Protection circuit for terminal camera
US11165247B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2018 |
| Grant date | Nov 2, 2021 |
| Priority date | — |
| Expiry date | May 15, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/54
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A protection circuit and a printed circuit board (PCB) for a terminal camera includes, in a configuration for coupling with a voice control motor (VCM), a drive circuit, a first circuit, a second circuit, a first protection system, a second protection system, and a third protection system. The first circuit and the second circuit are choke inductors or choke circuits including choke inductors, and are configured to couple to two ends of the VCM. The first protection system, the second protection system, and the third protection system are coupled to other key positions of the circuits. The devices are arranged on a top layer of the PCB, and a plurality of layers of the PCB are configured to route a signal based on design requirements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.