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US 9,851,779 B2Granted
Method and apparatus for controlling sleep mode using a low power processor in portable terminal
AssigneeSamsung Electronics Co., Ltd.
InventorsChangryong Heo, Kenhyung Park
Life of this patent
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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.
Claims16
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, 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.
10 more elements
An apparatus for controlling a sleep mode in a portable terminal, the apparatus comprising;
- 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.
11 more elements
A method of controlling a sleep mode in a portable terminal, the method comprising:
- 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.
12 more elements
Dependencies are inferred from the claim text.