Method and apparatus for changing impedance of terminal included in connector
AssigneeSamsung Electronics Co., Ltd.
InventorsHang Seok Choi, Ku Chui Jung
Life of this patent
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Abstract
An electronic device includes a connector including a plurality of terminals for electrically connecting to a power supply device supplying a power to the electronic device and a control circuit. The control circuit senses a moisture entering the connector, changes an impedance of at least one specified data terminal among the terminals in response to the sensing of the moisture such that the power supply device identifies the impedance of the at least one specified data terminal and changes a level of a voltage depending on the impedance, and receives the voltage whose level is changed from the power supply device. Other various embodiments identified in the specification are also possible.
Claims14
An electronic device comprising:
- a connector including a plurality of terminals for electrically connecting to a power supply device supplying a power to the electronic device;
- and
- a control circuit, the control circuit being configured to:
- sense moisture entering the connector;
- change an impedance of at least one specified data terminal among the terminals in response to the sensing of the moisture for having the external power supply device, when connected via the connector, identify the impedance of the at least one specified data terminal and change a level of a voltage depending on the impedance;
- and
- receive the voltage whose level is changed from the power supply device,
- wherein the control circuit is configured to pull down the impedance of the at least one specified data terminal below a specified value in response to the sensing of the moisture, and
- wherein the received power has a magnitude corresponding to a voltage lower than a decomposition starting voltage upon pulling down the impedance of the at least one specified data terminal below the specified value.
An electronic device comprising:
- a power supply circuit:
- a connector including a plurality of terminals for electrically connecting to an external electronic device via an external connector comprised in the external electronic device to supply a power to the external electronic device from the electronic device;
- and
- a control circuit, the control circuit being configured to:
- measure an impedance corresponding to a second data terminal among the terminals when a voltage across a first data terminal among the terminals is changed from a first voltage to a second voltage by the external electronic device in response to sensing, by the external electronic device, of moisture entering the external connector;
- and
- control the power supplied to a power supply terminal among the terminals from the power supply circuit when the impedance satisfies a specified condition,
- wherein power provided to the external electronic device has a level for preventing corrosion of the external connector when current flows through the external connector while moisture is present in the external connector.
A method for changing an impedance of a terminal included in a connector of an electronic device comprising the connector with a plurality of terminals, the method comprising:
- measuring the impedance corresponding to a second data terminal among the terminals when a voltage across a first data terminal among the terminals is changed from a first voltage to a second voltage by an external electronic device in response to sensing, by the external electronic device, of moisture entering an external connector comprised in the external electronic device connected to the connector;
- and
- controlling a power supplied to a power supply terminal among the terminals from a power supply circuit included in the electronic device when the impedance satisfies a specified condition,
- wherein power provided to the external electronic device has a level for preventing corrosion of the external connector when current flows through the external connector while moisture is present in the external connector, and the provided power has a magnitude corresponding to a voltage lower than a decomposition starting voltage.
Dependencies are inferred from the claim text.