| 发明名称 | Image display apparatus and portable information processing apparatus having the same | ||
| 摘要 | An image display apparatus improves usability for a user in the case where a screen image is projected on a ceiling as a screen. The image display apparatus includes: a projection unit capable of vertically changing a projection angle; a projection angle detector detecting the projection angle of the projection unit; and a screen image corrector reversing a projected screen image. The screen image corrector switches the projected screen image from a reversed display to a standard display when the projection angle detected by the projection angle detector is less than or equal to a predetermined value. | ||
| 申请公布号 | US8840252(B2) | 申请公布日期 | 2014.09.23 |
| 申请号 | US201213361402 | 申请日期 | 2012.01.30 |
| 申请人 | Panasonic Corporation | 发明人 | Shiramizu Takahisa;Yasuda Kazutaka;Ooie Takayuki |
| 分类号 | G03B21/00;G03B21/14;H04N5/238;G06F1/16;G02B27/00;G02F1/13;G02B6/42;G03B21/30;H04N5/74;H04N9/31;G03B27/68;G03B29/00;G03B21/20 | 主分类号 | G03B21/00 |
| 代理机构 | Greenblum & Bernstein, P.L.C. | 代理人 | Greenblum & Bernstein, P.L.C. |
| 主权项 | 1. An image display apparatus comprising: a projection unit capable of vertically changing a projection angle; a projection angle detector detecting the projection angle of the projection unit; and a screen image corrector reversing a projected screen image wherein the screen image corrector switches the projected screen image from a reversed display to a standard display when the projection angle detected by the projection angle detector is less than or equal to a predetermined value, wherein the image display apparatus has a standard display mode displaying a screen image in a non-reversed state and a reversed display mode displaying a screen image in a reversed state, the standard display mode and the reversed display mode being instructed by a user. | ||
| 地址 | Osaka JP | ||