Dynamically paged non-volatile random access video store
US5719988A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1996 |
| Grant date | Feb 17, 1998 |
| Priority date | — |
| Expiry date | Feb 21, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A dynamically paged non-volatile random access video store has a random access memory integrated with a disk drive. The random access memory provides realtime access for recording and playing back video from and to a video source. The disk drive provides a non-volatile backup for the random access memory by transferring data between the disk drive and random access memory automatically, or by command, on a non-realtime basis. The video data accesses and transfers are handled by a microprocessor that interfaces with a controller by which an operator inputs instructions. Multiple channels are accommodated via a channel interface, also controlled by the microprocessor, between external video devices and the random access memory. The disk drive stores a plurality of pages of video data, each page corresponding to the capacity of the random access memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.