PROJECTION SYSTEM

• US 20120050698A1
• Filed: 08/19/2011
• Published: 03/01/2012
• Est. Priority Date: 08/25/2010
• Status: Active Grant

• Current Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Original Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Inventors: Kotani, Junji
• Granted Patent: US 8,550,635 B2
• Time in Patent Office: Days
• US Class Current: 353/94
• CPC Class Codes: G03B 21/14 Details
• CPC Class Codes: G03B 21/26 Projecting separately subsidiary matter simultaneously with main image
• CPC Class Codes: G03B 21/53 Means for automatic focusing, e.g. to compensate thermal effects
• CPC Class Codes: H04N 9/3147 Multi-projection systems displays in general H04N9/12; video walls G06F3/1446, G09G2300/026
• CPC Class Codes: H04N 9/317 Convergence or focusing systems electronic adjustment of convergence H04N9/3185; convergence or focusing arrangements for cathode ray tubes H04N9/28; means for automatic focusing of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/53
• CPC Class Codes: H04N 9/3194 including sensor feedback

Abstract

A projection system includes a plurality of projection apparatuses. Each of the plurality of projection apparatuses includes a projection unit configured to project an image onto a projection surface, and an adjusting unit configured to adjust a state of displaying an image projected onto the projection surface by the projection unit. The projection system further includes a controller configured to cause the projection units of the plurality of projection apparatuses to simultaneously project a test image in different forms. The controller controls the adjusting unit of the plurality of projection apparatuses to adjust a state of displaying an image projected on the projection surface by the projection unit based on each state of displaying of the test images in different forms.

Claims

1. A projection system comprising a plurality of projection apparatuses, wherein each of the plurality of projection apparatuses comprises:

a projection unit configured to project an image onto a projection surface; and

an adjusting unit configured to adjust a state of displaying an image projected onto the projection surface by the projection unit, wherein the projection system further comprises;

a controller configured to cause the projection units of the plurality of projection apparatuses to simultaneously project test images in different forms,

wherein the controller controls the adjusting unit of each of the plurality of projection apparatuses to adjust a state of displaying an image projected onto the projection surface by the projection unit based on each state of displaying of the test images in different forms.

2. The projection system according to claim 1, wherein the adjusting unit adjusts a focus, sharpness, a projection range, or a zoom rate of the projection unit.

3. The projection system according to claim 1, wherein the adjusting unit further includes a focusing lens, a zoom lens and an image processing unit.

4. The projection system according to claim 1, wherein the controller is incorporated into one of the plurality of projection apparatuses.

5. The projection system according to claim 1, wherein the test images in different forms are those in different colors, those in different polarization states, or those in different positions.

6. A projection apparatus comprising:

a projection unit configured to project an image onto a projection surface;

an adjusting unit configured to adjust a state of displaying an image projected onto the projection surface by the projection unit;

an obtaining unit configured to acquire information concerning a state of displaying an image projected onto the projection surface;

a communication unit configured to communicate with another projection apparatus; and

a controller configured to control the projection unit such that the projection unit projects a test image in a first format, and to instruct the another projection apparatus to project a test image in a second format differing from the first format simultaneously with projection of the test image in the first format,

wherein the controller controls the adjusting unit to adjust a state of displaying an image projected onto the projection surface by the projection unit, based on the state of displaying the image in the first format acquired by the obtaining unit.

7. The projection apparatus according to claim 6, wherein the adjusting unit adjusts a focus, sharpness, a projection range, or a zoom rate of the projection unit.

8. The projection apparatus according to claim 6, wherein the adjusting unit further includes a focusing lens, a zoom lens and an image processing unit.

9. The projection apparatus according to claim 6, wherein the test images indifferent forms are those indifferent colors, those in different polarization states, or those in different positions.

10. The projection apparatus according to claim 6, wherein the controller instructs the other projection apparatus to adjust a state of displaying an image projected onto the projection surface.

11. A projection system comprising a plurality of projection apparatuses, wherein each of the plurality of projection apparatuses comprises:

a projection unit configured to project an image onto a projection surface; and

an adjusting unit configured to adjust a state of displaying an image projected onto the projection surface by the projection unit, wherein the projection system further comprises;

a controller configured to cause the projection unit of the plurality of projection apparatuses to project test images in different forms, respectively,

wherein the controller causes, in a state in which the projection unit of a first projection apparatus is displaying the test image, the projection unit of the projection apparatus other than the first projection apparatuses to project the test image, and

wherein the controller controls the adjusting unit of each of the plurality of projection apparatuses to adjust a state of displaying an image projected onto the projection surface by the projection unit based on each state of displaying of the test images in different forms.

12. The projection system according to claim 11, wherein the adjusting unit adjusts a focus, sharpness, a projection range, or a zoom rate of the projection unit.

13. The projection system according to claim 11, wherein the adjusting unit includes a focusing lens, a zoom lens and an image processing unit.

14. The projection system according to claim 11, wherein the controller is incorporated into one of the plurality of projection apparatuses.

15. The projection system according to claim 11, wherein the test images indifferent forms are those indifferent colors, those in different polarization states, or those in different positions.

16. A projection apparatus comprising:

a projection unit configured to project an image onto a projection surface;

an adjusting unit configured to adjust a state of displaying an image projected onto the projection surface by the projection unit;

an obtaining unit configured to acquire information concerning a state of displaying an image projected onto the projection surface;

a communication unit configured to communicate with another projection apparatus; and

a controller configured to control the projection unit such that the projection unit projects a test image in a first format, and to instruct the another projection apparatus to project a test image in a second format differing from the first format in a state in which the test image in the first format is projected, and

wherein the controller controls the adjusting unit to adjust a state of displaying an image projected onto the projection surface by the projection unit, based on the state of displaying the test image in the first format acquired by the obtaining unit.

17. The projection system according to claim 16, wherein the adjusting units adjusts a focus, sharpness, a projection range, or a zoom rate of the projection unit.

18. The projection system according to claim 16, wherein the adjusting unit further includes a focusing lens, a zoom lens and an image processing unit.

19. The projection system according to claim 16, wherein the test images indifferent forms are those indifferent colors, those in different polarization states, or those in different positions.

20. The projection system according to claim 16, wherein the controller instructs the other projection apparatus to adjust a state of displaying an image projected onto the projection surface.