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    • 12. 发明授权
    • A videophone having an automatic answering capability
    • 具有自动应答功能的视频电话
    • US5345258A
    • 1994-09-06
    • US57261
    • 1993-05-04
    • Atsushi MatsubaraYoshinori SaitoSeiji KatoYoshinobu Yamakita
    • Atsushi MatsubaraYoshinori SaitoSeiji KatoYoshinobu Yamakita
    • H04M1/65H04M11/06H04N7/14H04M11/00H04N7/12
    • H04N7/147
    • A videophone at e.g., a called location, receives sound signals, video signals and control signals through a communication circuit from a communication line and originating at, e.g., a calling videophone. A start signal detecting means, within the called videophone detects a storage start requesting signal from received control signals originating at a calling videophone. At the time of such detection, a coding circuit within the called videophone again encodes the video signals, that are received by the communication circuit and continuously decoded by a decoding circuit, and transmitted by the calling videophone but only by one frame therefrom and stores the frame into a storage circuit. After storing the one frame, a change-over circuit in the called videophone switches to the storage circuit to continuously store the subsequent incoming coded video and sound signals for eventual playback.
    • 例如,被叫位置的可视电话通过来自通信线路的通信电路接收声音信号,视频信号和控制信号,并且起始于例如呼叫的可视电话。 被叫可视电话内的起始信号检测装置从接收到来自主叫视频电话的控制信号检测存储开始请求信号。 在这种检测时,被叫视频电话中的编码电路再次对由通信电路接收并由解码电路连续解码并由主叫视频电话发送但仅通过一帧的视频信号进行存储, 框架进入存储电路。 在存储一帧之后,被叫可视电话中的切换电路切换到存储电路,以连续存储随后的输入编码视频和声音信号以便最终重放。
    • 13. 发明授权
    • System and method for transmitting image data on a telephone network or
equivalent
    • 用于在电话网络或等同物上传输图像数据的系统和方法
    • US4939767A
    • 1990-07-03
    • US194818
    • 1988-05-17
    • Yoshinori SaitoHiroyuki HayasakiHisashi MatsuyamaHisaharu Nakashima
    • Yoshinori SaitoHiroyuki HayasakiHisashi MatsuyamaHisaharu Nakashima
    • H04N1/327H04N1/333H04N7/14
    • H04N1/32791H04N1/32702H04N1/33323H04N1/33392H04N7/147H04N2201/3335H04N2201/33371
    • A system for transmitting image data on a telephone network or equivalent, which typically includes video or visual telephones as apparatus of sending part and receiving part. In the video telephone of sending part, when an image data sending key is operated, a DTMF signal generator included in a modem is started to operated and a specified DTMF signal, for example, DTMF-A signal or DTMF-B signal is sent as a signal DTMF-DTA to a telephone circuit through a network control unit for approximate 300 milliseconds. Succeedingly, in spite of presence or absence of a responsive signal from the video telephone of receiving part, a non-signal state is formed for approximate 75 milliseconds, immediately thereafter, the image data is sent from the video telephone of sending part at a transmission speed of 4,800 bps or 2,400 bps. In the video telephone of receiving part, when the signal DTMF-DTA, that is, the above described DTMF-A signal or DTMF-B signal is continuously received for approximate 250 milliseconds, a modem thereof is started at 4,800 bps or 2,400 bps, and the image data being sent from the video telephone of sending part is received.
    • 用于在电话网络或等同物上传送图像数据的系统,其通常包括作为发送部分和接收部分的装置的视频或可视电话。 在发送部分的视频电话中,当图像数据发送键被操作时,包括在调制解调器中的DTMF信号发生器开始运行,并且将指定的DTMF信号,例如DTMF-A信号或DTMF-B信号作为 通过网络控制单元向电话线路发送信号DTMF-DTA约300毫秒。 顺便地说,尽管存在或不存在来自接收部分的视频电话的响应信号,但是形成非信号状态大约75毫秒,紧接着,在发送时立即从发送部分的视频电话发送图像数据 速度为4,800 bps或2,400 bps。 在接收部分的视频电话中,当信号DTMF-DTA,即上述DTMF-A信号或DTMF-B信号连续接收大约250毫秒时,其调制解调器以4,800bps或2,400bps开始, 并且接收从发送部分的视频电话发送的图像数据。
    • 20. 发明申请
    • HELICAL SCAN TYPE MAGNETIC TAPE REPRODUCTION APPARATUS AND MAGNETIC TAPE REPRODUCTION METHOD
    • 螺旋扫描型磁带复制装置和磁带复制方法
    • US20080002284A1
    • 2008-01-03
    • US11747464
    • 2007-05-11
    • Toshiyuki HiroseHideki NonoyamaOsamu NakamuraAkira ItouYoshinori Saito
    • Toshiyuki HiroseHideki NonoyamaOsamu NakamuraAkira ItouYoshinori Saito
    • G11B5/584
    • G11B5/534G11B5/588
    • Disclosed herein is a helical scan type magnetic tape reproduction apparatus, including: a helical scan type reproduction head capable of moving in the track widthwise direction by displacement of said actuator itself; target time decision means for measuring a period of time from a reference point of time with regard to each of a plurality of markers recorded in a dispersed relationship at predetermined positions on the tracks in advance to the marker by a predetermined number of times, averaging the measurement time periods of the markers and storing the average time periods; and tracking control means for measuring actual time periods from the reference time points with regard to the markers and performing updating control of a control voltage to be applied to said actuator for said reproduction head in accordance with time information of the differences between the target time periods and the actual time periods.
    • 这里公开了一种螺旋扫描型磁带再现装置,包括:能够通过所述致动器本身的位移沿轨道宽度方向移动的螺旋扫描型再现头; 目标时间决定装置,用于相对于在轨道上的预定位置以分散关系记录的多个标记中的每一个,从参考时间点预先指定预定次数来测量一段时间, 标记的测量时间段并存储平均时间段; 以及跟踪控制装置,用于根据标记的参考时间点测量实际时间段,并根据目标时间段之间的差异的时间信息执行要施加到所述再现头的所述致动器的控制电压的更新控制 和实际时间段。