Projection apparatus, projection method and recording medium recording the projection method
AssigneeCasio Computer Co., Ltd.
InventorTakashi Akutsu
Life of this patent
Estimating the term…
Abstract
A projection apparatus comprising a projection section for projecting an image corresponding to an input image signal, a distance measuring section for measuring each distance of several positions on an image projection plane made by the projection section, a focus control section for making keystone correction on an image projected by the projection section so that a projection image is formed into a rectangular shape having a proper aspect ratio based on each distance obtained by the distance measuring section while controlling a focus position of the image projected by the projection section, and a control section for instructing to carry out processing by the focus control section.
Claims10
A projection apparatus comprising:
- a projection section for projecting an image corresponding to an input image signal;
- a distance measuring section for measuring respective distances to positions on an image projection plane made by the projection section;
- a keystone correction section for performing keystone correction on an image projected by the projection section so that the projected image is formed into a rectangular shape having a proper aspect ratio, based on the distances obtained by the distance measuring section;
- a focus control section for controlling a focus position of the image projected by the projection section based on at least one of the distances obtained by the distance measuring section;
- a control section for issuing an instruction to carry out processings by the distance measuring section, the keystone correction section and the focus control section;
- and
- a temperature sensing section for sensing a temperature of a light source lamp of the projection section;
- wherein the control section automatically issues the instruction when the temperature sensing section detects that the temperature of the lamp is more than a predetermined value after vower of the apparatus is turned on.
A projection apparatus comprising
- a projection section for projecting an image corresponding to an input image signal;
- a distance measuring section for measuring respective distances to positions on an image projection plane made by the projection section;
- a keystone correction section for performing keystone correction on an image projected by the projection section so that the projected image is formed into a rectangular shape having a proper aspect ratio, based on the distances obtained by the distance measuring section;
- a focus control section for controlling a focus position of the image projected by the projection section based on at least one of the distances obtained by the distance measuring section;
- and
- a control section for issuing an instruction to carry out processings by the distance measuring section, the keystone correction section and the focus control section;
- wherein the instruction is issued by the control section when it is determined that a predetermined period of time has elapsed after power of the apparatus is turned on.
A projection apparatus comprising:
- a projection section for projecting an image corresponding to an input image signal;
- a distance measuring section for measuring respective distances to positions on an image projection plane made by the projection section;
- a keystone correction section for performing keystone correction on an image projected by the projection section so that the projected image is formed into a rectangular shape having a proper aspect ratio, based on the distances obtained by the distance measuring section;
- a focus control section for controlling a focus position of the image projected by the projection section based on at least one of the distances obtained by the distance measuring section;
- a control section for issuing an instruction to carry out processings by the distance measuring section, the keystone correction section and the focus control section;
- a luminance sensing section for sensing a luminance of a light source lamp of the projection section;
- wherein the instruction is issued by the control section when the luminance sensing section detects that the luminance of the lamp is more than a predetermined value after a power of the apparatus is turned on.
Dependencies are inferred from the claim text.