发明名称 |
Dynamic keystone correction |
摘要 |
An apparatus and method are disclosed for dynamic keystone correction. A measurement module measures distances from a projector to each of at least three projected points of a first projected image projected on a first surface with projection angles between each projected point. The at least three projected points are endpoints for at least two vectors with a target ratio of vector lengths. An adjustment module calculates an actual ratio of actual vector lengths of the at least two vectors. The adjustment module further adjusts a first aspect ratio of first projected image until the actual ratio is equivalent to the target ratio.
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申请公布号 |
US8534844(B2) |
申请公布日期 |
2013.09.17 |
申请号 |
US20110987639 |
申请日期 |
2011.01.10 |
申请人 |
WALTERMANN ROD D.;KELSO SCOTT EDWARDS;MESE JOHN CARL;PETERSON NATHAN J.;WEKSLER ARNOLD S.;LENOVO (SINGAPORE) PTE. LTD. |
发明人 |
WALTERMANN ROD D.;KELSO SCOTT EDWARDS;MESE JOHN CARL;PETERSON NATHAN J.;WEKSLER ARNOLD S. |
分类号 |
G03B21/14 |
主分类号 |
G03B21/14 |
代理机构 |
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代理人 |
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地址 |
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