Projection apparatus and control method thereof

A projection apparatus, comprising:

• a screen, a reel, a projection display structure and a control assembly, wherein,
• the projection display structure is configured to sequentially project a plurality of images to be displayed, wherein each image to be displayed includes an optical image with content, and optical images with content in at least two images to be displayed are different;
• the screen is configured to display at least one optical image with content in the plurality of images to be displayed;
• the control assembly is connected to the reel and is configured to control the reel to rotate;
• the reel is connected to the screen and is configured to drive the screen to be unfolded from or wound on the reel when rotating;
• and
• the control assembly is further connected to the projection display structure;
• and the control assembly is further configured to:
• control the projection display structure to project the optical image with content in the image to be displayed onto an unfolded portion of the screen, and control a region corresponding to the optical image with content in the image to be displayed projected by the projection display structure to change as the unfolded portion of the screen changes, and
• the control assembly is further configured to obtain a current movement parameter of the screen, and adjust a frequency of projecting the plurality of images to be displayed according to the current movement parameter of the screen, so as to make regions corresponding to optical images with content in the plurality of images to be displayed match a current unfolded portion of the screen.

A projection apparatus, comprising:

• a screen, a reel, a projection display structure and a control assembly, wherein,
• the projection display structure is configured to sequentially project a plurality of images to be displayed, wherein each image to be displayed includes an optical image with content, and optical images with content in at least two images to be displayed are different;
• the screen is configured to display at least one optical image with content in the plurality of images to be displayed;
• the control assembly is connected to the reel and is configured to control the reel to rotate;
• the reel is connected to the screen and is configured to drive the screen to be unfolded from or wound on the reel when rotating;
• and
• the control assembly is further connected to the projection display structure;
• and the control assembly is further configured to:
• control the projection display structure to project the optical image with content in the image to be displayed onto an unfolded portion of the screen, and control a region corresponding to the optical image with content in the image to be displayed projected by the projection display structure to change as the unfolded portion of the screen changes, and
• the control assembly is configured with a preset movement parameter of the screen, and the control assembly is further configured to obtain a current movement parameter of the screen, and select an image to be displayed that an optical image with content therein matches a current unfolded portion of the screen to project according to the current movement parameter.