Remote controlled tracking system for tracking a remote control unit and positioning and operating a camera and method
US5561518A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1995 |
| Grant date | Oct 1, 1996 |
| Priority date | — |
| Expiry date | Jun 6, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/695
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The system includes improvements to a remote tracking system for motion picture as well as still picture cameras. The system provides for improved motor control for PAN and TILT functions including motor turn-off in the event of stall; the use of optical means to provide position feedback through the use of a light-blocking disk graduated on a "gray scale" which eliminates mechanical contacts; mechanical levers that are motor driven for operation of ON/OFF and ZOOM functions of a motion picture camera or shutter control for a still camera via either the base or remote unit command circuitry. The remote unit is formed as a hand-held wand and also provides audio circuitry. A space diversity RF receiver is used to improve the communication link between the remote unit and the base unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.