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    • 4. 发明授权
    • Video conference device with facsimile function
    • 具有传真功能的视频会议设备
    • US5373316A
    • 1994-12-13
    • US26812
    • 1993-03-05
    • Iwao IshinabeNobuyuki MatsuyamaNobuyoshi ToriiShuichi Ishiwatatoshiaki WatanukiTomoki KozonoToshiyuki SumidaYoji ShibataKiyoshi Ishida
    • Iwao IshinabeNobuyuki MatsuyamaNobuyoshi ToriiShuichi Ishiwatatoshiaki WatanukiTomoki KozonoToshiyuki SumidaYoji ShibataKiyoshi Ishida
    • H04N1/00H04N7/14H04N7/15H04M11/00H04N7/12
    • H04N7/147
    • A videoconference device connected to a general commercially available facsimile unit and having a function of sending/receiving a facsimile signal during communication. The videoconference device 1 has a facsimile connection terminal connected to a facsimile unit line connection terminal; a call unit for outputting a call signal for a general analog telephone; a 2W/4W convertor for converting a signal from a 2-line facsimile unit to a signal in a 4-line system where the sending and receiving of signals are separated; a voice band signal encode/decode unit for encoding/decoding a facsimile voice band signal; a power supply for supplying to the facsimile connection terminal a voltage/current which meets the standards of a general analog telephone set; a first current detector for detecting the flow of a current on the basis of supply power from the power supply; a first switching unit for selecting whether a signal from the facsimile connection terminal should be connected to the call unit or to a circuit composed of the power supply, 2W/4W converter, and first current detector; a videoconference control unit: and a multiplexing/demultiplexing control unit for multiplexing the encoded/decoded facsimile voice band signal with a video/voice signal and for demultiplexing the multiplexed signal into facsimile voice band signal, a video/voice signal.
    • 一种视频会议装置,连接到一般商业传真机,并且具有在通信期间发送/接收传真信号的功能。 视频会议装置1具有连接到传真单元线路连接终端的传真连接终端; 用于输出通用模拟电话的呼叫信号的呼叫单元; 2W / 4W转换器,用于将来自2线传真单元的信号转换成信号的发送和接收被分离的4线系统中的信号; 用于对传真语音频带信号进行编码/解码的语音频带信号编码/解码单元; 用于向传真连接端子提供满足通用模拟电话机的标准的电压/电流的电源; 第一电流检测器,用于基于来自电源的供电来检测电流的流动; 第一切换单元,用于选择来自传真连接终端的信号是否应连接到呼叫单元或由电源2W / 4W转换器和第一电流检测器组成的电路; 一个视频会议控制单元和一个复用/解复用控制单元,用于将编码/解码的传真语音频带信号与视频/语音信号进行多路复用,并将复用的信号解复用为传真语音频带信号,视频/语音信号。
    • 6. 发明授权
    • Video telephone system
    • 视频电话系统
    • US5444477A
    • 1995-08-22
    • US139745
    • 1993-10-22
    • Hitoshi YamaderaTakafumi KawasakiTakashi MatsubaraHiroaki TakatsukiAtsuo YoshidaYoji ShibataMasumi FukanoKiyoshi IshidaIwao Ishinabe
    • Hitoshi YamaderaTakafumi KawasakiTakashi MatsubaraHiroaki TakatsukiAtsuo YoshidaYoji ShibataMasumi FukanoKiyoshi IshidaIwao Ishinabe
    • H04M3/56H04M3/58H04M3/60H04N7/14H04M3/42
    • H04N7/142H04M3/58H04M3/60
    • A video telephone system which includes a master video telephone terminal (secretary terminal) connected to a communication network and slave video telephone terminals (executive terminals) connected to the master video telephone terminal in which the master video telephone terminal can transfer a call to the slave video telephone terminals. When a call comes into the secretary terminal from a remote terminal on the communication network, a line control section of the secretary terminal sets up a line. Video data and speech data received on the line are decoded by a video signal coding-decoding section and an aural signal coding-decoding section and the decoded signals are output through a display and a speech output device. Sound and images picked up by a microphone and a camera respectively are coded for transmission. Then, if a predetermined instruction of call transfer to an executive terminal is entered on an electronic tablet of the secretary terminal, a communication branch control section of the secretary terminal calls the executive terminal, sets up a line between the secretary and executive terminals on a local transmission network, and connects the line between the secretary terminal and the remote terminal.
    • 一种视频电话系统,包括连接到通信网络的主视频电话终端(秘书终端)和连接到主视频电话终端的从属视频电话终端(执行终端),其中主视频电话终端可以将呼叫转移到从属 视频电话终端。 当来自通信网络上的远程终端的秘书终端呼叫时,秘书终端的线路控制部分建立一条线路。 在线上接收的视频数据和语音数据由视频信号编码解码部分和听觉信号编码解码部分解码,解码信号通过显示器和语音输出装置输出。 由麦克风和相机分别拾取的声音和图像分别进行编码以进行传输。 然后,如果在秘书终端的电子平板电脑上输入了对执行终端的呼叫转移的预定指令,则秘书终端的通信分支控制部分呼叫执行终端,在秘书和执行终端之间建立一行 本地传输网络,并连接秘书终端和远程终端之间的线路。