WO2010108344A1 - 一种共享多媒体广播节目的系统及方法 - Google Patents

一种共享多媒体广播节目的系统及方法 Download PDF

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Publication number
WO2010108344A1
WO2010108344A1 PCT/CN2009/072536 CN2009072536W WO2010108344A1 WO 2010108344 A1 WO2010108344 A1 WO 2010108344A1 CN 2009072536 W CN2009072536 W CN 2009072536W WO 2010108344 A1 WO2010108344 A1 WO 2010108344A1
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WO
WIPO (PCT)
Prior art keywords
wireless data
data terminal
multimedia broadcast
streaming media
broadcast program
Prior art date
Application number
PCT/CN2009/072536
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English (en)
French (fr)
Inventor
郭素光
Original Assignee
中兴通讯股份有限公司
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Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US13/202,900 priority Critical patent/US8417830B2/en
Priority to EP09842078.9A priority patent/EP2408201A4/en
Publication of WO2010108344A1 publication Critical patent/WO2010108344A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing 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
    • H04N21/436Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/43615Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41Structure of client; Structure of client peripherals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing 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
    • H04N21/436Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • H04N21/43632Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing 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
    • H04N21/436Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • H04N21/43637Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11]

Definitions

  • the present invention relates to the field of mobile communication technologies, and in particular, to a system and method for sharing multimedia broadcast programs.
  • CMMB China Mobile Multimedia Broadcasting
  • FIG. 1 is a block diagram of a system structure of a conventional wireless data terminal supporting multimedia broadcasting, which is composed of a PC and a wireless data terminal.
  • the PC is composed of a program control module and a custom player module.
  • the program control module is used to complete functions such as channel search and program navigation.
  • the custom player module is used for playing audio and video data streams, so that the user can watch the program.
  • the wireless data terminal side includes a multimedia broadcast processing chip, a multimedia broadcast data processing module, a program management module, an AT command parsing module, a protocol stack, and a USB (Universal Serial Bus) transmission module.
  • USB Universal Serial Bus
  • the multimedia broadcast data processing module connected to the interface 1 repackages the decoded digital signal into a format used by the PC, and sends the format through the interface 2.
  • the USB transmission module is transmitted to the PC by the USB transmission module, and the AT command parsing module also receives the AT command of the PC from the USB transmission module through the interface 5, and performs corresponding processing. If it is related to the multimedia broadcast, the interface is called. 4 connected program management module for channel search, program reservation, and the like.
  • the program management module is connected to the multimedia broadcast processing chip through the interface 3, and the protocol stack is connected to the AT command parsing module and the USB transmission module through the interface 6 and the interface 7, respectively.
  • the wireless data terminal communicates with the PC as a standard COM device based on the USB interface, as shown in the figure 8 and interface 9, wherein the interface 9 is a bidirectional interface for transmitting the PC side and the wireless The AT command on the data terminal side (such as registering the network, selecting the program, etc.); the interface 8 is a one-way interface, and the wireless data terminal uses it to send program data to the PC, and the PC receives the data from the COM port and decodes the data. Play.
  • the wireless data terminal supporting the multimedia broadcast can realize the function of watching the multimedia broadcast program by being combined with the PC.
  • a multimedia broadcast wireless data terminal can only watch programs through a PC connected with it, and cannot share with others.
  • the technical problem to be solved by the present invention is to provide a system and method for sharing a multimedia broadcast program to overcome the inability to achieve multimedia broadcast program sharing.
  • the present invention provides a method for sharing a multimedia broadcast program, which is applied to a plurality of PCs belonging to the same subnet, wherein the first PC is configured with a wireless data terminal, and the method includes:
  • the other PCs in the subnet want to share the multimedia broadcast program with the first PC, initiate a sharing request to the first PC, and forward the data to the wireless data terminal by the first PC; After the wireless data terminal converts the multimedia broadcast program into a streaming media format, it is sent by the first PC to the PC that initiates the sharing request.
  • the above method may also have the following features:
  • an IP address IP1 of the wireless data terminal and an IP address of a USB network device interface on the first PC IP2 is in the same subnet and is not in the same subnet as IP address IP3 of the first PC; and the first PC has a routing relationship between IP2 and IP3.
  • the above method may also have the following features:
  • the USB network device interface on the wireless data terminal is obtained by the wireless data terminal enumerating the interface.
  • the above method may also have the following features:
  • the IP address IP1 of the wireless data terminal is allocated by the wireless data terminal.
  • the above method may further include:
  • the PC that initiates the sharing request specifies the Uniform Resource Locator URL address of the IP1 in the streaming media player on the PC before initiating the sharing request.
  • the above method may further include:
  • the wireless data terminal converts the multimedia broadcast program into a streaming media format
  • the wireless data program is sent to the first PC; after receiving the first PC, the multimedia broadcast program is performed by using the standard streaming media player thereon. Play.
  • the present invention further provides a system for sharing a multimedia broadcast program, the system comprising: a first PC and a wireless data terminal that are used in conjunction with each other and other ones on the same subnet as the first PC PC
  • the other PC is configured to initiate a sharing request to the first PC when the multimedia broadcast program is to be shared with the first PC; and to play the received streaming media by using the streaming media player thereon.
  • a formatted multimedia broadcast program the first PC is configured to forward the sharing request to the wireless data terminal; and is further configured to forward the received multimedia broadcast program in the streaming media format to a location that initiates a sharing request Said other PC;
  • the wireless data terminal is configured to, after receiving the sharing request, convert the multimedia broadcast program into a streaming media format, and then send the multimedia broadcast program to the first PC.
  • an IP address IP1 of the wireless data terminal and an IP address of a USB network device interface on the first PC IP2 is in the same subnet and is not in the same subnet as IP address IP3 of the first PC; and the first PC has a routing relationship between IP2 and IP3.
  • the USB transmission module in the wireless data terminal includes a network device interface management module, configured to enumerate the interface on the wireless data terminal and the first PC to perform multimedia broadcast program transmission as a standard network device interface. .
  • the wireless data terminal further includes a first-class media server module, one end of which is connected to the network
  • the standby interface management module is connected to the other end, and the other end is connected to the multimedia broadcast data processing module, configured to convert the data received from the multimedia broadcast data processing module into a streaming media format and send the data to the network device interface management module;
  • the network device interface management module is further configured to send the received multimedia broadcast program in the streaming media format to the first PC.
  • the first PC further includes a standard streaming media player for playing the received multimedia broadcast program in the streaming media format.
  • FIG. 1 is a block diagram of a system structure of a wireless data terminal supporting multimedia broadcasting in the prior art
  • FIG. 2 is a structural block diagram of a PC and a wireless data terminal used in conjunction with each other in the embodiment of the present invention
  • FIG. 3 is a network topology diagram of an application example of the present invention.
  • the present invention provides a system for sharing a multimedia broadcast program, including a first PC and a wireless data terminal and other PCs in the same subnet as the first PC; the wireless data terminal Communicate with the first PC through the USB network device interface; the IP address IP1 of the wireless data terminal and the IP address IP2 of the USB network device interface on the first PC are on the same subnet, and the IP address IP3 of the first PC Not in the same subnet; and the routing relationship between IP2 and IP3 is stored on the first PC.
  • the other PCs mentioned above are used to first share the multimedia broadcast program with the first PC.
  • the PC initiates a sharing request; and is also used to play the received multimedia broadcast program in the streaming media format by using the streaming media player thereon.
  • the first PC is configured to forward the sharing request to the wireless data terminal; and is further configured to forward the received multimedia broadcast program in a streaming media format to another PC that initiates the sharing request.
  • the wireless data terminal is configured to convert the multimedia broadcast program into a streaming media format after receiving the sharing request, and then send the multimedia broadcast program to the first PC.
  • FIG. 2 it is a structural diagram of a PC and a wireless data terminal used in conjunction with each other.
  • a streaming media server module and a network device interface management module are added to the wireless data terminal, and a standard streaming media player is set on the PC.
  • the network device interface management module is located in the USB transmission module, and one end thereof is connected to the standard streaming media player through a network device interface, one end is connected to the streaming media server module, and the other end of the streaming media server module is connected to the multimedia broadcast data processing module. .
  • the streaming media server module is configured to convert the data received from the multimedia broadcast data processing module into a streaming media format and send the data to the network device interface management module;
  • Network device interface management module for enumerating USB data device interfaces and transmitting data.
  • the interface for connecting the standard streaming media player on the module to the PC is enumerated as a standard USB network device interface; during normal data transmission, the PC side is used to pass the USB
  • the data sent by the network device interface is sent to the streaming media server according to the standard IP packet, and the IP packet sent by the streaming media server is converted according to the USB protocol requirement and sent to the PC side through the USB network device interface;
  • the standard streaming media player supports standard RTP (Real-time Transport Protocol), RTCP (RTP Control Protocol), RTSP (Real Time Streaming Protocol), and other streaming media protocols.
  • RTP Real-time Transport Protocol
  • RTCP RTP Control Protocol
  • RTSP Real Time Streaming Protocol
  • the present invention provides a method for sharing a multimedia broadcast program, including:
  • the sharing request is initiated to the first PC, and is forwarded by the first PC to the wireless data terminal.
  • the wireless data terminal converts the multimedia broadcast program into a streaming media format, it is sent to the PC that initiates the sharing request by using the first PC; and after receiving the PC, the received multimedia broadcast is played by using the streaming media player thereon.
  • Multimedia broadcasting festival Purpose sharing
  • the wireless data terminal communicates with the first PC through a USB network device interface; the IP address IP1 of the wireless data terminal and the IP address IP2 of the USB network device interface on the first PC are on the same subnet, and the first The IP address IP3 of the PC in the network is not on the same subnet; and the routing relationship between IP2 and IP3 is stored on the PC.
  • the URL Uniform Resource Locator
  • the interface After the IP3 address interface on the first PC is routed to the interface of the IP2 address, the interface sends a sharing request message to the wireless data terminal; and the wireless data terminal follows the reverse path after receiving the sharing request message.
  • the multimedia broadcast program in the streaming media format is transmitted to the PC that initiated the sharing request.
  • the wireless data terminal converts the received multimedia broadcast programs into a streaming media format
  • the first PC needs to watch the multimedia broadcast programs, and also plays them through a standard streaming media player.
  • the specific process of playing is: the first PC specifies the IP address of the IP1 in the standard streaming media player thereon, and the IP data generated by the player to the IP1 is sent to the interface of the IP2 address, and the wireless data
  • the multimedia broadcast program of the streaming media format that arrives at IP2 sent by the terminal is received and played by the player.
  • a method for sharing a multimedia broadcast (such as CMMB) program includes the following steps:
  • C1 allocates an IP address IP2 on the same subnet as the wireless data terminal for the network device interface connected to the wireless data terminal, and sets a subnet mask;
  • IP3 Set the routing relationship between IP2 and C1 IP address IP3 in the IP network in C1.
  • the process of setting the IP address IP3 for C1 can be performed at any step before this step.
  • IP3 is not in the same subnet as IP1 and IP2.
  • C3 wants to share the CMMB program, it specifies the IP address of the IP1 in the streaming media player.
  • the sharing request message initiated by C3 is sent to the interface of the IP2 address through the IP3 address interface of C1.
  • the interface sends a sharing request message to the wireless data terminal; and the wireless data terminal sends the streaming media format CMMB program to the C3 along the reverse path after receiving the sharing request message;
  • e, C3 uses its upstream media player to play the received CMMB program.
  • each IP address in Figure 3 can be modified to other ones in the actual implementation process, but it must be ensured that IP1 and IP2 are in the same subnet, and are not in the same subnet as IP3 and IP4.
  • multimedia broadcast signals received by wireless can be shared in a wired network, and other computers on the same subnet as the computer where the wireless data terminal is located can also view multimedia in real time. Broadcasting.

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

Description

一种共享多媒体广播节目的系统及方法
技术领域
本发明涉及移动通信技术领域, 尤其涉及一种共享多媒体广播节目的系 统及方法。
背景技术
目前, 随着 3G ( 3rd Generation,指第三代数字通信)无线网络逐渐普及、 网络传输速率增大, 越来越多的基于 3G 网络的业务 * ^开。 手机电视就是 其中一项业务。 随着 3G 网络速率的提升, 利用无线网络传播电视信号, 通 过手机、 无线数据终端等终端设备观看电视已经成为越来越大众化的业务。 CMMB ( China Mobile Multimedia Broadcasting, 中国移动多媒体广播 )就是 比较典型的该类服务。
图 1所示为传统的支持多媒体广播的无线数据终端的系统结构框图, 该 系统由 PC机与无线数据终端组成。 其中, PC机由节目控制模块与自定义播 放器模块组成, 节目控制模块用于完成频道搜索、 节目导航等功能, 自定义 播放器模块用于实现音视频数据流的播放, 便于用户观看节目。 无线数据终 端侧包括多媒体广播处理芯片、 多媒体广播数据处理模块、 节目管理模块、 AT命令解析模块、 协议栈及 USB ( Universal Serial Bus, 通用串行总线)传 输模块。 其中, 多媒体广播处理芯片完成数字信号的下变频、 解码等功能后, 由和其通过接口 1相连的多媒体广播数据处理模块将解码后的数字信号重新 打包成 PC机使用的格式, 通过接口 2发送给 USB传输模块, 由 USB传输模 块传送到 PC机, 同时 AT命令解析模块还通过接口 5从 USB传输模块接收 PC机的 AT命令, 进行相应的处理, 如果与多媒体广播相关, 则调用与其通 过接口 4相连的节目管理模块进行频道搜索、 节目预定等。 此外, 节目管理 模块通过接口 3与多媒体广播处理芯片相连, 协议栈分别通过接口 6和接口 7与 AT命令解析模块及 USB传输模块相连。
无线数据终端作为基于 USB接口的标准的 COM设备与 PC机进行通讯, 如图中的接口 8和接口 9, 其中, 接口 9为双向接口, 用于传送 PC侧与无线 数据终端侧的 AT命令(如注册网络、 选择节目等) ; 接口 8为单向接口, 无线数据终端用其向 PC机发送节目数据, PC机从该 COM口接收到数据后 进行数据的解码和播放。
综上所述可以看出, 支持多媒体广播的无线数据终端通过与 PC机的配 合, 可以实现观看多媒体广播节目的功能。 但是这样的多媒体广播无线数据 终端只能通过与其配合的 PC机观看节目, 无法与他人进行分享。
发明内容
本发明所要解决的技术问题是提供一种共享多媒体广播节目的系统及方 法, 以克服无法实现多媒体广播节目共享的缺陷。
为解决上述问题, 本发明提供了一种共享多媒体广播节目的方法, 应用 于属于同一子网的多个 PC机之间, 其中第一 PC机上配置有无线数据终端, 所述方法包括:
当所述子网中的其它 PC机欲与所述第一 PC机共享多媒体广播节目时, 向所述第一 PC机发起共享请求,由所述第一 PC机转发给所述无线数据终端; 所述无线数据终端将多媒体广播节目转换为流媒体格式后,通过所述第一 PC 机发送给发起共享请求的所述 PC机。
进一步地, 上述方法还可具有以下特点:
所述无线数据终端与所述第一 PC机之间通过通用串行总线 USB网络设 备接口进行通讯;所述无线数据终端的 IP地址 IP1和所述第一 PC机上的 USB 网络设备接口的 IP地址 IP2在同一子网, 与所述第一 PC机的 IP地址 IP3不 在同一子网; 且所述第一 PC机上保存有 IP2与 IP3间的路由关系。
进一步地, 上述方法还可具有以下特点:
所述无线数据终端上的 USB网络设备接口是所述无线数据终端通过对该 接口进行枚举的方式得到的。
进一步地, 上述方法还可具有以下特点:
所述无线数据终端的 IP地址 IP1是所述无线数据终端自行分配的。
进一步地, 上述方法还可包括: 所述发起共享请求的 PC机在发起所述共享请求之前,在该 PC机上流媒 体播放器中指定 IP1的统一资源定位符 URL地址。
进一步地, 上述方法还可包括:
所述无线数据终端将多媒体广播节目转换成流媒体格式后, 发送给所述 第一 PC机; 所述第一 PC机收到后, 利用其上标准流媒体播放器对所述多媒 体广播节目进行播放。
为解决上述问题, 本发明还提供了一种共享多媒体广播节目的系统, 所 述系统包括: 相互配合使用的第一 PC机与无线数据终端以及与所述第一 PC 机处于同一子网的其它 PC机;
所述其它 PC机用于在欲与所述第一 PC机共享多媒体广播节目时,向所 述第一 PC机发起共享请求; 还用于利用其上的流媒体播放器播放收到的流 媒体格式的多媒体广播节目; 所述第一 PC机用于将所述共享请求转发给所述无线数据终端; 还用于 将收到的所述流媒体格式的多媒体广播节目转发给发起共享请求的所述其它 PC机; 以及
所述无线数据终端用于在接收到所述共享请求后, 将多媒体广播节目转 换为流媒体格式后, 发送给所述第一 PC机。
进一步地, 上述系统还可具有以下特点:
所述无线数据终端与所述第一 PC机之间通过通用串行总线 USB网络设 备接口进行通讯;所述无线数据终端的 IP地址 IP1和所述第一 PC机上的 USB 网络设备接口的 IP地址 IP2在同一子网, 与所述第一 PC机的 IP地址 IP3不 在同一子网; 且所述第一 PC机上保存有 IP2与 IP3间的路由关系。
进一步地, 上述系统还可具有以下特点:
所述无线数据终端中的 USB传输模块中包括一网络设备接口管理模块, 其用于将该无线数据终端上与所述第一 PC机进行多媒体广播节目传输的接 口枚举为标准的网络设备接口。
进一步地, 上述系统还可具有以下特点:
所述无线数据终端中还包括一流媒体服务器模块, 其一端与所述网络设 备接口管理模块相连, 另一端与多媒体广播数据处理模块相连, 其用于将从 所述多媒体广播数据处理模块接收到的数据转换成流媒体格式并发送给所述 网络设备接口管理模块; 以及
所述网络设备接口管理模块还用于将接收到的所述流媒体格式的多媒体 广播节目发送给所述第一 PC机。
进一步地, 上述系统还可具有以下特点:
所述第一 PC机中还包括一标准的流媒体播放器, 其用于播放接收到的 所述流媒体格式的多媒体广播节目。 附图概述
图 1是现有技术中支持多媒体广播的无线数据终端的系统结构框图; 图 2是本发明实施例中相互配合使用的 PC机与无线数据终端的结构框 图;
图 3是本发明应用实例的网络拓朴图; 以及
图 4是本发明应用实例的流程图。 本发明的较佳实施方式
下面将结合附图及实施例对本发明的技术方案进行更详细的说明。
为了解决上述技术问题,本发明提供了一种共享多媒体广播节目的系统, 包括相互配合使用的第一 PC机与无线数据终端及与第一 PC处于同一子网的 其它 PC机; 上述无线数据终端与第一 PC机之间通过 USB网络设备接口进 行通讯; 无线数据终端的 IP地址 IP1和第一 PC机上的 USB网络设备接口的 IP地址 IP2在同一子网, 与第一 PC机的 IP地址 IP3不在同一子网; 且第一 PC机上保存有 IP2与 IP3间的路由关系。
上述其它 PC机用于在欲与第一 PC机共享多媒体广播节目时, 向第一
PC机发起共享请求;还用于利用其上的流媒体播放器播放收到的流媒体格式 的多媒体广播节目。 第一 PC机用于将共享请求转发给无线数据终端; 还用于将收到的流媒 体格式的多媒体广播节目转发给发起共享请求的其它 PC。
无线数据终端用于在接收到共享请求后, 将多媒体广播节目转换为流媒 体格式后, 发送给所述第一 PC机。
如图 2所示, 为相互配合使用的 PC机与无线数据终端的结构图。 其中, 在无线数据终端中增加了流媒体服务器模块及网络设备接口管理模块,在 PC 机上设置了标准流媒体播放器。上述网络设备接口管理模块位于 USB传输模 块中, 其一端通过网络设备接口与上述标准流媒体播放器相连, 一端与流媒 体服务器模块相连, 而流媒体服务器模块的另一端与多媒体广播数据处理模 块相连。
其中, 流媒体服务器模块用于将从多媒体广播数据处理模块接收到的数 据转换成流媒体格式并发送给网络设备接口管理模块;
网络设备接口管理模块,用于进行 USB网络设备接口的枚举与数据的传 输。 在无线数据终端启动时, 用于将该模块上与 PC机中的标准流媒体播放 器连接的接口枚举为标准的 USB网络设备接口; 在正常数据传输过程中, 用 于将 PC侧通过 USB网络设备接口发送来的数据按照标准的 IP包发送到流媒 体服务器, 将流媒体服务器发送的 IP包按照 USB协议要求转换并通过 USB 网络设备接口发送到 PC侧;
标准流媒体播放器支持标准的 RTP ( Real-time Transport Protocol, 实时 传送协议)、 RTCP ( RTP Control Protocol, RTP控制协议 )、 RTSP ( Real Time Streaming Protocol, 实时流传输协议)等流媒体协议, 用于播放无线数据终端 侧通过网络设备接口发来的流媒体格式的多媒体广播节目。 本发明提供了一种共享多媒体广播节目的方法, 包括:
当网络中的其它 PC机欲与与其属于同一子网的配置有无线数据终端的 第一 PC机共享多媒体广播节目时, 向第一 PC机发起共享请求, 由第一 PC 机转发给无线数据终端; 无线数据终端将多媒体广播节目转换为流媒体格式 后, 通过第一 PC机发送给上述发起共享请求的 PC; 以及该 PC收到后, 利 用其上的流媒体播放器播放收到的多媒体广播节目, 即实现了多媒体广播节 目的共享。
其中, 上述无线数据终端与第一 PC机之间通过 USB网络设备接口进行 通讯;无线数据终端的 IP地址 IP1和第一 PC机上的 USB网络设备接口的 IP 地址 IP2在同一子网, 与第一 PC机在网络中的 IP地址 IP3不在同一子网; 且 PC机上保存有 IP2与 IP3间的路由关系。
在上述发起共享请求的 PC机中, 需在流媒体播放器中指定 IP1的 URL ( Uniform Resource Locator, 统一资源定位符)地址, 这样, 播放器生成的共 享请求消息被发送到网络中,会到达第一 PC机上的 IP3地址接口后经过路由 发送到 IP2地址的接口上, 由该接口将共享请求消息发送到上述无线数据终 端; 而无线数据终端在接收到上述共享请求消息后会沿反向路径将流媒体格 式的多媒体广播节目发送到上述发起共享请求的 PC机。
此时, 由于无线数据终端把接收到的多媒体广播节目都转换成了流媒体 格式, 因此, 第一 PC机要想观看多媒体广播节目, 也要通过标准的流媒体 播放器进行播放。 而播放的具体流程为: 第一 PC机在其上的标准流媒体播 放器中指定到 IP1的 URL地址,播放器生成的到达 IP1的 IP数据就会发送到 IP2地址的接口中,而无线数据终端发送的到达 IP2的流媒体格式的多媒体广 播节目就会被该播放器收到并进行播放。
下面用本发明的一个应用实例进行进一步地说明。
以图 3所示的网络拓朴为例, 一种共享多媒体广播(如 CMMB )节目的 方法, 如图 4所示, 包括以下步骤:
a、 无线数据终端设备在启动时, 将其上与与其配合的 PC机 C1进行多 媒体广播节目传输的接口枚举为标准的网络设备接口, 而不是传统的 COM 口; 且为自身分配一个固定的 IP地址 IP1 ;
b、 C1 为其上与无线数据终端连接的网络设备接口分配一个与无线数据 终端处于同一子网的 IP地址 IP2, 并且设置子网掩码;
c、 在 C1中设置 IP2到 C1在 IP网络中的 IP地址 IP3的路由关系。 为 C1设置 IP地址 IP3的过程可以在本步骤之前的任意一步进行, 其中, IP3与 IP1、 IP2不在同一子网中; d、 C3欲共享 CMMB节目时, 其在其上的流媒体播放器中指定 IP1 的 URL地址, 则 C3发起的共享请求消息通过 C1的 IP3地址接口后经过路由发 送到 IP2地址的接口上, 由该接口将共享请求消息发送到上述无线数据终端; 而无线数据终端在接收到上述共享请求消息后会沿反向路径将流媒体格式的 CMMB节目发送到 C3上; 以及
e、 C3利用其上流媒体播放器播放接收到的 CMMB节目。
需要说明的是,图 3中各 IP地址可以在实际实施过程中可以修改为其他, 但是一定要保证 IP1与 IP2在同一子网中, 并且与 IP3、 IP4等不在同一子网 中。
当然, 本发明还可有其他多种实施例, 在不背离本发明精神及其实质的 但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。
工业实用性
釆用本发明的所描述的方法与系统, 能够将通过无线接收到的多媒体广 播信号在有线网络中实现共享, 使与无线数据终端所在计算机处于同一子网 上的其它计算机也能够实时地观看到多媒体广播节目。

Claims

权 利 要 求 书
1、 一种共享多媒体广播节目的方法, 应用于属于同一子网的多个 PC机 之间, 其中第一 PC机上配置有无线数据终端, 所述方法包括:
当所述子网中的其它 PC机欲与所述第一 PC机共享多媒体广播节目时, 向所述第一 PC机发起共享请求,由所述第一 PC机转发给所述无线数据终端; 所述无线数据终端将多媒体广播节目转换为流媒体格式后,通过所述第一 PC 机发送给发起共享请求的所述 PC机。
2、 如权利要求 1所述的方法, 其中:
所述无线数据终端与所述第一 PC机之间通过通用串行总线 USB网络设 备接口进行通讯;所述无线数据终端的 IP地址 IP1和所述第一 PC机上的 USB 网络设备接口的 IP地址 IP2在同一子网, 与所述第一 PC机的 IP地址 IP3不 在同一子网; 且所述第一 PC机上保存有 IP2与 IP3间的路由关系。
3、 如权利要求 2所述的方法, 其中:
所述无线数据终端上的 USB网络设备接口是所述无线数据终端通过对该 接口进行枚举的方式得到的。
4、 如权利要求 2所述的方法, 其中:
所述无线数据终端的 IP地址 IP1是所述无线数据终端自行分配的。
5、 如权利要求 2至 4中任一项所述的方法, 其还包括:
所述发起共享请求的 PC机在发起所述共享请求之前,在该 PC机上流媒 体播放器中指定 IP1的统一资源定位符 URL地址。
6、 如权利要求 1所述的方法, 其还包括:
所述无线数据终端将多媒体广播节目转换成流媒体格式后, 发送给所述 第一 PC机; 所述第一 PC机收到后, 利用其上标准流媒体播放器对所述多媒 体广播节目进行播放。
7、 一种共享多媒体广播节目的系统, 包括: 相互配合使用的第一 PC机 与无线数据终端以及与所述第一 PC机处于同一子网的其它 PC机; 所述其它 PC机用于在欲与所述第一 PC机共享多媒体广播节目时,向所 述第一 PC机发起共享请求; 还用于利用其上的流媒体播放器播放收到的流 媒体格式的多媒体广播节目; 所述第一 PC机用于将所述共享请求转发给所述无线数据终端; 还用于 将所述收到的流媒体格式的多媒体广播节目转发给发起共享请求的所述其它 PC机; 以及
所述无线数据终端用于在接收到所述共享请求后, 将多媒体广播节目转 换为流媒体格式后, 发送给所述第一 PC机。
8、 如权利要求 7所述的系统, 其中:
所述无线数据终端与所述第一 PC机之间通过通用串行总线 USB网络设 备接口进行通讯;所述无线数据终端的 IP地址 IP1和所述第一 PC机上的 USB 网络设备接口的 IP地址 IP2在同一子网, 与所述第一 PC机的 IP地址 IP3不 在同一子网; 且所述第一 PC机上保存有 IP2与 IP3间的路由关系。
9、 如权利要求 8所述的系统, 其中:
所述无线数据终端中的 USB传输模块中包括一网络设备接口管理模块, 其用于将该无线数据终端上与所述第一 PC机进行多媒体广播节目传输的接 口枚举为标准的网络设备接口。
10、 如权利要求 7至 9中任一项所述的系统, 其中:
所述无线数据终端中还包括一流媒体服务器模块, 其一端与所述网络设 备接口管理模块相连, 另一端与多媒体广播数据处理模块相连, 其用于将从 所述多媒体广播数据处理模块接收到的数据转换成流媒体格式并发送给所述 网络设备接口管理模块; 以及
所述网络设备接口管理模块还用于将接收到的所述流媒体格式的多媒体 广播节目发送给所述第一 PC机。
11、 如权利要求 10所述的系统, 其中:
所述第一 PC机中还包括一标准的流媒体播放器, 其用于播放接收到的 所述流媒体格式的多媒体广播节目。
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