Computer input device
First Claim
1. A digital input device for entering data into a digital system, comprising at least a first and a second remote sensor and a control unit, wherein a working area is set in proximity to the remote sensors and wherein parameters, within the working area, of a position of an object are detected by the input device based on data provided by each sensor and transmitted, by said control unit, to said digital system, and parameters outside said working area, of said object, if detected by said input device are rejected by said control unit and are not transmitted to said digital systems, wherein the second sensor is placed perpendicularly to the first sensor and an angle subtended by the object with an axis normal to at least one of said sensors, is ignored in obtaining the distance of the object from said sensor.
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Accused Products
Abstract
A digital input device for entering data into a digital system, comprises at least two remote sensors and a control unit. A working area is set up in proximity to the sensors and the position of an object within the working area is detected by the input device based on data provided by each sensor and transmitted, by said control unit, to said digital system. The position of an object outside said working area, if detected by said input device, is rejected by said control unit and is not transmitted to said digital system. The sensors can be ultrasonic sensors and the object can be a part of the body of a user. Use of a third sensor allows three-dimensional detection of the object.
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Citations
20 Claims
- 1. A digital input device for entering data into a digital system, comprising at least a first and a second remote sensor and a control unit, wherein a working area is set in proximity to the remote sensors and wherein parameters, within the working area, of a position of an object are detected by the input device based on data provided by each sensor and transmitted, by said control unit, to said digital system, and parameters outside said working area, of said object, if detected by said input device are rejected by said control unit and are not transmitted to said digital systems, wherein the second sensor is placed perpendicularly to the first sensor and an angle subtended by the object with an axis normal to at least one of said sensors, is ignored in obtaining the distance of the object from said sensor.
- 12. A digital input device for entering data into a digital system, comprising at least a first and a second remote sensor and a control unit, wherein a working volume is set in proximity to the remote sensors and wherein parameters, within the working volume, of a position of an object are detected by the input device based on data provided by each sensor and transmitted, by said control unit, to said digital system, and parameters outside said working volume, of said object, if detected by said input device are rejected by said control unit and are not transmitted to said digital system, wherein the second sensor is placed perpendicularly to the first sensor and an angle subtended by the object with an axis normal to at least one of said sensors, is ignored in obtaining the distance of the object from said sensor.
Specification