Projection display apparatus and method of controlling the same

摘要

A projection display apparatus includes an image projecting unit projecting an image, an operation unit as an operation device whose output value changes depending on the amount of operation, a correction amount setting unit changing a keystone correction amount in accordance with an output value of the operation unit, and a keystone correcting unit performing keystone correction on an image to be projected in accordance with the keystone correction amount. A zero reference position in which the keystone correction amount is zero is set in an operation range of the operation unit. The correction amount setting unit sets a dead zone in the operation range such that the dead zone includes the zero reference position and an area surrounding this position, and sets the keystone correction amount to zero in accordance with the output value corresponding to the inside of the dead zone.

主权项

1. A projection display apparatus comprising:
an image projecting unit that projects an image; an operation unit whose output value changes depending on an amount of manual operation; a correction amount setting unit that changes a keystone correction amount in accordance with an output value of the operation unit; and a keystone correcting unit that performs horizontal keystone correction on an image to be projected in accordance with the keystone correction amount, wherein a zero reference position in which the keystone correction amount is zero is set within an operation range of the operation unit, a dead zone, which includes the zero reference position and an area surrounding the zero reference position is set within the operation range of the operation unit, the correction amount setting unit sets the keystone correction amount to zero in accordance with the output value corresponding to the inside of the dead zone, and the projection display apparatus enters a non-adjustment mode when the operation unit is not operated for a period of time, and in the non-adjustment mode, when the operation unit is in a position outside of the dead zone, keystone correction is not changed unless a change in the output value of the operation unit exceeds a threshold.