Method and apparatus for unlocking a portable terminal using piezoelectric sensors
First Claim
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1. A portable terminal, comprising:
- at least one piezoelectric sensor positioned on at least one side of the portable terminal and configured to provide a voltage difference when a pressure is applied on the at least one piezoelectric sensor;
a storage unit to store a usage history for each function of the portable terminal; and
a controller to cancel a hold state of the portable terminal in response to a squeeze operation signal and to execute one of a function performed most recently and a function most frequently performed during a determined period of time based on the usage history, the squeeze operation signal being provided in response to the pressure being greater than or equal to a threshold level,wherein the squeeze operation signal is not provided in response to a contact being detected by the at least one piezoelectric sensor and the pressure being less than the threshold level.
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Abstract
The present invention relates to a method and apparatus for unlocking a portable terminal, and more particularly, to a method and apparatus for unlocking a portable terminal capable of canceling a hold state of the portable terminal without using a hold key. A portable terminal may include at least one piezoelectric sensor. When a squeeze operation signal is generated as pressure is applied to the at least one piezoelectric sensor, the hold state of the portable terminal is canceled.
16 Citations
12 Claims
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1. A portable terminal, comprising:
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at least one piezoelectric sensor positioned on at least one side of the portable terminal and configured to provide a voltage difference when a pressure is applied on the at least one piezoelectric sensor; a storage unit to store a usage history for each function of the portable terminal; and a controller to cancel a hold state of the portable terminal in response to a squeeze operation signal and to execute one of a function performed most recently and a function most frequently performed during a determined period of time based on the usage history, the squeeze operation signal being provided in response to the pressure being greater than or equal to a threshold level, wherein the squeeze operation signal is not provided in response to a contact being detected by the at least one piezoelectric sensor and the pressure being less than the threshold level. - View Dependent Claims (2, 3, 4, 5)
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6. A method of unlocking a portable device using a piezoelectric sensor, the method comprising:
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providing a squeeze operation signal in response to a pressure applied to at least one piezoelectric sensor, the pressure being greater than or equal to a threshold level; canceling a hold state of the portable terminal in response to the squeeze operation signal being provided; and performing one of a function performed most recently and a function most frequently performed during a determined period of time based on a previously stored usage history for each function of the portable terminal, wherein the squeeze operation signal is not provided in response to a contact being detected by the at least one piezoelectric sensor and the pressure being less than the threshold level. - View Dependent Claims (7, 8, 9)
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10. An apparatus, comprising:
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at least one piezoelectric sensor to detect an input pressure; a storage unit to store a usage history for each function of the portable terminal; a controller to operate the apparatus in a first mode and a second mode and to receive a first signal from the at least one piezoelectric sensor; and a display unit to receive, from the controller, an activation signal in response to the first signal, wherein, in response to receiving the first signal, the controller is configured to cancel the first mode and to execute one of a function performed most recently and a function most frequently performed during a determined period of time based on the usage history in the second mode, the first signal being provided in response to the input pressure being greater than or equal to a threshold value, and wherein the first signal is not provided in response to a contact being detected by the at least one piezoelectric sensor and the input pressure being less than the threshold value. - View Dependent Claims (11, 12)
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Specification