SYSTEM AND METHOD FOR ACTIVATING AN ELECTRONIC DEVICE
First Claim
1. An activation circuit for an electronic device, comprising:
- a first accelerometer located in said device to detect a movement of said device along a specific axis;
a second accelerometer which is activated upon receiving a movement signal from said first accelerometer indicating a movement of said electronic device along said specific axis;
an input device; and
a monitoring circuit connected to said input device and an output of said second accelerometer, said monitoring circuit providing power to said input device when said second accelerometer indicates movement of said device that surpasses a threshold and then generating an activation signal to operate said electronic device in a higher power state utilizing a notable signal received from said input device.
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Accused Products
Abstract
The disclosure provides a circuit and method for activating an electronic device from a low power state. The activation circuit comprises: a first accelerometer located in the device to detect a movement of the device along a specific axis; a second accelerometer which is activated upon receiving a movement signal from the first accelerometer indicating a movement of the electronic device along the specific axis; an input device; and a monitoring circuit connected to the input device and an output of the second accelerometer, the monitoring circuit providing power to the input device when the second accelerometer indicates movement of the device that surpasses a threshold and then generating an activation signal to operate the electronic device in a higher power state utilizing a notable signal received from the input device.
40 Citations
20 Claims
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1. An activation circuit for an electronic device, comprising:
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a first accelerometer located in said device to detect a movement of said device along a specific axis; a second accelerometer which is activated upon receiving a movement signal from said first accelerometer indicating a movement of said electronic device along said specific axis; an input device; and a monitoring circuit connected to said input device and an output of said second accelerometer, said monitoring circuit providing power to said input device when said second accelerometer indicates movement of said device that surpasses a threshold and then generating an activation signal to operate said electronic device in a higher power state utilizing a notable signal received from said input device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for activating an electronic device, comprising:
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monitoring for signals from a low-g MEM accelerometer to indicate an initial movement of said device along a predetermined axis for said device and then activating a second accelerometer; monitoring for signals from said second accelerometer and then activating an input device if a signal from said second accelerometer surpasses a predefined threshold; waiting for a notable signal to be received from said input device for a predetermined length of time; if said notable signal is received within said predetermined time, generating an activation signal for activating said electronic device to a higher power state; and if said notable signal is not received within said predetermined time, deactivating said input device and said second accelerometer.
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12. The method for activating an electronic device 11, wherein:
said step of waiting for said notable signal to be received from said input device utilizes a slow clock signal to track said predetermined length of time.
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13. The method for activating an electronic device 11, further comprising:
deactivating said input device if said predetermined time elapses without receiving said notable signal from said input device.
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14. The method for activating an electronic device 11, wherein:
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upon generation of said activation signal, it is provided to a microprocessor associated with said device; and said microprocessor reacts to receipt of said activation signal by transiting to a higher power state.
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15. The method for activating an electronic device 11, further comprising:
using said activation signal to reset a monitoring circuit associated with said second accelerometer to allow said monitoring circuit to process subsequent signals from said second accelerometer.
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16. The method for activating an electronic device 11, wherein said input device detects movement of a finger by a sensor.
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17. An electronic device, comprising:
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a microprocessor; a first accelerometer located in said device to detect a movement of said device along a specific axis; a second accelerometer which is activated upon receiving a movement signal from said first accelerometer along said specific axis indicating a movement of said electronic device along said specific axis; an input device; and a monitoring circuit connected to said input device and an output associated with said threshold circuit, said monitoring circuit providing power to said input device when said second accelerometer generates a signal that exceeds a threshold and then generating an activation signal used to place said electronic device in a higher power state utilizing a notable signal received from said input device. - View Dependent Claims (18, 19, 20)
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Specification