Remote input device
First Claim
1. A system for providing an input value to an electronic device, the system comprising:
- a light projecting device adapted to project a beam of light with an intensity pattern at a target area;
a sensor unit adapted to measure a value of the intensity pattern of the beam of light at a location in the target area; and
a processing unit having logic adapted to determine an input value associated with one of magnitude and direction of relative motion of the intensity pattern, the determination based at least in part on the value of the intensity pattern of the beam of light at the location in the target area.
3 Assignments
0 Petitions
Accused Products
Abstract
An input device providing users with a pointing capability includes a sender portion and a receiver portion. The sender portion is adapted to be manipulated by a user to specify a target point within a target area. The sender portion projects a light beam including a pattern on to the target area. A receiver portion includes one or more sensor units located in or near the target area. At least some of the sensor units receive a portion of the light beam regardless of the location of the target point within the target area. A processing unit in the receiver portion analyzes the portions of the light beam received by one or more sensor units to determine an attribute of the target point. The attribute can be the location or relative motion of the target point. The receiver portion may be integrated with a display device.
32 Citations
20 Claims
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1. A system for providing an input value to an electronic device, the system comprising:
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a light projecting device adapted to project a beam of light with an intensity pattern at a target area; a sensor unit adapted to measure a value of the intensity pattern of the beam of light at a location in the target area; and a processing unit having logic adapted to determine an input value associated with one of magnitude and direction of relative motion of the intensity pattern, the determination based at least in part on the value of the intensity pattern of the beam of light at the location in the target area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for providing an input value to an electronic device from a system comprising a light projecting device, a sensor unit, and a processing unit, the method comprising:
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projecting, from a light projecting device, a beam of light with an intensity pattern at a target area; measuring, by a sensor unit, a value of the intensity pattern of the beam of light at a location in the target area; and determining, using a processing unit, an input value associated with one of magnitude and direction of relative motion of the intensity pattern, the determining based at least in part on the value of the intensity pattern of the beam of light at the location in the target area. - View Dependent Claims (16, 17)
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18. A system for determining motion of an input device, the system comprising:
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a sender portion adapted to project a pattern of light onto a target area, the pattern of light having light and dark elements; and a first sensor and a second sensor in the target area, the first and second sensors adapted to detect transitions between the light and dark elements as the pattern of light is moved across the target area; wherein a direction of motion is determined by comparing timing of the transitions between the first and second sensors without need for first determining a target position. - View Dependent Claims (19, 20)
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Specification