Apparatus and method for inputing data
First Claim
Patent Images
1. An input device for detecting input with respect to a reference plane, comprising:
- a light source providing a plane of light adjacent to the reference plane, wherein the light source does not project an input template onto the reference plane;
a light sensor positioned to sense light reflected from the plane of light, the sensor at an acute angle with respect to the reference plane, and generating a signal indicative of sensed light; and
a circuit responsive to said light sensor for determining a position of an object with respect to the reference plane.
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Abstract
An input device for detecting input with respect to a reference plane. The input device includes a light sensor positioned to sense light at an acute angle with respect to the reference plane and for generating a signal indicative of sensed light, and a circuit responsive to said light sensor for determining a position of an object with respect to the reference plane.
135 Citations
37 Claims
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1. An input device for detecting input with respect to a reference plane, comprising:
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a light source providing a plane of light adjacent to the reference plane, wherein the light source does not project an input template onto the reference plane;
a light sensor positioned to sense light reflected from the plane of light, the sensor at an acute angle with respect to the reference plane, and generating a signal indicative of sensed light; and
a circuit responsive to said light sensor for determining a position of an object with respect to the reference plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. In combination, an input device for detecting input with respect to a reference plane, and an electronic device, comprising:
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a light source providing a plane of light adjacent to the reference plane, wherein the light source does not project an input template onto the reference plane;
a light sensor positioned to sense light reflected from the plane of light, the sensor at an acute angle with respect to the reference plane, and generating a signal indicative of sensed light;
a circuit responsive to said light sensor for determining a position of an object with respect to the reference plane and producing an output signal indicative of the input; and
an electronic device responsive to the output signal from said circuit.
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24. A method of determining an input with respect to a reference plane, comprising:
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providing a source of planar light adjacent to the reference plane, wherein the source of planar light does not project an input template onto the reference plane;
sensing light reflected from the planar light, the sensing at an acute angle with respect to the reference plane;
generating at least one signal indicative of sensed light;
determining a position of an object with respect to the reference plane from the at least one signal indicative of the sensed light; and
determining an input from the position of the object with respect to the reference plane. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
prompting the user to provide input at a position on the reference plane;
determining a position of input provided by the user; and
orienting the reference plane so that the position of the input for which the user was prompted corresponds to the position of the input provided by the user.
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28. The method of claim 27, wherein the reference plane is defined as an input device selected from a group consisting of a keyboard and a pointer.
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29. The method of claim 27, wherein:
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the reference plane is defined as a keyboard;
prompting includes prompting the user to enter a character on the keyboard; and
orienting includes orienting the reference plane so that the position of the character for which the user was prompted corresponds to the position of the input provided by the user.
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30. The method of claim 27, wherein:
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prompting includes prompting the user for a plurality of inputs, each having a position on the reference plane;
determining includes determining a position for each input provided by the user; and
orienting includes orienting the reference plane so that the position of each of the inputs for which the user was prompted corresponds to the position of each of the inputs provided by the user.
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31. The method of claim 30, wherein determining includes:
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providing a source of light;
sensing light at an acute angle with respect to the reference plane;
generating at least one signal indicative of sensed light; and
determining a position of an object with respect to the reference plane from the at least one signal indicative of the sensed light.
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32. The method of claim 24, wherein determining a position of an object includes performing an operation selected from a group consisting of binocular disparity and triangulation.
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33. The method of claim 24, further comprising producing an output signal indicative of the input.
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34. The method of claim 33, further comprising providing an electronic device responsive to the output signal.
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35. An input device for detecting input with respect to a reference plane, comprising:
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a light source providing a plane of light, the light source being located remote from a position at which input is to be detected relative to the reference plane, wherein the light source does not project an input template onto the reference plane;
a light sensor positioned to sense light reflected from the plane of light, the sensor at an acute angle with respect to the reference plane, and generating a signal indicative of sensed light, the light sensor being located remote from a position at which input is to be detected relative to the reference plane; and
a circuit responsive to said light sensor for determining a position of an object with respect to the reference plane.
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36. In combination, an input device for detecting input with respect to a reference plane, and an electronic device, comprising:
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a light source providing a plane of light, the light source being located remote from a position at which input is to be detected relative to the reference plane, wherein the light source does not project an input template onto the reference plane;
a light sensor positioned to sense light reflected from the plane of light, the sensor at an acute angle with respect to the reference plane, and generating a signal indicative of sensed light, the light sensor being located remote from a position at which input is to be detected relative to the reference plane;
a circuit responsive to said light sensor for determining a position of an object with respect to the reference plane and producing an output signal indicative of the input; and
an electronic device responsive to the output signal from said circuit.
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37. A method of determining an input with respect to a reference plane, comprising:
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providing a source of planar light, the source of planar being located remote from a position at which input is to be detected relative to the reference plane, wherein the source of planar light does not project an input template onto the reference plane;
sensing light reflected from the planar light, the sensing at an acute angle with respect to the reference plane, the light being sensed remote from a position at which input is to be detected relative to the reference plane;
generating at least one signal indicative of sensed light;
determining a position of an object with respect to the reference plane from the at least one signal indicative of the sensed light; and
determining an input from the position of the object with respect to the reference plane.
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Specification