respectively used to draw and process the image frame into a playable multimedia stream;
  • the sixth functional unit 210 includes A second terahertz transceiver and a display device, the second terahertz transceiver for transmitting and receiving data packets suitable for terahertz wireless signal transmission, the display device for playing a display multimedia stream.
  • the workflow of the media receiving device is: the second terahertz transceiver receives the data packet and is driven by the second terahertz communication interface, and the read data packet is unpacked by the second terahertz protocol stack. After error correction, it is sent to the second multimedia codec library for decoding and converted into a desired image frame, and the image frame is processed by the image engine and the display driver, and finally the multimedia stream is played on the display device.
  • the user can also adjust the playing process of the multimedia stream on the user operation interface, for example, adjusting the playing quality of the multimedia stream, or suspending or interrupting the playing process of the multimedia stream.
  • the media providing device is a smart phone, a notebook computer or a PDA; the media receiving device is a projector, a display or a television.
  • the user only needs to send the multimedia stream file on the media providing device to the media receiving device through the terahertz wireless signal, so that the video or audio file can be played in real time on the large screen on the media receiving device, thereby greatly improving the user experience. .
  • the number of the media providing devices is one, and the number of the media receiving devices is several. This has evolved into a broadcast-style streaming media.
  • the multimedia streaming method of the present invention allows a user to receive or listen to a video or audio file while receiving a data packet without waiting for the entire multimedia stream file to be transmitted to the media receiving device.
  • the invention is based on a multimedia streaming method and system for terahertz wireless communication.
  • the media providing device transmits the multimedia stream through the terahertz wireless signal, and the media receiving device receives the multimedia stream in real time, thereby realizing the real-time broadcast transmission of the multimedia stream.
  • the multimedia streaming rate can be up to 10 Gps or more, and even for the uncompressed transmission of 1080/24-bit true color, only 30% of the bandwidth is occupied. Its high-bandwidth, all-digital multimedia streaming mode is far superior to the current wired transmission mode and Ghz band wireless transmission mode in terms of picture quality.
  • the present invention does not need to be wired, and does not need to be opened in the outer casing of the device, which saves a certain space of the main board and avoids the use of the physical connector.
  • the invention eliminates the use of cables, and makes the user more convenient and more user-friendly.
  • the present invention can also form a broadcast streaming media transmission mode, and a media providing device can share a multimedia streaming picture to multiple media receiving devices without hardware improvement, which is not achievable by the conventional transmission method.

Abstract

本发明基于太赫兹无线通信的多媒体流传输方法及系统,由媒体提供设备通过太赫兹无线信号发送多媒体流,并由媒体接收设备实时接收多媒体流,从而实现了多媒体流的实时播放传输。本发明通过太赫兹无线通信的传输方式大大提高了多媒体流的传输速率和质量,提高了多媒体流的显示画质。

Description

一种基于太赫兹无线通信的多媒体流传输方法及系统 技术领域
本发明涉及信息技术领域,尤其涉及一种基于太赫兹无线通信的多媒体流传输方法及系统。
背景技术
多媒体设备向外部屏幕进行视频共享输出是一项应用广泛的功能, 例如在移动终端与电视、投影仪之间的屏幕共享。在传统的多媒体流共享传输方式中,一般为笔记本电脑/智能手机通过VGA/HDMI/AV的线缆和投影仪/显示器连接,以进行视频信号的传输。
但这些传统的共享传输方式存在以下缺陷:除了一些高端的HDMI接口外,VGA和AV的画质传输能力很有限;视频接口不利于产品外观结构的优化;线缆的使用也会给用户带来不便。而目前基于无线通信的多媒体流共享传输方式,无线频段一般集中在GHz,该无线频段内的无线传输能力有限,可能牺牲多媒体流的质量与并导致时延。
因此,现有技术还有待于改进和发展。
技术问题
鉴于上述现有技术的不足,本发明的目的在于提供一种基于太赫兹无线通信的多媒体流传输方法及系统,旨在解决现有多媒体流传输共享方式画质传输能力有限、不利于产品结构优化、给用户带来使用的不便问题。
技术解决方案
一种基于太赫兹无线通信的多媒体流传输方法,其中包括以下步骤:
S1、媒体提供设备将多媒体流处理为适于太赫兹无线信号传输的数据包,并将所述数据包由第一太赫兹通信接口驱动发送至第一太赫兹收发器,所述第一太赫兹收发器将所述数据包通过太赫兹无线信号向外广播;
S2、媒体接收设备由第二太赫兹收发器接收太赫兹无线信号广播并获取所述数据包,第二太赫兹收发器将所述数据包发送至第二太赫兹通信接口驱动,之后所述媒体接收设备将所述数据包处理为可播放的多媒体流。
一种基于太赫兹无线通信的多媒体流传输方法,其中包括以下步骤:
S1、媒体提供设备将多媒体流处理为适于太赫兹无线信号传输的数据包,并通过太赫兹无线信号将所述数据包向外广播;
S2、媒体接收设备通过太赫兹无线信号接收所述数据包,并将所述数据包处理为可播放的多媒体流。
一种基于太赫兹无线通信的多媒体流传输系统,其中包括:
媒体提供设备,用于将多媒体流处理为适于太赫兹无线信号传输的数据包,并通过太赫兹无线信号将所述数据包向外广播;
媒体接收设备,用于通过太赫兹无线信号接收所述数据包,并将所述数据包处理为可播放的多媒体流。
有益效果
本发明基于太赫兹无线通信的多媒体流传输方法及系统,由媒体提供设备通过太赫兹无线信号发送多媒体流,并由媒体接收设备实时接收多媒体流,从而实现了多媒体流的实时播放传输。本发明通过太赫兹无线通信的传输方式大大提高了多媒体流的传输速率和质量,在画质方面也远超传统的有限传输方式以及GHz频段无线传输方式。
附图说明
图1为本发明基于太赫兹无线通信的多媒体流传输方法较佳实施例的流程图。
图2为图1所示基于太赫兹无线通信的多媒体流传输方法中媒体提供设备向外广播多媒体流的流程图。
图3为图1所示基于太赫兹无线通信的多媒体流传输方法中媒体接收设备接收多媒体流的流程图。
图4为图1所示基于太赫兹无线通信的多媒体流传输方法中握手阶段的流程图。
图5为本发明基于太赫兹无线通信的多媒体流传输系统较佳实施例的结构框图。
本发明的最佳实施方式
本发明提供一种基于太赫兹无线通信的多媒体流传输方法及系统,为使本发明的目的、技术方案及效果更加清楚、明确,以下对本发明进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。
本发明基于太赫兹无线通信的多媒体流传输方法,由媒体提供设备提供多媒体流,并对多媒体流进行处理使之转换为适于太赫兹无线链路传输的数据包,再将该数据包发送出去;多媒体接收设备通过太赫兹无线通信信号接收数据包并将之处理为可播放的多媒体流,从而使多媒体流可在各种显示设备上进行播放。
如图1所示,图1为本发明基于太赫兹无线通信的多媒体流传输方法的一个较佳实施例,其包括以下步骤:
S1、媒体提供设备将多媒体流处理为适于太赫兹无线信号传输的数据包,并通过太赫兹无线信号将所述数据包向外广播;
本步骤中,媒体提供设备可以是智能手机、笔记本电脑、PDA或其他可提供多媒体流的终端设备,这些媒体提供设备中存储有需要共享传输的多媒体流,所述多媒体流可以是音频或视频文件,所述多媒体流的文件格式可以是常见的wmv、rm、rmvb、mpg、3gp、mp4或avi。所述媒体提供设备在将多媒体流向媒体接收设备通过太赫兹无线信号传输之前,需将多媒体流处理为适合于太赫兹无线信号传输的数据包,这样才能利用太赫兹波进行传输。
S2、媒体接收设备通过太赫兹无线信号接收所述数据包,并将所述数据包处理为可播放的多媒体流。
本步骤中,媒体接收设备优选为具有大屏幕显示设备的终端设备,以获得较好的观看效果,例如可以是投影仪、显示器、电视机或其他可播放多媒体流的终端设备。所述媒体提供设备可通过太赫兹无线信号接收媒体提供设备发送的数据包,在接收到所述数据包之后,媒体提供设备需对该数据包进行处理,使之转换为媒体接收设备可播放的多媒体流,最终在显示设备上实时播放所述多媒体流。因为太赫兹无线通信的传输容量大、速率块,并且方向性更好,所以这种基于太赫兹无线通信的多媒体流共享传输方法可实现高清无损图像的流畅传输,可带给用户全新的在多媒体设备之间屏幕共享的体验。进一步,可对所述多媒体流进行播放。
上述步骤S1中及S2中均需对适于太赫兹无线信号传输的数据包进行处理,其具体的处理过程请阅读下文。
如图2所示,图2为本实施例中媒体提供设备向外广播多媒体流的具体流程,其包括以下步骤:
S11、媒体提供设备通过第一多媒体编解码库将多媒体流解码、重编码后,将所述多媒体流经过第一太赫兹通信协议封装为适于太赫兹无线信号传输的数据包;
媒体提供设备需先对多媒体流进行解码和重编码,上述过程是通过媒体提供设备中的第一多媒体编解码库来完成的,以编码为例,处理过程为:先通过标准视频编码、音频编码算法(即容器技术)将多媒体流处理成音视频压缩数据,再加上表征编码格式的信息头即构成容器包,对于解码而言,则是与上述编码相应的过程,即先对容器包的信息头进行解析并获得音视频压缩数据,然后将压缩数据解压成多媒体流。在第一多媒体编解码库对所述多媒体流进行解码及重编码后,媒体提供设备会通过第一太赫兹通信协议栈将解码及重编码后的数据封装为适合于太赫兹无线信号传输的数据包,接着所述数据包被发送至第一太赫兹通信接口驱动。
S12、媒体提供设备将所述数据包由第一太赫兹通信接口驱动发送至第一太赫兹收发器,第一太赫兹收发器将所述数据包通过太赫兹无线信号向外广播。
第一太赫兹通信接口驱动将数据包发送至第一太赫兹收发器,第一太赫兹收发器在接收到数据包后,会通过太赫兹无线信号将所述数据包发送至媒体接收设备,接下来,媒体接收设备在接收所述数据包。
如图3所示,图3为本实施例中媒体接收设备接收多媒体流的具体流程,其包括以下步骤:
S21、媒体接收设备由第二太赫兹收发器接收由第一太赫兹收发器发送的太赫兹无线信号广播并获取所述数据包,第二太赫兹收发器将所述数据包发送至第二太赫兹通信接口驱动;
在媒体接收设备中设置有第二太赫兹收发器、第二太赫兹通信接口驱动,所述第二太赫兹收发器与第一太赫兹收发器的结构原理相同,所述第二太赫兹通信接口驱动与所述第一太赫兹通信接口驱动的结构及原理也相同,只是其对数据包以及多媒体流的过程相反。所述第二太赫兹收发器接收到第一太赫兹收发器发送的太赫兹无线信号广播并获取所述数据包后,会将该数据包发送至第二太赫兹通信接口驱动,所述第二太赫兹通信接口驱动会对该数据包进行接下来的处理。
S22、第二太赫兹通信接口驱动对所述数据包进行读取,读取后的数据包经过第二太赫兹通信协议栈的解包、纠错后,由第二多媒体编解码库对所述数据包进行解码并转换为所需的图像帧;
此步骤中,媒体接收设备中的第二太赫兹通信接口驱动读取所述数据包;所述第二太赫兹通信接口驱动读取到的链路数据通过太赫兹通信协议栈进行解包和纠错;解包和纠错后的数据通过设置在媒体接收设备中的第二多媒体解码库进行解码,并转换为数据帧;
S23、所述图像帧经图形引擎的绘制及显示驱动的处理后被转换成可播放的多媒体流,所述多媒体流在显示设备上播放显示。
媒体接收设备中还设置有图形引擎及显示驱动,该图形引擎和显示驱动会对图像帧进行处理,使之可在显示设备上正常显示及播放。在第二多媒体解码库对数据进行解码及转换后获得的图像帧,会通过图形引擎的修整及美化等绘制工作,以及通过显示驱动的显示处理,使多媒体流在媒体接收设备上的显示设备上进行稳定的播放。
本发明在媒体提供设备向媒体接收设备传输多媒体流数据之前还包括一握手阶段,以进行传输之前必要的搜索、验证等步骤,该握手阶段的主要过程,如图4所示,其包括以下步骤:
R1、媒体接收设备通过太赫兹无线链路搜索可用的媒体提供设备;
R2、媒体接收设备接收到媒体提供设备发出的可用应答命令;
R3、媒体接收设备向媒体提供设备发出鉴权码验证指令;
R4、媒体接收设备接收到媒体提供设备发出的鉴权码应答命令,在媒体接收设备及媒体提供设备成功鉴权验证后,即可进入接下来的数据传输阶段。
上述握手阶段具有保护数据传输以及识别传输设备的功能,媒体接收设备事先需识别出可用的媒体提供设备,在收到媒体提供设备发出的可用应答后,再进行鉴权码验证步骤。在握手阶段的验证过程完成并确立用于保护数据传输的鉴权码后,即可进入多媒体流的传输过程。
在握手阶段完成后,即进入数据传输阶段。数据传输阶段主要包括:媒体提供设备通过太赫兹无线信号向媒体接收设备发送多媒体流的信息,在媒体提供设备接收到媒体接收设备发出的该多媒体流可播放应答后,即可进行传输,即媒体提供设备通过太赫兹无线信号向媒体接收设备发送多媒体流数据。
当媒体接收设备不需要播放该多媒体流时,媒体接收设备可主动发出停止接收多媒体流数据的指令,媒体提供设备接收到该指令后,应答该指令,并停止发送多媒体流数据,数据传输结束。
本发明还提供一种基于太赫兹无线通信的多媒体流传输系统,如图5所示,该系统主要包括:
媒体提供设备100,用于将多媒体流处理为适于太赫兹无线信号传输的数据包,并通过太赫兹无线信号将所述数据包向外广播;
媒体接收设备200,用于通过太赫兹无线信号接收所述数据包,并将所述数据包处理为可播放的多媒体流。
所述媒体提供设备100包括三层功能单元:第一功能单元130、第二功能单元120及第三功能单元110;
第一功能单元130为用于用户交互操作的第一应用操作界面;第二功能单元120包括第一太赫兹通信接口驱动、第一太赫兹通信协议栈及第一多媒体编解码库,所述第一太赫兹通信接口驱动用于读取所述数据包,所述第一太赫兹通信协议栈用于将多媒体流封装为所述数据包,所述第一多媒体编解码库用于对多媒体流进行解码和重编码;第三功能单元110包括一第一太赫兹收发器,用于收发适于太赫兹无线信号传输的数据包。
媒体提供设备100的工作流程是:用户第一应用操作界面选择并传输需要传输分享的多媒体流,该多媒体流经过第一多媒体编解码库的解码及重编码后,被发送至第一太赫兹协议栈,第一太赫兹协议栈将所述多媒体流封装为适于太赫兹无线信号传输的数据包,所述数据包由第一太赫兹通信接口驱动发送至第一太赫兹收发器,通过第一太赫兹收发器将所述数据包通过太赫兹无线信号向外广播。
所述媒体接收设备200包括三层功能单元:第四功能单元230、第五功能单元220及第六功能单元210;
第四功能单元230为用于用户交互操作的第二应用操作界面;第五功能单元220包括第二太赫兹通信接口驱动、第二太赫兹通信协议栈、第二多媒体编解码库、图形引擎以及显示驱动,所述第二太赫兹通信接口驱动用于读取所述数据包,所述第二太赫兹通信协议栈用于对数据包进行解包和纠错,所述第二多媒体编解码库用于对数据包进行解码并转换为所需的图像帧,所述图形引擎及显示驱动分别用于对图像帧进行绘制及处理为可播放的多媒体流;第六功能单元210包括第二太赫兹收发器及显示设备,所述第二太赫兹收发器用于收发适于太赫兹无线信号传输的数据包,所述显示设备用于播放显示多媒体流。
媒体接收设备的工作流程是:第二太赫兹收发器接收所述数据包,并由第二太赫兹通信接口驱动进行读取,读取后的数据包经第二太赫兹协议栈的解包和纠错后,被发送至第二多媒体编解码库进行解码并转换为所需的图像帧,所述图像帧经过图像引擎的绘制以及显示驱动的处理,最终在显示设备上播放该多媒体流。当然,用户还可以在用户操作界面上调整该多媒体流的播放过程,例如对多媒体流的播放画质进行调整,或者暂停或中断多媒体流的播放过程。
所述媒体提供设备为智能手机、笔记本电脑或PDA;所述媒体接收设备为投影仪、显示器或电视机。用户只需将媒体提供设备上的多媒体流文件通过太赫兹无线信号发送至媒体接收设备,便可实现在媒体接收设备上的大屏幕上实时播放视频或音频文件,极大的提升了用户的体验。
所述媒体提供设备的数量为一台,所述媒体接收设备的数量为若干台。这样就演变成了广播式的流媒体。本发明中的多媒体流传输方式可让用户一边接收数据包、一边观看或收听视频或音频文件,而不需要等到整个多媒体流文件传输到媒体接收设备上。
本发明基于太赫兹无线通信的多媒体流传输方法及系统,由媒体提供设备通过太赫兹无线信号发送多媒体流,并由媒体接收设备实时接收多媒体流,从而实现了多媒体流的实时播放传输。本发明中,多媒体流传输速率可达10Gps以上,即使对于1080/24位真彩的无压缩传输也仅占用30%的带宽。其高带宽、全数字化的多媒体流传输方式在画质方面也远超目前的有线传输方式以及Ghz频段无线传输方式。并且,本发明无需进行有线连接,无需在设备的外壳开孔,节省了一定的主板空间,避免了物理连接器的使用。另外,本发明免去线缆的使用,使用户使用起来更加方便,更具人性化。甚至,本发明还可形成广播式的流媒体传输方式,一台媒体提供设备不需要硬件改进即可向多台媒体接收设备共享多媒体流画面,而这是传统的传输方式所达不到的。
应当理解的是,本发明的应用不限于上述的举例,对本领域普通技术人员来说,可以根据上述说明加以改进或变换,所有这些改进和变换都应属于本发明所附权利要求的保护范围。
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  1. 一种基于太赫兹无线通信的多媒体流传输方法,其中包括以下步骤:
    S1、媒体提供设备将多媒体流处理为适于太赫兹无线信号传输的数据包,并将所述数据包由第一太赫兹通信接口驱动发送至第一太赫兹收发器,所述第一太赫兹收发器将所述数据包通过太赫兹无线信号向外广播;
    S2、媒体接收设备由第二太赫兹收发器接收太赫兹无线信号广播并获取所述数据包,第二太赫兹收发器将所述数据包发送至第二太赫兹通信接口驱动,之后所述媒体接收设备将所述数据包处理为可播放的多媒体流。
  2. 根据权利要求1所述的基于太赫兹无线通信的多媒体流传输方法,其中所述步骤S1还包括:
    S11、媒体提供设备通过第一多媒体编解码库将多媒体流解码、重编码后,将所述多媒体流经过第一太赫兹通信协议封装为适于太赫兹无线信号传输的数据包。
  3. 根据权利要求1所述的基于太赫兹无线通信的多媒体流传输方法,其中所述步骤S2还包括:
    S22、所述第二太赫兹通信接口驱动对所述数据包进行读取,读取后的数据包经过第二太赫兹通信协议栈的解包、纠错后,由第二多媒体编解码库对所述数据包进行解码并转换为所需的图像帧;
    S23、所述图像帧经图形引擎的绘制及显示驱动的处理后被转换成可播放的多媒体流。
  4. 根据权利要求1所述的基于太赫兹无线通信的多媒体流传输方法,其中所述步骤S1之前还包括握手阶段,其包括以下步骤:
    R1、媒体接收设备通过太赫兹无线信号搜索可用的媒体提供设备;
    R2、媒体接收设备接收到媒体提供设备发出的可用应答指令;
    R3、媒体接收设备向媒体提供设备发出鉴权码验证指令;
    R4、媒体接收设备接收到媒体提供设备发出的鉴权码应答指令,并对所述鉴权码进行验证。
  5. 根据权利要求1所述的基于太赫兹无线通信的多媒体流传输方法,其中,所述媒体接收设备为具有屏幕显示设备的终端设备。
  6. 一种基于太赫兹无线通信的多媒体流传输方法,其中包括以下步骤:
    S1、媒体提供设备将多媒体流处理为适于太赫兹无线信号传输的数据包,并通过太赫兹无线信号将所述数据包向外广播;
    S2、媒体接收设备通过太赫兹无线信号接收所述数据包,并将所述数据包处理为可播放的多媒体流。
  7. 根据权利要求6所述的基于太赫兹无线通信的多媒体流传输方法,其中所述步骤S1具体包括:
    S11、媒体提供设备通过第一多媒体编解码库将多媒体流解码、重编码后,将所述多媒体流经过第一太赫兹通信协议封装为适于太赫兹无线信号传输的数据包;
    S12、媒体提供设备将所述数据包由第一太赫兹通信接口驱动发送至第一太赫兹收发器,第一太赫兹收发器将所述数据包通过太赫兹无线信号向外广播。
  8. 根据权利要求6所述的基于太赫兹无线通信的多媒体流传输方法,其中所述步骤S2具体包括:
    S21、媒体接收设备由第二太赫兹收发器接收太赫兹无线信号广播并获取所述数据包,第二太赫兹收发器将所述数据包发送至第二太赫兹通信接口驱动;
    S22、第二太赫兹通信接口驱动对所述数据包进行读取,读取后的数据包经过第二太赫兹通信协议栈的解包、纠错后,由第二多媒体编解码库对所述数据包进行解码并转换为所需的图像帧;
    S23、所述图像帧经图形引擎的绘制及显示驱动的处理后被转换成可播放的多媒体流。
  9. 根据权利要求6所述的基于太赫兹无线通信的多媒体流传输方法,其中所述步骤S1之前还包括握手阶段,其包括以下步骤:
    R1、媒体接收设备通过太赫兹无线信号搜索可用的媒体提供设备;
    R2、媒体接收设备接收到媒体提供设备发出的可用应答指令;
    R3、媒体接收设备向媒体提供设备发出鉴权码验证指令;
    R4、媒体接收设备接收到媒体提供设备发出的鉴权码应答指令,并对所述鉴权码进行验证。
  10. 根据权利要求6所述的基于太赫兹无线通信的多媒体流传输方法,其中所述媒体接收设备为具有屏幕显示设备的终端设备。
  11. 一种基于太赫兹无线通信的多媒体流传输系统,其中包括:
    媒体提供设备,用于将多媒体流处理为适于太赫兹无线信号传输的数据包,并通过太赫兹无线信号将所述数据包向外广播;
    媒体接收设备,用于通过太赫兹无线信号接收所述数据包,并将所述数据包处理为可播放的多媒体流。
  12. 根据权利要求11所述的基于太赫兹无线通信的多媒体流传输系统,其中所述媒体提供设备包括三层功能单元:第一功能单元、第二功能单元及第三功能单元;
    所述第一功能单元为用于用户交互操作的第一应用操作界面;
    所述第二功能单元包括第一太赫兹通信接口驱动、第一太赫兹通信协议栈及第一多媒体编解码库:所述第一太赫兹通信接口驱动用于读取所述数据包,所述第一太赫兹通信协议栈用于将多媒体流封装为所述数据包,所述第一多媒体编解码库用于对多媒体流进行解码和重编码;
    所述第三功能单元包括第一太赫兹收发器,用于收发适于太赫兹无线信号传输的数据包。
  13. 根据权利要求11所述的基于太赫兹无线通信的多媒体流传输系统,其中所述媒体接收设备包括三层功能单元:第四功能单元、第五功能单元及第六层功能单元;
    所述第四功能单元为用于用户交互操作的第二应用操作界面;
    所述第五功能单元包括第二太赫兹通信接口驱动、第二太赫兹通信协议栈、第二多媒体编解码库、图形引擎以及显示驱动:所述第二太赫兹通信接口驱动用于读取所述数据包,所述第二太赫兹通信协议栈用于对数据包进行解包和纠错,所述第二多媒体编解码库用于对数据包进行解码并转换为所需的图像帧,所述图形引擎及显示驱动分别用于对图像帧进行绘制及处理为可播放的多媒体流;
    所述第六功能单元包括第二太赫兹收发器及显示设备,所述第二太赫兹收发器用于收发适于太赫兹无线信号传输的数据包,所述显示设备用于播放显示多媒体流。
  14. 根据权利要求11所述的基于太赫兹无线通信的多媒体传输系统,其中所述媒体提供设备为智能手机。
  15. 根据权利要求11所述的基于太赫兹无线通信的多媒体传输系统,其中所述媒体提供设备为笔记本电脑。
  16. 根据权利要求11所述的基于太赫兹无线通信的多媒体传输系统,其中所述媒体提供设备为个人数码助理。
  17. 根据权利要求11所述的基于太赫兹无线通信的多媒体传输系统,其中所述媒体接收设备为投影仪。
  18. 根据权利要求11所述的基于太赫兹无线通信的多媒体传输系统,其中所述媒体接收设备为显示器。
  19. 根据权利要求11所述的基于太赫兹无线通信的多媒体传输系统,其中所述媒体接收设备为电视机。
  20. 根据权利要求11所述的基于太赫兹无线通信的多媒体传输系统,其中所述媒体提供设备的数量为一台,而所述媒体接收设备的数量为至少一台。
PCT/CN2013/071995 2012-04-24 2013-02-28 一种基于太赫兹无线通信的多媒体流传输方法及系统 WO2013159594A1 (zh)

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