发明授权
US08451280B2 Display control device having a frame buffer for temporarily storing image data to be displayed on either one of a first display device or a second display device
有权
具有用于临时存储要显示在第一显示装置或第二显示装置中的任一个上的图像数据的帧缓冲器的显示控制装置
- 专利标题： Display control device having a frame buffer for temporarily storing image data to be displayed on either one of a first display device or a second display device
- 专利标题（中）： 具有用于临时存储要显示在第一显示装置或第二显示装置中的任一个上的图像数据的帧缓冲器的显示控制装置
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申请号： US12989501申请日： 2009-04-23
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公开(公告)号： US08451280B2公开(公告)日： 2013-05-28
- 发明人: Toshiyuki Ishioka
- 申请人： Toshiyuki Ishioka
- 申请人地址： JP Osaka
- 专利权人： Panasonic Corporation
- 当前专利权人： Panasonic Corporation
- 当前专利权人地址： JP Osaka
- 代理机构： Wenderoth, Lind & Ponack, L.L.P.
- 优先权： JP2008-118154 20080430
- 国际申请： PCT/JP2009/001872 WO 20090423
- 国际公布： WO2009/133675 WO 20091105
- 主分类号： G09G5/393
- IPC分类号： G09G5/393 ; G09G5/39 ; G09G5/395
摘要：
A display control device (1) comprises: a plurality of display devices (16a) and (16b); a display output section (18) which supplies image data to the display devices (16a) and (16b); a frame buffer (22) which temporarily stores the image data; and a buffer control section (24) which controls the frame buffer (22). The display output section (18) transmits the image data stored in the frame buffer (22) to the plurality of display devices (16a) and (16b), and reads, from an image data storage section (12), image data not stored in the frame buffer (22), so as to transmit the read image data to the display devices (16a) and (16b), and to write the read image data in the frame buffer (22). The buffer control section (24) is configured to prevent that image data, which are stored in the frame buffer (22) and which are not yet read, are overwritten by the image data read from the image data storage section (12). Thereby, it is possible to reduce the amount of memory access at low cost.
公开/授权文献
- US20110037773A1 DISPLAY CONTROL DEVICE AND DISPLAY CONTROL METHOD 公开/授权日：2011-02-17
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