Projection-type display apparatus with a keystone correction feature for correcting keystone distortion in a projection image

摘要

A projection-type display apparatus includes a setting unit configured to set a vertical keystone correction value used to correct a vertical distortion of a projection image and a horizontal keystone correction value used to correct a horizontal distortion of the projection image, and an image generator configured to generate an image representing a current vertical keystone correction value and a current horizontal keystone correction value that are set by the setting unit, and a settable range of each of the vertical keystone correction value and the horizontal keystone correction value from the current vertical keystone correction value and the current horizontal keystone correction value.

主权项

1. A projection-type display apparatus comprising:
a setting unit configured to set a vertical keystone correction value used to correct a vertical distortion of a projection image and a horizontal keystone correction value used to correct a horizontal distortion of the projection image; and an image generator configured to generate an image that includes:
a current vertical keystone correction value and a current horizontal keystone correction value that are set by the setting unit;first settable range within which the setting unit is permitted to vary the vertical keystone correction value based on the current vertical keystone correction value and the current horizontal keystone correction value, and outside of which the setting unit is not permitted to vary the vertical keystone correction value based on the current vertical keystone correction value and the current horizontal keystone correction value;a second settable range within which the setting unit is permitted to vary the horizontal keystone correction value based on the current vertical keystone correction value and the current horizontal keystone correction value, and outside of which the setting unit is not permitted to vary the horizontal keystone correction value based on the current vertical keystone correction value and the current horizontal keystone correction value;a first maximum range for the vertical keystone correction value, within which the first settable range falls, that is variable as the horizontal keystone correction value is varied and that is equal to the first maximum range when the horizontal distortion is not corrected; anda second maximum range for the horizontal correction value, within which the second settable range falls, that is variable as the vertical keystone correction value is varied and that is equal to the second maximum range when the vertical distortion is not corrected.