INTERACTIVE DISPLAY DEVICE AND METHOD, USING A DETECTION CAMERA AND OPTICAL POINTER
First Claim
1. An interactive display device comprising:
- a screen (24),a video projector (4) capable of projecting an image to the screen (24),an optical pointer (26) comprising a mouse-click signal inputting button and a light source (33) capable of emitting a pointing light beam toward the screen to form a light mark (15) on the screen (24),a detection camera (11) capable of acquiring an image of the screen and of detecting an image of the light mark,a processing system (27) capable of generating a light mark detection signal and of calculating the position of the light mark (15) in the detected image,characterized in that;
the optical pointer (26) comprises, on the one hand, a contact or proximity detector capable of detecting a contact or a proximity between an end of the optical pointer (26) and the screen (24), and of generating a light mark presence signal and, on the other hand, a radio transmitter (29),the processing system (27) comprises a radio receiver (28),the radio transmitter (29) being capable of transmitting to the radio receiver (28), on the one hand, a signal of validation of a mouse-click signal emitted by the optical pointer and, on the other hand, a light mark presence signal,the processing system (27) being capable of deducing a signal of validation of said light mark from the combination of the light mark detection signal and the light mark presence signal.
1 Assignment
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Accused Products
Abstract
In an interactive display device and method, a video projector projects an image on a screen. An optical pointer includes a mouse click signal input button and a light source emitting a light beam for pointing to the screen to form a light mark. A detection camera acquires an image from the screen and detects an image from the light mark. A processing system calculates the position of the light mark in the detected image. The optical pointer includes: a contact or proximity detector capable of detecting a contact between one end of the optical pointer and the screen and generating a light mark presence signal; and moreover a radio transmitter capable of transmitting a light mark presence signal to a processing system. The treatment system compared the respective signals for detecting a light mark and light mark presence to deduce therefrom a validation signal for the light mark.
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Citations
20 Claims
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1. An interactive display device comprising:
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a screen (24), a video projector (4) capable of projecting an image to the screen (24), an optical pointer (26) comprising a mouse-click signal inputting button and a light source (33) capable of emitting a pointing light beam toward the screen to form a light mark (15) on the screen (24), a detection camera (11) capable of acquiring an image of the screen and of detecting an image of the light mark, a processing system (27) capable of generating a light mark detection signal and of calculating the position of the light mark (15) in the detected image, characterized in that; the optical pointer (26) comprises, on the one hand, a contact or proximity detector capable of detecting a contact or a proximity between an end of the optical pointer (26) and the screen (24), and of generating a light mark presence signal and, on the other hand, a radio transmitter (29), the processing system (27) comprises a radio receiver (28), the radio transmitter (29) being capable of transmitting to the radio receiver (28), on the one hand, a signal of validation of a mouse-click signal emitted by the optical pointer and, on the other hand, a light mark presence signal, the processing system (27) being capable of deducing a signal of validation of said light mark from the combination of the light mark detection signal and the light mark presence signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 14, 15, 16, 17, 18, 19, 20)
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8. An interactive display method comprising the following steps of:
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projecting to a screen (24) a video image coming from a video projector (4), emitting a pointing light beam toward the screen (24) to form a light mark (15) on this screen by means of an optical pointer (26) comprising a mouse-click signal inputting button, acquiring an image of the projection screen and detecting an image of the light mark (15), calculating the position of the light mark (15) in the detected image and generating a light mark detection signal, characterized in that it comprises the following steps of; detecting a contact or a proximity between an end of the optical pointer (26) and the screen (24), transmitting a light mark presence signal by means of a radio link (29) between the optical pointer (26) and the processing system (27), comparing the respective signals of light mark presence and light mark detection to generate a signal of validation of said light mark or a signal of device operation anomaly. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification