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    AUDIO-VIDEO SIGNAL TRANSMISSION INTERFACE DEVICE AND METHOD
    5.
    发明授权
    AUDIO-VIDEO SIGNAL TRANSMISSION INTERFACE DEVICE AND METHOD 有权

    公开(公告)号：EP2677742B1

    公开(公告)日：2018-06-27

    申请号：EP12754505.1

    申请日：2012-02-20

    申请人： Huawei Device (Dongguan) Co., Ltd.

    发明人： ZHANG, Xiangdang ,  GUO, Zufeng

    IPC分类号： H04N21/4363 ,  H04R5/04 ,  H04N5/765

    CPC分类号： H04R5/04 ,  H04N5/765 ,  H04N21/43632

    摘要： An audio and video signal transmission interface apparatus includes a left sound channel interface, a right sound channel interface, a multimedia terminal interface, and a ground interface; where a first power supply and a first resistor are connected in series in the multimedia terminal interface; and the apparatus further includes a voltage detecting module, a determining module, a control module, and a second resistor connected in series in the multimedia terminal interface, where a resistance value of the second resistor is greater than an internal resistance value of an audio and video terminal and smaller than an internal resistance value of a microphone terminal in reverse connection; the determining module identifies different types of transmission lines by using a voltage value measured by the voltage detecting module; and the control module is configured to implement adaptation of different transmission lines. The second resistor having a resistance value between the resistance value of the audio and video terminal and the resistance value of the microphone terminal in reverse connection is added on a device side. Therefore, a three-pole earphone, LRMG line-sequence earphone, LRGM line-sequence earphone, and audio and video data line may be accurately identified to implement adaptation for different earphones, thereby implementing compatibility between a device and different types of audio and video signal transmission lines.

    Audio signal output device
    8.
    发明公开
    Audio signal output device 审中-公开
    音频信号输出设备

    公开(公告)号：EP2645566A3

    公开(公告)日：2017-11-22

    申请号：EP13158826.1

    申请日：2013-03-12

    申请人： Funai Electric Co., Ltd.

    发明人： Taniguchi, Atushi ,  Otsuka, Shigeki ,  Hirai, Kota ,  Ito, Yuichi ,  Fujii, Takashi

    IPC分类号： H03G3/04 ,  H03G3/30 ,  H03G7/00 ,  H04N5/60

    CPC分类号： H03G3/20 ,  H03G3/04 ,  H03G3/3005 ,  H03G5/00 ,  H03G5/02 ,  H03G7/00 ,  H03G7/002 ,  H03G7/007 ,  H04N5/60 ,  H04N21/43632 ,  H04N21/439 ,  H04N21/4852

    摘要： This audio signal output device (1) includes an audio signal output portion (15), a volume setting information acquisition portion (15), and a control portion (10) acquiring maximum volume information (X max ) of volume information (X) of an audio signal of content. The control portion is configured to calculate the maximum output volume (Z max ) of an external device (2) on the basis of the maximum volume information of the content and volume setting information (Y) of the external device and perform control of lowering the output volume (Z) of the external device when the maximum output volume is higher than a prescribed volume threshold (Z limit ).

    摘要翻译： 该音频信号输出装置（1）包括音频信号输出部分（15），音量设置信息获取部分（15）以及控制部分（10），该音量信息输出部分获得音量信息（X）的最大音量信息（Xmax） 音频信号的内容。 控制部分被配置为基于外部设备的内容和音量设置信息（Y）的最大音量信息来计算外部设备（2）的最大输出音量（Zmax），并且执行降低输出 当最大输出量高于规定的音量阈值（Zlimit）时，外部设备的音量（Z）。