Retrofitting digital video surveillance system
US5237408A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 1991 |
| Grant date | Aug 17, 1993 |
| Priority date | — |
| Expiry date | Aug 2, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/181
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system which retrofits to an existing surveillance system and cooperates with sensors, video cameras and video monitors of the existing surveillance system. The system comprises a plurality of processing boards having a substantially similar architecture. Several frame grabber/frame storage processing boards are provided, each of which digitize the analog video signals from the video cameras and stores the digital data in a solid state buffer memory. Several display boards are provided to display the digitized video data on display monitors. A controller board controls the exchange of video data and command or control messages over a video link and between processing boards, respectively. Additional expansion boards may be added to support additional buffering and system options. Each processing board is built around a parallel processing computer chip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.