| 发明名称 | Positional input systems and methods | ||
| 摘要 | Positional input systems and methods are provided. A positional input method can include passing (210) a polarized light generated by a source through a predetermined pattern of visibly transparent polarizing elements disposed on the surface of a display device. The method further includes detecting (220) a change in the polarization state of the polarized light corresponding to a location on the display device. | ||
| 申请公布号 | US9223166(B2) | 申请公布日期 | 2015.12.29 |
| 申请号 | US201113980884 | 申请日期 | 2011.09.16 |
| 申请人 | Hewlett-Packard Development Company, L.P. | 发明人 | Thomas, III Fred Charles |
| 分类号 | G02F1/1333;G06F3/03;G02F1/1335 | 主分类号 | G02F1/1333 |
| 代理机构 | Hewlett-Packard Patent Department | 代理人 | Hewlett-Packard Patent Department |
| 主权项 | 1. A positional input method, comprising: passing a polarized light generated by a source through a predetermined pattern of visibly transparent polarizing elements disposed on a surface of a display; detecting a change in the polarization state of the polarized light corresponding to a location on the surface; positioning the source external to the display; generating a circularly polarized light using the source; and reflecting at least a portion of the circularly polarized light from the surface. | ||
| 地址 | Houston TX US | ||