Invention Grant
US09021151B2 Circuit and method of control of DDC data transmission for video display device
有权
用于视频显示设备的DDC数据传输控制电路及方法
- Patent Title: Circuit and method of control of DDC data transmission for video display device
- Patent Title (中): 用于视频显示设备的DDC数据传输控制电路及方法
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Application No.: US12530300Application Date: 2008-04-24
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Publication No.: US09021151B2Publication Date: 2015-04-28
- Inventor: Masaya Yagi
- Applicant: Masaya Yagi
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2007-121837 20070502
- International Application: PCT/JP2008/058316 WO 20080424
- International Announcement: WO2008/139944 WO 20081120
- Main IPC: G06F3/00
- IPC: G06F3/00 ; G09G5/00
Abstract:
A video processing device includes a connecting unit that is connected to an external apparatus via an interface including a HPD line and a DDC line, a memory that stores EDID, with the EDID being transmitted via the DDC line; and a control unit that performs a predetermined process for resetting a state of the HPD line if a predetermined error relating to a transmission of EDID is detected. The control unit changes a state of the video processing device to a power off state if a number of times that the predetermined process is performed is not less than a predetermined value.
Public/Granted literature
- US20100103272A1 CIRCUIT AND METHOD OF CONTROL OF DDC DATA TRANSMISSION FOR VIDEO DISPLAY DEVICE Public/Granted day:2010-04-29
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