As the transport scheme on Super Hi-Vision satellite broadcasting systems, which would be launched in 2020, we have studied MMT (MPEG Media Transport) since it enables hybrid delivery using broadcasting and communications. For realizing the broadcast services using MMT, required signaling information should be defined. In this report, we propose a migration of signaling information based on the service information of the current digital broadcasting systems. Since the migration would not cover all the necessary information, we also propose additional signaling information.
One of the V-High multimedia broadcast service "NOTTV" provides bidirectional services by its receivers having the function of both receiving broadcast wave and using communications network. Compared to traditional broadcasting services, it is characterized by the communication function that plays an important role in providing the main broadcast service. In the process of developing receivers, it is important to verify a series of functions which combines broadcast and communications. To improve the quality of the receivers, mmbi,Inc. provides the test environment to the developers.
"NOTTV" is a new broadcasting media service for mobile devices. Due to improving the quality of the service for the customers, especially in the case of the trouble shooting, we need to update and share the latest information promptly among the member of mmbi, related system engineers, and the call center for customers. In this paper, we report the advantages of a cloud based support system for broadcasting operation.
Connecting TV station and external devices such as tablet through IP multicast packets over the broadcast signal implements prototyped convergence system of broadcasting and telecommunications, which is ready to meet future changes in the services and the improvement of device flexibly. Report of this operational test in TV white space called "Chayamachi TV".
Hybridcast is a service platform designed to enhance broadcasting services using a broadcast-broadband combination. Hybridcast makes it possible to create attractive services with many functions. In March 2013, Hybridcast Technical Specifications were standardized by IPTV Forum Japan based on a new web technology HTML5. This article describes a summary of the specifications and the development of prototype Hybridcast services showed at the NHK STRL Open House 2013.
TBS Television Inc. has developed Hybridcast pilot TV programs and commercial films which synchronized with the content displayed on a second screen device (e.g. tablet, smartphone) based on "Hybridcast" technical specification version 1.0 and demonstrated at Open House 2013 of NHK STRL (Science and Technical Research Laboratory). "Countdown TV CONNECT" is one of those pilot TV programs, which the viewer can sing into smartphone at the same time as the performance of the artist on that music program, and the song which the viewer sung is scored as karaoke system. On this trial, we realized precise synchronization between TV program and second screen device.
File-based production systems are now being introduced in the television broadcast field. The present field pick-up unit (FPU), which is one of wireless links, cannot transmit a file-based video resource as it is, since the FPU is basically a simplex and fixed-rate system. We have started developing new wireless links that enable quick transmission of file-based video resources. In this report, we describe a method to implement the TDD scheme that achieves the maximum transmission efficiency, and evaluate the performance of the prototype baseband transceiver equipped with the method. Furthermore, we produce a prototype TDD-based bi-directional digital FPU system comprised of the baseband transceiver, an RF front-end, and a dual-polarized parabolic antenna with a splash plate, and evaluate the transmission performance in an anechoic chamber. As a result, our proposed system was confirmed to potentially provide the data rate of over 180 Mbps in the long distance of 50 km by combining the TDD scheme with 2x2 MIMO and 256 QAM modulation schemes.
A 21-GHz band satellite broadcasting system is being studied as a means of delivering Ultra High Definition TV, 3DTV, and other advanced forms of broadcasting. In common reception equipment like a condominium and so on, a receiving reflector antenna whose diameter is greater than or equal to 60 cm is generally used. The reflector is made of a metallic mesh and fiber reinforced-plastics (FRP) from the point of view of survival wind and weight saving. Therefore, we fabricated a 21 GHz-band receiving antenna, which has a reflector made of the metallic mesh and FRP, and evaluated its radiation patterns.