Infrared Power Control Supporting Multi-Use Functionality
First Claim
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1. An infrared (IR) device comprising:
- an IR light source to output an IR signal;
a power control means for controlling an IR signal power level of the IR signal;
a processor;
a computer readable memory storing a first set of instructions that when executed by the processor cause the multi-function infrared device to enter a first device function state and storing a second set of instructions that when executed by the processor cause the multi-function infrared device to enter a second device function state, wherein the IR signal power level is adjusted responsive to whether the multi-function infrared device is in the first device function state or the second device function state.
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Abstract
Systems and methods for infrared power control supporting multi-use functionality are presented. In one example, the transmit power level of an infrared (IR) light source on a headset having multiple functional states is controlled based on the headset function state. Infrared power control is used to determine proximity between an infrared source device and an infrared receiver device.
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Citations
23 Claims
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1. An infrared (IR) device comprising:
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an IR light source to output an IR signal; a power control means for controlling an IR signal power level of the IR signal; a processor; a computer readable memory storing a first set of instructions that when executed by the processor cause the multi-function infrared device to enter a first device function state and storing a second set of instructions that when executed by the processor cause the multi-function infrared device to enter a second device function state, wherein the IR signal power level is adjusted responsive to whether the multi-function infrared device is in the first device function state or the second device function state. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for determining proximity between an IR source device and an IR receiver device comprising:
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cycling a power level of an IR signal transmitted from an IR source device to an IR receiver device; receiving a notification from the IR receiver device that detection of the IR signal at the receiver device has been lost; identifying a lost detection power level at which detection of the IR signal at the IR receiver device was lost; determining a proximity between the IR source device and the IR receiver device utilizing the lost detection power level. - View Dependent Claims (9, 10, 11)
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12. A method for determining proximity between an IR source device and an IR receiver device comprising:
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receiving a series of IR signals at an IR receiver device transmitted from an IR source device, each successive IR signal of the series of IR signals transmitted from the IR source device having a decreasing power level from a prior IR signal, wherein each IR signal includes associated transmit power level data; identifying at the IR receiver device when detection of the series of IR signals is lost; decoding at the IR receiver device the associated transmit power level of the prior IR signal received; and determining a proximity between the IR source device and the IR receiver device utilizing the associated transmit power level of the prior IR signal received. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method for operating a multi-function IR light output device comprising:
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providing a multi-function IR light output device having two or more user selectable operating function states; receiving at the multifunction IR light output device a user selected operating function state; selectively adjusting a power level of an IR light source output responsive to the user selected operating function state. - View Dependent Claims (20)
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21. A method for selecting a desired IR receiver from among several potential IR receivers comprising:
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outputting a first IR function request signal from an IR source device; receiving notification from two or more IR receivers that the IR function request signal was detected by the two or more IR receivers; outputting a second IR function request signal from the source device having a selectively decreased power level from the first IR function request signal; and receiving notification from a single IR receiver that the second IR function request signal was detected by the single IR receiver. - View Dependent Claims (22, 23)
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Specification