Apparatus for driving a touch pad and a portable terminal having the same
First Claim
1. An electronic device comprising:
- a display component;
a second processor electrically coupled with a touch input detection component to detect a touch input; and
a first processor electrically coupled with the second processor,wherein the first processor is configured to;
switch a state of the first processor from an inactive state to an active state based on receiving an interrupt signal while the first processor and the second processor are in the inactive state, andwhile the first processor is in the active state and the second processor is in the inactive state, provide an activating signal for activating the second processor to the second processor,wherein the second processor is configured to;
switch a state of the second processor from the inactive state to the active state based on receiving the activating signal from the first processor while the second processor is in the inactive state,receive a touch input signal based on the touch input via the touch input detection component while the second processor is in the active state, andprovide a control signal, based on the received touch input signal, to the first processor in the active state, andwherein the first processor is further configured to control an operation of the electronic device based on the control signal received from the second processor.
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Abstract
An apparatus for driving a touchpad of a portable terminal including a second control unit controlling the touchpad in an active mode is provided. The apparatus includes a sensor unit for generating interrupt signals when pressure on the touchpad is sensed, a first control unit for outputting activating signals to activate the second control unit when the interrupt signals are input and a switching unit for transmitting the interrupt signals generated from the sensor unit to the first control unit when the second control unit is in an inactive mode. Accordingly, even though the multimedia processor embedded in the portable terminal is in an inactive mode, the multimedia processor is activated when a user presses the touchpad, thereby making it possible to process signals input by touching the touchpad, particularly, to keep the user interface. Furthermore, the multimedia processor embedded in the portable terminal can reduce the consumption of battery power required to maintain the user interface, as compared with multimedia processors maintaining operating in a conventional polling method.
56 Citations
20 Claims
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1. An electronic device comprising:
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a display component; a second processor electrically coupled with a touch input detection component to detect a touch input; and a first processor electrically coupled with the second processor, wherein the first processor is configured to; switch a state of the first processor from an inactive state to an active state based on receiving an interrupt signal while the first processor and the second processor are in the inactive state, and while the first processor is in the active state and the second processor is in the inactive state, provide an activating signal for activating the second processor to the second processor, wherein the second processor is configured to; switch a state of the second processor from the inactive state to the active state based on receiving the activating signal from the first processor while the second processor is in the inactive state, receive a touch input signal based on the touch input via the touch input detection component while the second processor is in the active state, and provide a control signal, based on the received touch input signal, to the first processor in the active state, and wherein the first processor is further configured to control an operation of the electronic device based on the control signal received from the second processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for an electronic device including a display component, a second processor electrically coupled with a touch input detection component to detect a touch input, and a first processor electrically coupled with the second processor, the method comprising:
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switching, by the first processor, a state of the first processor from an inactive state to an active state based on receiving an interrupt signal while the first processor and the second processor are in the inactive state; while the first processor is in the active state and the second processor is in the inactive state, providing, by the first processor, an activating signal for activating the second processor to the second processor; switching, by the second processor, a state of the second processor from the inactive state to the activate state based on receiving the activating signal from the first processor while the second processor is in the inactive state; receiving, by the second processor, a touch input signal based on the touch input via the touch input detection component while the second processor is in the active state; providing, by the second processor, a control signal, based on the received touch input signal, to the first processor in the active state; and controlling, by the first processor an operation of the electronic device based on the control signal received from the second processor. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification