Motion control system for cinematography
US5457370A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 8, 1993 |
| Grant date | Oct 10, 1995 |
| Priority date | — |
| Expiry date | Feb 8, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/45176
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A computerised motion control apparatus for controlling a plurality of degrees of freedom of the positioning and orientation of a camera. The apparatus including a dolly (71) positionable by drive means along an extensible track arrangement (72), having a camera (73) mounted thereto and provided with motors to orientate the camera (73) by varying its pan (76), tilt (75), and roll (74). An operator interface device (15) is used to define position and velocity characteristics of the desired motion of each of the camera's axes of motion and a motor driver module (69) calculates a parametric cubic polynomial representation of the desired motion curve. The calculated coefficients of the motion curve parametric cubic polynomial representation are easily stored and used to regenerate the values of the curve for the purposes of display and providing motion curve values for each axis of motion of the camera. These calculations can be performed upon command and in real-time. Motion curve characteristics may be modified by way of redefining the position and velocity parameters and the values generated by a curve generator (50 ) may be digitally processed by a signal processing module (57). A …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.