Pointing device enabling means, input device and portable device incorporating same
First Claim
1. A means for enabling actuation of a pointing device comprising:
- an activity sensor for sensing activation of the pointing device;
wherein the activity sensor comprises a threshold comparator; and
wherein the activity sensor is adapted to enable energization of the pointing device when the sensed activation of the pointing device exceeds a threshold.
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Accused Products
Abstract
The invention relates to means for enabling actuation of a pointing device and more particularly a means for detecting activity of a pointing device, so that the pointing is energized only when it needs to be in operation. The means include an activity sensor for sensing activation of the pointing device, said activity sensor comprising a threshold comparator, wherein the activity sensor is adapted to enable energization of the pointing device when the sensed activation of the pointing device exceeds a threshold. The pointing device is used for moving a pointer or prompt in a display, e.g. in mobile telephone. The present invention also relates to an input device with such a pointing device and a portable device incorporating same. The invention is directed to saving energy in portable devices avoiding accidental activation of the pointing device and automatic switching off to reduce the power consumption.
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Citations
19 Claims
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1. A means for enabling actuation of a pointing device comprising:
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an activity sensor for sensing activation of the pointing device;
wherein the activity sensor comprises a threshold comparator; and
wherein the activity sensor is adapted to enable energization of the pointing device when the sensed activation of the pointing device exceeds a threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An input device comprising:
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a pointing device;
an activity sensor for sensing activation of the pointing device;
wherein the activity sensor comprises a threshold comparator; and
wherein the activity sensor is adapted to enable energization of the pointing device when the sensed activation of the pointing device exceeds a threshold. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification