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    • 4. 发明专利
    • Video communication equipment, video communication method, video communication program and program recording medium
    • 空值
    • JP4056375B2
    • 2008-03-05
    • JP2002352592
    • 2002-12-04
    • シャープ株式会社
    • 次郎 仲林真司 山本信行 江間進 長谷川
    • H04N5/91H04N5/92H04N7/14H04N7/173H04N19/00H04N19/102H04N19/134H04N19/156H04N19/166H04N19/196H04N19/40H04N19/423H04N19/65H04N19/89H04N19/895H04N21/438
    • PROBLEM TO BE SOLVED: To prevent the quality of a recorded moving image from deteriorating even though there is an error in intra-frame data received on the basis of an intra-refresh request signal when starting the video recording. SOLUTION: A separating and multiplexing part 11 separates and multiplexes the frame data received by a radio part 12 being a communicating means. When the frame data are recorded in a video recording file 14, an error rate detecting/comparing part 18 compares the total error rates detected by a radio error detecting part 17c, a separation and multiplexing error detecting part 17b, and a moving image decode error detecting part 17a in processing intra-frame data received from the opposite communication terminal in accordance with the intra-refresh request signal transmitted from an inter-terminal control signal processing part 7 under the control of a video recording control part 6 with an error rate detected by a reproduction information error detecting part 16 about reproduction frame data which are decoded by a moving image decoder part 9 and are reproduced from an output frame memory 5, the switch of a video recording operating part 13 is changed over to a frame data side having a lower error rate to record the frame data in the video recording file 14. COPYRIGHT: (C)2004,JPO&NCIPI
    • 要解决的问题:为了防止记录的运动图像的质量劣化,即使当开始视频记录时,根据刷新内容请求信号接收的帧内数据存在错误。 解决方案:分离和复用部分11分离和复用由作为通信装置的无线电部分12接收的帧数据。 当帧数据被记录在视频记录文件14中时,错误率检测/比较部分18比较由无线电错误检测部分17c,分离和复用错误检测部分17b检测到的总错误率和运动图像解码错误 根据在视频记录控制部分6的控制下从终端间控制信号处理部分7发送的帧内刷新请求信号,检测部分17a处理从相对的通信终端接收的帧内数据,检测到错误率 通过再生信息检错部16关于由运动图像解码器部分9解码并从输出帧存储器5再现的再现帧数据,将视频记录操作部分13的切换切换到具有 在视频记录文件14中记录帧数据的较低错误率。版权所有:(C)2004,JPO&NCIPI
    • 6. 发明专利
    • Image voice communication device
    • 空值
    • JP4462833B2
    • 2010-05-12
    • JP2003063892
    • 2003-03-10
    • シャープ株式会社
    • 次郎 仲林信行 江間進 長谷川
    • H04N7/173H04L1/00H04N7/08H04N7/081H04N7/14H04N7/24H04N19/00H04N19/65H04N19/70H04N19/89H04N21/437H04N21/4425H04N21/647
    • PROBLEM TO BE SOLVED: To provide an image/audio communication device capable of suppressing an image quality and a sound quality from deteriorating by improving error resistance when a data error occurs in a radio section. SOLUTION: In a radio part 18, an instruction of increase or decrease in a transmission power is sent from a base station to a communication terminal in accordance with whether a radio status under communications is good or not. A control part 19 confirms a change of the transmission power resulting from the instruction. The control part 19 confirms the detected results of a data separation error detection part 17, an image error detection part 13 and a sound error detection part 15 to determine whether or not data are satisfactorily received and whether or not any error occurs. On the basis of the error detection information, the control part 19 sets an optimal multiplexing frame length to communications. COPYRIGHT: (C)2004,JPO&NCIPI
    • 要解决的问题:提供一种能够通过在无线电部分中发生数据错误时改善误差电阻来抑制图像质量和声音质量劣化的图像/音频通信设备。 解决方案:在无线电部分18中,根据通信中的无线电状态是否良好,从基站向通信终端发送增加或减少发送功率的指令。 控制部19确认由该指示产生的发送功率的变化。 控制部分19确认数据分离错误检测部分17,图像错误检测部分13和声音检测部分15的检测结果,以确定数据是否被令人满意地接收以及是否发生任何错误。 基于错误检测信息,控制部分19将通信中的最佳多路复用帧长度设置。 版权所有(C)2004,JPO&NCIPI