Power saving control method and electronic device supporting the same
First Claim
Patent Images
1. A method for controlling a power mode of an electronic device having a display unit and camera, the method comprising:
- executing a particular function;
in response to an expiration of a specified time period without receiving an input event on the display unit while the particular function is executed, turning on the camera;
obtaining by the camera a current image in front of the display unit to determine a presence of a user of the electronic device;
determining whether the obtained current image contains a specific pattern indicative of a human facial feature; and
changing the power mode of the electronic device according to the determination outcome.
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Abstract
A control for a power saving of an electronic device is disclosed. The device includes a camera configured to be activated and then obtain an image when no input event is received within a given time after activation of a selected function. The device further includes a control unit configured to, if the obtained image contains a specific pattern, determine whether the specific pattern corresponds to a human face pattern, and to, if the specific pattern does not correspond to the human face pattern, perform a power saving control of the electronic device.
11 Citations
22 Claims
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1. A method for controlling a power mode of an electronic device having a display unit and camera, the method comprising:
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executing a particular function; in response to an expiration of a specified time period without receiving an input event on the display unit while the particular function is executed, turning on the camera; obtaining by the camera a current image in front of the display unit to determine a presence of a user of the electronic device; determining whether the obtained current image contains a specific pattern indicative of a human facial feature; and changing the power mode of the electronic device according to the determination outcome. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for controlling a power saving mode of an electronic device having a camera and display unit, the method comprising:
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executing a particular function; in response to an expiration of a first specified time period without receiving an input event on the display unit while the particular function is executed, turning on the camera; obtaining by the camera a first image in front of the display unit to determine a presence of a user of the electronic device; determining whether the first image contains a specific pattern; when the first image contains no specific pattern, operating a first mode of the electronic device; when no further input event is received within a second specific time period on the display unit after the first mode, obtaining a second image through the camera; determining whether the second image contains the specific pattern; when the second image contains the specific pattern, determining whether the specific pattern corresponds to a human facial feature; and when the specific pattern does not correspond to the human facial feature, operating a second mode of the electronic device. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. An electronic device for supporting a power saving mode, comprising:
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a camera configured to turn on to obtain an image in front of the electronic device to determine a presence of a user of an electronic device upon expiration of a specified time period during an activation of a selected function; and a control unit configured to, activate the camera upon the expiration of the specified time period, determine whether the obtained current image contains a specific pattern indicative of a human facial feature, and configured to change the power mode of the electronic device according to the determination outcome. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A method for controlling a power mode of an electronic device, the method comprising:
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starting a first timer; turning on a camera to obtain a first camera image in front of a display unit of the electronic device to determine a presence of a user of the electronic device when no input event is received until an expiration of the first timer; when the first camera image contains a facial feature substantially identical from a previously obtained image, adjusting a brightness of a display unit by a predefined amount and starting a second timer; obtaining a second camera image when no further input event is received until the expiration of the second timer; and when the second camera image contains a portion of the facial feature substantially identical from the previously obtained image, entering into a sleep mode. - View Dependent Claims (22)
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Specification