ELECTRONIC DEVICE CAPABLE OF DETECTING THE TIMING FOR REPLACING A FILTER
First Claim
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1. An electronic device comprising:
- a housing comprising a vent;
a filter installed nearby the vent, the filter comprising;
a first filter section made of a first material; and
a second filter section made of a second material, the first material having better uniformity than the second material;
a light emitter for emitting a light signal to the first filter section;
a light receiver for receiving the light signal emitted from the light emitter; and
a control unit electrically connected to the light receiver for operating the electronic device according to a receiving result of the light signal received by the light receiver.
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Abstract
An electronic device includes a housing comprising a vent, and a filter installed nearby the vent. The filter includes a first filter section made of a first material, and a second filter section made of a second material. The first material has better uniformity than the second material. The electronic device further includes a light emitter for emitting a light signal to the first filter section, a light receiver for receiving the light signal emitted from the light emitter, and a control unit electrically connected to the light receiver for operating the electronic device according to a receiving result of the light signal received by the light receiver.
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Citations
20 Claims
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1. An electronic device comprising:
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a housing comprising a vent; a filter installed nearby the vent, the filter comprising; a first filter section made of a first material; and a second filter section made of a second material, the first material having better uniformity than the second material; a light emitter for emitting a light signal to the first filter section; a light receiver for receiving the light signal emitted from the light emitter; and a control unit electrically connected to the light receiver for operating the electronic device according to a receiving result of the light signal received by the light receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A filter device comprising:
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a filter comprising; a first filter section made of a first material; and a second filter section made of a second material, the first material having better uniformity than second material; a light emitter for emitting a light signal to the first filter section; and a light receiver for receiving the light signal emitted from the light emitter. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification