Method and apparatus for control of an electronic system using intelligent movement detection
First Claim
1. An apparatus for power control of an electronic system using movement detection, the apparatus comprising:
- a movement sensor which senses when the electronic system is moved;
an event duration filter coupled to an output of the movement sensor which determines if a motion is in accordance with a predetermined criteria, said event duration filter including at least one shift register; and
a switch coupled to the event duration filter which controls a mode of the electronic system.
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Accused Products
Abstract
A battery powered electronic system (50, FIG. 1) is controlled by a movement sensor (20) which senses the acceleration of the electronic system (50). The output of the movement sensor (20) is filtered by an event duration filter (FIG. 2, 120, 121) which determines if the output is of sufficient duration and acceleration to trigger a change in the operation of the electronic system (50). If the acceleration meets the triggering criteria, the electronic system (50) can be made to change an on/off state, an operating mode, or to effect an incremental change in the electronic system (50) such as adjusting the volume or channel setting. Additional movement sensors (20) oriented in different axes can be used to trigger a change in the operation of the electronic system (50) according to a plurality of different directions of acceleration.
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Citations
21 Claims
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1. An apparatus for power control of an electronic system using movement detection, the apparatus comprising:
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a movement sensor which senses when the electronic system is moved; an event duration filter coupled to an output of the movement sensor which determines if a motion is in accordance with a predetermined criteria, said event duration filter including at least one shift register; and a switch coupled to the event duration filter which controls a mode of the electronic system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An apparatus for sensing movement in orthogonal axes in an electronic system, comprising:
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a plurality of movement sensors which sense movement in a particular direction; a plurality of event duration filters which determine if a motion is in accordance with a predetermined criteria, wherein each event duration filter is coupled to an output of each of the plurality of movement sensors; and a switch which changes an operation of the electronic system, wherein the switch is coupled to an output of each of the plurality of event duration filters.
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18. An event duration filter which indicates when a signal of sufficient magnitude and duration is present at an input, the event duration filter comprising:
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a plurality of flip-flops arranged as a series shift register, the series shift register comprising a first flip-flop, a plurality of middle flip-flops, and a last flip-flop, an output of the first flip-flop and the plurality of middle flip-flops being coupled to at least one input of a following flip-flop; the first flip-flop having a first and second input coupled to an external device, wherein the external device produces an electrical signal responsive to a stimulus, the first flip-flop also having a third input coupled to an external clock, the first flip-flop having an output coupled to an input of a first of the plurality of middle flip-flops and to a data selector, the data selector also being coupled to a data latch; the plurality of middle flip-flops having a first input coupled to a previous flip-flop, and an output coupled to a following flip-flop and an input of the data latch, the plurality of middle flip-flops also being coupled to the external device and the external clock; and the last flip-flop having an input coupled to a previous flip-flop, and an output to the data selector, the last flip-flop also having an input to the external device and the external clock. - View Dependent Claims (19, 20, 21)
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Specification