Projector and projection image correction method thereof

Details Projector and projection image correction method thereof Projector and projection image correction method thereof

2006-12-19

2006-12-19

Perkey, W. B. (Department: 2851)

Optics: image projectors

Distortion compensation

C353S070000, C353S030000, C348S746000

Reexamination Certificate

active

07150536

ABSTRACT:
A transformation coefficient storing unit has correction tables which are generated based on classification of zooming magnification in a manner of arithmetic progression. An optical mechanism unit supplies information on a zooming magnification Z to a switch control unit of the transformation coefficient storing unit. The switch control unit controls a table selection unit to select any from the correction tables based on the zooming magnification Z. The transformation coefficient storing unit selects a coefficient set from the selected correction table based on inclination angles θH and θV and supplies the selected coefficient set to a trapezoidal correction unit. The trapezoidal correction unit performs trapezoidal correction based on the supplied coefficient set.

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