Doorbell system and doorbell control device
First Claim
1. A doorbell system, comprising:
- a doorbell control device, having a first pin, a second pin, and a third pin, wherein the doorbell control device comprises;
a speaker unit; and
a control unit, configured to control whether or not the speaker unit produces sound according to a current or a voltage of the second pin;
wherein the first pin is coupled to the second pin;
a transformer, outputting an AC voltage to the first pin and the third pin of the doorbell control device; and
a doorbell interface device, coupled to the second pin and the third pin of the doorbell control device;
wherein the doorbell control device further comprises;
a rectifier, coupled to the first pin and the third pin, configured to generate a first DC voltage; and
a DC voltage conversion circuit, configured to convert the first DC voltage to a second DC voltage, wherein the control unit and the speaker unit are powered by the second DC voltage.
1 Assignment
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Accused Products
Abstract
A doorbell system and a doorbell control device are provided. The doorbell system includes a doorbell control device, a transformer, and a doorbell interface device. The doorbell control device has a first pin, a second pin, and a third pin. The doorbell control device includes a speaker unit and a control unit. The control unit is configured to control whether or not the speaker unit produces sound according to a current or a voltage of the second pin. The first pin is coupled to the second pin. The transformer outputs an AC voltage to the first pin and the third pin of the doorbell control device. The doorbell interface device is coupled to the second pin and the third pin of the doorbell control device.
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Citations
11 Claims
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1. A doorbell system, comprising:
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a doorbell control device, having a first pin, a second pin, and a third pin, wherein the doorbell control device comprises; a speaker unit; and a control unit, configured to control whether or not the speaker unit produces sound according to a current or a voltage of the second pin; wherein the first pin is coupled to the second pin; a transformer, outputting an AC voltage to the first pin and the third pin of the doorbell control device; and a doorbell interface device, coupled to the second pin and the third pin of the doorbell control device; wherein the doorbell control device further comprises; a rectifier, coupled to the first pin and the third pin, configured to generate a first DC voltage; and a DC voltage conversion circuit, configured to convert the first DC voltage to a second DC voltage, wherein the control unit and the speaker unit are powered by the second DC voltage. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A doorbell control device, having a first pin, a second pin, and a third pin, the doorbell control device comprising:
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a rectifier, coupled to the first pin and the third pin, configured to generate a first DC voltage; a DC voltage conversion circuit, configured to convert the first DC voltage to a second DC voltage; a speaker unit, powered by the second DC voltage; and a control unit, powered by the second DC voltage, configured to control whether or not the speaker unit produces sound according to a current or a voltage of the second pin; wherein the first pin is coupled to the second pin. - View Dependent Claims (8, 9, 10, 11)
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Specification