Video camera monitoring system
US4369467A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 19, 1981 |
| Grant date | Jan 18, 1983 |
| Priority date | — |
| Expiry date | Jan 19, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/66
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video camera monitoring system includes a plurality of video cameras and a control system provided for selecting one of the cameras to be controlled and causing a plurality of control signals to control various functions of the camera with each signal corresponding to a particular predesignated function. The video cameras of the system can each be individually controlled or controlled simultaneously from a single set of controls at an input console. A separate control circuit is associated with each video camera and is arranged at the location of the camera. Both the control circuit and the camera are provided with power from a source located at the camera location. The output signals from each control circuit are generated in response to constant voltage input signals produced on an input line of the control circuit. An input console is coupled to the input line of the control circuit associated with a video camera through a transmission line over which different constant level voltage input signals are established. The input circuit enables the operator to first select the particular camera to be controlled and then to vary the input signals supplied to the control circuit for …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.