Projector, trapezoidal distortion correction method, and storage medium storing trapezoidal distortion correction program

摘要

A projector includes a projection unit to project an image on a screen; an angle detector to detect shaking of the projection unit; and a trapezoidal distortion correction unit to conduct automatic trapezoidal distortion correction of the image displayed on the screen based on an inclination angle of the projection unit detected by the angle detector, and to enable manual trapezoidal distortion correction of the image displayed on the screen. When the manual trapezoidal distortion correction is conducted after the automatic trapezoidal distortion correction, the trapezoidal distortion correction unit determines whether an angle deviation of the inclination angle exceeds for a given threshold angle for a given time period. When the trapezoidal distortion correction unit determines that the angle deviation exceeds the given threshold angle, the automatic trapezoidal distortion correction is conducted again.

主权项

1. A projector, comprising:
correction circuitry to conduct automatic trapezoidal distortion correction of an image displayed on a screen disposed vertically based on an inclination angle of a projection unit detected by an angle detector, and to enable manual trapezoidal distortion correction of the image displayed on the screen based on a physical setting of the inclination angle of the projection unit, wherein, after the manual trapezoidal distortion correction is conducted subsequent to the automatic trapezoidal distortion correction, the automatic trapezoidal distortion correction is not conducted again using the correction circuitry, when a time period after conducting the manual trapezoidal distortion correction is within a given time period, and when a detected angle deviation from the set inclination angle of the projection unit for the manual trapezoidal correction is at or below a threshold inclination angle, and wherein, after the manual trapezoidal correction is conducted subsequent to the automatic trapezoidal distortion correction, the automatic trapezoidal distortion correction is conducted again based on the detected angle deviation, using the correction circuitry, when a time period after conducting the manual trapezoidal distortion correction exceeds the given time period, and when the detected angle deviation is greater than the threshold inclination angle.