Recently, video production using the Hi-Vision system has been showing very rapid growth. The all-digital video switcher is an extremly impotant element of high-end program production facilities in conventional TV systems. Therefore, it is natural that these technologies will continue to be used as we move into the next era of Hi-Vision systems. This paper describes the new Hi-Vision digital video switcer.
A Daily eight-hours HDTV broadcasting servce is available in Japan using BS-3b. Rcently, HDTV programs are used not only for a daily broadcasting but also for various non-broadcasting uses, such as film prduction. Today' s video production industry makes extensive use of special effects. Therefore, it is natural that these technologies will continue to be used as we move into the next era of HDTV systems. Toshiba has developed the world's first HDTV 3-demensional digital picture effect HPE-1000. This paper describes this equipment.
In recent years, VTRs have come to be introduced into our studios. With the replacement of D2-VTRs with cassette-types, operation has become much simpler. On the other hand, the danger of inadvertently erasing previously-recorded material has also increased. In order to avoid this, we have developed and employed a new CTS-Pre-Read HEAD which is set in front of the D2-VTR's erase head. Naturally we have been careful to ensure complete compatibility with standard D2-VTRs. With this new development, there is now no chance whatsoever of erasing a previously - recorded portion of the tape. Next we introduce multi-function remote controller for studio use which transmits to D2-VTS by RS422A. In addition to normal operations, it has the added function of being able to remember the starting points (3places) or ending points when recording, and then search them out later. Through the introduction of these systems, we have been able to eliminate erroneous erasing of video tape, and have seen a dramatic improvement in the working efficiency in our studios.
On July 11th, 1991, from the summit of Mt. Mauna Kea, NHK, using three HDTV cameras, successfully filmed one of the longest total solar eclipses of this century. This was the first attempt in the world to film a total solar eclipse using HDTV cameras. This of course involved difficulties in preparing the equipment and materials and in filming the object.
NHK developped Realtime Graphic display System of YACHT RACE. This system indicated Yachts position on real time by recieving GPS position data. We used 3D graphic system to make On Air picture. It was very effective for our TV program.