Structure of motor-driven swing unit
US6479813B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2000 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | May 1, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/19634
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A motor-driven pan-tilt unit such as a pan-tilt camera mount designed to remotely control panning and tilting motion of, for example, a surveillance camera is provided. The pan-tilt unit includes a pan mechanism, a transmitting unit, and an optical signal transmitting unit. The pan mechanism has a stationary housing and a rotary shaft in connection with the camera. The transmitting unit includes a plurality of conductive rings and a plurality of conductive contacts. Each of the conductive rings is mounted on one of the rotary shaft and an inner wall of the stationary housing in electrical contact with one of the conductive contacts to establish transmission of electric power and control signals required for a tilt mechanism and the camera. The optical signal transmitting unit includes a light-emitting element and a light-sensitive element. One of the light-emitting element and the light-sensitive element is attached to an end of the rotary shaft so as to establish transmission of an optical signal from the light-emitting element to the light-sensitive element for transmitting image data from the camera to a signal processing circuit mounted on a stationary part of the pan-tilt unit…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.