Rear projection system with passive display screen
First Claim
Patent Images
1. A system comprising:
- a device comprising;
a processor;
a projector; and
a light emitter configured to emit non-visible light;
a display medium that is physically separate from the device, the display medium configured to;
receive images projected onto a rear surface of the display medium by the projector, causing the images to be displayed for viewing on a front surface of the display medium at a first brightness level, andallow non-visible light directed to the rear surface of the display medium to pass, at least in part, through the display medium to an environment in front of the front surface of the display medium; and
the device further comprising one or more computer-readable media storing computer-executable instructions that, when executed by the processor, cause the processor to perform acts comprising;
determining that the image has decreased from the first brightness level to a second brightness level that is less than the first brightness level;
based at least partly on the image decreasing from the first brightness level to the second brightness level, causing an additional instance of the image to be projected onto the rear surface of the display medium;
detecting, based at least in part on an interaction of a user of the display medium with the non-visible light passed through to the environment, one or more gestures made by the user;
determining one or more operations to be performed based on the one or more gestures; and
performing at least one operation of the one or more operations.
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Accused Products
Abstract
Described herein are systems and techniques for projecting content, periodically or continuously, onto a rear surface of a display medium from behind. The rear projected image is presented on an opposing or front surface of the display medium to a human audience for viewing. Additionally, non-visible light (e.g., IR light) is passed through the display medium to an area in front of the medium. The non-visible light is used to detect human gestures. In this manner, the rear projection arrangement avoids viewer obstruction during projection, yet detects and recognizes gestures made by the viewer in front of the display medium.
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Citations
22 Claims
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1. A system comprising:
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a device comprising; a processor; a projector; and a light emitter configured to emit non-visible light; a display medium that is physically separate from the device, the display medium configured to; receive images projected onto a rear surface of the display medium by the projector, causing the images to be displayed for viewing on a front surface of the display medium at a first brightness level, and allow non-visible light directed to the rear surface of the display medium to pass, at least in part, through the display medium to an environment in front of the front surface of the display medium; and the device further comprising one or more computer-readable media storing computer-executable instructions that, when executed by the processor, cause the processor to perform acts comprising; determining that the image has decreased from the first brightness level to a second brightness level that is less than the first brightness level; based at least partly on the image decreasing from the first brightness level to the second brightness level, causing an additional instance of the image to be projected onto the rear surface of the display medium; detecting, based at least in part on an interaction of a user of the display medium with the non-visible light passed through to the environment, one or more gestures made by the user; determining one or more operations to be performed based on the one or more gestures; and performing at least one operation of the one or more operations. - View Dependent Claims (2, 3, 4, 5)
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6. A system comprising:
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a passive display medium having a front surface and a rear surface, the passive display medium configured to; depict images on the front surface, and allow non-visible light directed to the back surface to pass, at least in part, through the passive display medium to an environment in front of the front surface of the passive display medium; a projector, that is physically separate from the passive display medium, to; project images to the rear surface of the passive display medium, the images that are projected causing the images to be displayed for viewing on the front surface of the passive display medium at a first brightness level that decreases over time; and based at least partly on a determination that the first brightness level has decreased to a second brightness level, project an additional instance of the images to the rear surface of the passive display medium; and an interaction detection component configured to detect and interpret human interaction with the non-visible light passed through to the environment. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method comprising:
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projecting, by a device, light onto a rear surface of a display medium that, upon receiving the light, is configured to display an image on a front surface of the display medium; directing, by the device, non-visible light at least in part through the display medium to an environment in front of the front surface of the display medium; based at least partly on an expiration of a pre-determined period of time, projecting an additional instance of the light onto the rear surface of the display medium; and detecting, by the device and based at least in part on an interaction of a user of the display medium with the non-visible light passed through to the environment, one or more gestures made by the user. - View Dependent Claims (19, 20, 21, 22)
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Specification