ISDB-Tmm has been adopted as single of the standards for nationwide mobile multimedia broadcasting in Japan. Broadcasting using this criterion is scheduled to start after July 24, 2011, when analog TV broadcasting volition be closed down. ISDB-Tmm belongs to the ISDB-T family unit of technologies, and has been developed based on the same technology as ISDB-T. This technology is being actively promoted by the ISDB-T Forum, a grouping made up of approximately 80 Japanese corporations, and thus it is almost certain that the use of ISDB-Tmm technology for broadcast medium volition become a reality.
In addition to ISDB-Tmm, other standards adopted for multimedia broadcasting include ISDB-Tsb and MediaFLO. Broadcasters volition choose single of the standards when they apply for a license. ISDB-Tmm eliminates the need for a guard banding by combination some blocks of 13 segments (5.6 megahertz) and several 1-segment formats (1 section = 0.4 megahertz), and tin be applied to various absolute frequency bands. A transmitter for a combination of 33 segments (14.2 MHz) has already been developed, allowing a significant simplification in transmission costs. As is clearly shown above, the versatility of ISDB-Tmm enables it to be applied to a wide cooking stove of operating frequency bands, as well as documentation spectrum allocations for 7 megahertz and 8 MHz bands.
In summation, ISDB-Tmm is highly compatible with the digital terrestrial television system standard, allowing the sharing of receivers and the reduction of transmittal costs. For these reasons, ISDB-Tmm is considered to be the apotheosis multimedia broadcasting organization for countries, including those in South U.S., that have already adopted ISDB-T as the criterion for their digital terrestrial television system.