Interactive display system, tool for use with the system, and tool management apparatus
First Claim
1. An interactive display system comprising:
- a waveguide that comprises;
an interface surface configured to be engaged by a user with an object;
andan underlayer having a first index of refraction and being disposed between layers of the waveguide having indices of refraction that are less than the first index of refraction; and
one or more photosensitive detectors in optical communication with the underlayer to receive electromagnetic radiation therefrom, the plurality of photosensitive detectors generating one or more output signals, a given one of the one or more output signals being related to an amount of electromagnetic radiation received from the underlayer by the corresponding one of the one or more photosensitive detectors that generated the given output signal,wherein the waveguide and the plurality of photosensitive detectors are configured such that electromagnetic radiation emanating from the object into the waveguide is guided by total internal reflection within the underlayer to the one or more photosensitive detectors such that information related to the position of the object with respect to the interface surface can be determined as a function of the one or more output signals.
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Accused Products
Abstract
An interactive display system that may be implemented to provide an electronic whiteboard that enables users to input information to the system by engaging a display with one or more objects. The system may present an image via the display that reflects the inputs received from the user. For example, the display may be dynamically updated to mimic inputs made to a whiteboard by the user via one or more pens and/or an eraser. The interactive display system may implement an underlayer embedded within the display to guide electromagnetic radiation that emanates from an object engaged with the display to one or more detectors by total internal reflection. Due at least in part to the efficiency of the underlayer in guiding the electromagnetic radiation to the detectors, the interactive display system may enhance the speed and/or accuracy of the interpretation of the inputs made by the user.
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Citations
41 Claims
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1. An interactive display system comprising:
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a waveguide that comprises; an interface surface configured to be engaged by a user with an object; and an underlayer having a first index of refraction and being disposed between layers of the waveguide having indices of refraction that are less than the first index of refraction; and one or more photosensitive detectors in optical communication with the underlayer to receive electromagnetic radiation therefrom, the plurality of photosensitive detectors generating one or more output signals, a given one of the one or more output signals being related to an amount of electromagnetic radiation received from the underlayer by the corresponding one of the one or more photosensitive detectors that generated the given output signal, wherein the waveguide and the plurality of photosensitive detectors are configured such that electromagnetic radiation emanating from the object into the waveguide is guided by total internal reflection within the underlayer to the one or more photosensitive detectors such that information related to the position of the object with respect to the interface surface can be determined as a function of the one or more output signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A tool that is configured to input information to an interactive electronic display that implements optical detection to determine information related to the position of the tool, the tool comprising:
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one or more emitters configured to emit electromagnetic radiation; a controller that controls the emitters to modify one or more properties of the electromagnetic radiation emitted by the emitters; and a receiver that receives control information for the controller, wherein the controller is configured to control the emitters to modify one or more properties of the electromagnetic radiation emitted by the emitters in accordance with the control information received by the receiver. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A tool management apparatus that provides control information to one or more tools, the one or more tools being configured to input information to an electronic whiteboard system that implements optical detection to determine information related to the position of the tool, the control information including information that dictates one or more of properties of electromagnetic radiation emitted by the one or more tools to input information to the electronic whiteboard, the apparatus comprising:
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a tool module that determines information that dictates one or more properties of electromagnetic radiation emitted by the one or more tools; and a transmitter that transmits the information that dictates the one or more properties of electromagnetic radiation emitted by the one or more tools to the one or more tools. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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29. A tool that is configured to input information to an interactive electronic display that implements optical detection to determine information related to the position of the tool, the tool comprising:
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an attitude detector that determines a positional attitude of the tool; one or more emitters configured to emit electromagnetic radiation; and a controller that controls the one or more emitters to modify one or more properties of the electromagnetic radiation emitted by the emitters based on the positional attitude of the tool determined by the attitude detector. - View Dependent Claims (30, 31, 32)
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33. An interactive display system comprising:
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a waveguide that provides an interface surface configured to be engaged by a user with an object; one or more photosensitive detectors in optical communication with the waveguide to receive electromagnetic radiation therefrom, the one or more photosensitive detectors generating one or more output signals, a given one of the one or more output signals being related to one or more properties of the electromagnetic radiation received from the waveguide by the photosensitive detector that generated the given output signal; and a processor that receives the output signals generated by the plurality of photosensitive detectors, wherein the waveguide and the one or more photosensitive detectors are configured such that engagement of the interface surface with the object by the user causes electromagnetic radiation emanating from the object to be guided by total internal reflection within the waveguide to the one or more photosensitive detectors, and wherein the output signals generated in response to the electromagnetic radiation that is emanated by the object and received from the waveguide by the one or more photosensitive detectors enable the processor to (i) identify the object, and (ii) determine the position of the object with respect to the interface surface. - View Dependent Claims (34, 35, 36, 37)
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38. A tool that is configured to input information to an interactive electronic display that implements optical detection to determine information related to the position of the tool, the tool comprising:
one or more emitters configured to emit electromagnetic radiation such that the emitted electromagnetic radiation enables detection of a rotational orientation of the tool by the interactive electronic display. - View Dependent Claims (39, 40, 41)
Specification