发明申请
- 专利标题： DISPLAY DEVICE
- 专利标题（中）： 显示设备
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申请号： US11916041申请日： 2006-05-22
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公开(公告)号： US20090051827A1公开(公告)日： 2009-02-26
- 发明人: Toshifumi Yokoyama , Ken'ichi Kasazumi , Shin-ichi Kadowaki , Kiminori Mizuuchi , Hiroyuki Furuya , Kazuhisa Yamamoto
- 申请人： Toshifumi Yokoyama , Ken'ichi Kasazumi , Shin-ichi Kadowaki , Kiminori Mizuuchi , Hiroyuki Furuya , Kazuhisa Yamamoto
- 申请人地址： JP Kadoma-shi, Osaka
- 专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址： JP Kadoma-shi, Osaka
- 优先权： JP2005-158702 20050531
- 国际申请： PCT/JP2006/310172 WO 20060522
- 主分类号： H04N9/31
- IPC分类号： H04N9/31
摘要：
A display device (100) of the present invention has a first switch (3) and a second switch (4) on an upper surface of its casing, and includes a control circuit (18) for controlling the first switch (3) and the second switch (4) and a light source (19) inside the casing. The control circuit (18) performs control so that the light source (19) is turned on when the second switch (4) is pressed after a predetermined period of time has passed from when the first switch (3) was pressed. Thereby, the display device (100) of the present invention prevents entering of a person into a projection area before projection of video, and controls inadvertent start-up.
公开/授权文献
- US08152314B2 Display device 公开/授权日：2012-04-10