3D remote control system employing absolute and relative position detection
First Claim
1. A system coupled to a display, the display operative to show an image substantially defined by first and second orthogonal axes, the system comprising:
- a remote control having a relative motion sensor, wherein the relative motion sensor outputs data indicative of a change in a position of the remote control;
at least one predetermined light source;
a photodetector that detects light from the at least one predetermined light source and outputs data indicative of the detected light; and
at least one controller configured to;
determine an initial absolute position of the remote control in a third axis based on the data output by the photodetector, wherein the third axis is orthogonal to the first and second axes, and wherein at least a portion of the initial absolute position is calculated based on an average of positions of the remote control detected over a predetermined amount of time; and
determine an updated absolute position of the remote control in the third axis based on the data output by the relative motion sensor and the initial absolute position of the remote control.
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Accused Products
Abstract
The present invention can include three-dimensional remote control systems that can detect an absolute location to which a remote control is pointing in first and second orthogonal axes and an absolute position of the remote control in a third orthogonal axis. Remote control systems of the present invention can employ absolute position detection with relative position detection. Absolute position detection can indicate an initial absolute position of the remote control and relative position detection can indicate changes in the position of the remote control. By combining absolute and relative position detection, remote control systems of the present invention can track remote controls more precisely than systems that only employ absolute position detection. The present invention also can include methods and apparatus for zooming in and out of an image shown on a display based on the absolute position of the remote control in the third axis.
93 Citations
32 Claims
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1. A system coupled to a display, the display operative to show an image substantially defined by first and second orthogonal axes, the system comprising:
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a remote control having a relative motion sensor, wherein the relative motion sensor outputs data indicative of a change in a position of the remote control; at least one predetermined light source; a photodetector that detects light from the at least one predetermined light source and outputs data indicative of the detected light; and at least one controller configured to; determine an initial absolute position of the remote control in a third axis based on the data output by the photodetector, wherein the third axis is orthogonal to the first and second axes, and wherein at least a portion of the initial absolute position is calculated based on an average of positions of the remote control detected over a predetermined amount of time; and determine an updated absolute position of the remote control in the third axis based on the data output by the relative motion sensor and the initial absolute position of the remote control. - View Dependent Claims (2, 3, 4, 5, 6, 27)
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7. A method for use with a system having a remote control and a display showing an image substantially defined by first and second orthogonal axes, the method comprising:
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determining an initial absolute position of the remote control in a third axis with respect to a reference location using an absolute position detection sub-system, wherein the third axis is orthogonal to the first and second axes, and wherein the initial absolute position is determined based at least in part on distance between at least two predetermined light sources external to the display; determining a change in a position of the remote control using a relative position detection sub-system; and determining an updated absolute position of the remote control in the third axis with respect to the reference location by combining the initial absolute position of the remote control with the change in the position of the remote control. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A method for use with a system coupled to a display, wherein the display shows an image substantially defined by first and second orthogonal axes, the system having a remote control, the method comprising:
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detecting a first absolute position of the remote control in a third axis with respect to a reference location based on data output by a photodetector, wherein the third axis is orthogonal to the first and second axes; generating first signals for rendering the image shown on the display based on the first absolute position of the remote control in the third axis with respect to the reference location; detecting a second absolute position of the remote control in the third axis based on data output by a relative motion sensor and the first absolute position of the remote control; and generating second signals for zooming in on or zooming out of at least a portion of the image based on the second absolute position of the remote control in the third axis. - View Dependent Claims (16, 17, 18, 19, 20, 30, 31, 32)
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21. A remote control operative for use with a display, the display operative to show an image substantially defined by first and second orthogonal axes, the remote control comprising:
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an absolute position detection component of an absolute position detection sub-system, the absolute position detection sub-system comprising one or more electro-optical components, wherein the absolute position detection sub-system detects an initial absolute position of the remote control in a third axis orthogonal to the first and second axes; a relative position detection component of a relative position detection sub-system, wherein the relative position detection sub-system detects a change in a position of the remote control, the relative position detection component comprising a relative motion sensor; and a controller disposed in communication with the absolute and relative position detection components, wherein the controller is operative to; detect an absolute position of the remote control in the third axis by combining data from the relative position detection sub-system comprising the change in the position of the remote control with data from the absolute position detection sub-system comprising the initial absolute position of the remote control; and continuously update the absolute position based on additional data from the relative position detection sub-system and the absolute position detection sub-system. - View Dependent Claims (22, 23, 24, 25, 26, 28, 29)
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Specification