Abstract: A sensing unit (110) and method (200) for touchless interfacing using finger signing is provided. The sensing unit can include a sensor element (113) for tracking a touchless finger sign, a pattern recognition engine (114) for tracing a pattern in the touchless finger sign, and a processor (115) for performing an action on an object in accordance with the at least one pattern. The object may be a cursor, an object handled by the cursor, or an application object. A finger sign can be an touchless finger movement for controlling an object, or a touchless writing of an alpha-numeric character that is entered in an object. The processor can visually or audibly present the pattern in response to a recognition of the finger sign.

Abstract: A system (100) and method (160) for activating a touchless control is provided. The method can include detecting (162) a movement of a finger in a touchless sensing field, identifying (164) an activation cue in response to the finger movement, and activating (166) a touchless control of an object in response the activation cue. The method can include focusing the touchless sensing field (210) to produce a touchless projection space (220). An activation cue can be a positioning of a finger (302) within a bounded region (304) of the touchless projection space for a pre-determined amount of time. In one arrangement, cursor (124) navigation and control can be provided in accordance with touchless finger movements.

Abstract: A method (200) and system (220) for range detection is provided. The system can include a sensing unit (110) for detecting a location and movement of a first object (401), and a processor (107) for providing a measure of the movement. The processor can convert the measure to a coordinate signal for moving a second object (124) in accordance with a location and movement of the first object. The system can include a pulse shaper (109) for producing a pulse shaped signal (167) and a phase detector (101) for identifying a movement from a reflected signal (166). A portion of the pulse shaped signal can be a frequency modulated region (312), a constant frequency region (316), or a chirp region (324). In one arrangement, the pulse shaper can be a cascade of all-pass filters (515) for providing phase dispersion.

Abstract: A device (100) and a method (200) for operating a camera (130) based on touchless movements is provided. The device (100) includes a sensing unit (110) for detecting a touchless movement, and a controller (130) for handling one or more controls of the camera in accordance with the touchless movement. A virtual user interface is provided to allow a user to control a camera on a computer or a mobile device using touchless finger movements. Touchless controls are provided for zoom, pan, focus, aperture, balance, color, calibration, or tilt. A first touchless finger movement can select a control, and a second touchless finger movement can adjust the control.