System and method for projecting images onto a moving screen
First Claim
Patent Images
1. An image projection system for presenting an image to a viewer, comprising:
- a mechanically rotating screen that has an ascertainable position;
at least two projectors operable to project an image, each projector including a mask synchronously incorporated into the image, wherein the mask is a dynamic digital mask edited into the image; and
synchronization means between the rotating screen and the image such that the mask blocks from the viewer all of the image that is at any given moment extraneous to the rotating screen.
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Accused Products
Abstract
A shaped screen rotates through one or more projected images of two or more projectors operating simultaneously, resulting in a dynamic, kinetic image surface which may be viewed equally well from a plurality of angles, up to 360° horizontally. By utilizing at least two projectors, the resultant composite image on the rotating screen is not only optimally viewed from any angle, but it is also animated by the movement of the screen itself, as well as by any animation within the projected image.
14 Citations
19 Claims
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1. An image projection system for presenting an image to a viewer, comprising:
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a mechanically rotating screen that has an ascertainable position; at least two projectors operable to project an image, each projector including a mask synchronously incorporated into the image, wherein the mask is a dynamic digital mask edited into the image; and synchronization means between the rotating screen and the image such that the mask blocks from the viewer all of the image that is at any given moment extraneous to the rotating screen. - View Dependent Claims (2, 3, 4, 5)
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6. An image projection system for presenting an image to a viewer, comprising:
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a mechanically rotating screen that has an ascertainable position; at least two projectors operable to project an image, each projector including a mask synchronously incorporated into the image; synchronization means between the rotating screen and the image such that the mask blocks from the viewer all of the image that is at any given moment extraneous to the rotating screen; a control system connected to said at least two projectors; a constant-speed motor affixed to the rotating screen, wherein the motor includes a signal device operable to send an electrical pulse signal to the control system at each full revolution of the rotating screen; said control system programmed to begin projection and to start a timer associated with a preset program period, including a beginning and an end, after receiving a first electrical pulse signal from the signal device and to ignore each subsequent pulse signal until the timer reaches the end of the preset program period; and said control system programmed to pause projection when the timer reaches the end of the preset program period and to wait for a next pulse signal to resume projection, wherein a time interval between the end of the preset program period and the next pulse signal is sufficiently short such that a viewer perceives projection of each program to be continuous. - View Dependent Claims (7, 8, 9, 10, 11)
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12. An image projection system for presenting an image to a viewer, comprising:
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a mechanically rotating screen that has an ascertainable position; at least two projectors operable to project an image, each projector including a mask synchronously incorporated into the image; synchronization means between the rotating screen and the image such that the mask blocks from the viewer all of the image that is at any given moment extraneous to the rotating screen; a camera connected at an optical center of projection of each projector, the camera operable to record a projected image; said camera operable to send a recorded image to a central processing unit (CPU) connecting thereto, wherein the CPU is capable of determining a projective transformation matrix from the recorded image; said CPU connected to a signal processor operable to create a modified image from the recorded image according to the projective transformation matrix received from the CPU; and said signal processor operable to send the modified image to the projector, wherein the projector projects the modified image onto the screen. - View Dependent Claims (13, 14, 15, 16, 17)
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18. An image projection method for generating an image for viewing by viewer, comprising:
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rotating a screen that has an ascertainable position; projecting a distorted image including a synchronously-incorporated distorted mask caused by at least one of an adverse angle of projection and a rotating screen; recording the distorted image and mask at an optical center of projection on a recording medium using a camera; performing keystone distortion correction on the distorted image and mask using a signal processor connected to the camera; modifying the distorted image and mask to compensate for the keystone distortion; and projecting the modified image and mask onto the screen to produce a distortion free projected image; and controlling the timing of said projection steps through the use of a timing signal managed by a control computer such that the modified image and the rotating screen are synchronized resulting in the modified mask blocking from the viewer all of the image that is at any given moment extraneous to the rotating screen. - View Dependent Claims (19)
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Specification