US 11,381,154 B2 · Dehumming a chime with a video doorbell

Abstract

A circuit is described for powering a chime that outputs audio in response to detection of an entity by a video doorbell. The circuit includes a rectifier circuit configured to generate a first signal based on a power source and a first switch coupled to the rectifier circuit. The first switch is configured to provide, based on the first signal, a first DC voltage signal during a first operating mode where the doorbell receives input that triggers actuation of the chime in response to detection of the entity. The circuit includes a second switch coupled to the rectifier circuit and the first switch. Based on the first signal, the second switch provides a second DC voltage signal during a second operating mode where the chime outputs the audio based on the input that triggers actuation of the chime in response to detection of the entity.

Claims20

Dependent claims

A circuit for powering a chime that outputs audio in response to detection of an entity by a video doorbell, the circuit comprising:

a rectifier circuit configured to generate a first signal based on a power source;
a first switch coupled to the rectifier circuit, wherein the first switch is configured to provide, based on the first signal, a first direct-current (DC) voltage signal during a first operating mode where the video doorbell receives input that triggers actuation of the chime in response to detection of the entity;
and
a second switch coupled to the rectifier circuit and the first switch, wherein the second switch is configured to provide, based on the first signal, a second DC voltage signal during a second operating mode where the chime outputs the audio based on the input that triggers actuation of the chime in response to detection of the entity.

1 more element

Dependencies are inferred from the claim text.

Dehumming a chime with a video doorbell

Life of this patent

Dehumming a chime with a video doorbell

Life of this patent

Abstract

Claims20