Doorbell sound output device controllers, doorbell switches, and associated systems and methods
First Claim
1. A doorbell sound output device controller, comprising:
- a switching device configured to control flow of electrical current between the doorbell sound output device controller and a doorbell sound output device; and
control circuitry configured to control the switching device to enable flow of electrical current between the doorbell sound output device controller and the doorbell sound output device in response to receiving an activation signal from a doorbell switch external to the doorbell sound output device controller, wherein;
the control circuitry comprises a receiver configured to receive the activation signal from the doorbell switch,the activation signal comprises a tone,the receiver is configured to receive the tone via wiring electrically coupling the doorbell switch to the doorbell sound output device controller, andthe receiver includes a phase-locked loop configured to detect a signal having a frequency of the tone.
1 Assignment
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Accused Products
Abstract
A doorbell switch includes a user input device configured to receive a user command to activate a doorbell sound output device, and activation circuitry configured to generate an activation signal in response to the user input device receiving the user command to activate the doorbell sound output device. A doorbell sound output device controller includes a switching device configured to control flow of electrical current between the doorbell sound output device controller and the doorbell sound output device, and control circuitry configured to control the switching device to enable flow of electrical current between the doorbell sound output device controller and the doorbell sound output device in response to receiving the activation signal from the doorbell switch.
100 Citations
19 Claims
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1. A doorbell sound output device controller, comprising:
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a switching device configured to control flow of electrical current between the doorbell sound output device controller and a doorbell sound output device; and control circuitry configured to control the switching device to enable flow of electrical current between the doorbell sound output device controller and the doorbell sound output device in response to receiving an activation signal from a doorbell switch external to the doorbell sound output device controller, wherein; the control circuitry comprises a receiver configured to receive the activation signal from the doorbell switch, the activation signal comprises a tone, the receiver is configured to receive the tone via wiring electrically coupling the doorbell switch to the doorbell sound output device controller, and the receiver includes a phase-locked loop configured to detect a signal having a frequency of the tone. - View Dependent Claims (2, 5, 6, 7, 9, 10, 11, 12, 13, 14)
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3. A doorbell sound output device controller, comprising:
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a switching device configured to control flow of electrical current between the doorbell sound output device controller and a doorbell sound output device; and control circuitry configured to control the switching device to enable flow of electrical current between the doorbell sound output device controller and the doorbell sound output device in response to receiving an activation signal from a doorbell switch external to the doorbell sound output device controller, wherein; the control circuitry comprises current sense circuitry configured to receive the activation signal from the doorbell switch via a change in electrical current flowing between the doorbell sound output device controller and the doorbell switch, the current sense circuitry comprises; an electrical conductor configured to be electrically coupled to the doorbell switch, and a Hall effect sensor configured to sense a magnetic field generated by the electrical current flowing through the electrical conductor, the Hall effect sensor providing galvanic isolation between direct-current (DC) components of the control circuitry and alternating-current (AC) powered circuitry. - View Dependent Claims (4, 15, 16, 17, 18, 19)
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8. The doorbell sound output device controller of 1, wherein the switching device comprises a triac.
Specification