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    • 1. 发明申请
    • CELLULAR PHONE SYSTEM, VIDEO-PHONE CALL CONTROL DEVICE, CELLULAR PHONE AND VIDEO-PHONE CALL CONTROL METHOD
    • 蜂窝电话系统,视频电话呼叫控制设备,蜂窝电话和视频电话呼叫控制方法
    • US20070273749A1
    • 2007-11-29
    • US11754750
    • 2007-05-29
    • Nobuhiro FujiiMasashi Kanauchi
    • Nobuhiro FujiiMasashi Kanauchi
    • H04N7/14
    • H04N7/147H04M1/576H04M1/72522H04M3/436H04W4/18H04W68/00H04W76/36
    • An object of the present invention is to allow a cellular phone to establish a video-phone call even when there is an incoming video-phone call during the packet communications. The cellular phone system comprises a cellular phone and the Mobile Multimedia Switching Center (MMS). The MMS comprises a call type judgment section that judges, when a call request is made to the cellular phone, whether the call request is for a video-phone call; a communication status judgment section that judges whether the cellular phone is performing packet communications; and an adding section that adds call information to the effect that the call request is for a video-phone call to an incoming call signal in cases where the call request is for a video-phone call and packet communications are being performed. The cellular phone comprises reporting means (DCF or the like) for judging whether call information has been added to the incoming call signal when the cellular phone is performing packet communications and for reporting that there has been an incoming video-phone call and establishment means (MTF and TAF (AV) and so forth) for establishing a video-phone call by disconnecting the packet communications.
    • 本发明的目的是允许蜂窝电话建立视频电话呼叫,即使在分组通信期间存在进入的视频电话呼叫。 蜂窝电话系统包括蜂窝电话和移动多媒体交换中心(MMS)。 MMS包括:呼叫类型判断部,当对蜂窝电话进行呼叫请求时,判断呼叫请求是否用于视频电话呼叫; 通信状态判断部,判断蜂窝电话是否进行分组通信; 以及添加部分,在呼叫请求是用于视频电话呼叫和分组通信正在被执行的情况下,增加呼叫信息,使呼叫请求用于对来电信号的视频电话呼叫。 蜂窝电话包括报告装置(DCF等),用于在蜂窝电话正在执行分组通信时判断呼叫信息是否已经被添加到呼入信号,并且用于报告已经有进入的视频电话呼叫和建立装置( MTF和TAF(AV)等),用于通过断开分组通信来建立视频电话呼叫。