BATTERY OPERATED DEVICES
1 Assignment
0 Petitions
Accused Products
Abstract
A battery operated device such as a road stud comprises a micro-controller, a battery, and a light source. The micro-controller is configured to operate the battery to provide a train of power pulses to the light source, and each power pulse has a characteristic pulse period and a characteristic duty cycle comprising an on-cycle and an off-cycle. The micro-controller is turned on during the on-cycle and turned into a power saving or sleep mode during the off cycle. Setting the micro-controller into the power saving or sleep mode during the off cycle of the power pulse means substantial battery power saved to extend the operation time per charging of the battery.
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Citations
43 Claims
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1-23. -23. (canceled)
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24. A battery operated device comprising a micro-controller, a battery and a light source;
- wherein the micro-controller is configured to operate the battery to provide a train of power pulses to the light source, and each power pulse has a characteristic pulse period and a characteristic duty cycle comprising an on-cycle and an off-cycle;
characterized in that, the micro-controller is turned on during the on-cycle and turned into a power saving or sleep mode during the off-cycle. - View Dependent Claims (25, 26, 27, 28, 42, 43)
- wherein the micro-controller is configured to operate the battery to provide a train of power pulses to the light source, and each power pulse has a characteristic pulse period and a characteristic duty cycle comprising an on-cycle and an off-cycle;
- 29. A battery operated device comprising a micro-controller and a light source, wherein the micro-controller is configured to wake up and sleep at regular intervals, and wherein the wake up and sleep durations are different according to the operating modes of the road stud, the operating modes including a light-emitting mode during which the light source is turned on until a turn-off event occurs and a hibernation mode during which the light source is turned off until a turn-on event occurs.
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31. A battery operated device comprising a micro-controller, a re-chargeable battery, a solar panel for charging the re-chargeable battery and a light source;
- wherein the micro-controller is configured to turn off the light source when the output level of the solar panel is above the predetermined threshold for a predetermined duration, and to turn on the light source when the output level of the solar panel is below the predetermined threshold for a predetermined duration.
- View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
Specification