公开(公告)号：US20140002748A1

公开(公告)日：2014-01-02

申请号：US13914717

申请日：2013-06-11

Applicant: Hitachi, Ltd.

Inventor： Nobuaki KABUTO ,  Yasutaka TSURU ,  Yuya OGI

IPC: H04N5/38

CPC classification number: H04N5/38 ,  G09G5/006 ,  G09G2370/045 ,  G09G2370/047 ,  G09G2370/12 ,  G09G2370/16 ,  H04N13/161 ,  H04N13/172 ,  H04N13/194 ,  H04N19/61 ,  H04N21/43635 ,  H04N21/43637

Abstract: A video transmitting apparatus including: a first register that is set when receiving a CEC (Consumer Electronics Control) message which is transmitted by a video signal source and is reset in response to a leading edge of a predetermined voltage that is supplied from said video signal source; and a second register which reads an EDID (Extended Display Identification Data) of a video displaying apparatus, is set when a decision is made that said video displaying apparatus is a predetermined video displaying apparatus, and is reset when a state where an HPD (Hot Plug Detect) is in a state of low has continued for a predetermined period of time or longer, wherein when both of said first and second registers have been set, a determination is made that said video signal source, said video transmitting apparatus, and said video displaying apparatus have been connected.

Abstract translation: 一种视频发送装置，包括：第一寄存器，当接收到由视频信号源发送的CEC（消费者电子控制）消息时被设置，并且响应于从所述视频信号提供的预定电压的前沿而被复位 资源; 并且当作出所述视频显示装置是预定的视频显示装置的决定时，设置读取视频显示装置的EDID（扩展显示标识数据）的第二寄存器，并且当HPD（Hot 插头检测）处于低电平的状态持续预定时间段或更长时间，其中当已经设置了所述第一和第二寄存器两者时，确定所述视频信号源，所述视频发送设备和所述视频发送设备 视频显示装置已连接。