Remote control systems that can distinguish stray light sources
First Claim
Patent Images
1. A system comprising:
- a first plurality of predetermined light sources disposed in an asymmetric substantially linear pattern;
a photodetector configured to detect light sources and generate photodetector data representative of the detected light sources; and
a controller configured to identify a derivative pattern of light sources from the photodetector data, wherein the derivative pattern is indicative of the asymmetric substantially linear pattern.
2 Assignments
0 Petitions
Accused Products
Abstract
Remote control systems that can distinguish predetermined light sources from stray light sources, e.g., environmental light sources and/or reflections are provided. The predetermined light sources can be disposed in asymmetric substantially linear or two-dimensional patterns. The predetermined light sources also can output waveforms modulated in accordance with one or more signature modulation characteristics. The predetermined light sources also can output light at different signature wavelengths.
-
Citations
31 Claims
-
1. A system comprising:
-
a first plurality of predetermined light sources disposed in an asymmetric substantially linear pattern; a photodetector configured to detect light sources and generate photodetector data representative of the detected light sources; and a controller configured to identify a derivative pattern of light sources from the photodetector data, wherein the derivative pattern is indicative of the asymmetric substantially linear pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A system coupled to a display having first and second edges, the system comprising:
-
a first plurality of predetermined light sources disposed proximate the first edge of the display; a second plurality of predetermined light sources disposed proximate the second edge of the display, wherein the first and second pluralities of predetermined light sources form a two-dimensional pattern that is asymmetric about first and second orthogonal axes; a photodetector configured to detect light sources and generate photodetector data representative of the detected light sources; and a controller configured to identify a derivative pattern of light sources from the photodetector data, wherein the derivative pattern is indicative of the two-dimensional pattern. - View Dependent Claims (12)
-
-
13. A method for distinguishing a first predetermined number of predetermined light sources from stray light sources, wherein the predetermined light sources are disposed in a target pattern, the method comprising:
-
(a) accepting photodetector data from a photodetector, wherein the photodetector data is indicative of light detected by the photodetector; (b) identifying a plurality of detected light sources from the photodetector data; (c) identifying a plurality of permutations of the detected light sources, wherein each permutation comprises the same number of detected light sources as the first predetermined number of predetermined light sources, and wherein the detected light sources of each permutation form a detected pattern; (d) determining a correlation coefficient for each permutation, wherein each correlation coefficient indicates how well a detected pattern matches the target pattern; and (e) using the correlation coefficients to identify one or more permutations having detected patterns that approximate the target pattern. - View Dependent Claims (14, 15, 16)
-
-
17. A method for distinguishing at least one predetermined light source from stray light sources, the method comprising:
-
continuously modulating an output waveform of the at least one predetermined light source in accordance with at least one signature modulation characteristic; detecting light from light sources using a photodetector; generating photodetector data representative of the detected light; and identifying at least one light source from the photodetector data that exhibits the at least one signature modulation characteristic. - View Dependent Claims (18, 19, 20, 21, 22, 23)
-
-
24. A system comprising:
-
a first predetermined light source configured to emit light at a first signature wavelength; a second predetermined light source configured to emit light at a second signature wavelength, wherein the first signature wavelength is different than the second signature wavelength; and a remote control having a photodetector module, wherein the photodetector module is configured to detect the first and second signature wavelengths of light. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
-
Specification