A new video hard disk system for multimedia program production

This paper reports on a new video hard disk system for real-time recording and playing back of high-quality digital video signals, an important component in the production of multimedia programs at broadcasting stations. The paper clarifies some of the problems associated with the recording of high-quality video signals on a conventional hard disk system designed for storing computer data. It describes the requirements of a future video hard disk system. We have developed an experimental high-speed hard disk interface device suitable for transferring video signals. This device can guarantee continuous transfer of video signals with a high bit rate, sending them at 123 Mbps/ch-more than twice as fast as a conventional device. Using this interface, we have developed a video hard disk system capable of real-time recording and playing back of non-compressed video signals (conventional TV).