Method and apparatus for controlling sleep mode using a low power processor in portable terminal
First Claim
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1. A method of controlling a sleep mode in a portable terminal, the method comprising:
- detecting, by a sub-controller, a first sensor signal generated by a first sensor when a main controller is in the sleep mode, the first sensor comprising a camera and the first sensor signal comprising a visual signal;
extracting a sensed pattern from the detected first sensor signal;
determining whether the extracted sensed pattern is substantially identical with a preset wake-up pattern; and
cancelling the sleep mode by waking-up the main controller based on the extracted sensed pattern detected by the camera being substantially identical with the wake-up pattern, when the portable terminal is not moving,wherein the sub-controller is further configured to determine whether the portable terminal is moving when detecting the visual signal,wherein the sub-controller is further configured to extract the visual pattern from the detected visual signal when the portable terminal is not moving,wherein the sensed pattern comprises a visual pattern and the wake-up pattern comprises a visual wake-up pattern,wherein some pixels included in the camera are configured to be activated in the sleep mode and the camera is connected to the sub-controller through a low speed interface,wherein the sub-controller, connected to the first sensor employing a first resolution, extracts the sensed pattern, and wakes up the main controller if the extracted sensed pattern is identical with the preset wake-up pattern,wherein the main controller turns on a display and employs a second resolution of the first sensor, if the extracted sensed pattern is identical with the preset wake-up pattern,wherein the first resolution is lower than the second resolution, andwherein in response to the sleep mode changing to the wake-up due to the detection of a predetermined situation of the portable terminal, the main controller limits some functions of the portable terminal or turns off power of the portable terminal.
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Abstract
A method and an apparatus for controlling a sleep mode in a portable terminal having a main controller and a sub-controller operating at low power are provided. The method includes detecting, by the sub-controller, a first sensor signal generated by a first sensor when the main controller is in the sleep mode, extracting a sensed pattern from the detected first sensor signal, determining whether the extracted sensed pattern is substantially identical with a preset wake-up pattern, and cancelling the sleep mode by waking-up the main controller when the extracted sensed pattern is substantially identical with the wake-up pattern.
26 Citations
16 Claims
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1. A method of controlling a sleep mode in a portable terminal, the method comprising:
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detecting, by a sub-controller, a first sensor signal generated by a first sensor when a main controller is in the sleep mode, the first sensor comprising a camera and the first sensor signal comprising a visual signal; extracting a sensed pattern from the detected first sensor signal; determining whether the extracted sensed pattern is substantially identical with a preset wake-up pattern; and cancelling the sleep mode by waking-up the main controller based on the extracted sensed pattern detected by the camera being substantially identical with the wake-up pattern, when the portable terminal is not moving, wherein the sub-controller is further configured to determine whether the portable terminal is moving when detecting the visual signal, wherein the sub-controller is further configured to extract the visual pattern from the detected visual signal when the portable terminal is not moving, wherein the sensed pattern comprises a visual pattern and the wake-up pattern comprises a visual wake-up pattern, wherein some pixels included in the camera are configured to be activated in the sleep mode and the camera is connected to the sub-controller through a low speed interface, wherein the sub-controller, connected to the first sensor employing a first resolution, extracts the sensed pattern, and wakes up the main controller if the extracted sensed pattern is identical with the preset wake-up pattern, wherein the main controller turns on a display and employs a second resolution of the first sensor, if the extracted sensed pattern is identical with the preset wake-up pattern, wherein the first resolution is lower than the second resolution, and wherein in response to the sleep mode changing to the wake-up due to the detection of a predetermined situation of the portable terminal, the main controller limits some functions of the portable terminal or turns off power of the portable terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for controlling a sleep mode in a portable terminal, the apparatus comprising;
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a main controller configured to request entering the sleep mode; a first sensor configured to detect a first sensor signal when the main controller is in the sleep mode, the first sensor comprising a camera and the first sensor signal comprising a visual signal; and a sub-controller configured to; be activated to extract a sensed pattern from the first sensor signal detected by the first sensor when the main controller is in the sleep mode, and wake-up the main controller based on the extracted sensed pattern detected by the camera being substantially identical with a preset wake-up pattern, when the portable terminal is not moving, wherein the sub-controller is further configured to determine whether the portable terminal is moving when detecting the visual signal, wherein the sub-controller is further configured to extract the visual pattern from the detected visual signal when the portable terminal is not moving, wherein the sensed pattern comprises a visual pattern, and the wake-up pattern comprises a visual wake-up pattern, wherein some pixels included in the camera are configured to be activated in the sleep mode and the camera is connected to the sub-controller through a low speed interface, wherein the sub-controller, connected to the first sensor employing a first resolution, extracts the sensed pattern, and wakes up the main controller if the extracted sensed pattern is identical with the preset wake-up pattern, wherein the main controller turns on a display and employs a second resolution of the first sensor, if the extracted sensed pattern is identical with the preset wake-up pattern, wherein the first resolution is lower than the second resolution, and wherein in response to the sleep mode changing to the wake-up due to the detection of a predetermined situation of the portable terminal, the main controller limits some functions of the portable terminal or turns off power of the portable terminal. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method of controlling a sleep mode in a portable terminal, the method comprising:
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activating the sub-controller when the main controller enters the sleep mode; continuously collecting, by the sub-controller, sensor information generated by a camera for at least one of surrounding situation information of the portable terminal and state information of the portable terminal; determining whether the collected sensor information generated by the camera satisfies a preset alarm condition; waking-up the main controller when the alarm condition is satisfied based on the camera generated sensor information; limiting some functions of the portable terminal; and storing the collected sensor information in a protected area which a user is not able to access or delete, wherein the sub-controller is further configured to determine whether the portable terminal is moving when detecting the visual signal, wherein the sub-controller is further configured to extract the visual pattern from the detected visual signal when the portable terminal is not moving, wherein the sensor information comprises a visual signal, a visual pattern, and a visual wake-up pattern, wherein some pixels included in the camera are configured to be activated in the sleep mode and the camera is connected to the sub-controller through a low speed interface, wherein the sub-controller, connected to the first sensor employing a first resolution, extracts the sensed pattern, and wakes up the main controller if the extracted sensed pattern is identical with the preset wake-up pattern, wherein the main controller turns on a display and employs a second resolution of the first sensor, if the extracted sensed pattern is identical with the preset wake-up pattern, wherein the first resolution is lower than the second resolution, and wherein in response to the sleep mode changing to the wake-up due to the detection of a predetermined situation of the portable terminal, the main controller limits some functions of the portable terminal or turns off power of the portable terminal.
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Specification