Synchronous duplicate video recording apparatus
US5420725A · kind A · utility
Inventors
Key dates
| Filing date | Mar 17, 1994 |
| Grant date | May 30, 1995 |
| Priority date | — |
| Expiry date | Mar 17, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/10833
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Video recording apparatus (10) includes master video apparatus (12) including a video camera(16) and a master video recording device (18). The master video recording device is respectively started and stopped by respectively first and second signals (S1 and S2) provided by the camera. The master recording device produces an original video recording. The original video recording includes a time-code (TC) which is not visible in frames of the original recording when it is replayed. A synchronous duplicate video recording apparatus (14) includes a duplicate video recording device (26) and is connected to the master video recording apparatus. The duplicate video recording device provides a duplicate video recording including the time-code. The time-code is visible in frames of the duplicate recording when it is replayed. The synchronous duplicate video recording apparatus includes circuitry (28) which enables the master and duplicate video recording devices to be started and stopped synchronously.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.