In medium wave broadcasting stations, architectures close to transmitting stations affect antenna pattern and load impedance. In this paper, we show that this change of antenna patterns can be analyzed exactly (errors: less than 0.1dB) by resembling shape of architectures to cylinders with same height and introducing radiation efficiency coefficients representing imperfect ground conditions.
For 21-GHz band satellite broadcasting system, we are studying a 300-MHz class wide band transponder. It is approximately 8 times as wide as that applied in 12-GHz band broadcasting satellite. Therefore, it is required higher power for both feeder- and down-link transmitter comparing with the conventional one for 12-GHz band broadcasting satellite. In order to avoid an extremely huge output power transmitter or an enormously giant reflector antenna for the earth station, we studied a high-gain feeder-link receiving antenna assuming the aperture diameter of 1.8m and the design frequency of 18 GHz.
TBS Television broadcasted "22th All Japan High School Women's Football Championship" on 15th and 16th January. This program is also made for "Hybridcast2014" and provided new watching style of sports program with a Hybridcast technology.
In the production framework of the hybridcast application, the know-how of Web applications and the UX design that takes into account the TV viewing style, such as data broadcasting content production are important.
It is impossible to remove the risk of the photosensitive epilepsy perfectly on Television because a TV is the media making a light flicker. However, we can avoid the risk to a considerable extent by considering some points.